BoilerFaultCodesYour boiler is receiving electrical power but has been placed into standby mode or is waiting for a command to start heating.
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: The main electricity supply is On
What causes this fault?
This occurs because the boiler is powered on but hasn't received a signal from your external controls to actually start burning gas. The most common reason is that your room thermostat is set too low or your wall programmer is currently in an 'off' period. It can also happen if the batteries in your wireless thermostat have run out, preventing the signal from reaching the boiler.
This is frequently seen during the transition into autumn when homeowners forget to turn their room thermostats up or haven't updated their heating schedules for the colder weather.
DIY fix possible
Check that your room thermostat is turned up high enough to call for heatEnsure your programmer or external timer is set to an 'On' periodCheck that the temperature control knob on the boiler itself is not set to the 'Off' position
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