How much does it cost to fix boiler error code 31E?

Typical repair cost for the boiler 31E fault is £80-180 including labour.

31E High

Boiler Fault Code 31E

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code 31E appears across 1 boiler brand and 7 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is having trouble 'talking' to your smart thermostat or external heater controls, meaning it may not receive instructions to turn on or off. (As reported on Ravenheat HE 80/90 / 25-30s)

Pick your boiler brand for the 31E fix

Ravenheat 31E 7 models

Source

Information for the 31E fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026