How much does it cost to fix boiler error code AL40?

Typical repair cost for the boiler AL40 fault is £0-120 including labour.

AL40 High

Boiler Fault Code AL40

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code AL40 appears across 1 boiler brand and 12 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 the water pressure in the central heating system is too low. (As reported on Vokera Mynute 28E / 35E)

Pick your boiler brand for the AL40 fix

Vokera AL40 12 models

Source

Information for the AL40 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