Low
FH on Ferroli Optimax HE 31 C

Your boiler is simply performing an automatic self-check to clear out any trapped air from the pipes and will finish this process on its own within two minutes.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Air purge function (active for the first 120 seconds after ignition)

From this model's manual
Verified against the Ferroli Optimax He 31 C installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Do nothingWait 120 secondsAllow the boiler to complete its cycle naturally

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