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What does fault code 50 mean on a Viessmann Boiler?
If your Viessmann Boiler displays fault code 50, it indicates a short circuit in the cylinder temperature sensor. You should check the sensors.
Why is my Viessmann Boiler showing fault code 38?
If your Viessmann Boiler displays fault code 38, it indicates a lead break in the boiler water temperature sensor. You should check the boiler water temperature sensor.
What does fault code 30 mean on a Viessmann VITOCROSSAL 300 and how to fix it?
If your Viessmann Boiler displays fault code 30, it indicates a short circuit in the boiler water temperature sensor. You should check the boiler water temperature sensor.
What does fault code 18 mean on my Viessmann Boiler?
If your Viessmann Boiler displays fault code 18, it means there's a lead break in the outside temperature sensor. You should check the outside temperature sensor.
How to troubleshoot fault code 10 on a Viessmann Boiler?
If your Viessmann Boiler displays fault code 10, this indicates a short circuit in the outside temperature sensor. You should check the outside temperature sensor.
What to do if my Viessmann VITOCROSSAL 300 Boiler displays fault code 9E?
If your Viessmann Boiler displays fault code 9E, it indicates there's no flow rate, the flow rate is too low in the collector circuit, or the temperature limiter has responded. To resolve this, check the solar circuit and solar circuit pump. Then, acknowledge the fault message.
Viessmann VITOCROSSAL 300 fan not running: what could be the cause?
If the fan in your Viessmann Boiler is not running, it could be that the fan is faulty, or the cables are faulty or broken. Check the cables and replace the fan if required.
How to reset the on hold program on a Viessmann Boiler?
If your Viessmann Boiler is in the on hold program, it could be due to a lack of gas at the VPS gas pressure switch or because the safety chain is not closed. Reset it by holding down the reset button until '9' flashes.
Why does the air pressure switch switch off during operation in my Viessmann Boiler?
If the air pressure switch switches off during operation in your Viessmann Boiler, it might be due to flue gas back pressure or backed-up condensate. Remove the flue gas back pressure, check for backed-up condensate, and reset the burner control unit.
How to fix a Viessmann VITOCROSSAL 300 Boiler when the burner doesn't start?
If the burner on your Viessmann Boiler doesn't start, it could be due to several reasons. First, the gas supply pressure might be too low, causing the gas pressure switch to turn off; in this case, you should check the gas flow pressure and the gas pressure switch. Another potential cause is a lack of gas; if this is the case, notify your gas supply utility. Also, the parameter memory stick might not be correctly plugged in or could be faulty; check the parameter memory stick or replace it. Finally, the connected display might be invalid; try using a current display.
General| Model | VITOCROSSAL 300 |
|---|---|
| Category | Boiler |
| Boiler type | Condensing Boiler |
| Heat Exchanger Material | Stainless Steel |
| Warranty | 2 years |
| Efficiency | Up to 98% |
| Control | Vitotronic control system |
| Fuel Type | Natural Gas |
| Standard efficiency | 98% |
