How much does it cost to fix boiler error code a/3/2?

Typical repair cost for the boiler a/3/2 fault is £150-250 including labour.

a/3/2 High

Boiler Fault Code a/3/2

Also written as A32 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code a/3/2 appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is struggling to detect the flow of water because of a faulty connection or a damaged sensor, which will prevent your heating and hot water from working correctly. (As reported on Worcester Bosch GB162)

Pick your boiler brand for the a/3/2 fix

Worcester Bosch a/3/2 1 model

Source

Information for the a/3/2 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