612 High
The built-in fan that safely clears exhaust gases out of your home is not spinning, causing your boiler to shut down for safety.
Technical description: Fan fault – fan isn’t starting up
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 612 — no call-out fees, no surprises.
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Parts commonly replaced
- Fan assembly
- Control PCB
- Wiring harness
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