Zehnder Rittling ComfoAir 350, Инструкция по эксплуатации

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3
25 System functions
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 sup-
ply; 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.
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 good
Check
the wire-circuit of the
3-position switch by
measuring the voltage:
• Voltage only on N & L3:SFlb[Fans ro-
tate in position 1].
• Voltage only on N & L3 & L2:SFlb[Fans
rotate in position 2].
• Voltage only on N & L3 & L1 or
N & L3 & L2 & L1:SFlb[Fans rotate in
position 3].
Switch is defective
Wireless 3-position
switch not working Battery is discharged Check
the battery.
•
Replace
the battery (if necessary).