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.
RemedyReasonLED flash frequency
Make a kill reset, reset kill switch or reset fire
alarm.
Kill impulse is activeOne 0.3 s flash, 10 s pause
etc.
Check for short circuit.+ 24 V DC external errorOne 0.3 s flash, 2 s pause etc.
Check for broken monitored sensor.Sensor monitoring error
Replace battery (normal operation with electrical
mains). If Battery Monitoring DIP is ON, then
probably a reset of this is needed (after changed
batteries), see section 5.5.5.)
Battery defectiveTwo 0.3 s flashes, pause etc.
Replace control unit.Control unit defectiveThree 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 errorFour 0.3 s flashes, pause etc.
Check for e.g. short circuit in the locking device.Locking device defectiveFive 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 secondary LED
and take necessary measures in accordance with
this table.
Secondary control unit defect-
ive (double door only)
Seven 0.3 s flashes, pause etc.
Wait for the motor to cool down.Motor overheatedEight 0.3 s flashes, pause etc.
Toggle impulse.Blocked door and constant
impulse.
Nine 0.3 s flashes, pause etc.
Check set up.
Make a new learn.
Settings have been made that
requires a new learn or the
learn has failed.
Ten 0.3 s flashes, pause etc.
Change arm setting or see the manual for OHC, if
such is installed.
Arm setting is Concealed (In-
swing) and break-out switch
is open or not connected.
Eleven 0.3 s flashes, pause etc.
1009728-en-9.0Issue 2021-02-2480
19 Troubleshooting
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