How much does it cost to fix boiler error code AL71?

Typical repair cost for the boiler AL71 fault is £90-160 including labour.

AL71 High

Boiler Fault Code AL71

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code AL71 appears across 1 boiler brand and 8 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 the sensor that measures the temperature of the water leaving the unit, meaning it cannot safely regulate heat. (As reported on Vokera Unica HE)

Pick your boiler brand for the AL71 fix

Vokera AL71 8 models

Source

Information for the AL71 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