How much does it cost to fix boiler error code A59?

Typical repair cost for the boiler A59 fault is £120-350 including labour.

A59 High

Boiler Fault Code A59

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code A59 appears across 1 boiler brand and 3 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 electrical surge or an unusually high voltage coming from the mains power supply, causing it to shut down for safety. (As reported on Vokera Vibe MAX S)

Pick your boiler brand for the A59 fix

Vokera A59 3 models

Source

Information for the A59 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