BoilerFaultCodes T2 High
Boiler Fault Code T2
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code T2 appears across 2 boiler brands and 12 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your heat pump has detected a problem with a temperature sensor inside the outdoor unit, which has caused the system to stop working to protect itself. (As reported on Ideal HP290)
Pick your boiler brand for the T2 fix
Source
Information for the T2 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