Search error codes
Search for your device and error code for an explanation. If your device or code is not listed, you can still create a support ticket.
The device
Betekenis storingscode AL001:
Too many memory write cycles
Storage-type variables are being written too frequently. This usually happens when parameters are changed too often in a short period of time.
Mogelijke oorzaak
Parameters have been changed too many times in a row
Settings are being modified continuously
The controller is receiving too many write actions in a short time
There have been too many attempts to save settings
The control system is overloaded by repeated parameter changes
Zelf controleren
- Check whether many parameters were adjusted recently
- Check whether several settings were changed one after another
- Stop changing parameters
- Leave the controller untouched for a few minutes
- Check whether the alarm disappears once no more changes are made
Advies
Stop operating the controller for 3 minutes or switch off the power for 3 minutes. If the alarm still returns afterwards without changing any settings, have the controller and control system checked further.
Betekenis storingscode AL002:
Retain memory write error
Repeated write errors occur in the memory of stored variables. This usually happens when parameters are changed too often in a short period of time.
Mogelijke oorzaak
Parameters are changed too frequently
Settings are modified continuously
The controller receives too many write actions in a short time
Repeated write errors occur in the memory
The control system is overloaded by too many parameter changes
Zelf controleren
- Check whether many parameters were adjusted recently
- Check whether several settings were changed one after another
- Stop changing parameters
- Leave the controller untouched for a few minutes
- Check whether the alarm disappears once no more changes are made
Advies
Stop operating the controller for 3 minutes or switch off the power for 3 minutes. If the alarm still returns afterwards without changing any settings, have the controller and control system checked further.
Betekenis storingscode AL003:
Inlet probe error
There is a fault in the floor heating probe or inlet probe. The sensor is not providing a correct reading or does not have a proper connection to the control system.
Mogelijke oorzaak
Loose wire
Broken wire
Faulty probe
Poor contact in the connection
Damaged wiring
Zelf controleren
- Carry out a visual inspection of the wiring and probe
- Check whether the wire is properly tightened
- Check whether there is a visible wire break
- Check whether the probe or connector is damaged
- Restart the controller and see whether the error code returns
Advies
Tighten the wire, reconnect the wire, or replace the probe if necessary. If the alarm remains active, also have the wiring and connection checked further.
Betekenis storingscode AL004:
Outlet probe error
There is a fault in the outlet probe. The sensor is not providing a correct reading or does not have a proper connection to the control system.
Mogelijke oorzaak
Loose wire
Broken wire
Faulty probe
Poor contact in the connection
Damaged wiring
Zelf controleren
- Carry out a visual inspection of the wiring and probe
- Check whether the wire is properly tightened
- Check whether there is a visible wire break
- Check whether the probe or connector is damaged
- Restart the controller and see whether the error code returns
Advies
Tighten the wire, reconnect the wire, or replace the probe if necessary. If the alarm remains active, also have the wiring and connection checked further.
Betekenis storingscode AL005:
Ambient probe error
There is a fault in the ambient temperature probe. The sensor is not providing a correct reading or does not have a proper connection to the control system.
Mogelijke oorzaak
Loose wire
Broken wire
Faulty probe
Poor contact in the connection
Damaged wiring
Zelf controleren
- Carry out a visual inspection of the wiring and probe
- Check whether the wire is properly tightened
- Check whether there is a visible wire break
- Check whether the probe or connector is damaged
- Restart the controller and see whether the error code returns
Advies
Tighten the wire, reconnect the wire, or replace the probe if necessary. If the alarm remains active, also have the wiring and connection checked further.
Betekenis storingscode AL006:
Condenser coil temperature probe fault
There is a fault in the condenser coil temperature probe or coil pipe probe. The sensor is not providing a correct reading or does not have a proper connection to the control system.
Mogelijke oorzaak
Loose wire
Broken wire
Faulty probe
Poor contact in the connection
Damaged wiring
Zelf controleren
- Carry out a visual inspection of the wiring and probe
- Check whether the wire is properly tightened
- Check whether there is a visible wire break
- Check whether the probe or connector is damaged
- Restart the controller and see whether the error code returns
Advies
Tighten the wire, reconnect the wire, or replace the probe if necessary. If the alarm remains active, also have the wiring and connection checked further.
Betekenis storingscode AL007:
Water flow switch alarm
There is a fault with the water flow switch or the water flow is too low. As a result, the heat pump cannot operate safely or correctly.
Mogelijke oorzaak
The filter is blocked, resulting in low water flow
The water pump is too small, resulting in insufficient water flow
The water pump is not properly filled or vented
A valve in the water system is closed or not fully open
There is air in the pipework, causing poor water flow
The water flow switch is faulty
In general, the water flow in the system is too low
Zelf controleren
- Check whether the filter is dirty or blocked
- Check whether all shut-off valves and water valves are fully open
- Check whether the water pump is running and operating correctly
- Check whether the pump is properly filled and vented
- Check whether there is air in the system and vent it if necessary
- Check whether the water flow is sufficient
- Check whether the temperature difference remains reasonable and does not become too high
- Restart the heat pump and see whether the alarm returns
Advies
First clean the filter, fully open all valves, and vent the system. Then check whether the water pump has sufficient capacity and is operating correctly. If all of the above causes have been ruled out, have the water flow switch checked and replaced if necessary. If the alarm remains active, have the complete water system and water flow checked by an installer.
Betekenis storingscode AL008:
Phase sequence protection alarm
There is a fault in the phase sequence protection. This is usually related to an abnormal parameter setting or a fault reported by a three-phase device.
Mogelijke oorzaak
Abnormal or incorrect parameter setting
A three-phase device reports a fault
The phase sequence is not set correctly
The protection input is configured incorrectly
There is a fault in the connection or control of the three-phase protection
Zelf controleren
- Check whether this is a three-phase unit
- Check whether parameters have recently been changed
- Check whether any other faults are reported by the three-phase part of the installation
- Check whether the phase sequence is correct
- Check whether the related controller setting is configured correctly
- Check the DI5 setting on the Ot6 page in M09
Advies
Set DI5 of the Ot6 page in M09 to normally open (NO). If the alarm remains active afterwards, have the phase sequence, parameter settings, and three-phase connection checked further.
Betekenis storingscode AL013:
Low superheat valve A
Electronic expansion valve A is operating with superheat that is too low. This is often related to heavy frost on the unit or long-term operation at a low frequency.
Mogelijke oorzaak
The unit has heavy frost
The evaporator or coil is heavily frozen
The unit has been operating at low frequency for a long time
The temperature difference settings are not optimal
The expansion valve control is operating outside the allowed range
The operating conditions of the unit are not ideal
Zelf controleren
- Visually check whether there is heavy frost on the unit or coil
- Check whether the unit is defrosting properly
- Check how long the unit has been running at low frequency
- Check whether the operating conditions are within the allowed operating range
- Check whether the evaporator or coil is free from excessive frost build-up
- Restart the unit and see whether the alarm returns
Advies
Lower the coil temperature difference on the Df05 page in M10. Also check whether the unit is operating for a long time outside the allowable operating range. If the alarm remains active, have the expansion valve control, defrost function, and operating frequency checked further.
Betekenis storingscode AL028:
EVD battery discharge
There is a fault in the battery of the electronic expansion valve control (EEV / EVD). This may be caused by strong electrical interference inside the unit.
Mogelijke oorzaak
The battery of the EVD / EEV control is faulty
There is strong electrical interference inside the unit
There is a fault in the electronic expansion valve control
The power supply has been unstable
There is an internal electronic problem in the control system
Zelf controleren
- Check whether there have recently been electrical disturbances or power supply issues
- Check whether the unit is installed in an environment with strong electrical interference
- Check whether any other fault codes are visible
- Restart the unit and see whether the alarm returns
- Check whether the power supply to the unit is stable
Advies
Switch off the power to the unit for 3 minutes and then restart it. If the alarm remains active, have the EVD / EEV control, the battery, and the electrical control system checked further.
Betekenis storingscode AL037:
BLDC alarm: out of envelope
The BLDC fan or BLDC control is operating outside the allowed operating range of the unit. This usually happens when the water temperature is too high or the ambient temperature is too low.
Mogelijke oorzaak
The water temperature is too high
The ambient temperature is too low
The unit is operating outside the allowed temperature range
The operating conditions are outside the unit specifications
The control system or fan is being loaded outside its normal operating range
Zelf controleren
- Check whether the ambient temperature is too low for the unit to operate
- Check whether the water temperature has become too high
- Check on the display whether the measured temperatures are realistic
- Check whether the unit is operating within the allowed working range at that time
- Restart the unit and see whether the alarm returns
- Check whether any other fault codes are present related to temperature or fan control
Advies
Operate the unit within the allowable operating range. If the alarm remains active while the temperatures are normal, have the temperature readings, BLDC control, and operating settings checked further.
Betekenis storingscode AL038:
BLDC alarm: starting fail wait
The BLDC compressor does not start correctly. According to the alarm, this is related to a program error or an incorrect software version.
Mogelijke oorzaak
Program error in the control system
Outdated software version
The BLDC compressor is not receiving the correct start command
There is an error in the unit control software
The controller is not running the correct firmware or program version
Zelf controleren
- Check which software or program version is currently installed in the unit
- Check whether any changes or updates were recently made
- Check whether the alarm appears immediately during startup
- Restart the unit and see whether the alarm returns
- Check whether any other fault codes are visible related to compressor control or software
Advies
Check whether the installed program version is the latest one. If necessary, update the unit with the latest software or program. If the alarm remains active afterwards, have the control system and BLDC compressor control checked further.
Betekenis storingscode AL039:
BLDC alarm: starting fail exceeded
The BLDC compressor does not start correctly and the maximum allowed starting attempt or waiting time has been exceeded. According to the alarm, this is related to a program error or an incorrect software version.
Mogelijke oorzaak
Program error in the control system
Outdated software version
The BLDC compressor is not receiving the correct start command
There is an error in the unit control software
The controller is not running the correct firmware or program version
The compressor has had multiple failed start attempts
Zelf controleren
- Check which software or program version is currently installed in the unit
- Check whether any changes or updates were recently made
- Check whether the alarm appears immediately during startup
- Restart the unit and see whether the alarm returns
- Check whether any other fault codes are visible related to compressor control or software
- Observe whether the compressor tries to start but stops again immediately
Advies
Check whether the installed program version is the latest one. If necessary, update the unit with the latest software or program. If the alarm remains active afterwards, have the control system and BLDC compressor control checked further.
Betekenis storingscode AL041/AL050:
BLDC alarm: discharge gas temperature too high
The discharge gas temperature has become too high. The heat pump therefore goes into protection mode to prevent damage to the compressor or other components.
Mogelijke oorzaak
Lack of refrigerant
Low pressure is extremely low
There is a leak in the refrigerant circuit
The discharge gas temperature sensor is inaccurate
The discharge gas temperature probe still shows a very high or very low value after shutdown
The control system is receiving incorrect temperature information from the sensor
Zelf controleren
- Check whether any other fault codes are visible related to low pressure or refrigerant
- Check whether the unit is running abnormally or quickly going into fault mode
- Check whether the discharge gas temperature shown on the display is unrealistic
- Switch the unit off and check whether the sensor value still remains extremely high or low afterwards
- Visually check for possible signs of leakage or oil traces, where visible
- Restart the unit and see whether the alarm returns
Advies
Check the system for leaks and repair them if necessary. After that, the system must be vacuumed and recharged with refrigerant according to the nameplate. If the discharge gas temperature probe still shows an unrealistic high or low value after shutdown, the sensor must be replaced. This should be done by an installer or refrigeration technician.
Betekenis storingscode AL051/AL057/AL082:
Power+ alarm 01: compressor 1/2 overcurrent
Compressor 1 or 2 has gone into overcurrent protection. The heat pump therefore switches into protection mode to prevent damage to the compressor or electrical components.
Mogelijke oorzaak
The power supply voltage is too low
The mains voltage drops more than 10% below the rated voltage
The wire diameter is too small
The wiring is loose, causing voltage drop
The AC contactor of the compressor is faulty or does not close properly
There is a short circuit in the compressor winding
The compressor is internally faulty
The power supply is unstable
Zelf controleren
- Use a multimeter to check the voltage during standby and during operation
- Check whether the voltage drops more than 10% below the rated value
- Check whether the power cable has sufficient wire size
- Check whether the wiring is firmly connected and not loose or burned
- Visually check whether the AC contactor closes properly
- Check whether the fault occurs at the moment the compressor starts
- Check whether there are any other fault codes related to power supply or compressor operation
Advies
Make sure the unit has a stable power supply. If necessary, install a voltage stabilizer or provide a more stable supply voltage. If the wiring is too thin or loose, replace it with the correct wire size and tighten all connections properly. If the AC contactor is faulty, replace it. If all of the above causes have been ruled out, measure the resistance between the three compressor windings. If the resistance is too low or too high, the compressor is faulty and must be replaced.
Betekenis storingscode AL053:
Power+ alarm 03: DC-bus overvoltage
The voltage on the DC bus has become too high. The actual voltage exceeds 20% of the rated voltage, causing the heat pump to go into protection mode.
Mogelijke oorzaak
The power supply voltage is too high
The actual voltage exceeds 20% of the rated voltage
The mains voltage is unstable
There is a problem with the power supply
A voltage spike or overvoltage has occurred
Zelf controleren
- Measure the supply voltage with a multimeter
- Check whether the measured voltage is higher than allowed
- Check whether there are voltage fluctuations or spikes in the power supply
- Check whether other electrical devices on the same circuit also show abnormalities
- Restart the unit and see whether the alarm returns
Advies
Provide a stable power supply voltage. If the alarm remains active, have the power supply, mains voltage, and electrical connection of the unit checked further.
Betekenis storingscode AL054:
Power+ alarm 04: DC-bus undervoltage
The voltage on the DC bus has become too low. The actual voltage is more than 25% below the rated voltage, causing the heat pump to go into protection mode.
Mogelijke oorzaak
The power supply voltage is too low
The actual voltage is more than 25% below the rated voltage
The mains voltage is unstable
There is a problem with the power supply
There is voltage drop due to undersized wiring or loose connections
The load on the power circuit is too high
Zelf controleren
- Measure the supply voltage with a multimeter
- Check whether the measured voltage is lower than allowed
- Check whether there are voltage fluctuations or voltage drop in the power supply
- Check whether the wiring is firmly connected and not undersized
- Check whether other electrical devices on the same circuit also show abnormalities
- Restart the unit and see whether the alarm returns
Advies
Provide a stable power supply voltage. If the alarm remains active, have the power supply, mains voltage, wiring, and electrical connection of the unit checked further.
Betekenis storingscode AL114:
Power+ alarm: Power+ offline
There is a fault in the communication or connection with the inverter. The inverter is detected by the controller as offline.
Mogelijke oorzaak
The time between switching the unit off and on again was too short
The power cycle was shorter than 30 seconds
The inverter cable is loose
A screw terminal is not tightened properly
The inverter DIP switch position is incorrect
The four DIP switches are not set in the same or correct direction
There is a connection or communication problem between the controller and the inverter
Zelf controleren
- Check whether the unit was switched on again too quickly after being powered off
- Check whether the inverter cable is firmly connected
- Check whether all screw terminals are tightened properly
- Check the position of the four DIP switches on the inverter
- Check whether the DIP switches are set correctly and consistently
- Restart the unit and see whether the alarm returns
Advies
Switch the unit off again and wait 3 minutes before switching it on. If that does not work, switch the unit off for 10 minutes. Then recheck the inverter cable, screw terminals, and DIP switch positions. If the alarm remains active, have the inverter connection and communication checked further.
Betekenis storingscode AL115:
EEV alarm: low superheat
The electronic expansion valve is operating with superheat that is too low. This is often related to heavy frost on the unit or long-term operation at a low frequency.
Mogelijke oorzaak
The unit has heavy frost
The evaporator or coil is heavily frozen
The unit has been operating at low frequency for a long time
The temperature difference settings are not optimal
The expansion valve control is operating outside the allowed range
The operating conditions of the unit are not ideal
Zelf controleren
- Visually check whether there is heavy frost on the unit or coil
- Check whether the unit is defrosting properly
- Check how long the unit has been running at low frequency
- Check whether the operating conditions are within the allowed operating range
- Check whether the evaporator or coil is free from excessive frost build-up
- Restart the unit and see whether the alarm returns
Advies
Lower the coil temperature difference on the Df05 page in M10. Also check whether the unit is operating for a long time outside the allowable operating range. If the alarm remains active, have the expansion valve control, defrost function, and operating frequency checked further.
Betekenis storingscode AL128:
Low pressure alarm
The pressure on the low side of the system has become too low. The heat pump therefore goes into protection mode to prevent damage to the refrigeration circuit or compressor.
Mogelijke oorzaak
Heavy frost on the evaporator
The evaporator is covered with a thick layer of frost or ice
The fan motor or fan blades are faulty
The fan rotates too slowly or stops completely
Insufficient airflow due to poor fan operation
Refrigerant leakage in the system
Oil traces are visible on pipes or components
The low pressure switch is faulty
The high and low pressure switches are wired incorrectly
Zelf controleren
- Check whether the evaporator is covered with heavy frost or ice
- Check whether the unit is defrosting properly
- Check whether the fan is running normally and not too slowly or stopped
- Visually inspect whether the fan blades are damaged
- Check for oil traces or visible signs of leakage on the pipes
- Check whether the low pressure is actually too low, if measuring equipment is available
- Check whether the alarm returns after restarting
- Check whether the wiring of the high and low pressure switches is connected correctly
Advies
First perform a forced defrost if the evaporator is heavily frozen. Also make sure the ambient temperature probe is positioned as far away from the evaporator as possible, so it is not affected by snow or ice. If the fan is faulty, replace the fan motor or fan blades. If the fan runs too slowly, replace the fan capacitor if applicable. If a refrigerant leak is suspected, the system must be checked for leaks, repaired, vacuumed, and recharged with refrigerant according to the nameplate. If the low pressure switch is faulty, it must be replaced. If the high and low pressure switches are wired incorrectly, correct the wiring and check the system again.
Betekenis storingscode AL129:
High pressure alarm
The pressure in the system has become too high. The heat pump therefore goes into protection mode to prevent damage to the refrigerant circuit, compressor, or other components.
Mogelijke oorzaak
The filter is blocked, resulting in low water flow
The water pump has insufficient head or flow capacity
The water pump is not properly filled or vented
There is air in the pipework, causing poor water flow
There is air in the refrigerant circuit
The electronic expansion valve is faulty
The water-side heat exchanger is fouled
The high pressure switch is faulty
The hot water probe or floor heating probe is not placed in the correct return pipe or blind pipe of the tank
The outlet water temperature rises too high, above 60 °C
Zelf controleren
- Check whether the temperature difference between inlet and outlet water is more than 8 degrees
- Check whether the filter is dirty or blocked
- Check whether the water pump is running properly and delivering enough water
- Check whether the pump is properly filled and vented
- Check whether there is air in the water system and vent it if necessary
- Check whether the high-pressure gauge pointer is unstable or vibrating
- Check whether the low pressure is low and the high pressure is high, if measuring equipment is available
- Check whether the temperature difference remains small while the high pressure rises
- Check whether the outlet water temperature exceeds 60 °C
- Check whether the hot water or floor heating probe is installed in the correct position
Advies
First clean the filter and check the water flow. If the pump is too small, replace it with a model that has sufficient head and water flow capacity. Vent the system properly and make sure the pump is filled correctly. If there is air in the refrigerant circuit, the system must be vacuumed again and recharged with refrigerant. If the electronic expansion valve is faulty, replace it. If the water-side heat exchanger is fouled, clean it and treat the system water if necessary. If the high pressure switch is faulty, replace it. Finally, check whether the hot water or floor heating probe is installed in the correct position.
Betekenis storingscode AL130:
Discharge gas temperature probe error
There is a fault in the discharge gas temperature probe. The sensor is not providing a correct reading or does not have a proper connection to the control system.
Mogelijke oorzaak
Loose wire
Broken wire
Faulty probe
Poor contact in the connection
Damaged wiring
Zelf controleren
- Carry out a visual inspection of the wiring and probe
- Check whether the wire is properly tightened
- Check whether there is a visible wire break
- Check whether the probe or connector is damaged
- Restart the controller and see whether the error code returns
Advies
Tighten the wire, reconnect the wire, or replace the probe if necessary. If the alarm remains active, also have the wiring and connection checked further.
Betekenis storingscode AL131:
Suction gas temperature probe error
There is a fault in the suction gas temperature probe. The sensor is not providing a correct reading or does not have a proper connection to the control system.
Mogelijke oorzaak
Loose wire
Broken wire
Faulty probe
Poor contact in the connection
Damaged wiring
Zelf controleren
- Carry out a visual inspection of the wiring and probe
- Check whether the wire is properly tightened
- Check whether there is a visible wire break
- Check whether the probe or connector is damaged
- Restart the controller and see whether the error code returns
Advies
Tighten the wire, reconnect the wire, or replace the probe if necessary. If the alarm remains active, also have the wiring and connection checked further.
Betekenis storingscode AL134:
Water tank probe error
There is a fault in the water tank probe. The sensor is not providing a correct reading or does not have a proper connection to the control system.
Mogelijke oorzaak
Loose wire
Broken wire
Faulty probe
Poor contact in the connection
Damaged wiring
Zelf controleren
- Carry out a visual inspection of the wiring and probe
- Check whether the wire is properly tightened
- Check whether there is a visible wire break
- Check whether the probe or connector is damaged
- Restart the controller and see whether the error code returns
Advies
Tighten the wire, reconnect the wire, or replace the probe if necessary. If the alarm remains active, also have the wiring and connection checked further.
Betekenis storingscode AL138:
High temperature alarm
The outlet water temperature has become too high. The heat pump therefore goes into protection mode to prevent damage caused by excessive water temperature or insufficient water flow.
Mogelijke oorzaak
The filter is blocked, resulting in low water flow
The water pump is too small, resulting in insufficient water flow
The water pump is not properly filled or vented
There is air in the pipework, causing poor water flow
The set temperature is too high
The water flow is too low
The outlet water temperature rises above 62 °C
Zelf controleren
- Check whether the outlet water temperature is higher than 62 °C
- Check whether the filter is dirty or blocked
- Check whether the water pump is running properly and delivering enough water
- Check whether the pump is properly filled and vented
- Check whether there is air in the system and vent it if necessary
- Check whether all shut-off valves are fully open
- Check whether the set temperature is unnecessarily high
- Restart the unit and see whether the alarm returns
Advies
First clean the filter and check the water flow. If the pump is too small, replace it with a model that has sufficient head and water flow capacity. Vent the system properly and make sure the pump is filled correctly. If there is air in the system, an automatic air vent at the highest point of the pipework may be required. If the set temperature is too high, reduce it. If the alarm remains active, have the water system, pump, and control settings checked further.
Betekenis storingscode AL139:
Low temperature alarm
The outlet water temperature has become too low. The heat pump therefore goes into protection mode to prevent damage caused by excessively low water temperature or insufficient water flow.
Mogelijke oorzaak
The filter is blocked, resulting in low water flow
The water pump is too small, resulting in insufficient water flow
The water pump is not properly filled or vented
There is air in the pipework, causing poor water flow
The outlet water temperature drops below 5 °C
The water flow is too low
Zelf controleren
- Check whether the outlet water temperature is lower than 5 °C
- Check whether the filter is dirty or blocked
- Check whether the water pump is running properly and delivering enough water
- Check whether the pump is properly filled and vented
- Check whether there is air in the system and vent it if necessary
- Check whether all shut-off valves are fully open
- Restart the unit and see whether the alarm returns
Advies
First clean the filter and check the water flow. If the pump is too small, replace it with a model that has sufficient head and water flow capacity. Vent the system properly and make sure the pump is filled correctly. If there is air in the system, an automatic air vent at the highest point of the pipework may be required. If the alarm remains active, have the water system, pump, and control settings checked further.
Betekenis storingscode AL153:
Fan 1 fault
Speed control fan 1 is not operating correctly. According to the alarm, this fault is related to an abnormal fan driver dial switch setting.
Mogelijke oorzaak
The fan driver DIP switch is set incorrectly
The fan driver is not configured correctly
The DIP switch position does not match the required setting
There is a fault in the control of fan 1
The fan driver or fan control is not operating properly
Zelf controleren
- Carry out a visual inspection of the fan 1 driver
- Check the position of the DIP switch
- Check whether the switch position matches the required setting
- Check whether there is any visible damage to the driver or wiring
- Restart the unit and see whether the alarm returns
- Carry out a visual inspection of the fan 1 driver
- Check the position of the DIP switch
- Check whether the switch position matches the required setting
- Check whether there is any visible damage to the driver or wiring
- Restart the unit and see whether the alarm returns
Advies
Check whether the fan DIP switch position is set correctly according to: top-left, bottom-left, top-right, bottom-right. Correct the switch position if necessary. If the alarm remains active, have the fan driver, fan control, and wiring checked further.
Betekenis storingscode AL155:
Fans offline
Communication with the speed control fan is offline or the fan is no longer responding correctly.
Mogelijke oorzaak
Communication with the fan is interrupted
The fan motor is faulty
The fan is mechanically stuck
The fan control is not responding properly
The wiring or connection of the fan is damaged or disconnected
Zelf controleren
- Check whether the fan can rotate freely
- Rotate the fan manually and check whether it is stuck
- Check whether the fan responds normally during startup
- Check whether the wiring and connectors are firmly connected
- Check whether there is visible damage to the fan or motor
- Restart the unit and see whether the alarm returns
Advies
If the fan remains stuck when rotated manually, the fan motor must be replaced. If the alarm remains active, also have the fan control, wiring, and communication checked further.
Betekenis storingscode AL54:
Fan 2 fault
Speed control fan 2 is not operating correctly. According to the alarm, the fan driver is faulty.
Mogelijke oorzaak
The fan driver is faulty
The power indicator on the driver is not on
The fan driver is not receiving power
There is a fault in the control of fan 2
The wiring to the fan driver is damaged or disconnected
Zelf controleren
- Visually check whether the power light on the fan driver is on
- Check whether the fan driver is receiving power
- Check whether the wiring is firmly connected
- Check whether there is visible damage to the driver or connectors
- Restart the unit and see whether the alarm returns
Advies
If the power light does not come on and the alarm remains active, the fan driver must be replaced. Also have the power supply and wiring to the driver checked.
Betekenis storingscode ER01:
Safety thermostat HV1 intervention
The safety thermostat HV1 signal remains active, even when the pellet stove is switched off.
Mogelijke oorzaak
The safety thermostat was triggered by overheating
The thermostat is faulty
The wiring or connector has poor contact
There is a short circuit or wiring fault
The safety protection remained active after a previous overheating event
There is a fault on the control board or in the control system
Zelf controleren
- Check whether the pellet stove has fully cooled down
- Check whether the safety thermostat can be reset manually
- Check the wiring and connectors of the thermostat
- Check for damage, discoloration, or loose contact
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active while the pellet stove is off and cooled down, have the safety thermostat, wiring, and control board checked. Replace the thermostat if necessary.
Betekenis storingscode ER01:
Incorrect phase protection
RST sequence error of the incoming 380V heat pump power supply line.
Mogelijke oorzaak
The RST sequence of the incoming 380V heat pump power supply is incorrect. The three RST wires must be connected to the correct wiring position. First switch off the power, then correct the wiring, and switch the unit back on. The fault should then disappear.
Zelf controleren
Check whether the unit is connected to a 3-phase power supply and whether this fault appears immediately when the heat pump starts. That often indicates an incorrect phase sequence. If you have the proper measuring equipment, you can use a phase rotation tester to verify the phase order. Also check whether anything was recently changed in the electrical panel or supply wiring.
Advies
Contact a qualified electrician or installer to measure the phase sequence and swap two phases if necessary. Do not work on a 380V supply yourself unless you are qualified.
Betekenis storingscode ER01:
Safety thermostat HV1 blocked
The safety thermostat HV1 has been triggered and remains blocked. As a result, the pellet stove goes into fault mode to prevent overheating or damage.
Mogelijke oorzaak
The pellet stove has overheated
The safety thermostat was triggered by overheating
Circulation or heat dissipation is insufficient
The thermostat is faulty
The wiring or connection of the thermostat has poor contact
The protection has not been reset after a previous fault
There is a problem in the control system or on the PCB
Zelf controleren
- Check whether the pellet stove has fully cooled down
- Check whether the safety thermostat can be reset manually
- Check the wiring and connectors of the thermostat
- Check for loose contact, damage, or discoloration of cables and connections
- Check whether there is a visible cause of overheating
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active, have the safety thermostat, the wiring, and the control board checked. If necessary, the thermostat must be replaced and the cause of the overheating must be resolved.
Betekenis storingscode ER02:
Boiler door open blocked
The pellet stove detects that the boiler door is open or that the door signal remains blocked. As a result, the stove goes into fault or protection mode.
Mogelijke oorzaak
The boiler door is not closed properly
The door switch or door contact is faulty
The plug or wiring of the door contact has poor contact
The door does not close properly mechanically
The seal, latch, or locking mechanism is dirty or worn
The door signal remains active due to a fault in the control board or control system
Zelf controleren
- Check whether the boiler door is fully closed
- Check whether the door locks properly
- Check whether the seal and latch are clean and undamaged
- Check the door contact or door switch for damage
- Check the wiring and plugs of the door contact
- Restart the pellet stove and see whether the error returns
Advies
First close the boiler door properly and check whether the door contact works correctly. If the alarm remains active, have the door contact, wiring, latch, and control board checked. Replace faulty parts if necessary.
Betekenis storingscode ER02:
Safety pressure switch HV2 intervention
The safety pressure switch HV2 is giving a signal while the combustion fan is running.
Mogelijke oorzaak
The safety pressure switch HV2 has been triggered
The flue gas outlet is partially blocked
Air supply is insufficient
The pressure hose to the pressure switch is loose, damaged, or blocked
The combustion fan is not operating properly
The pressure switch is faulty
There is dirt or blockage inside the stove or flue
The wiring or connection of the pressure switch has poor contact
Zelf controleren
- Check whether the flue is blocked
- Check whether the air inlet is free
- Check whether the combustion fan is running
- Check the pressure hose for looseness, cracks, or blockage
- Check the plugs and wiring of the pressure switch
- Check whether the stove is dirty internally and needs cleaning
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active, have the safety pressure switch, combustion fan, pressure hose, and flue checked. If necessary, dirty parts should be cleaned or the pressure switch should be replaced.
Betekenis storingscode ER03:
Blockage in the water flow
There isn't enough water flow.
Mogelijke oorzaak
- Blockage
- The pipes used are unsuitable
- The supply (AV) and return (RT) pipes are reversed/connected incorrectly
- Leaks present
- There is no buffer tank
- Clogged filter or magnetic dirt separator
- There is air in the pipework
Zelf controleren
- Check the water circuit for any blockages; open all ball valves etc.
- Check your water circuit
- Consider installing a buffer tank
- Check your filter and magnetic dirt separator and clean them
- Bleed the water circuit
- Check for any leaks and repair them
- Manually increase the circulation pump speed (heat pump settings) F06 and F08 under operating settings to 100%
- Circulation pump not working
Advies
Ask an engineer to check the hydraulic system.
Betekenis storingscode ER03:
Shutdown due to lack of fire blocked
The pellet stove has shut down because no flame was detected anymore, and this condition remains blocked in the control system.
Mogelijke oorzaak
The flame went out during operation
No pellets or too few pellets are being fed
The pellet hopper is empty
The burn pot is dirty or blocked
The pellets burn poorly or are damp
The flue gas temperature dropped too far
The air supply or flue gas outlet is insufficient
The flue gas fan is not working properly
The sensor or controller does not detect proper combustion
Zelf controleren
- Check whether there are still enough pellets in the hopper
- Check whether pellets are reaching the burn pot
- Check whether the burn pot is clean and not blocked
- Check whether the pellets are dry and of good quality
- Check whether the air inlet and flue outlet are free
- Check whether the flue gas fan is running
- Check whether there was still a normal flame during operation
- Restart the pellet stove and see whether the error returns
Advies
First clean the burn pot and check the pellet feed. Then check the pellet quality, air supply, and flue gas outlet. If the alarm remains active, have the flue gas fan, sensors, and combustion control checked. Replace faulty parts if necessary.
Betekenis storingscode ER03:
Shutdown due to decrease in flue gas temperature
The pellet stove has shut down because the flue gas temperature dropped too far. This usually indicates that combustion has stopped or did not continue properly.
Mogelijke oorzaak
Pellet supply is interrupted or insufficient
The pellet hopper is empty
The pellets do not burn properly
Ignition failed or the flame went out
The burn pot is dirty or blocked
The flue gas fan is not operating properly
The flue gas temperature sensor is inaccurate
Air supply or flue gas discharge is insufficient
The stove is dirty internally
Zelf controleren
- Check whether there are still enough pellets in the hopper
- Check whether pellets are reaching the burn pot
- Check whether the burn pot is clean and not blocked
- Check whether the stove is getting enough combustion air
- Check whether the flue is not blocked
- Check whether the flue gas fan is running
- Check whether there was a normal flame before the fault occurred
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active, clean the burn pot, combustion chamber, and if necessary the flue. Also check the pellet supply, flue gas fan, and flue gas temperature sensor. If the fault keeps returning, have the stove checked further for ignition, sensor operation, and combustion performance.
Betekenis storingscode ER04:
Anti-freeze protection
Ambient temperature is too low. This is not an abnormal fault.
Mogelijke oorzaak
This is a normal protection function. The heat pump can recover automatically once conditions return to normal.
Zelf controleren
- Check whether the outdoor temperature is very low.
- Make sure power remains on to the heat pump.
- Check whether water circulation is still present.
- Make sure parts of the system are not freezing.
Advies
If the fault remains active even when the temperature is normal again, have an installer check the sensors, pump, and anti-freeze protection function.
Betekenis storingscode ER04:
Shutdown due to excessive boiler temperature blocked
The pellet stove has shut down because the boiler temperature became too high, and this protection remains blocked in the control system.
Mogelijke oorzaak
The boiler temperature has risen too high
The circulation pump is not working properly or has stopped
There is insufficient water flow in the system
There is air in the system
Valves are closed or not fully open
The system is dirty or partially blocked
The temperature sensor is reading incorrectly
The control system does not reduce output in time
The installation has not been vented properly
Zelf controleren
- Check whether the pellet stove has fully cooled down
- Check whether the circulation pump is running
- Check whether all valves are open
- Check whether there is enough water in the system and whether the pressure is correct
- Check whether there is air in the system and vent the installation if necessary
- Check whether filters or pipes are blocked
- Check whether the temperature on the display rises unrealistically high
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active, have the circulation pump, water flow, temperature sensor, and control system checked. If necessary, the system must be vented, cleaned, or a faulty component replaced.
Betekenis storingscode ER04:
Shutdown due to water overtemperature
The pellet stove has shut down because the water temperature became too high. The protection system intervenes to prevent damage to the stove, pump, or heating system.
Mogelijke oorzaak
The water temperature became too high
The circulation pump is not working properly or has stopped
There is insufficient water flow in the system
There is air in the system
Valves are closed or not fully open
The system is dirty or partially blocked
The temperature sensor is reading incorrectly
The control system does not reduce output in time
The installation has not been vented properly
Zelf controleren
- Check whether the circulation pump is running
- Check whether all valves are open
- Check whether there is enough water in the system and whether the pressure is correct
- Check whether there is air in the system and vent the installation if necessary
- Check whether filters or pipes are blocked
- Check whether the temperature on the display rises unrealistically high
- Let the stove cool down completely and then restart it
- Check whether the error returns
Advies
If the alarm remains active, have the circulation pump, water flow, temperature sensor, and control system checked. If necessary, the system must be vented, cleaned, or a faulty component replaced.
Betekenis storingscode ER05:
High pressure fault
The pressure on the high side of the refrigeration circuit becomes too high. The heat pump shuts down to prevent damage.
Mogelijke oorzaak
The condenser is dirty or blocked
Airflow through the unit is insufficient
The fan is not running properly or not running at all
Water flow is too low
The filter or dirt separator is clogged
The water-side heat exchanger is dirty or scaled
Valves are not fully open
Flow and return are connected incorrectly
There is too much refrigerant in the system
The high-pressure switch is faulty
The HP switch cable has poor contact
The inlet temperature sensor gives an incorrect reading
The actual water temperature is too high
Zelf controleren
- Check whether the fan is running
- Check whether the condenser is clean
- Remove dirt, leaves, and dust from the unit
- Check whether all valves are open
- Check system pressure and water flow
- Check the filter and dirt separator
- Check whether the temperature difference between flow and return becomes too high
- Check whether the sensor cables are properly connected
Advies
Have an installer or refrigeration technician check the unit for contamination, fan operation, water flow, scaling, sensors, and refrigerant charge.
Betekenis storingscode ER05:
Shutdown due to flue gas overtemperature
The pellet stove has shut down because the flue gas temperature became too high. The protection system intervenes to prevent damage to the stove, flue gas fan, or other components.
Mogelijke oorzaak
The flue gas temperature became too high
The flue gas outlet is partially blocked
The flue gas fan is not operating properly
Combustion is too intense
Pellet feed is too high
The heat exchanger or flue gas passages are dirty
The flue gas temperature sensor is reading incorrectly
The control system is not regulating combustion properly
Zelf controleren
- Check whether the flue gas outlet is free
- Check whether the flue gas fan is running normally
- Check whether the stove is dirty internally and needs cleaning
- Check whether the heat exchanger and flue gas passages are clean
- Check whether the flame is abnormally large or unstable
- Let the stove cool down completely and then restart it
- Check whether the error returns
Advies
If the alarm remains active, clean the stove thoroughly, including the flue gas passages and heat exchanger. Also check the flue gas fan and the flue gas temperature sensor. If the fault keeps returning, have the combustion settings, sensor operation, and flue system checked further.
Betekenis storingscode ER05:
Shutdown due to excessive exhaust gas temperature blocked
The pellet stove has shut down because the exhaust or flue gas temperature became too high, and this protection remains blocked in the control system.
Mogelijke oorzaak
The exhaust gas temperature became too high
The flue gas outlet is partially blocked
The flue gas fan is not operating properly
Combustion is too intense
Pellet feed is too high
The heat exchanger or flue gas passages are dirty
The flue gas temperature sensor is reading incorrectly
The control system is not regulating combustion properly
Zelf controleren
- Check whether the pellet stove has fully cooled down
- Check whether the flue gas outlet is free
- Check whether the flue gas fan is running normally
- Check whether the stove is dirty internally and needs cleaning
- Check whether the heat exchanger and flue gas passages are clean
- Check whether the flame is abnormally large or unstable
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active, clean the stove thoroughly, including the flue gas passages and heat exchanger. Also check the flue gas fan and the flue gas temperature sensor. If the fault keeps returning, have the combustion settings, sensor operation, and flue system checked further.
Betekenis storingscode ER06:
Low pressure fault
The pressure on the low side of the refrigeration circuit drops too far. As a result, the heat pump cannot absorb heat properly.
Mogelijke oorzaak
The evaporator is dirty, dusty, or blocked
Airflow across the evaporator is insufficient
The fan is not running properly
There is a refrigerant leak
Refrigerant charge is too low
The defrost function is not working correctly
Water flow is too low
Return water temperature is too low
The filter or dirt separator is clogged
The circulation pump is not working properly
The low-pressure switch is faulty
There is a sensor or control issue
Zelf controleren
- Check whether the evaporator is clean
- Check whether the fan is operating correctly
- Check whether the unit is defrosting properly
- Check whether there is sufficient water flow
- Check the filter, dirt separator, and pump
- Check whether the return temperature is extremely low
Advies
Have a refrigeration technician check for leakage, refrigerant shortage, low-pressure protection issues, and defrost problems. Also have the water-side flow checked.
Betekenis storingscode ER07:
No encoder signal from combustion fan
The pellet stove is not receiving an encoder signal from the combustion fan. This means the control system is not getting correct speed feedback from the fan.
Mogelijke oorzaak
The combustion fan encoder is faulty
The combustion fan is faulty
The encoder wiring is loose or damaged
There is poor contact in the connector
The fan is not running or not running correctly
The control board is not receiving a proper signal
Parameter P25 is set to a mode where an encoder signal is required
Zelf controleren
- Check whether the combustion fan runs during startup
- Check the plugs and wiring of the fan and encoder
- Check for loose contact, damage, or contamination
- Check whether the fan can rotate freely and is not blocked
- Check whether parameter P25 is set to 1 or 2
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active, have the combustion fan, encoder, wiring, and control board checked. If necessary, replace the encoder or the complete fan. Also check whether parameter P25 is set correctly.
Betekenis storingscode ER07:
Encoder fault: no signal blocked
The pellet stove is no longer receiving an encoder signal, and this fault remains blocked in the control system. As a result, the controller is not getting correct feedback about the speed or operation of the related component.
Mogelijke oorzaak
The encoder is faulty
The motor or fan connected to the encoder is faulty
The encoder wiring is loose or damaged
There is poor contact in the connector
The component is not running or not running correctly
The control board is not receiving a proper signal
The fault has remained blocked after a previous error
Zelf controleren
- Check whether the related component is still running during startup or operation
- Check the plugs and wiring of the encoder
- Check for loose contact, damage, or contamination
- Check whether the component is mechanically blocked
- Restart the pellet stove and see whether the error returns
- Check whether the encoder or motor is visibly damaged
Advies
If the alarm remains active, have the encoder, the motor or fan, the wiring, and the control board checked. If necessary, replace the encoder or the complete driven component. If the fault remains blocked, it must also be reset correctly after the cause has been resolved.
Betekenis storingscode ER08:
Encoder fault: fan regulation failed blocked
The pellet stove is receiving an encoder signal, but the fan speed regulation is not working correctly. This fault remains blocked in the control system.
Mogelijke oorzaak
The fan is not running at the requested speed
The encoder is sending incorrect values
The fan is faulty or worn out
The wiring of the fan or encoder has poor contact
There is dirt or mechanical resistance in the fan
The control board is unable to regulate the fan speed correctly
The fault has remained blocked after a previous error
Zelf controleren
- Check whether the fan runs during startup
- Check whether the fan sounds irregular or runs at an abnormal speed
- Check whether the fan can rotate freely and is not dirty or blocked
- Check the plugs and wiring of the fan and encoder
- Check for loose contact, damage, or contamination
- Restart the pellet stove and see whether the error returns
- Check whether the fan or encoder is visibly damaged
Advies
If the alarm remains active, have the fan, encoder, wiring, and control board checked. If necessary, replace the fan or encoder. If the fault remains blocked, it must also be reset correctly after the cause has been resolved.
Betekenis storingscode ER08:
Combustion fan speed regulation failed
The pellet stove is receiving an encoder signal from the combustion fan, but the speed regulation is not working correctly. This means the fan is not running at the requested speed.
Mogelijke oorzaak
The combustion fan is faulty or worn out
The encoder is sending a signal, but the values are incorrect
The fan is running too slowly or irregularly
The wiring of the fan or encoder has poor contact
There is dirt or mechanical resistance in the fan
The control board is unable to regulate the fan speed correctly
Parameter P25 is set to a mode where encoder-based speed regulation must be active
Zelf controleren
- Check whether the combustion fan runs during startup
- Check whether the fan sounds irregular or runs at an abnormal speed
- Check whether the fan can rotate freely and is not dirty or blocked
- Check the plugs and wiring of the fan and encoder
- Check for loose contact, damage, or contamination
- Check whether parameter P25 is set to 1 or 2
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active, have the combustion fan, encoder, wiring, and control board checked. If necessary, replace the fan or encoder. Also check whether parameter P25 is set correctly for this type of fan speed regulation.
Betekenis storingscode ER09:
Low water pressure
The water pressure in the system has become too low. The pellet stove therefore goes into fault or protection mode to prevent damage caused by insufficient water circulation.
Mogelijke oorzaak
The water pressure in the system is too low
There is water loss or a leak in the installation
The expansion vessel is not working properly
The system has not been filled correctly
There is air in the system
The pressure sensor or pressure switch is faulty or gives an incorrect reading
The system was vented recently without restoring the pressure
Zelf controleren
- Check the water pressure on the pressure gauge or display
- Check whether the system has been refilled properly
- Check for visible leaks at pipes, fittings, radiators, or the stove
- Check whether there is air in the system and vent it if necessary
- After venting, check the pressure again
- Restart the pellet stove and see whether the error returns
Advies
First refill the system to the correct operating pressure. Then check whether there is any leak and whether the system is properly vented. If the alarm remains active, have the expansion vessel, pressure sensor or pressure switch, and the complete installation checked.
Betekenis storingscode ER10:
Frequency converter module communication fault
communication between the main board of the heat pump and the inverter board has been interrupted. As a result, important control components can no longer communicate properly and the heat pump may stop working or go into fault mode.
Mogelijke oorzaak
The communication cable between the main board and the inverter board has poor contact
The plug or connector has come loose
The communication cable is damaged
There is moisture, corrosion, or dirt on the connectors or PCB
The main board is faulty
The inverter board or drive board is faulty
There is an internal electronic fault in the control system
Zelf controleren
- Switch off the heat pump completely and disconnect the power
- Check whether the connectors between the main board and inverter board are firmly connected
- Inspect the communication cable for damage, bends, or loose contact
- Check for moisture, corrosion, or visible damage on the boards and connectors
- Restart the heat pump and see whether the error code returns
Advies
If the error code keeps returning, further inspection by an installer or service technician is required. In most cases, the communication connection, main board, and inverter board need to be professionally tested. Sometimes the communication cable, inverter board, or main board needs to be replaced.
Betekenis storingscode ER10:
High water pressure
The water pressure in the system has become too high. The pellet stove therefore goes into fault or protection mode to prevent damage to the installation or its components.
Mogelijke oorzaak
The water pressure in the system is too high
The system has been overfilled
The expansion vessel is not working properly
The pressure relief valve is not functioning correctly
There is a fault in the pressure sensor or pressure switch
The system heats up while the pressure cannot be absorbed properly
Zelf controleren
- Check the water pressure on the pressure gauge or display
- Check whether the system has been overfilled
- Check whether water is coming out of the pressure relief valve
- Check whether the expansion vessel is still functioning properly
- Check whether the pressure rises sharply during heating
- Restart the pellet stove and see whether the error returns
Advies
First check whether the system has been overfilled and drain off some water if necessary. If the pressure remains too high, have the expansion vessel, pressure relief valve, and pressure sensor or pressure switch checked. Replace faulty parts if necessary.
Betekenis storingscode ER11:
Real-time fault blocked
There is a fault in the real-time clock or timekeeping function of the pellet stove, and this fault remains blocked in the control system.
Mogelijke oorzaak
The internal clock is no longer providing correct timekeeping
The pellet stove has been without power for a long period
The time and date settings have been lost
The clock backup function is not working properly
The controller or PCB has a fault in the timekeeping function
The fault has remained blocked after a previous error
Zelf controleren
- Check whether the time and date shown on the display are correct
- Check whether the pellet stove has been without power for a long time
- Check whether other settings are still stored correctly
- Set the time and date again if possible
- Restart the pellet stove and see whether the error returns
Advies
First set the correct time and date again. If the alarm remains active, have the controller, internal clock function, and PCB checked. If the fault remains blocked, it must also be reset correctly after the cause has been resolved.
Betekenis storingscode ER11:
Incorrect time/date values after long absence of mains power
The time and date settings of the pellet stove are no longer correct, usually after the stove has been without mains power for a long period.
Mogelijke oorzaak
The pellet stove has been without power for a long time
The internal clock has lost the time and date data
The backup function for time and date is not working properly
The controller was reset after a power failure
The time and date settings have not been entered again
Zelf controleren
- Check whether the time and date shown on the display are incorrect
- Check whether the stove has been without power for a long time
- Check whether other settings are still stored correctly
- Set the time and date again
- Restart the pellet stove and see whether the error disappears
Advies
First set the correct time and date again. If the error keeps returning, have the controller or internal clock function checked.
Betekenis storingscode ER12:
Exhaust gas temperature protection too high
The exhaust gas temperature of the refrigerant circuit has become too high. The heat pump therefore goes into protection mode to prevent damage to the compressor or other components.
Mogelijke oorzaak
Refrigerant leak in the system
The system is dirty or partially blocked
Insufficient compressor oil
The exhaust temperature sensor gives an incorrect reading
The water inlet temperature sensor is not connected properly or gives an incorrect reading
A blockage in the filter or refrigerant circuit
The compressor is under excessive load due to a system fault
Zelf controleren
- Check whether the heat pump starts normally or goes into fault mode immediately
- Check for visible dirt or blockage in the system
- Check whether the filters are dirty
- Check whether the wiring of the exhaust sensor and water inlet temperature sensor is properly connected
- Check whether there are any other fault codes related to flow, pressure, or sensors
- Listen for abnormal compressor noise or signs that the system is not operating normally
Advies
If the error code keeps returning, the system should be checked by an installer or refrigeration technician. The unit should be inspected for refrigerant leakage, dirt or blockage in the circuit, correct operation of the exhaust sensor and water inlet temperature sensor, and the condition of the compressor including the compressor oil level. If necessary, the filter, sensor, or other defective components must be replaced.
Betekenis storingscode ER12:
Ignition failed blocked
The pellet stove failed to ignite the pellets correctly, and this fault remains blocked in the control system.
Mogelijke oorzaak
The ignition element is faulty or not working properly
No pellets or too few pellets are reaching the burn pot
The burn pot is dirty or blocked
The pellets are damp or of poor quality
Air supply is insufficient
The flue gas fan is not operating properly
The stove is dirty internally
The ignition takes too long without a flame being established
The pellet feed or auger is not working properly
The fault has remained blocked after a previous error
Zelf controleren
- Check whether there are enough pellets in the hopper
- Check whether pellets are falling into the burn pot during startup
- Check whether the burn pot is clean and not blocked
- Check whether the air inlet and flue are free
- Check whether the flue gas fan is running
- Check whether the ignition element gets hot, as far as this can be checked safely
- Check whether the pellets are dry and of good quality
- Restart the pellet stove and see whether the error returns
Advies
First clean the burn pot and check whether the pellet feed is working correctly. Then check the pellet quality, air supply, and flue gas outlet. If the error remains active, have the ignition element, flue gas fan, auger, and control system checked. Replace faulty parts if necessary. If the fault remains blocked, it must also be reset correctly after the cause has been resolved.
Betekenis storingscode ER12:
Ignition failed
The pellet stove failed to ignite the pellets correctly. As a result, combustion does not start and the startup procedure is stopped.
Mogelijke oorzaak
The ignition element is faulty or not working properly
No pellets or too few pellets are reaching the burn pot
The burn pot is dirty or blocked
The pellets are damp or of poor quality
Air supply is insufficient
The flue gas fan is not operating properly
The stove is dirty internally
The ignition takes too long without a flame being established
The pellet feed or auger is not working properly
Zelf controleren
- Check whether there are enough pellets in the hopper
- Check whether pellets are falling into the burn pot during startup
- Check whether the burn pot is clean and not blocked
- Check whether the air inlet and flue are free
- Check whether the flue gas fan is running
- Check whether the ignition element gets hot, as far as this can be checked safely
- Check whether the pellets are dry and of good quality
- Restart the pellet stove and see whether the error returns
Advies
First clean the burn pot and check whether the pellet feed is working correctly. Then check the pellet quality, air supply, and flue gas outlet. If the error remains active, have the ignition element, flue gas fan, auger, and control system checked. Replace faulty parts if necessary.
Betekenis storingscode ER14:
Water tank temperature sensor fault
The water tank temperature sensor is not sending a correct reading or does not have a proper connection to the control system.
Mogelijke oorzaak
The sensor plug has poor contact
The sensor plug has come loose
The water tank temperature sensor is damaged
The sensor wiring is damaged
There is a fault in the connection on the PCB
Zelf controleren
- Check whether the water tank sensor plug is firmly connected
- Check whether the sensor cable is damaged
- Check for any loose contact at the sensor or on the PCB
- Restart the heat pump and see whether the error code returns
- Check whether the temperature reading on the display shows an unrealistic value
Advies
If the error code remains active, check the water tank temperature sensor and replace it if necessary. If the problem is still not solved afterwards, also have the wiring and the PCB connection checked.
Betekenis storingscode ER15:
Main power supply fault blocked
There is a problem in the main power supply of the pellet stove, and this fault remains blocked in the control system.
Mogelijke oorzaak
The mains supply has been interrupted
There is a problem with the main power supply of the stove
The plug is loose or has poor contact
The power cable is damaged
A fuse or protection device has tripped
There is a fault on the control board or in the power supply electronics
The stove has experienced power loss
The fault has remained blocked after a previous error
Zelf controleren
- Check whether the pellet stove is receiving power
- Check whether the plug is properly inserted into the socket
- Check whether the wall socket is working properly
- Check whether the power cable is damaged
- Check whether any fuses or protection devices have tripped
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active, have the power cable, mains supply, fuses, and control board checked. If necessary, a faulty part in the main power supply or control system must be replaced. If the fault remains blocked, it must also be reset correctly after the cause has been resolved.
Betekenis storingscode ER15:
Inlet water temperature sensor fault
The inlet water temperature sensor is not sending a correct reading or does not have a proper connection to the control system.
Mogelijke oorzaak
The sensor plug has poor contact
The sensor plug has come loose
The inlet water temperature sensor is damaged
The sensor wiring is damaged
There is a fault in the connection on the PCB
Zelf controleren
- Check whether the inlet water temperature sensor plug is firmly connected
- Check whether the sensor cable is damaged
- Check for any loose contact at the sensor or on the PCB
- Restart the heat pump and see whether the error code returns
- Check whether the temperature reading on the display shows an unrealistic value
Advies
If the error code remains active, check the inlet water temperature sensor and replace it if necessary. If the problem is still not solved afterwards, also have the wiring and the PCB connection checked.
Betekenis storingscode ER15:
Power supply fault
There is a problem with the power supply of the pellet stove. The stove is not receiving correct mains power or there is an interruption in the supply.
Mogelijke oorzaak
The mains power supply has been interrupted
There is a problem with the stove power supply
The plug is loose or has poor contact
The power cable is damaged
A fuse or protection device has tripped
There is a fault on the control board or in the power supply electronics
The stove has experienced power loss
Zelf controleren
- Check whether the pellet stove is receiving power
- Check whether the plug is properly inserted into the socket
- Check whether the wall socket is working properly
- Check whether the power cable is damaged
- Check whether any fuses or protection devices have tripped
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active, have the power cable, mains supply, fuses, and control board checked. If necessary, a faulty part in the power supply or control system must be replaced.
Betekenis storingscode ER16:
RS485 connection error blocked
There is a fault in the RS485 connection or communication link, and this fault remains blocked in the control system.
Mogelijke oorzaak
The RS485 wiring has come loose
The communication cable is damaged
There is poor contact in a plug or connection
There is a fault on the control board
A connected module or display is not responding properly
There is a problem in the communication settings or wiring
There is oxidation, moisture, or dirt on the connectors
The fault has remained blocked after a previous error
Zelf controleren
- Check whether the RS485 cable is firmly connected
- Check whether the cable is damaged
- Check the plugs and connections for loose contact
- Check for moisture, oxidation, or dirt on the connectors
- Restart the pellet stove and see whether the error returns
- Check whether the display or another connected module is still responding normally
Advies
If the alarm remains active, have the RS485 wiring, connectors, control board, and connected modules checked. If necessary, a faulty cable, board, or communication module must be replaced. If the fault remains blocked, it must also be reset correctly after the cause has been resolved.
Betekenis storingscode ER16:
RS485 communication error
There is a fault in the RS485 communication. As a result, the pellet stove cannot communicate properly with another component, such as the display, control board, or an external module.
Mogelijke oorzaak
The RS485 wiring has come loose
The communication cable is damaged
There is poor contact in a plug or connection
There is a fault on the control board
A connected module or display is not responding properly
There is a problem in the communication settings or wiring
There is oxidation, moisture, or dirt on the connectors
Zelf controleren
- Check whether the RS485 cable is firmly connected
- Check whether the cable is damaged
- Check the plugs and connections for loose contact
- Check for moisture, oxidation, or dirt on the connectors
- Restart the pellet stove and see whether the error returns
- Check whether the display or another connected module is still responding normally
Advies
If the alarm remains active, have the RS485 wiring, connectors, control board, and connected modules checked. If necessary, a faulty cable, board, or communication module must be replaced.
Betekenis storingscode ER16:
Evaporator coil temperature sensor fault
The evaporator coil temperature sensor is not sending a correct reading or does not have a proper connection to the control system.
Mogelijke oorzaak
The sensor plug has poor contact
The sensor plug has come loose
The evaporator coil temperature sensor is damaged
The sensor wiring is damaged
There is a fault in the connection on the PCB
Zelf controleren
- Check whether the evaporator sensor plug is firmly connected
- Check whether the sensor cable is damaged
- Check for any loose contact at the sensor or on the PCB
- Restart the heat pump and see whether the error code returns
- Check whether the temperature reading on the display shows an unrealistic value
Advies
If the error code remains active, check the external coil temperature sensor and replace it if necessary. If the problem is still not solved afterwards, also have the wiring and the PCB connection checked.
Betekenis storingscode ER17:
Air flow regulation failed
The pellet stove cannot regulate the airflow correctly. As a result, combustion does not proceed as intended and the stove goes into fault mode.
Mogelijke oorzaak
The flue gas fan is not working properly
The air supply is insufficient
The flue gas outlet is partially blocked
The air pressure regulation is not functioning correctly
The pressure switch or sensor is giving incorrect values
The fan is not running at the requested speed
The stove is dirty internally
The control board or controller is not regulating the airflow correctly
Zelf controleren
- Check whether the flue gas fan is running
- Check whether the air inlet is free
- Check whether the flue is not blocked
- Check whether the stove is dirty internally and needs cleaning
- Check the hoses, sensors, or pressure switch for loose contact or contamination
- Check whether the fan can rotate freely
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active, first clean the stove, the air inlet, and the flue. Then have the flue gas fan, pressure switch, sensors, and control system checked. Replace faulty parts if necessary.
Betekenis storingscode ER18:
Exhaust temperature sensor fault
The exhaust temperature sensor is not sending a correct reading or does not have a proper connection to the control system.
Mogelijke oorzaak
The sensor plug has poor contact
The sensor plug has come loose
The exhaust temperature sensor is damaged
The sensor wiring is damaged
There is a fault in the connection on the PCB
Zelf controleren
- Check whether the exhaust temperature sensor plug is firmly connected
- Check whether the sensor cable is damaged
- Check for any loose contact at the sensor or on the PCB
- Restart the heat pump and see whether the error code returns
- Check whether the temperature reading on the display shows an unrealistic value
Advies
If the error code remains active, check the exhaust gas temperature sensor and replace it if necessary. If the problem is still not solved afterwards, also have the wiring and the PCB connection checked.
Betekenis storingscode ER18:
Lack of fuel
The pellet stove detects that there is not enough fuel available to continue combustion properly. As a result, the stove goes into fault mode or stops combustion.
Mogelijke oorzaak
The pellet hopper is empty
No more pellets are reaching the burn pot
The auger is not operating correctly or is blocked
The pellet feed is interrupted
The pellets are jammed in the hopper or feed channel
The auger motor is not working properly
The burn pot is receiving too little fuel to maintain the flame
Zelf controleren
- Check whether there are still enough pellets in the hopper
- Check whether pellets are falling into the burn pot during operation or startup
- Check whether the pellets are jammed in the hopper or feed channel
- Check whether the auger can be heard running
- Check whether the burn pot is clean and not blocked
- Restart the pellet stove and see whether the error returns
Advies
First refill the pellet hopper and check whether the pellet feed resumes normal operation. If pellets are still not being fed, have the auger, auger motor, and feed system checked. If necessary, remove blockages or replace faulty parts.
Betekenis storingscode ER21:
Ambient temperature sensor fault
The ambient temperature sensor is not sending a correct reading or does not have a proper connection to the control system.
Mogelijke oorzaak
The sensor plug has poor contact
The sensor plug has come loose
The ambient temperature sensor is damaged
The sensor wiring is damaged
There is a fault in the connection on the PCB
Zelf controleren
- Check whether the ambient temperature sensor plug is firmly connected
- Check whether the sensor cable is damaged
- Check for any loose contact at the sensor or on the PCB
- Restart the heat pump and see whether the error code returns
- Check whether the temperature reading on the display shows an unrealistic value
Advies
If the error code remains active, check the ambient temperature sensor and replace it if necessary. If the problem is still not solved afterwards, also have the wiring and the PCB connection checked.
Betekenis storingscode ER23:
Cooling outlet water temperature ultra-cold protection
The outlet water temperature in cooling mode has become too low. The heat pump therefore goes into protection mode to prevent damage caused by excessively low temperature, insufficient water flow, or a problem in the water system.
Mogelijke oorzaak
The outlet water temperature is lower than the system protection value
The water flow is too low
The water valve is not fully open
The water pump has not started or is not operating properly
There is air in the pipework
There is a blockage in the pipework
The inlet water temperature sensor is faulty, incorrectly connected, or giving an incorrect reading
The inlet or outlet water temperature sensor has a connection problem
Zelf controleren
- Check whether the water pump is running
- Check whether the water valves are open
- Check whether there is sufficient water flow
- Check whether there is air in the system and vent the system if necessary
- Check whether the filter or part of the pipework is blocked
- Check whether the plugs of the inlet and outlet temperature sensors are firmly connected
- Check on the display whether the measured temperatures are realistic
- Restart the heat pump and see whether the error code returns
Advies
If the error code remains active, check the water system for insufficient flow, air, or blockage. Also have the water pump, water valves, and the inlet and outlet water temperature sensors checked. If necessary, the pipework should be cleaned, the system vented, or a faulty sensor replaced.
Betekenis storingscode ER23:
Boiler probe, boiler return probe, buffer tank probe, or low buffer tank probe open
One of the temperature sensors for the boiler, boiler return, buffer tank, or low buffer tank is not sending a signal. In most cases, this means the sensor connection is open or the sensor is faulty.
Mogelijke oorzaak
The sensor plug has come loose
There is a broken wire in the sensor cable
The sensor is faulty
There is poor contact in the connection
The wiring is damaged
The sensor is not properly connected to the PCB
There is a fault on the board or in the measurement circuit
Zelf controleren
- Check which sensor is connected to the boiler or buffer tank
- Check whether the sensor plug is firmly connected
- Check whether the cable is visibly damaged
- Check for loose contact or corrosion at the connection
- Check whether the sensor value is missing or unrealistic on the display
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active, check the relevant sensor, wiring, and PCB connection. If necessary, the faulty boiler, return, or buffer tank sensor must be replaced.
Betekenis storingscode ER25:
Cleaning motor fault
The cleaning motor of the pellet stove is not working properly or is no longer responding. As a result, the automatic cleaning system of the stove cannot function correctly.
Mogelijke oorzaak
The cleaning motor is faulty
The motor is mechanically stuck
There is dirt or blockage in the cleaning system
The wiring of the cleaning motor is damaged or disconnected
There is poor contact in the plug or connection
The control from the PCB is not working properly
Zelf controleren
- Check whether the cleaning motor is audibly or visibly trying to move
- Check whether there is dirt or blockage in the cleaning system
- Check whether the motor is mechanically stuck
- Check the plugs and wiring of the motor
- Check for loose contact, damage, or contamination
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active, check the cleaning motor, the wiring, and the mechanical cleaning system. Remove any blockages and replace the motor if necessary. If the problem is still not solved afterwards, also have the PCB and motor control checked.
Betekenis storingscode ER26:
Cleaning motor 2 fault
The second cleaning motor of the pellet stove is not working properly or is no longer responding. As a result, the automatic cleaning system cannot function fully or correctly.
Mogelijke oorzaak
Cleaning motor 2 is faulty
The motor is mechanically stuck
There is dirt or blockage in the second cleaning system
The wiring of cleaning motor 2 is damaged or disconnected
There is poor contact in the plug or connection
The control from the PCB is not working properly
Zelf controleren
- Check whether cleaning motor 2 is audibly or visibly trying to move
- Check whether there is dirt or blockage in the second cleaning system
- Check whether the motor is mechanically stuck
- Check the plugs and wiring of the motor
- Check for loose contact, damage, or contamination
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active, check cleaning motor 2, the wiring, and the mechanical cleaning system. Remove any blockages and replace the motor if necessary. If the problem is still not solved afterwards, also have the PCB and motor control checked.
Betekenis storingscode ER26:
Radiator overheat fault
The temperature of the radiator, drive board, or main PCB has become too high. The heat pump therefore goes into protection mode to prevent damage to the electronics or other components.
Mogelijke oorzaak
The drive board has become too hot
The main PCB has become too hot
Poor ventilation around the radiator
The fan is running too slowly
Dirt or foreign objects are present on the radiator
The air outlet is blocked
The compressor is running at an abnormal or excessively high frequency
Insufficient cooling of the electronic components
Zelf controleren
- Check whether the compressor is running at a normal frequency
- Check whether the fan is running properly and not too slowly
- Check whether there is dirt, dust, or foreign material on the radiator
- Check whether the air outlet is blocked
- Check whether the unit has enough ventilation space
- Restart the heat pump and see whether the error code returns
- Listen for abnormal fan or compressor noise
Advies
If the error code remains active, have the fan, radiator, drive board, and main PCB checked. The compressor frequency and the cooling of the electronic components should also be inspected. If necessary, dirty parts should be cleaned or faulty components should be replaced.
Betekenis storingscode ER27:
Outlet water temperature sensor fault
The outlet water temperature sensor is not sending a correct reading or does not have a proper connection to the control system.
Mogelijke oorzaak
The sensor plug has poor contact
The sensor plug has come loose
The outlet water temperature sensor is damaged
The sensor wiring is damaged
There is a fault in the connection on the PCB
Zelf controleren
- Check whether the outlet water temperature sensor plug is firmly connected
- Check whether the sensor cable is damaged
- Check for any loose contact at the sensor or on the PCB
- Restart the heat pump and see whether the error code returns
- Check whether the temperature reading on the display shows an unrealistic value
Advies
If the error code remains active, check the outlet water temperature sensor and replace it if necessary. If the problem is still not solved afterwards, also have the wiring and the PCB connection checked.
Betekenis storingscode ER27:
Cleaning motor 3 fault
The third cleaning motor of the pellet stove is not working properly or is no longer responding. As a result, the automatic cleaning system cannot function fully or correctly.
Mogelijke oorzaak
Cleaning motor 3 is faulty
The motor is mechanically stuck
There is dirt or blockage in the third cleaning system
The wiring of cleaning motor 3 is damaged or disconnected
There is poor contact in the plug or connection
The control from the PCB is not working properly
Zelf controleren
- Check whether cleaning motor 3 is audibly or visibly trying to move
- Check whether there is dirt or blockage in the third cleaning system
- Check whether the motor is mechanically stuck
- Check the plugs and wiring of the motor
- Check for loose contact, damage, or contamination
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active, check cleaning motor 3, the wiring, and the mechanical cleaning system. Remove any blockages and replace the motor if necessary. If the problem is still not solved afterwards, also have the PCB and motor control checked.
Betekenis storingscode ER29:
Return gas temperature sensor fault
The return gas temperature sensor is not sending a correct reading or does not have a proper connection to the control system.
Mogelijke oorzaak
The sensor plug has poor contact
The sensor plug has come loose
The return gas temperature sensor is damaged
The sensor wiring is damaged
There is a fault in the connection on the PCB
Zelf controleren
- Check whether the return gas temperature sensor plug is firmly connected
- Check whether the sensor cable is damaged
- Check for any loose contact at the sensor or on the PCB
- Restart the heat pump and see whether the error code returns
- Check whether the temperature reading on the display shows an unrealistic value
Advies
If the error code remains active, check the return air temperature sensor and replace it if necessary. If the problem is still not solved afterwards, also have the wiring and the PCB connection checked.
Betekenis storingscode ER32:
Heating outlet water temperature high protection
The outlet water temperature in heating mode has become too high. The heat pump therefore goes into protection mode to prevent damage caused by insufficient flow, air in the system, or a temperature measurement problem.
Mogelijke oorzaak
The outlet water temperature is higher than the system protection value
The water flow is too weak
The water pump is not operating properly or is running abnormally
The water valve is not fully open
There is air in the piping system
There is a blockage in the piping system
The inlet water temperature sensor is faulty, incorrectly connected, or giving an incorrect reading
The inlet or outlet temperature sensor has a connection problem
Zelf controleren
- Check whether the water pump is running
- Check whether the water valves are open
- Check whether there is sufficient water flow
- Check whether there is air in the system and vent the system if necessary
- Check whether the filter or part of the piping is blocked
- Check whether the plugs of the inlet and outlet temperature sensors are firmly connected
- Check on the display whether the measured temperatures are realistic
- Restart the heat pump and see whether the error code returns
Advies
If the error code remains active, check the water system for insufficient flow, air, or blockage. Also have the water pump, water valves, and the inlet and outlet water temperature sensors checked. If necessary, the piping should be cleaned, the system vented, or a faulty sensor replaced.
Betekenis storingscode ER33:
Coil temperature is too high
The condenser or coil temperature is higher than the set protection value. This fault is usually shown together with Er 32. In that case, Er 32 has display priority.
Mogelijke oorzaak
The condenser or coil temperature has become too high
Water flow is too low
The water pump is not operating properly
The water valve is not fully open
There is air in the system
There is a blockage in the piping system
Heat is not being removed properly
The temperature reading or sensor value is incorrect
The fault is related to the same cause as Er 32
Zelf controleren
- Check whether the water pump is running
- Check whether the water valves are open
- Check whether there is sufficient water flow
- Check whether there is air in the system and vent the system if necessary
- Check whether the filter or part of the piping is blocked
- Check whether the inlet and outlet temperatures shown on the display are realistic
- Restart the heat pump and see whether the error code returns
- Also check the items listed under Er 32
Advies
The solution is the same as for Er 32. Check the water system for insufficient flow, air, or blockage. Also have the water pump, water valves, and the inlet and outlet water temperature sensors checked. If necessary, the piping should be cleaned, the system vented, or a faulty sensor replaced.
Betekenis storingscode ER34:
Frequency converter module temperature too high
The temperature of the frequency converter module has become too high. The heat pump therefore goes into protection mode to prevent damage to the electronics.
Mogelijke oorzaak
The frequency converter module is overheating
The fan is not running or is not running properly
The unit is installed in a location where air cannot circulate properly
The air inlet or air outlet is blocked
Cooling of the electronics is insufficient
Dirt or blockage in or around the unit is preventing proper heat dissipation
Zelf controleren
- Check whether the fan is running
- Check whether the fan is running normally and not too slowly
- Check whether the air inlet and air outlet are not blocked
- Check whether there is enough space around the unit for ventilation
- Check whether the unit is placed too close to a wall or inside an enclosed space
- Check whether there is dirt, dust, or any blockage in or around the unit
- Restart the heat pump and see whether the error code returns
Advies
If the error code remains active, have the fan, the cooling of the frequency converter module, and the installation position of the unit checked. It should also be verified whether there is sufficient airflow around the unit and whether there is an internal fault in the electronics or the fan control.
Betekenis storingscode ER39:
Flowmeter sensor fault
The flowmeter sensor is not working properly or is no longer sending a correct signal. As a result, the pellet stove cannot properly measure or monitor the water flow.
Mogelijke oorzaak
The flowmeter sensor is faulty
The plug or connection of the flowmeter sensor has poor contact
The wiring of the flowmeter sensor is damaged
There is dirt in or around the sensor
The sensor is not sending a signal or is sending an incorrect signal
There is a fault in the control board or control system
Zelf controleren
- Check whether the flowmeter sensor plug is firmly connected
- Check whether the cable is damaged
- Check for loose contact, corrosion, or dirt at the connection
- Check whether the sensor is visibly dirty
- Restart the pellet stove and see whether the error returns
- Check whether the installation still has normal water circulation
Advies
If the alarm remains active, have the flowmeter sensor, the wiring, and the PCB connection checked. If necessary, the flowmeter sensor should be cleaned or replaced.
Betekenis storingscode ER41:
Minimum air flow in Check Up not reached
During the check-up or startup phase, the minimum required airflow is not reached. As a result, the pellet stove cannot complete the combustion or safety check correctly.
Mogelijke oorzaak
Der Lufteinlass ist teilweise verstopft
Das Abgasrohr ist verschmutzt oder blockiert
Der Abgasventilator arbeitet nicht richtig
Der Ventilator läuft zu langsam
Der Ofen ist innen verschmutzt
Der Druckschalter oder Luftsensor liefert falsche Werte
Es gibt Leckage oder Widerstand im Luft- oder Abgasweg
Die Ventilatorregelung funktioniert nicht korrekt
Zelf controleren
- Prüfen Sie, ob der Lufteinlass frei ist
- Prüfen Sie, ob das Abgasrohr nicht verstopft ist
- Prüfen Sie, ob der Abgasventilator läuft
- Prüfen Sie, ob der Ventilator sauber ist und sich frei drehen kann
- Prüfen Sie, ob der Ofen innen verschmutzt ist und gereinigt werden muss
- Prüfen Sie Schläuche, Druckschalter oder Sensoren auf lockeren Kontakt oder Verstopfung
- Starten Sie den Pelletofen neu und prüfen Sie, ob der Fehler erneut erscheint
Advies
Reinigen Sie zuerst den Lufteinlass, die Abgaswege und den Ofen selbst. Prüfen Sie danach den Abgasventilator, den Druckschalter und die Luftsensoren. Bleibt die Meldung bestehen, sollten die Ventilatorregelung sowie das gesamte Luft- und Abgassystem weiter geprüft werden.
Betekenis storingscode ER42:
Maximum air flow exceeded (FL40)
The airflow in the pellet stove has become higher than allowed. As a result, the control system intervenes to prevent incorrect combustion or airflow control faults.
Mogelijke oorzaak
The flue gas fan is running too fast
The airflow control is not adjusted correctly
The pressure switch or air sensor is giving an incorrect reading
There is a fault in the fan control
There is false air entering the system
The door, gaskets, or connections are not sealing properly
The flue is creating too much draft
The control board is driving the fan incorrectly
Zelf controleren
- Check whether the flue gas fan is audibly running too fast
- Check whether the door and gaskets are sealing properly
- Check for false air at connections, seals, or inspection covers
- Check whether the flue is creating excessive draft
- Check hoses, air sensors, or the pressure switch for loose contact or damage
- Check whether any parameters or airflow settings were recently changed
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active, have the fan control, pressure switch or air sensor, gaskets, and flue system checked. If necessary, the airflow settings must be corrected or faulty parts replaced.
Betekenis storingscode ER42:
Cooling pipe temperature sensor fault
The cooling pipe temperature sensor is not sending a correct reading or does not have a proper connection to the control system.
Mogelijke oorzaak
The sensor plug has poor contact
The sensor plug has come loose
The cooling pipe temperature sensor is damaged
The sensor wiring is damaged
There is a fault in the connection on the PCB
Zelf controleren
- Check whether the cooling pipe temperature sensor plug is firmly connected
- Check whether the sensor cable is damaged
- Check for any loose contact at the sensor or on the PCB
- Restart the heat pump and see whether the error code returns
- Check whether the temperature reading on the display shows an unrealistic value
Advies
If the error code remains active, check the cooling pipe temperature sensor and replace it if necessary. If the problem is still not solved afterwards, also have the wiring and the PCB connection checked.
Betekenis storingscode ER44:
Door error
The pellet stove detects that the door is open or that the door signal is not being transmitted correctly. As a result, the stove goes into fault or protection mode.
Mogelijke oorzaak
The door is not closed properly
The door switch is not working properly
The door contact sensor is faulty
The wiring of the door contact is damaged or disconnected
There is poor contact in the plug or connection
The door does not seal properly due to wear or dirt
The control board is not receiving a correct signal from the door contact
Zelf controleren
- Check whether the door is fully closed
- Check whether the door locks properly
- Check whether the seal or latch is dirty or worn
- Check the door contact or door switch for damage
- Check the wiring and plugs of the door contact
- Restart the pellet stove and see whether the error returns
Advies
First close the door properly and check whether the door contact works correctly. If the alarm remains active, have the door contact, wiring, latch, and control board checked. Replace faulty parts if necessary.
Betekenis storingscode ER47:
No encoder signal from auger
The pellet stove is not receiving an encoder signal from the auger. As a result, the control system is not getting correct feedback about the operation or speed of the auger motor.
Mogelijke oorzaak
The auger encoder is faulty
The auger motor is faulty
The encoder wiring is loose or damaged
There is poor contact in the connector
The auger is not running or not running correctly
The control board is not receiving a proper signal
Parameter P81 is set to a mode where an encoder signal is required
Zelf controleren
- Check whether the auger is audibly or visibly running
- Check the plugs and wiring of the auger motor and encoder
- Check for loose contact, damage, or contamination
- Check whether the auger is mechanically blocked
- Check whether parameter P81 is set to 1 or 2
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active, have the auger motor, encoder, wiring, and control board checked. If necessary, replace the encoder or the complete auger motor. Also check whether parameter P81 is set correctly.
Betekenis storingscode ER48:
Auger speed regulation failed
The pellet stove is receiving an encoder signal from the auger, but the speed regulation is not working correctly. This means the auger is not running at the requested speed.
Mogelijke oorzaak
The auger motor is faulty or worn out
The encoder is sending a signal, but the values are incorrect
The auger is running too slowly or irregularly
The wiring of the auger or encoder has poor contact
There is mechanical resistance or blockage in the auger
The control board is unable to regulate the auger speed correctly
Parameter P81 is set to a mode where encoder-based speed regulation must be active
Zelf controleren
- Check whether the auger runs during startup or operation
- Check whether the auger sounds irregular or runs at an abnormal speed
- Check whether the auger is mechanically blocked
- Check the plugs and wiring of the auger motor and encoder
- Check for loose contact, damage, or contamination
- Check whether parameter P81 is set to 1 or 2
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active, have the auger motor, encoder, wiring, and control board checked. If necessary, replace the auger motor or encoder. Also check whether parameter P81 is set correctly for this type of speed regulation.
Betekenis storingscode ER52:
Microswitch fault blocked
The pellet stove detects a fault in the microswitch, and this fault remains blocked in the control system.
Mogelijke oorzaak
The microswitch is faulty
The microswitch is not being actuated properly
The plug or wiring of the microswitch has poor contact
The wiring is damaged or disconnected
The mechanical part that operates the microswitch is not working properly
There is dirt or blockage around the microswitch
The fault has remained blocked after a previous error
Zelf controleren
- Check whether the microswitch is being actuated correctly
- Check whether the switch is stuck or dirty
- Check the plugs and wiring of the microswitch
- Check for loose contact, damage, or contamination
- Check whether the moving part that activates the switch is functioning properly
- Restart the pellet stove and see whether the error returns
Advies
If the alarm remains active, have the microswitch, wiring, and mechanical actuation checked. If necessary, the microswitch must be cleaned, reconnected, or replaced. If the fault remains blocked, it must also be reset correctly after the cause has been resolved.
Betekenis storingscode ER56:
Modified hydraulic plant
The pellet stove detects that the hydraulic installation has been changed or that the configured hydraulic setup no longer matches the actual system layout.
Mogelijke oorzaak
A modification has been made to the installation
The hydraulic configuration has been changed in the controller
A sensor, pump, or valve is connected differently than before
The installation parameters have been changed
The control board has detected a change in the configuration
Maintenance or replacement of components has resulted in a different system layout
Zelf controleren
- Check whether any work has recently been carried out on the installation
- Check whether pumps, valves, or sensors are connected differently
- Check whether any settings or parameters have been changed
- Check whether the current hydraulic layout matches the configured setup
- Restart the pellet stove and see whether the error returns
- Check whether there are other fault codes related to sensors, pump, or the water circuit
Advies
Check whether the hydraulic installation still matches the controller settings. If the error remains active, have the hydraulic configuration, connected components, and parameter settings checked and corrected if necessary.
Betekenis storingscode ER62:
Economizer inlet temperature sensor fault
The economizer inlet temperature sensor is not sending a correct reading or does not have a proper connection to the control system.
Mogelijke oorzaak
The sensor plug has poor contact
The sensor plug has come loose
The economizer inlet temperature sensor is damaged
The sensor wiring is damaged
There is a fault in the connection on the PCB
Zelf controleren
- Check whether the economizer inlet temperature sensor plug is firmly connected
- Check whether the sensor cable is damaged
- Check for any loose contact at the sensor or on the PCB
- Restart the heat pump and see whether the error code returns
- Check whether the temperature reading on the display shows an unrealistic value
Advies
If the error code remains active, check the economizer inlet temperature sensor and replace it if necessary. If the problem is still not solved afterwards, also have the wiring and the PCB connection checked.
Betekenis storingscode ER63:
Economizer outlet temperature sensor fault
The economizer outlet temperature sensor is not sending a correct reading or does not have a proper connection to the control system.
Mogelijke oorzaak
The sensor plug has poor contact
The sensor plug has come loose
The economizer outlet temperature sensor is damaged
The sensor wiring is damaged
There is a fault in the connection on the PCB
Zelf controleren
- Check whether the economizer outlet temperature sensor plug is firmly connected
- Check whether the sensor cable is damaged
- Check for any loose contact at the sensor or on the PCB
- Restart the heat pump and see whether the error code returns
- Check whether the temperature reading on the display shows an unrealistic value
Advies
If the error code remains active, check the economizer outlet temperature sensor and replace it if necessary. If the problem is still not solved afterwards, also have the wiring and the PCB connection checked.
Betekenis storingscode ER64:
DC fan 1 fault
DC fan 1 is not operating properly or does not have a proper connection to the control system.
Mogelijke oorzaak
Poor contact in the DC fan plug
The plug has come loose
The wiring of the DC fan is damaged
The DC fan is faulty
There is a fault in the connection on the PCB
The fan is blocked by dirt or a foreign object
Zelf controleren
- Check whether the DC fan 1 plug is firmly connected
- Check whether the fan cable is damaged
- Check whether the fan can rotate freely and is not blocked
- Check whether there is dirt or a foreign object inside the fan
- Restart the heat pump and see whether the error code returns
- Observe whether the fan does not run at all or runs irregularly
Advies
If the error code remains active, reconnect the cable to the DC fan and check whether the fan operates correctly. If necessary, the DC fan must be replaced. If the problem is still not solved afterwards, also have the wiring and the PCB connection checked.
Betekenis storingscode ER66:
DC fan 2 fault
DC fan 2 is not operating properly or does not have a proper connection to the control system.
Mogelijke oorzaak
Poor contact in the DC fan plug
The plug has come loose
The wiring of the DC fan is damaged
The DC fan is faulty
There is a fault in the connection on the PCB
The fan is blocked by dirt or a foreign object
Zelf controleren
- Check whether the DC fan 2 plug is firmly connected
- Check whether the fan cable is damaged
- Check whether the fan can rotate freely and is not blocked
- Check whether there is dirt or a foreign object inside the fan
- Restart the heat pump and see whether the error code returns
- Observe whether the fan does not run at all or runs irregularly
Advies
If the error code remains active, reconnect the cable to the DC fan and check whether the fan operates correctly. If necessary, the DC fan must be replaced. If the problem is still not solved afterwards, also have the wiring and the PCB connection checked.
Betekenis storingscode ER67:
Low pressure switch fault
The low pressure switch is not operating properly or does not have a proper connection to the control system. As a result, the heat pump cannot correctly monitor the low pressure in the system.
Mogelijke oorzaak
The low pressure switch is faulty
The low pressure switch plug has poor contact
The plug has come loose
The wiring of the low pressure switch is damaged
There is a fault in the connection on the PCB
There is an internal problem in the control or protection system
Zelf controleren
- Check whether the low pressure switch plug is firmly connected
- Check whether the switch cable is damaged
- Check for any loose contact at the switch or on the PCB
- Restart the heat pump and see whether the error code returns
- Check whether there are any other fault codes related to pressure or refrigerant
Advies
If the error code remains active, reconnect the low pressure switch and check whether the connection is correct. If necessary, the low pressure switch must be replaced. If the problem is still not solved afterwards, also have the wiring and the PCB connection checked.
Betekenis storingscode ER68:
High pressure switch fault
The high pressure switch is not operating properly or does not have a proper connection to the control system. As a result, the heat pump cannot correctly monitor the high pressure in the system.
Mogelijke oorzaak
The high pressure switch is faulty
The high pressure switch plug has poor contact
The plug has come loose
The wiring of the high pressure switch is damaged
There is a fault in the connection on the PCB
There is an internal problem in the control or protection system
Zelf controleren
- Check whether the high pressure switch plug is firmly connected
- Check whether the switch cable is damaged
- Check for any loose contact at the switch or on the PCB
- Restart the heat pump and see whether the error code returns
- Check whether there are any other fault codes related to pressure or refrigerant
Advies
If the error code remains active, reconnect the high pressure switch and check whether the connection is correct. If necessary, the high pressure switch must be replaced. If the problem is still not solved afterwards, also have the wiring and the PCB connection checked.
Betekenis storingscode ER69:
Low pressure protection
The operating pressure is below the setpoint. This fault usually occurs together with a low pressure fault, but it can also appear on its own.
Mogelijke oorzaak
The system pressure is too low
There is a refrigerant leak
The refrigerant charge is too low
The evaporator is dirty or blocked
Airflow across the evaporator is insufficient
The fan is not running properly
Water flow is too low
The return water temperature is too low
The filter or dirt separator is clogged
The low pressure protection or pressure sensor is giving an incorrect value
Zelf controleren
- Check whether the evaporator is clean
- Check whether the fan is operating properly
- Check whether the unit is defrosting properly
- Check whether there is sufficient water flow
- Check the filter, dirt separator, and pump
- Check whether the return temperature is extremely low
- Restart the heat pump and see whether the error code returns
- Check whether Er 06 is also visible
Advies
The solution is the same as for Er 06. Have the system checked for leakage, refrigerant shortage, evaporator contamination, defrost problems, water flow, and correct operation of the low pressure protection. If necessary, defective parts should be replaced or the system should be adjusted again.
Betekenis storingscode ER70:
High pressure protection
The operating pressure is above the setpoint. This fault usually occurs together with a high pressure fault, but it can also appear on its own.
Mogelijke oorzaak
The system pressure is too high
The condenser is dirty or blocked
Airflow through the unit is insufficient
The fan is not running properly or not running at all
Water flow is too low
The filter or dirt separator is clogged
The water-side heat exchanger is dirty or scaled
Valves are not fully open
There is too much refrigerant in the system
The high pressure protection or pressure sensor is giving an incorrect value
Zelf controleren
- Check whether the fan is running
- Check whether the condenser is clean
- Remove dirt, leaves, and dust from the unit
- Check whether all valves are open
- Check system pressure and water flow
- Check the filter and dirt separator
- Check whether the temperature difference between flow and return becomes too high
- Restart the heat pump and see whether the error code returns
- Check whether Er 05 is also visible
Advies
The solution is the same as for Er 05. Have the system checked for contamination, fan operation, water flow, scaling, sensors, refrigerant charge, and correct operation of the high pressure protection. If necessary, parts should be cleaned, replaced, or adjusted again.
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