Your boiler is temporarily running the pump to cool itself down after a period of activity, which is a normal operation rather than a fault.
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 overrun
What causes this fault?
This status occurs when the boiler has finished heating and needs to circulate water to dissipate residual heat from the internal heat exchanger. It is a protective measure to ensure the internal components do not overheat once the burners have turned off. The boiler is simply 'catching its breath' after a period of work and will return to normal operation shortly.
DIY fix possible
Wait for the pump symbol to disappear as it usually stops after a few minutesCheck that your radiator valves are open to help heat dissipateEnsure there is power to the boiler and no other fault codes are showing
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like S.7 — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.