Zehnder Group ComfoAir 550 Luxe, Руководство пользователя

Страница: 37 / 48

3
For the installer - 33 - EN
3.10.3 Malfunctions (or problems) without alerts
An overview of the malfunctions (or problems) without notifi cations is given below.
Problem/Malfunc-
tion
Indication Check / action
System switched off Power supply on Check the fuse on the
PCB panel.
• If the fuse is OK, the control PCB is
defective.
No power supply Mains power is off.
High intake temper-
ature in summer
Bypass remains closed
Reduce
the comfort temperature.
Low intake tempera-
ture in winter
Bypass stays open Increase the comfort temperature.
Little or no
air supply;
shower remains
damp
Filters blocked Replace the fi lters.
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 opera-
tion
Too noisy Fan bearings defective Replace the fan bearings.
Fan settings Change the fan settings.
Slurping noise
• Siphon is empty
• Siphon does not seal properly Reconnect the siphon.
Whistling noise
• An air gap somewhere Seal the air gap.
Airfl ow 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 3-position
switch not working
Cabling is not correct Check the wire-circuit of the
3-position switch by
measuring the voltage:
Switch is defective
Wireless 3-position
switch not working
Battery is discharged Check the battery.
• Replace the battery (if necessary).