
F
AULTS
C
OMFORT
A
IR
C
URTAIN
52
6.5
Remedying faults without message
If you suspect a fault but no fault message is displayed:
1. Using section
6.2
check if you can easily resolve the
problem yourself.
2. Try to resolve the problem using the below table. No tech-
nical expertise is needed for this.
P
ROBLEM
L
IKELY
CAUSE
W
HAT
TO
DO
The control panel
works normally but
the unit does not
respond.
The unit is control-
led by a signal from
an external control.
1.
Check if
or
is displayed in the control panel.
2.
Check the setting nos. 60, 61 and 76 at the installer’s
level (see section
4.5
).
The fans are dead.
1.
Check the transformer fuse.
2.
Check the wiring between the transformer and the
fans (connectors X120 and X130).
3.
Replace the transformer.
The unit does not
work, the display is
blank, and the con-
trol panel LED is not
lit.
The unit is dead.
1.
Check the power connections and wiring.
The connection
between the control
panel and the printed
circuit board is not
correct.
1.
Check the control cable.
2.
Check wiring between connector plate and printed
circuit board (connectors X380 and X390).
The printed circuit
board does not
work: the LEDs on
the printed circuit
board are not lit.
1.
Check fuse F110.
2.
Check the power supply cable (connector X110).
3.
Replace the printed circuit board.
The control panel is
defective.
1.
Check the control panel by connecting it to another
unit with another cable.
Replace the control panel if it does not work.
One fan does not
work.
The fan is dead or
defective.
1.
Check the wiring of the fan.
2.
Check the transformer fuse.
3.
Replace the fan.
The fans do not
operate at a certain
strength.
The connection to
the relevant tap is
not correct.
1.
Check the transformer connections.
2.
Check connector X130.