What to do if the pellet supply flap does not close on my Viessmann Boiler?
If the pellet supply flap on your Viessmann Boiler isn't closing after the supply is completed, here's what you should do: Open the pellet hopper, then clean the flap and put it back into its operational state. After that, press the reset button on the control unit. If that doesn't work, you may need to replace the control unit.
What to do if the combustion chamber door is open on my Viessmann VITOLIG 300 Boiler?
If the combustion chamber door on your Viessmann Boiler is open, make sure to close it.
How to fix faulty boiler water temperature sensor in Viessmann Boiler?
If the boiler water temperature sensor is faulty, replace it.
How to fix faulty combustion chamber temperature sensor in Viessmann VITOLIG 300?
Replace the combustion chamber temperature sensor.
What to do if the grate shaker motor or limit switch faulty in Viessmann Boiler?
To address a faulty grate shaker motor or limit switch, replace the motor or limit switch.
What to do if the heating system emergency stop switch is switched off in Viessmann Boiler?
If the heating system emergency stop switch is switched off, switch it back ON.
What to do if the grate shaker blocked in Viessmann VITOLIG 300?
If the grate shaker is blocked, clean the burner pot.
How to fix faulty ignition element in Viessmann VITOLIG 300 Boiler?
Replace the ignition element.
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