BoilerFaultCodesYour boiler has power, but it is currently waiting for you to turn on your external thermostat or heating programmer.
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: Electricity supply ON but secondary controls switched OFF and boiler control switch in mid position
What causes this fault?
This code appears when the boiler is receiving electrical power but is not being told to fire up by your external equipment. It typically means your wall thermostat is set too low or your heating programmer is currently in an 'off' period. The boiler is essentially in a standby state, waiting for a signal that heat is needed in the house.
This is very common in autumn when homeowners first try to use their heating but the room thermostat is still set to a low summer temperature.
DIY fix possible
Ensure your wall thermostat is turned up high enough to call for heatCheck that your heating programmer or timer is set to 'ON'Ensure the boiler control knob is turned fully to the 'On' or 'Run' position, not left in the middle
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