Vitotronic 300 Medium
Your boiler's internal computer has lost its specific configuration settings, causing it to run in a basic backup mode rather than its normal programmed routine.
Technical description: Control mode
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 Vitotronic 300 — no call-out fees, no surprises.
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Parts commonly replaced
- Control Unit PCB
- Coding Plug
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