Low
FH on Ferroli Energy Top B

Your boiler is currently running a brief automatic process to clear trapped air from the system, and it will return to normal operation in 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

Identifies the heating system air venting cycle (120 seconds).

From this model's manual
Verified against the Ferroli Energy Top B 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

Wait for 120 seconds for the cycle to finish automatically.Do not turn the boiler off or adjust the settings.If the boiler remains on this code after 5 minutes, restart the system.

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