Medium
F.579 on Viessmann Vitodens 200-W B2KE-19

The boiler's control system has detected a fault with the room thermostat sensor for the second heating zone, so it can't respond properly to the temperature in that room, and that zone may not heat as expected.

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

Control mode without room influence - Short circuit, room temperature sensor, heating circuit 2

From this model's manual
Verified against the Viessmann/Viessmann Vitodens 100 W Wb1a 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

All 170 fault codes on the Vitodens 200-W B2KE-19

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

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