D.96 High
Your boiler has lost its unique configuration settings and currently thinks it is a blank unit from the factory.
Technical description: Factory setting
Typical repair cost: £90-180 (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 D.96 — no call-out fees, no surprises.
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Parts commonly replaced
- Main PCB (Printed Circuit Board)
- DSN (Device Specific Number) memory chip
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