UA-64 High
Your boiler's computer memory card is experiencing a communication error or has failed during an internal update, causing the system to stop working.
Technical description: Blocking during boiler chip card (BBC) update
Typical repair cost: £120-450 (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 UA-64 — no call-out fees, no surprises.
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Parts commonly replaced
- Boiler Chip Card (BCC)
- Main PCB (Printed Circuit Board)
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