BoilerFaultCodes AL52 High
Boiler Fault Code AL52
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code AL52 appears across 2 boiler brands and 9 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has stopped working because of an internal communication error with its main brain, often caused by a failing circuit board. (As reported on Vokera Mynute 10E)
Pick your boiler brand for the AL52 fix
Source
Information for the AL52 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