Low
LED 4 (Flashing light) on Ferroli F 30 B

Your boiler is currently in standby mode and is simply waiting for a signal from your thermostat to start heating your home or water.

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

Central heating stand-by

From this model's manual
Verified against the Bm Ferroli F30b Installation Servicing Instructions Manual 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

Check your room thermostat is set high enough to call for heat.Ensure the central heating timer or programmer is currently in an 'ON' period.Verify the boiler's own mode selector is set to a heating position.

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