Low
S.7 on Vaillant ecoTEC Regular

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.

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.

What the manual says

Manufacturer manual

Pump over run

From this model's manual
Verified against the Vaillant Ecotec installation & service manual, page 43.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

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 →
Boiler cover options

Avoid the next call-out bill

Monthly cover means no unexpected bills when your boiler breaks down.

Approved partner
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Get a quote →

Affiliate links. We may earn a commission at no extra cost to you.

Related fault codes

S. 0View →S. 8View →F.20View →

Related guides you might find useful

Banging / kettling / whistling noise

Each noise points to a different fault.

Read →

Yellow or orange flame — CO safety

Safety-critical — turn off, read this.

Read →

Is boiler cover worth it?

Break-even maths on monthly cover.

Read →