F0 High
Your boiler's main control computer is missing a vital activation chip, which means the system cannot start up or provide any heat.
Technical description: Boiler Chip Card (BCC) not fitted
Typical repair cost: £120-250 (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 F0 — no call-out fees, no surprises.
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Parts commonly replaced
- Boiler Chip Card (BCC)
- Printed Circuit Board (PCB)
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