BoilerFaultCodesYour boiler is performing a self-check to ensure water is moving correctly and the fan is working before it attempts to ignite.
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: Fan and water pump return water
What causes this fault?
This status occurs as the boiler completes a safety sequence to confirm that the internal pump is circulating water properly and the fan is operating at the correct speed. It is a normal part of the start-up process where the system verifies all conditions are safe before allowing the burner to ignite. If the code stays on screen too long, it may suggest a slight delay in the pump or fan reaching their required operating levels.
DIY fix possible
No action is required as this is a normal status message, not a permanent error.Wait 5-10 minutes for the boiler to complete its internal system check.Ensure your radiator valves are open to allow water to circulate properly during the check.
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