Medium
51 on Alpha FMK

Your boiler has lost its wireless connection to the remote thermostat or control unit.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Climatic RF communication fault

DIY fix possible

Check if the batteries in your room thermostat need replacingEnsure the thermostat is within range of the boiler and not blocked by large metal objectsTry resetting the boiler and re-pairing the wireless controller according to the manual

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