Troubleshooting
The table below provides instructions for troubleshooting and repair.
Important:
We recommend you always use the latest software version. You can check the latest version at https://cloud.vallox.com.
Note:
Error messages are displayed on the control panel and in the MyVallox Home and MyVallox Cloud services.
| Error | Cause | Follow these steps |
|---|---|---|
|
Error message: Extract air fan | The extract air fan has stopped. | Make sure the fan has really stopped. Check the fan wires and operation. If necessary, the fan must be replaced. Contact the service centre. |
|
Error message: Supply air fan | The supply air fan has stopped. | Make sure the fan has really stopped. Check the fan wires and operation. If necessary, the fan must be replaced. Contact the service centre. |
|
Error message: Temperature sensor 1/2/3/4/5 | A temperature sensor indicated by the user interface is damaged. | Check the sensor installation. If necessary, the sensor must be replaced. Contact the service centre. |
|
Error message: High supply air temperature | The supply air temperature is too high. | Check the operation of the post-heating and additional heating resistors. Make sure the resistors are on in the user interface. If necessary, contact the service centre. |
|
Error message: Low supply air temperature | The supply air temperature is too low. | Check the operation of the post-heating and additional heating resistors. Make sure the resistors are on in the user interface. If necessary, contact the service centre. |
|
Error message: Bus error | Problems in data transmission. | Make sure that the control panel and any external sensors are connected and working correctly. |
| Both the ventilation unit and the control panel do not work. | The unit’s power supply has been cut off. |
Check:
|
| The ventilation unit works but the control panel does not work. | The control panel’s 24 VDC supply has been cut off, there are problems in data transmission or the control panel is damaged. |
|