How much does it cost to fix boiler error code A15?

Typical repair cost for the boiler A15 fault is £80-220 including labour.

A15 High

Boiler Fault Code A15

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code A15 appears across 3 boiler brands and 5 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 or a sensor has failed. (As reported on Potterton Powermax HE)

Pick your boiler brand for the A15 fix

Ariston A15 1 model Ferroli A15 3 models Potterton A15 1 model

Source

Information for the A15 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