BoilerFaultCodesYour boiler is not broken; it is simply continuing to run the internal pump for a few minutes to safely cool down the heat exchanger after providing heating or hot 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: Water pump overrun – time for heat mode
What causes this fault?
This status occurs when the boiler has finished heating your radiators and needs to dissipate the high temperatures remaining inside the unit. The system keeps the internal pump running to move residual heat away from the heat exchanger and into the pipework to prevent overheating or stress on the components. This is a normal safety sequence and the boiler will automatically return to its ready state once the temperature drops.
This code is more visible during winter when the central heating is used frequently, as the pump needs to run more often to cool the system down after long periods of operation.
DIY fix possible
Wait for 5 to 10 minutesCheck if the display changes once the cooling cycle finishesEnsure your room thermostat is turned down if you want the pump to stop sooner
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