28 - EN
EN- 29
6.6 Malfunctions (or problems) without alerts
Problem/Malfunction
Indication
Check / action
System switched off
Power supply on
The control circuit board is defective and must
be replaced
No power supply
Mains power is off
High intake temperature
in summer
Bypass remains closed
Reduce the comfort temperature
ComfoAir is still in Winter mode:
Bypass remains closed
The Mode of the ComfoAir can be checked in
menu P17. (0 = Wintermode)
■
Wait untill ComfoAir switches to
Summer mode (menu P17 = 1)
Low intake temperature
in winter
Bypass stays open
Increase the comfort temperature
Little or no air supply;
shower remains damp
Filters blocked
Replace the filters
Valves blocked
Clean the valves
Exchanger clogged by dirt
Clean the exchanger
Exchanger frozen
Defrost the exchanger
Fan dirty
Clean the fan
Ventilation ducts blocked
Clean the ventilation ducts.
ComfoAir is in frost-protection operation
Wait until the weather warms up.
Too noisy
Fan bearings defective
Replace the fan (bearings).
Fan settings too high
Change the fan settings
Slurping noise
■
U bend is empty
■
U bend does not seal properly
Reconnect the U bend
Whistling noise
■
An air gap somewhere
Seal the air gap
Airflow noise
■
Valves do not close onto duct
■
Valves not open far enough
Reinstall the valves
Reset the valves
Condensation leak
Condensation drain clogged
Unblock the condensation drain.
Condensation from exhaust duct does not run
into leakage tray
Check whether the connections are correct
Corded position switch
not working
Cabling is not correct
Check the wiring circuit of the position switch by
measuring the voltage:
■
Voltage only on N & L3:
[Fans rotate in position 1]
■
Voltage only on N & L3 & L2:
[Fans rotate in position 2]
■
Voltage only on N & L3 & L1 or
N & L3 & L2 & L1:
[Fans rotate in position 3]
Switch is defective
RFZ not working
Battery is discharged
Check the battery.
■
Replace the battery if necessary.
Switch will not connect to the unit
Make sure the ComfoSense is turned on and
menu P893 is set to “1”
Switch is not correctly tuned
Remove the power briefly from the
ComfoAir. Shortly after reconnecting
the power, tune the switch again
Содержание ComfoAir 180
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