How much does it cost to fix boiler error code 8Y?

Typical repair cost for the boiler 8Y fault is £60-140 including labour.

8Y High

Boiler Fault Code 8Y

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code 8Y 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 paused because a safety switch related to your underfloor heating has detected a problem or has been disconnected. (As reported on Buderus 600-28C)

Pick your boiler brand for the 8Y fix

Buderus 8Y 1 model

Source

Information for the 8Y 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