High
83 on Ideal Response SE

Your boiler's internal electrical control unit is failing to communicate with the fan, which means the system cannot safely start the heating process.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Fan runs but no power on PCB 37

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

81View →82View →84View →

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