BoilerFaultCodesYour boiler is briefly keeping its internal pump running to safely move heat away from the system after it has finished warming your home.
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: Water pump overrun – time for heat mode
What causes this fault?
This is a normal operational feature rather than a fault, occurring when the boiler finishes a heating cycle and needs to dissipate residual heat. It happens when the internal pump keeps running for a pre-set period to move hot water away from the heat exchanger, preventing the unit from overheating internally. The status will clear automatically once the internal temperature has dropped to a safe level.
DIY fix possible
No action is required as this is a normal operational status message, not a fault.Wait a few minutes for the status code to change once the cooling cycle finishes.Ensure your radiator valves are open to allow for proper heat dissipation.
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A boiler cover plan would cover faults like D.1 — no call-out fees, no surprises.
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