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What causes fault code 20 on a Viessmann Boiler?
Fault code 20 on a Viessmann Boiler is caused by a short circuit in the system flow temperature sensor. You should check the low loss header sensor.
What should I check if my Viessmann Vitodens 200-W is showing fault code dC?
If your Viessmann Boiler is showing fault code dC, check the room temperature sensor for heating circuit 3. The fault code indicates a short circuit in that sensor (with mixer).
How do I troubleshoot fault code 30 on my Viessmann Vitodens 200-W?
Fault code 30 on your Viessmann Boiler indicates a short circuit in the boiler water temperature sensor. Check the boiler water temperature sensor.
What does fault code CE mean on a Viessmann Vitodens 200-W Boiler?
Fault code CE on a Viessmann Boiler indicates a communication error with the external extension. Check the connections and coding address "2E".
How to resolve fault code dE on a Viessmann Vitodens 200-W?
To resolve fault code dE on a Viessmann Boiler, check the room temperature sensor for heating circuit 2 and the remote control settings. This code indicates a lead break in that sensor (with mixer).
How to fix fault code bE on a Viessmann Vitodens 200-W?
To fix fault code bE on a Viessmann Boiler, check the connections, lead, coding address "A0", and remote control settings. This code indicates a communication error with the remote control Vitotrol for heating circuit 3 (with mixer).
What steps should I take for fault code C8 on my Viessmann Boiler?
For fault code C8 on your Viessmann Boiler, check the setting of coding address "E5". This code indicates a communication error with the external variable speed heating circuit pump for heating circuit 3 (with mixer).
How to acknowledge a fault on a Viessmann Vitodens 200-W?
To acknowledge a fault, follow the instructions on the display.
Why does the fault message reappear on my Viessmann Vitodens 200-W Boiler the day after I acknowledged it?
The fault message is re-displayed because the fault message facility has restarted.
Why does the fault display show 'E' on my Viessmann Boiler?
If the fault display on your Viessmann Boiler shows 'E', it indicates a fault in the burner control unit. You should check the burner control unit to resolve this issue.
General| Type | Condensing Boiler |
|---|---|
| Installation | Wall-mounted |
| Heat Exchanger Material | Stainless steel |
| Efficiency | Up to 98% |
| Control | Vitotronic control |
| Fuel Type | Natural gas, LPG |
| Dimensions | 700 mm |
| Warranty | Up to 10 years |
| Output range | 1.8 to 35 kW (depending on model) |
