S.22 High
Your boiler has detected that hot water is being called for, but it believes the pump is running when it shouldn't be or there is a circulation issue preventing proper operation.
Technical description: DHW demand – error pump running
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.22 — no call-out fees, no surprises.
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Parts commonly replaced
- Internal Pump
- Main PCB
- Flow Sensor
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