Applicable Systems
Vitodens
Symptoms
Communication between devices has been interrupted or lost. The system cannot exchange control data properly.
Possible Causes
- Communication cable damaged or disconnected
- Network termination or addressing incorrect
- Device communication module failed
Troubleshooting Steps
- Step 1: Check communication cable continuity and connections at both ends
Cable intact and properly connected - Step 2: Verify network addressing and termination settings
Addressing and termination correct - Step 3: Test or replace the communication module if fault persists
Communication restored and stable
How to Reset
To reset: Restore communication and clear the fault from the controller.
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Source: Viessmann Vitodens Boiler Manual, Viessmann Werke GmbH
Category: Home Boiler
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