How much does it cost to fix boiler error code F.57?

Typical repair cost for the boiler F.57 fault is £80-150 including labour.

F.57 Low

Boiler Fault Code F.57

Also written as F57 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 31 August 2026

Fault code F.57 appears across 3 boiler brands and 5 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler's internal computer is not receiving or recognizing input from your wall-mounted thermostat, so it has reverted to a basic default setting to keep your home warm. (As reported on Viessmann Vitodens 200-W B2KF Combi)

Pick your boiler brand for the F.57 fix

Glow-worm F.57 1 model Vaillant F.57 1 model Viessmann F.57 3 models

Source

Information for the F.57 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 31 August 2026