E83 High
Your boiler's internal computer parts are having trouble talking to each other, which means the system has stopped working for safety.
Technical description: Communication error
Typical repair cost: £150-£350 (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 E83 — no call-out fees, no surprises.
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Parts commonly replaced
- Wiring harness
- Main Printed Circuit Board (PCB)
- Display interface
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