To Next PageTo Next PageWhat to do if my Viessmann Boiler displays fault F9 after about 1 minute?
If your Viessmann Boiler displays fault F9 after approximately 1 minute, and the fan starts, check the fan itself, its connecting cables, the power supply to the fan, and the fan control.
General| Model | Vitodens 050-W BP JD |
|---|---|
| Category | Boiler |
| Type | Wall-mounted gas condensing boiler |
| Energy Efficiency Class | A |
| Flue Gas Connection | 60/100 mm |
| Power Supply | 230 V / 50 Hz |
| Heat Exchanger Material | Stainless steel |
| Water Pressure (max) | 3 bar |
| Fuel Type | Natural Gas / LPG |
| Water Temperature Range | 30°C to 80°C |
Explains safety symbols like Danger, Please note, and Note.
Provides guidance on performing repairs on the appliance components.
Safety steps to take when water leaks from the appliance.
Ensuring proper function and safety of flue systems and air supply.
Instructions on what to do if gas is detected.
Instructions on what to do if flue gas is detected.
Steps for mounting the boiler and connecting it.
Detailed steps for connecting the water lines.
Procedure for connecting the gas supply.
Wiring instructions for electrical connections.
Connecting the appliance to the power supply.
Overview of the steps for commissioning, inspection, and maintenance.
How to check the gas supply (flow) pressure.
Step-by-step guide to removing the burner.
Procedure for checking gas connections for leaks.
Step-by-step guide to filling the heating system.
How to check static and supply gas pressure.
How to check the expansion vessel and system pressure.
Checking gas equipment tightness during operation.
Procedure for measuring and checking CO2 levels.
Adjusting heating output and verifying CO2 content.
Procedure for checking and adjusting the electrode gap.
Instructions for cleaning the heat exchanger.
How to check and clean the condensate drain and siphon.
Step-by-step guide to installing the burner.
Flowchart showing operational sequence and potential faults.
Explanation of fault codes and display indicators.
Detailed explanation of fault codes and corresponding troubleshooting measures.
Steps for removing the front panel for repair access.
Procedure for checking the outside temperature sensor.
Procedure for checking the boiler water temperature sensor.
Procedure for checking the outlet temperature sensor.
Procedure for checking the flue gas temperature sensor.
Procedure for checking the temperature limiter.
