High
LED1 on Ferroli DOMINAplus F28D

Your boiler is not detecting the stable electrical power it needs to function correctly, which is usually caused by a loose connection or an issue with your home's power supply.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Mains electricity on/low voltage on

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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