How much does it cost to fix boiler error code H03.02?

Typical repair cost for the boiler H03.02 fault is £150-300 including labour.

H03.02 High

Boiler Fault Code H03.02

Also written as H0302 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code H03.02 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 shut down because it keeps losing its flame while heating up and is unable to stay lit. (As reported on Remeha Quinta Ace 30)

Pick your boiler brand for the H03.02 fix

Remeha H03.02 1 model

Source

Information for the H03.02 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 7 July 2026