5 High
Your boiler has stopped working because the internal computer cannot confirm that the fan is spinning at the correct speed to safely clear away exhaust fumes.
Technical description: No tacho from fan
Typical repair cost: £250-450 (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 5 — no call-out fees, no surprises.
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Parts commonly replaced
- Extraction Fan
- Main PCB
- Wiring Loom
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