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

Typical repair cost for the boiler AL 10 fault is £90-180 including labour.

AL 10 High

Boiler Fault Code AL 10

Also written as AL10 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code AL 10 appears across 1 boiler brand and 19 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has detected an issue with an internal sensor meant for additional system monitoring, which is usually caused by a connection error or a software setting mismatch. (As reported on Sime Murelle Pro HE Combi)

Pick your boiler brand for the AL 10 fix

Sime AL 10 19 models

Source

Information for the AL 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