C6 215 High
Your boiler has detected that the internal fan is spinning faster than it should, which has caused the system to shut down for safety.
Technical description: Fan speed too high – check the fan harness and connector
Typical repair cost: £180-450 (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 C6 215 — 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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