BoilerFaultCodes 9266 Medium
Boiler Fault Code 9266
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 9266 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's internal pressure-balancing unit is failing, which often leads to the system losing pressure or leaking water during operation. (As reported on Vokera Maxin)
Pick your boiler brand for the 9266 fix
Source
Information for the 9266 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