Medium
bd on Viessmann Vitodens 200-W WB2C 30kW Combi

The boiler has lost contact with the thermostat controlling your second heating zone, so that zone may not be heating properly, though the rest of the system should still work.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

What the manual says

Manufacturer manual

Communication error, remote control Vitotrol heating circuit 2 (with mixer)

From this model's manual
Verified against the Viessmann/Viessmann Vitodens 200 W Wb2c Service 5692857 installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

bCView →bEView →

All 82 fault codes on the Vitodens 200-W WB2C 30kW Combi

Seeing a different code? Every code this model can display, in one place.

4C9A9b9C9E9F1018202830384044485051585990919293949899A7b0b1b5b7b8bAbbbCbEbFC1C2C3C4C5C6C7C8CdCECFd6d7d8dAdbdCdddEdFE0E1E3E4E5E7E8EAEbECEdEEEFF0F1F2F3F8F9FAFCFdFEFF

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