BoilerFaultCodes F.087 High
Boiler Fault Code F.087
Also written as F087 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code F.087 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 failing to light because the component responsible for creating the ignition spark is not receiving power or is incorrectly plugged in. (As reported on Vaillant ecoTEC Plus 836)
Pick your boiler brand for the F.087 fix
Source
Information for the F.087 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