S.22 High
Your boiler has detected a problem with the flow of water while trying to heat your taps, which usually means water isn't moving through the system correctly.
Technical description: Hot water handling pump flow error
Typical repair cost: £180-450 (including labour)
DIY fix possible
Check that all service valves under the boiler are fully openEnsure your radiators are bled and there is no trapped air in the systemVerify that the system pressure is between 1.0 and 1.5 bar on the display
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
- Secondary Heat Exchanger
- Hot Water Pump
- Flow Sensor
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