BoilerFaultCodesYour boiler is continuing to run the pump to help cool down the internal components after a period of heavy use, which is a normal protective function.
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: Pump over run is operating.
What causes this fault?
This occurs when the boiler detects that the internal heat exchanger is still very hot after the burners have turned off. To prevent heat damage to the components, the boiler keeps the water pump running to dissipate that excess heat into the system. It is a standard safety feature rather than a malfunction of the unit.
This code is more frequent during winter months when the boiler is working harder for longer periods to meet high heating demands.
DIY fix possible
Wait for 5 to 10 minutes for the internal temperature to dropEnsure your radiator valves are open to allow water to circulateCheck if the display changes back to a temperature reading once the cycle finishes
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