Vallox 096 MV Manual - Troubleshooting
33
© Vallox Oy - All rights reserved
USING THE UNIT
TROUBLESHOOTING
NOTE
Error messages are displayed on the control panel and in the
MyVallox Home and MyVallox Cloud services.
CONDENSING WATER (USER)
In the heating season, the extract air humidity condenses
to water. In new buildings, condensation runoff can form
rapidly. Condensed water must be able to freely leave the
unit.
At some time before the heating season begins (e.g. during
autumn maintenance), check that the water seal or the
condensing water outlet in the bottom pool are not clogged.
To check this, pour some water into the pool. Clean as
required.
FAULT
CAUSE
MEASURES
Error message:
Extract air fan stopped
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 stopped
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:
Bus fault
Problems with the data transfer
bus.
Make sure that the Modbus bus is connected correctly,
and that the devices connected to it are properly
functioning.
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
• Fuse in the unit
• 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, there is a problem
with data transmission, or the
control panel is damaged.
Check the cables from the unit to the control panel.
Contact the service centre if necessary.
NOTE
Some condensing water may
have accumulated in the bottom
pool of the unit; this is normal
and requires no corrective
action.
WARNING
Water must at all times be kept
out of the electrical system.