BoilerFaultCodesTechnical description
Minimum set boiler water temperature in case of external demand
What causes this fault?
This fault occurs when there is a mismatch between the boiler's internal computer and the external smart controls or thermostat. It usually happens because the minimum heat level requested by the external system is set higher than what the boiler is programmed to allow, causing a configuration conflict.
DIY fix possible
Check your external thermostat or heating controller settings to ensure the target temperature isn't set unusually low.Restart the boiler to see if the advisory code clears.No immediate action is required if your heating and hot water are currently working as expected, as this is often an advisory status code.
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