How much does it cost to fix boiler error code Er 02?

Typical repair cost for the boiler Er 02 fault is £100-280 including labour.

Er 02 High

Boiler Fault Code Er 02

Also written as ER02 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Er 02 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 switched itself off because it has detected that the water inside has become or is becoming too hot. (As reported on Biasi Advance 25C)

Pick your boiler brand for the Er 02 fix

Biasi Er 02 1 model

Source

Information for the Er 02 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