Low
LED 4 (Flashing light) on Ferroli DOMINAplus F28D

Your boiler is perfectly healthy and is simply waiting for a signal from your thermostat or hot water tap to start heating.

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.

Technical description

Central heating stand-by

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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