BoilerFaultCodesYour boiler is currently cooling itself down after a heating cycle and will resume normal operation shortly.
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: Fan and pump overrun
What causes this fault?
This status occurs because the boiler needs to remove excess heat from the internal heat exchanger after it has finished a period of heating. The fan and pump continue to run for a few minutes to safely circulate water and air, ensuring the internal components don't experience heat stress. It is a normal safety function of the system rather than a mechanical failure.
DIY fix possible
Wait 5-10 minutes for the boiler to complete its cooling cycleEnsure your thermostat or timer is still calling for heatCheck that your radiator valves are open to allow heat to dissipate
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.5 — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.
Vaillant Ecomax 613 2 E is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
Affiliate links — we may earn a commission at no extra cost to you.