How much does it cost to fix boiler error code 5A?

Typical repair cost for the boiler 5A fault is £0-80 including labour.

5A Low

Boiler Fault Code 5A

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code 5A 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’s control panel has been locked manually or due to a button sequence error, preventing you from changing any settings. (As reported on Ideal Maximiser SE)

Pick your boiler brand for the 5A fix

Ideal 5A 1 model

Source

Information for the 5A 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