High
31 on Ravenheat Rsf

Your boiler has sensed that the gases escaping through the exhaust pipe are too hot or the sensor detecting them is broken, so it has shut down for safety.

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

Failed flue temperature – the flue sensor needs checking or replacing

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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