How much does it cost to fix boiler error code AL79?

Typical repair cost for the boiler AL79 fault is £120-350 including labour.

AL79 High

Boiler Fault Code AL79

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code AL79 appears across 1 boiler brand 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 detected an internal electronic error or a communication failure that is preventing it from heating your home. (As reported on Vokera Mynute 28E / 35E)

Pick your boiler brand for the AL79 fix

Vokera AL79 9 models

Source

Information for the AL79 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