How much does it cost to fix boiler error code 33.76?

Typical repair cost for the boiler 33.76 fault is £150-250 including labour.

33.76 High

Boiler Fault Code 33.76

Also written as 3376 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code 33.76 appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has detected an issue with the internal gas valve settings during its ignition process and has shut down to prevent unsafe operation. (As reported on Baxi Barcelona)

Pick your boiler brand for the 33.76 fix

Baxi 33.76 1 model

Source

Information for the 33.76 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 7 July 2026