19 - EN
2.10.3 What to do in the event of a malfunction / Trouble shooting
Below are a number of trouble-shooting tips for the malfunction alerts described previously which can appear on
the digital operating device in the event of a malfunction.
A1 /
A2 / A3 / A4
NTC sensor
T1 / T2 / T3 / T4
is defective
Remove the handles
from the ComfoAir.
Remove the filters from
the ComfoAir.
Slide the front panel
upwards and remove
the front panel from
the ComfoAir.
Release the cover panel
by unscrewing the
screws.
Remove the screw from
the electronics carriage
and pull the electronics
carriage carefully
forwards.
Remove the cover
panel.
Reconnect the NTC
sensor.
Reconnect the
power to
the ComfoAir.
Yes
No
Yes
No
Replace the
NTC sensor.
Replace the
control circuit
board
.
Yes
No
Was the
temperatuur
< -27
ºC or
> 127ºC?
Reset the unit
(P74 on 1)
Disconnect the
power from
the ComfoAir.
Disconnect the
power from
the ComfoAir.
Disconnect the
power from
the ComfoAir.
Release the front panel
by unscrewing the
screws.
Are the
connections
at the ComfoAir
correct?
Is the
resistance of
the NTC sensor
correct?
5HVLVWDQFH>.@
MIN.
MID.
MAX.
Temperature
>&@
Resistance tabel for
(NTC) temperature sensors:
Содержание ComfoAir 550
Страница 1: ...ComfoAir 550 Manuale installatore Installationsanleitung Installer manual...
Страница 99: ...31 EN...