Low
dE on Viessmann Vitodens 200-W B2HA-19

The boiler has lost the signal from the room thermostat sensor for its second heating zone, so that zone may not heat to the right temperature, though the rest of the system should keep working.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Lead break, room temperature sensor, heating circuit 2 (with mixer)

From this model's manual
Verified against the Viessmann/Viessmann Vitodens 200 W B2ha B2ka 5772909 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

dCView →dFView →

All 83 fault codes on the Vitodens 200-W B2HA-19

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

4C9A9b9C9E9F101819202830384044485051585990919293949899A3A7b0b1b5b7b8bAbbbCbdbEbFC1C2C3C4C5C6C7C8CdCFd6d7d8dAdbdCdddFE0E1E3E4E5E7E8EAEbECEdEEEFF0F1F2F3F8F9FAFCFdFEFF

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