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'.
What does 59 mean on my Viessmann Vitodens 111-W?
The error code 59 on your Viessmann Boiler indicates a lead break in the outlet temperature sensor. Check the sensor.
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.
Why does my Viessmann Water Heater burner stop and restart quickly?
If the burner on your Viessmann Water Heater stops below the set boiler water temperature and restarts immediately, check the flue system for tightness, looking for flue gas recirculation. Also, check the gas flow pressure.
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'.
General safety guidance for users to prevent accidents and material losses.
Explanation of warning symbols like 'Danger' and 'Please note' used in the manual.
Critical safety precautions for authorized contractors during installation and maintenance.
Safety guidelines for operating the appliance, handling components, and common operational risks.
Procedures for handling gas leaks, flue gas, fire, water leaks, and system faults.
Explanation of symbols, key terms, and the proper application of the heating system.
Details about the control unit, different operating modes, and system configurations.
Overview of factory settings and advice for energy efficiency and user comfort.
How to interact with the control unit via touchscreen and understand status displays.
Guide to accessing and adjusting various system settings through the main menu.
Determining heating schedules by dividing the day into time phases for central heating and DHW.
Step-by-step instructions for setting time programs for central heating and DHW.
Setting desired temperatures and adjusting heating curves for optimal room heating.
Using 'holiday at home' and 'holiday program' functions for energy saving during absences.
Instructions for turning DHW heating on/off and adjusting the domestic hot water temperature.
Enabling and using the Eco function for efficient DHW heating, especially with combi boilers.
Adjusting display brightness, standby mode, and the status Lightguide indicator.
Setting the system's date and time, and establishing internet and WiFi connections.
Viewing current system data, checking software licenses, and WiFi status.
Identifying and interpreting fault messages, including burner lockouts and error codes.
Procedures for activating and deactivating the emissions test mode for flue gas checks.
Steps for safely switching off the heating system with or without frost protection.
Instructions for turning the system on, checking pressure, and verifying operation.
Diagnosing and resolving issues with room temperature and domestic hot water supply.
Addressing burner lockouts, fault codes, and general heating system errors.
Guidance on cleaning the appliance and the importance of regular professional inspections.
Checking safety valves and maintaining potable water filters for system integrity.
Detailed explanation and graphical representation of heating curves.
Information on environmentally responsible disposal of packaging and the heating system.
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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