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At Hewa you will find secondary PCBs for ALPS EXCLUSIVE ARTIC and URBAN LINE heat pumps. This category is intended for installers, service technicians and technical buyers looking for a suitable PCB for detection, signal processing, fault diagnosis or replacement.
A secondary PCB supports specific functions within the heat pump, such as current detection, power detection, signal transmission or additional electronic actuation. Always check the exact heat pump model, article number, EAN, type code, connection and technical compatibility of the original PCB before ordering.
Secondary PCBs for ALPS EXCLUSIVE ARTIC and URBAN LINE heat pumps
Secondary PCBs are used in compatible ALPS EXCLUSIVE ARTIC and URBAN LINE heat pumps as additional electronic control or communication boards. Depending on the technical configuration, a secondary PCB may process signals, support components or provide communication between the main controller and specific parts within the heat pump.
For service, diagnosis or replacement, the secondary PCB must match the exact configuration of the unit. The correct spare part depends on the series, unit type, article number, PCB code, software version, connector layout, supply voltage, communication connection, mounting position and technical configuration of the heat pump.
Important checks for a secondary PCB
- Check whether the secondary PCB is suitable for the relevant ALPS EXCLUSIVE ARTIC or URBAN LINE version.
- Compare the article number, PCB code, software version, hardware version, connector positions and plug connections with the original PCB.
- Inspect the PCB for burn damage, moisture ingress, corrosion, loose solder joints, damaged components or discoloured terminals.
- Look for fault codes, communication issues, failure of specific components, abnormal measured values or a heat pump that does not respond correctly to control signals.
- Also check the power supply, fuses, wiring harness, connectors, control PCB, sensors, control panel and peripheral components before replacing the PCB.
Application, replacement and technical attention points
A secondary PCB may need to be replaced when a specific control section no longer operates, communication between components is lost, fault codes keep returning or components are not controlled correctly. Overvoltage, moisture, short circuit, incorrect wiring or defective peripheral components can also cause damage.
Work on electrical control components must be carried out by a qualified technician. After replacement, supply voltage, grounding, connector positions, parameter settings, communication, component control, fault messages and full operation of the heat pump controller should be checked.
Frequently asked questions about secondary PCBs
What is a secondary PCB used for?
A secondary PCB supports the electronic control of the heat pump. Depending on the configuration, it can process signals, support communication or control specific components inside the unit.
When should a secondary PCB be replaced?
Replacement may be required in case of burn damage, moisture ingress, communication problems, persistent fault codes, defective component control or when diagnosis confirms that the secondary PCB is faulty.
Does every secondary PCB fit every ALPS EXCLUSIVE heat pump?
No, secondary PCBs differ by series, unit type and technical configuration. Always check the article number, PCB code, software version, connector layout, supply voltage, communication connection and mounting position.
Can a fault also be caused by the main PCB or wiring?
Yes, a fault may appear to be caused by a defective secondary PCB while the actual cause is the control PCB, wiring harness, connectors, fuses, sensors, control panel or other peripheral components.
Can a secondary PCB be installed by the end user?
No, installation and diagnosis of secondary PCBs must be carried out by a qualified technician. Electrical safety, connector positions, parameter checks and system diagnosis must be technically verified.