BoilerFaultCodesYour boiler is correctly receiving power from your home's electrical supply and is in its normal standby mode.
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 is not actually a fault, but rather a status indicator showing that your boiler has a healthy electrical supply. It confirms that the internal control system is powered up and the unit is waiting for a signal from your thermostat to begin heating. If your radiators are cold while this light is on, the issue usually lies with your external heating controls rather than the boiler itself.
DIY fix possible
Check that the thermostat is turned up to call for heatEnsure the programmer/timer is set to ONCheck that the gas supply is turned on if the boiler fails to ignite despite the power light being on
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
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Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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