BoilerFaultCodes.com
S.22 Low Information

Your boiler is currently moving water through the system to prepare for heating or to cool itself down after use.

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: Pump running

What causes this fault?

This is a normal operational status rather than a fault, occurring when the boiler's internal pump circulates water around your radiators or cylinder. It most commonly happens during a 'pre-run' to ensure everything is safe before the burner ignites, or as an 'overrun' to dissipate heat after the heating has turned off.

Typical repair cost £0 (including labour)

DIY fix possible

Wait for 5-10 minutes as the boiler is likely just finishing a cycleCheck that your room thermostat is set to your desired temperatureEnsure there is water pressure in the system if you have a gauge visible

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.22 — no call-out fees, no surprises.

Top rated
OpenFix
Boiler & heating care plans
Get a quote →
Hometree
from £12.95/month
Get a quote →
HomeServe
from £8.00/month
Get a quote →

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

Related fault codes