S.07 Low
Your boiler is briefly running the pump after the heating has switched off to cool the system down, but it is taking longer than expected to move the residual heat away.
Technical description: Heating mode – pump overrun error
Typical repair cost: £100-280 (including labour)
DIY fix possible
Check that all radiator valves (TRVs) are fully open to allow water to circulateEnsure the system pressure is between 1.0 and 1.5 bar on the front displayClear any air from the system by bleeding your radiators
Protect yourself from future repair bills
A boiler cover plan would cover faults like S.07 — no call-out fees, no surprises.
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Parts commonly replaced
- Circulation pump
- Automatic air vent
- Main PCB
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