F.85 High
Your boiler has shut down because its internal electrical components have become too hot and need to cool down.
Technical description: Electronics temperature too high
Typical repair cost: £150-450 (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 F.85 — no call-out fees, no surprises.
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Parts commonly replaced
- Main PCB
- Internal wiring harness
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