44
T R O U B L E S H O O T I N G A N D D I S P O S A L
iV14-Zero ventilation system
•
Installation instructions
Troubleshooting and disposal
Troubleshooting
Possible cause
Remedy
Fan failure
No electrical power.
Check fuse.
Installation error.
Check wiring for correct polarity.
&KHFNDOOFRQQHFWRUVIRUFRUUHFW¿W
Check usage of wire end ferrules.
Fan defective.
Replace fan.
&RQWUROOHUSRZHUVXSSO\
defective.
5HSODFHFRQWUROOHUSRZHUVXSSO\
Fan does not
VZLWFKRႇ
Faulty controller.
Replace controller.
/RZDLUÀRZ
Inner cover closed.
Open inner cover panel.
'XVW¿OWHUSROOHQ¿OWHUKHDYLO\
soiled.
&OHDQUHSODFHGXVW¿OWHUV
5HSODFHSROOHQ¿OWHUV
0LFUR¿OWHUDFWLYDWHGFDUERQ
¿OWHULQVHUWHG
,QVHUWHGPLFURRUFDUERQ¿OWHUUHGXFHV
WKHDLUÀRZ2QO\XVH¿OWHUVIRUVSHFLDO
requirements during periods of heavy
SROOXWLRQ5HSODFH¿OWHULIKHDYLO\VRLOHG
Fans are not operating in
paired mode.
&RQQHFWWKH¿UVWIDQLQH[WUDFWDLUPRGH
and the second fan in supply air mode.
Fan speed is too low.
Increase the output level.
Thermal accumulator is soiled.
Clean the thermal accumulator.
Noises
Foreign body in the fan.
Remove foreign body from the fan. Clean
the ventilation unit.
Fan blades contaminated.
Clean fan blades.
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
DVIDUDVWKHMRLQWWDSH
Fan speed very high.
Set a lower output level on the controller.
Supply air is cold
Installation error.
Make sure, that the fan's type plate is
situated in direction of the thermal heat
accumulator.
The controller is operating in
ventilation mode.
Select heat recovery mode on the con-
troller.
