BoilerFaultCodesYour boiler is receiving power and has identified that the mains electricity is on, which is a normal status indicator rather than a fault.
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: Mains electricity ON.
What causes this fault?
This indicator appears because the boiler's control board has successfully detected that the main power supply is switched on and active. It is not a malfunction, but rather a status light confirming that the internal electronics are receiving the electrical current needed to operate. If your boiler isn't firing up, the issue lies elsewhere, as this light simply proves the unit is getting power.
DIY fix possible
Check if the boiler is responding to your thermostat or central heating controlsEnsure there are no other flashing lights or error codes displayedIf the heating isn't working despite this light, try a simple reset of the control panel
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