To Next PageTo Next PageWhy is the fan speed too low during burner start on my Viessmann Vitodens 200-W WB2B?
If your Viessmann Boiler displays error 'F9', indicating the fan speed is too low during burner start, you should check the fan, the fan cables and power supply, and the fan control. Press RESET.
What does error code Eb mean on a Viessmann Vitodens 200-W WB2B?
If your Viessmann Boiler displays error 'Eb', and the boiler control initiated a combustion calibration but could not complete the process, ensure the heat generated by the boiler is being removed. Check the connecting cable and the ionization electrode, and inspect the flue gas system for flue gas recirculation. Verify pump operation and check the switching points of the flow switch. Check the coding card, gas valve, and coding address 82. Also see address 12. Press ” RESET”.
What does error E5 mean on a Viessmann Vitodens 200-W WB2B Boiler?
If your Viessmann Boiler displays error 'E5', it indicates an internal fault. Check the ionization electrode and cables, and ensure the flue gas system is tight. Press the 'RESET' button.
Why is the fan not at standstill on my Viessmann Vitodens 200-W WB2B Boiler?
If your Viessmann Boiler displays error 'FA', indicating the fan is not at a standstill, you should check the fan, its connecting cables, and the fan control. Also, check the fan control itself. Then, press the 'RESET' button.
What does error code FC mean on a Viessmann Vitodens 200-W WB2B Boiler?
If your Viessmann Boiler shows the error code 'FC', it could mean the gas valve is faulty, the modulation valve control is faulty, or the vent system is blocked. You should check the gas valve and the vent system. Then, press the 'RESET' button.
What does it mean when the flame signal is already present at burner start on Viessmann Vitodens 200-W WB2B Boiler?
If your Viessmann Boiler displays error 'F3', and the flame signal is already present at burner start, you should check the ionization electrode and connecting cable. Then, press the 'RESET' button.
Why does the flame go out immediately on my Viessmann Vitodens 200-W WB2B Boiler?
If your Viessmann Boiler displays error 'EF', and the flame is lost immediately after it has built (during the safety time), check the gas supply. Also, check the flue gas/exhaust pipe/air intake for flue gas recirculation, and inspect the ionization electrode, replacing it if necessary. Press the 'RESET' button.
What causes Viessmann Vitodens 200-W WB2B Boiler to overheat?
If your Viessmann Boiler displays the error 'F1', which indicates that the maximum flue gas temperature has been exceeded (230ºF / 110ºC), you should check the heating system fill level and bleed air from the system. After the system has cooled down, press the 'RESET' button.
What to do if the flame signal is missing on Viessmann Boiler at burner start?
If the Viessmann Boiler displays error 'EE', indicating a missing or weak flame signal at burner start, you should check the ionization electrode and cable. Also, check the gas supply, condensate drain, ignition, and ignition module. Then, press the 'RESET' button.
What to do if the fixed high limit switch is open on a Viessmann Boiler?
If your Viessmann Boiler shows the error 'F2', which means the fixed high limit switch is open (activated), you should check the heating system fill level and the circulation pump. Bleed air from the system and inspect the fixed high limit switch and connecting cables. Finally, press the 'RESET' button.
General| Type | Condensing Boiler |
|---|---|
| Fuel Type | Natural Gas/LPG |
| Heat Exchanger | Stainless Steel Inox-Radial |
| Installation | Wall-mounted |
| Max. Working Pressure | 3 bar |
| Efficiency | Up to 98% |
| Modulation Ratio | Up to 1:6 |
| Control | Vitotronic control system |
