VELUX
®
23
J1
6
5
4
3
2
1
3
2
1
3
2
1
2
1
1
3
2
+ –
2
1
3
2
1
3
2
1
3
2
5
4
1
LINK
FACU
BATTERY
DET.
2
1
DET.
2
1
N
L
N
L
PE
N
L
230V
230V
ERROR-MOTOR 1
ERROR-MOTOR 2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP. FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SE
TUP
RESET
73˚ C
TEMP. FUSE
TIME
AU
TO
CL
OSE
TIME
OPENNIG
CO
MFOR
T
FRONT P
ANEL
BREAK GLASS POINT
RAIN
RAIN IN
COMFORT
SMOKE
RAIN OUT
ERROR
ALARM
FUSE: 25A
MOTOR 2
MOTOR 1
230V/50Hz
+
–
24V
24V
1
ON
2 3 4 5 6
OPERATION
The printed circuit board monitors the present status of the control
system.
Normal operation condition of the control unit is indicated with a green
light-emitting diode.
PSU1 OK
The printed circuit board monitors the present status of the power
supply for motor terminal 1 (used in control units KFC 210 and KFC 220).
The light-emitting diode indicates that the motor terminal is being
supplied with power from the integrated power supply.
If the 230 V mains supply to the control unit is interrupted, the printed
circuit board automatically switches to battery supply and the diode is
turned off.
PSU2 OK
The printed circuit board monitors the present status of the power
supply for motor terminal 2 (used in control units KFC 220 only).
The light-emitting diode indicates that the motor terminal is being
supplied with power from the integrated power supply.
If the 230 V mains supply to the control unit is interrupted, the printed
circuit board automatically switches to battery supply and the diode is
turned off.
RAIN SENSOR - INPUT
The printed circuit board monitors the present status of the rain sensor.
If the connected rain sensor detects rain, the yellow light-emitting diode
is on and any window opened for comfort ventilation closes. When the
rain has stopped, the yellow light-emitting diode is turned off and the
window can be opened for comfort ventilation again after two minutes.
MAINTENANCE
The printed circuit board monitors the time between inspection periods.
If more than 15 months have passed since the last inspection, the yel-
low light-emitting diode is on and an acoustic alarm sounds. During the
inspection, the system is reset by pressing the button at the right
for at least 5 seconds. After this, 15 months will pass before the light-
emitting diode comes on again, if the service time is exceeded. Exceeded
service intervals are also error indicated with a yellow light-emitting
diode in the integrated break-glass point and possible additional break-
glass points and an acoustic alarm.
Status and error indication
in control system
