17 High
Your boiler has stopped working because the fan is not receiving the correct electrical power needed to safely clear exhaust fumes.
Technical description: Possible issue with fan voltage
Typical repair cost: £180-350 (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 17 — no call-out fees, no surprises.
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Parts commonly replaced
- Fan assembly
- Printed Circuit Board (PCB)
- Wiring harness
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