S.26 Low
Your boiler's internal cooling fan is staying on longer than expected after a heating cycle to ensure any remaining gases are cleared.
Technical description: Fan overrun
Typical repair cost: £0-120 (including labour)
DIY fix possible
Wait up to 10 minutes to see if the fan stops automaticallyCheck that the thermostat is not calling for heatReset the boiler using the flame symbol button
Protect yourself from future repair bills
A boiler cover plan would cover faults like S.26 — no call-out fees, no surprises.
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Parts commonly replaced
- None (Normal operation)
- PCB
- Fan assembly
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