BoilerFaultCodes 70/72/74 High
Boiler Fault Code 70/72/74
Also written as 707274 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 70/72/74 appears across 1 boiler brand and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is struggling to circulate water, likely because the internal valves are shut or the internal pump has seized up. (As reported on Vokera Linea HE)
Pick your boiler brand for the 70/72/74 fix
Source
Information for the 70/72/74 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