BoilerFaultCodesYour boiler is currently idle and waiting for a signal from your thermostat or timer to start heating your home or 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: Stand-by mode
What causes this fault?
This code appears when the boiler is functioning normally but has no current demand for heating or hot water. It means the internal systems are powered up and ready to go, but they are waiting for you to turn up your thermostat or for a timed heating period to begin. If your home is cold and this code is showing, the issue likely lies with your external controls or thermostat batteries rather than the boiler itself.
This status is more frequently observed during the summer months when the central heating is turned off and the boiler only activates briefly to provide hot water.
DIY fix possible
Check that your room thermostat is turned up higher than the current room temperature.Ensure your programmer or timer is set to an 'ON' period.Verify that the boiler mode dial is set to the correct heating or hot water position.
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