BoilerFaultCodes 8.2.5 High
Boiler Fault Code 8.2.5
Also written as 825 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 8.2.5 appears across 2 boiler brands and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning This code indicates a communication error between your boiler's internal controls, meaning the unit cannot safely manage its heating operations. (As reported on Baxi 825 Combi)
Pick your boiler brand for the 8.2.5 fix
Source
Information for the 8.2.5 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