9.1.6 High

Boiler Fault Code 9.1.6

Also written as 916 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code 9.1.6 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 heat pump has stopped providing hot water because a sensor that monitors the water temperature has developed a fault or is disconnected. (As reported on Ideal HP290)

Pick your boiler brand for the 9.1.6 fix

Ideal 9.1.6 1 model

Source

Information for the 9.1.6 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