Low
Pump Overrun - Central Heating on Potterton Envoy 30

Your boiler is briefly keeping the pump running to move leftover heat away from the unit, which is a normal part of the cooling-down process.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

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

Control Status: Pump Overrun (Central Heating)

DIY fix possible

No action required; this is a normal operating function.Wait for the cycle to complete naturally.Check that at least one radiator (usually the one in the room with the thermostat) has its valves fully open.

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