What to do if Viessmann Vitodens 111-W Boiler shows F8 error?
If your Viessmann Boiler displays the F8 error, it means the fuel valve closes too late. Check the gas train and both control paths. Press the reset button.
How to fix Viessmann Vitodens 111-W Boiler fault code F1?
If your Viessmann Boiler is showing fault code F1, it means the maximum flue gas temperature has been exceeded. To resolve this, check the heating system fill level, check the circulation pump, and vent the system. You can also try pressing 'Reset'.
What causes fault code F2 on a Viessmann Vitodens 111-W and how to fix it?
Fault code F2 on your Viessmann Boiler indicates that the temperature limiter has responded. You should check the heating system fill level, check the circulation pump and vent the system. Also, check the temperature limiter and connecting cables. You can also try pressing 'Reset'.
How do I troubleshoot Viessmann Vitodens 111-W fault code F9?
If your Viessmann Boiler shows fault code F9, it means the fan speed is too low during burner start. Check the fan, fan connecting cables, and power supply, and also check the fan control. You can also try pressing 'Reset'.
What does F3 error mean on a Viessmann Vitodens 111-W?
The F3 error on a Viessmann Boiler indicates that a flame signal is already present at burner start. Check the ionization electrode and connecting cables and press the reset button.
Why Viessmann Vitodens 111-W fan starts no after approx. 1 min?
The fan in your Viessmann Boiler might not start after approximately 1 minute due to fault F9. Check the fan, fan connecting cables, power at the fan, and fan control.
What to do if my Viessmann Vitodens 111-W Boiler shows error F4?
If your Viessmann Boiler displays the error code F4, it indicates that there is no flame signal. To resolve this, check the ignition/ionisation electrode and connecting cables, check the gas pressure, check the gas train, ignition and condensate drain. You may also need to press the reset button.
What to do if Viessmann Boiler shows F2 error?
If your Viessmann Boiler shows the F2 error, it means the temperature limiter has responded. You should check the heating system fill level, the circulation pump, and vent the system. Also, inspect the temperature limiter and its connecting leads. Press the reset button.
Viessmann Boiler displays F8, what could be the reason?
If your Viessmann Boiler displays fault code F8, it means the fuel valve closes too late. Check the gas train and both control paths. You can also try pressing 'Reset'.
What to do if Viessmann Vitodens 111-W Boiler shows fault code F3?
If your Viessmann Boiler shows fault code F3, it means a flame signal is already present at burner start. Check the ionisation electrode and connecting cable. You can also try pressing 'Reset'.
General| Type | Gas Condensing Boiler |
|---|---|
| Dimensions | 900 x 600 x 480 mm |
| Energy Efficiency Class | A |
| Mounting | Wall-mounted |
| Water Pressure | Max. 3 bar |
| Max. Flow Temperature | 80 °C |
| Efficiency | Up to 98% |
| Hot Water Storage | 46 liters |
| Fuel Type | Natural gas or LPG |
| DHW Output | Up to 200 liters in 10 minutes (depending on model and cold water temperature) |
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