BoilerFaultCodesYour boiler is having trouble communicating with the wall-mounted thermostat control because of a setup or configuration error.
This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.
Technical description: Incorrect remote control Vitotrol 200/300 coding
What causes this fault?
This fault occurs when there is a mismatch between the boiler's settings and the physical remote control device installed on your wall. It essentially means the boiler is looking for a specific type of controller that it cannot find or recognize, often due to an incorrect configuration code being entered into the system. In some cases, a loose connection or damaged wiring between the boiler and the thermostat can also trigger this communication failure.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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