BoilerFaultCodesYour boiler is currently working correctly but is not receiving a signal from your thermostat or taps to turn on the heating or hot water.
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: No demand.
What causes this fault?
This status indicates that the boiler is in standby mode and is simply waiting for a signal to start. It occurs when your thermostat is turned down too low or your timer is set to an 'off' period, meaning the boiler thinks you don't currently need heating. If your home is cold but this code is showing, it usually means the communication link between your thermostat and the boiler has failed.
This code is frequently seen during the transition into autumn when homeowners first try to turn their heating back on and discover their thermostat batteries are dead or the wireless signal has dropped.
DIY fix possible
Check that your room thermostat is turned up higher than the current room temperature.Ensure your heating programmer or timer is set to an 'On' period.Replace the batteries in your wireless wall thermostat if the screen is blank.
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