How much does it cost to fix boiler error code ALL 10?

Typical repair cost for the boiler ALL 10 fault is £120-200 including labour.

ALL 10 High

Boiler Fault Code ALL 10

Also written as ALL10 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code ALL 10 appears across 1 boiler brand and 8 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is struggling to detect the temperature of the water coming from your hot water tap, which means it will likely stop producing hot water until it is fixed. (As reported on Sime Murelle HE Combi with Cylinder)

Pick your boiler brand for the ALL 10 fix

Sime ALL 10 8 models

Source

Information for the ALL 10 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