BoilerFaultCodes 9A 362 High
Boiler Fault Code 9A 362
Also written as 9A362 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 9A 362 appears across 1 boiler brand and 10 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler’s internal computer chip is giving an error message because it thinks it has been fitted with the wrong component or cannot communicate with it. (As reported on Worcester Bosch Junior 28i)
Pick your boiler brand for the 9A 362 fix
Source
Information for the 9A 362 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