Low Information
Neon I3 on Ideal Classic SE15P FF

Your boiler is receiving power and is in standby mode, waiting for a signal to provide heating or hot 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.

Technical description

Mains electricity ON.

What causes this fault?

This is not actually a fault, but a status indicator showing that your boiler has successfully connected to the mains power supply and is functioning correctly. It means the system is currently in standby mode, simply waiting for your thermostat or programmer to tell it to start heating the radiators or water. If your home is cold while this is displayed, the issue is likely with your external controls or pump rather than the boiler itself.

DIY fix possible

Check that your room thermostat is turned up high enough to demand heatEnsure your programmer or digital timer is set to 'ON' or 'AUTO'Verify that the boiler's temperature control knob is not set to the 'Off' position

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