BoilerFaultCodes F.672 Medium
Boiler Fault Code F.672
Also written as F672 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code F.672 appears across 1 boiler brand and 2 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 communicate with its solar panel components, meaning it cannot properly monitor or move heat from the sun to your water tank. (As reported on Viessmann Vitodens 100-W WB1A)
Pick your boiler brand for the F.672 fix
Source
Information for the F.672 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