19.1
Error indication
• During normal operation the ERROR LED on the control unit is illuminated.
• An extinguished LED indicates that there is no electrical power.
• A flashing light on the LED indicates that the operator is out of function (see table below).
• An audible warning signal can be achieved by using the accessory board AIU. It is connected to
the 24 VDC and plugged into the EXU-SA relay output terminal.
Remedy
Reason
LED flash frequency
Check for short circuit or broken monitored
sensor
+ 24 V DC external error or
sensor monitoring error
One 0.3 s flash, pause etc.
Replace battery (normal operation with mains
power)
Battery defective
Two 0.3 s flashes, pause etc.
Replace control unit
Control unit defective
Three 0.3 s flashes, pause etc.
Check the encoder cable.
Open and close the door manually and thereafter
check the automatic function. If the operator is
still out of function replace the drive unit.
Encoder error
Four 0.3 s flashes, pause etc.
Check for e.g. short circuit in the locking device
Locking device defective
Five 0.3 s flashes, pause etc.
Replace locking device
Replace EXU-SI board
EXU-SI board defective
Connect the sync cable
Sync cable not connected or
defective (double door only)
Six 0.3 s flashes, pause etc.
Replace the sync cable
Check the flash frequency on the SLAVE LED and
take necessary measures in accordance with this
table.
SLAVE control unit defective
(double door only)
Seven 0.3 s flashes, pause etc.
Wait for the motor to cool down
Motor overheated
Eight 0.3 s flashes, pause etc.
Toggle impulse
Blocked door and constant
impulse
Nine 0.3 s flashes, pause etc.
1005088-EMEI-11.0
Issue 2014-11-24
72
19 Troubleshooting