S.7 High
Your boiler is struggling to circulate water properly after turning off the heating, which is likely caused by a blockage or a pump issue.
Technical description: Heating mode – pump overrun error
Typical repair cost: £180-450 (including labour)
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Protect yourself from future repair bills
A boiler cover plan would cover faults like S.7 — no call-out fees, no surprises.
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Parts commonly replaced
- Circulation pump
- Check valve
- Diverter valve
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