6.A Low

Boiler Fault Code 6.A

Also written as 6A — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code 6.A appears across 2 boiler brands and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is displaying a memory log showing a previously recorded error message, rather than a current problem. (As reported on Worcester Bosch CDi)

Pick your boiler brand for the 6.A fix

Ideal 6.A 1 model Worcester Bosch 6.A 2 models

Source

Information for the 6.A 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 31 August 2026