BoilerFaultCodesYour heat pump has stopped working because its internal computer components are not communicating correctly with each other due to an incorrect configuration setting.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Inverter not matched to Outdoor PCB dip switch setting Error
What causes this fault?
This fault occurs when the physical switches on the main control board do not align with the specific requirements of the inverter drive. It is typically caused by a component being replaced without the correct configuration being applied, or a communication failure between the two boards that prevents them from recognising each other's settings.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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