41
TROUBLESHOOTING AND DISPOSAL
41
iV-Smart+ ventilation unit | Installation instructions
7
Troubleshooting and disposal
Troubleshooting
Fault
Possible cause
Remedy
Fan failure
No electrical power.
Check fuse.
Installation error.
Check wiring for correct polarity.
Check all connectors for correct fit.
Check the use of wire ferrules.
Fan defective.
Replace fan.
Controller/power supply
defective.
Switching controller/power supply.
Fan does not
switch off.
Faulty controller.
Replace controller.
Low flow rate
Panel closed.
Open panel.
Fans are not operating in
paired mode.
Connect the first fan in extract air mode
and the second fan in supply air mode.
The rotational speed of the
fan is too low.
Increase the output level.
Noises
Foreign body in the fan.
Remove foreign body from the fan.
Clean the ventilation unit.
Thermal accumulator is not
correctly positioned in the wall
sleeve.
Slide the thermal accumulator out of the
wall sleeve. Insert it again.
Slide the thermal accumulator into the
wall sleeve as far as the end-stop tape.
The rotational speed of the
fan is very high.
Set a lower output level on the
controller.
Supply air is cold
Installation error.
Make sure that the unit label on the
Xenion fan is directed towards the
thermal accumulator.
Check the connector plug on the control-
ler. The connector plug must be
sitting firmly in the connector housing.
The controller is operating in
ventilation mode.
Select heat recovery mode on the
controller.
