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Fault finding by symptom

Heat pump communication faults

Communication faults can involve wiring, polarity, connections, controls, addressing or component failure. Start with the exact system architecture and manufacturer information before making assumptions.

TradeAssistIQ lets you start with the symptom and then narrow the diagnosis around the manufacturer and appliance you are actually working on.

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Treat the symptom as the starting point

Similar symptoms can have different causes across different appliances. Manufacturer-specific information, the operating sequence and actual measurements should guide the next test rather than a generic list of parts.

Use the technical evidence available

Where supported by approved technical knowledge, TradeAssistIQ can surface relevant diagnostic steps, expected readings, component tests, wiring information and manufacturer documentation for the identified appliance.

Useful next pages

Heating engineer technical assistantDiagnose this fault

TradeAssistIQ is an engineering support tool. Diagnosis, testing, repair and commissioning must be carried out by appropriately qualified persons and in accordance with the appliance manufacturer’s instructions and applicable regulations.