26
TROUBLESHOOTING
NOTE
Error messages are displayed on the control panel
and in the MyVallox Home and MyVallox Cloud
services.
FAULT
CAUSE
MEASURES
Error message:
Extract air fan
The extract air fan has stopped.
Make sure that the fan is not running. The fan cabling and
operation must be checked, and if necessary the fan must be
replaced. Contact the service centre.
Error message:
Supply air fan
The supply air fan has stopped.
Make sure that the fan is not running. The fan cabling and
operation must be checked, and if necessary the fan must be
replaced. Contact the service centre.
Error message:
Temperature sensor 1/2/3/4/5
The temperature sensor indicated on
the user interface is damaged.
The sensor installation must be checked, and if required the
sensor must be replaced. Contact the service centre.
Error message:
Supply air temperature
The supply air temperature is too
high.
The operation of the post and additional heating resistor
must be checked. Contact the service centre.
Error message:
Bus fault
Problems with the data transfer bus.
Ensure that the control panel and any external sensors are
connected correctly and are functioning properly.
The ventilation unit is not
working; the control panel is
not working.
Power input to the unit is lost or the
safety switch catch of the door is not
touching the safety switch.
Check:
• Fuse in the fuse box
• The glass tube fuse in the unit. Contact the service centre.
• Press the safety switch all the way down and test if the unit
can be turned on. If the unit can be turned on, ensure that
the safety switch catch is touching the safety switch.
The ventilation unit is working,
but the control panel is not
working.
Either the control panel 24 VDC
power is lost, or the control panel is
damaged.
Check the cables from the unit to the control panel. Contact
the service centre.
USING THE UNIT