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Operating Instructions SG-EFS 104/4L
011221 v3.11-RiA
Fault indication
Possible cause
Remedy
Light-green “POWER” LED
not lit
No or incorrect supply voltage
1. Check supply voltage, compare with
type plate
2. Check terminal assignment
If supply voltage is correctly connected:
control unit is faulty
Ä
Replace control unit
The green “Channel 1”
and “Channel 2” LEDs are
not lit
Manual reset: reset button not activated
Ä
Activate reset button
Manual reset: connection to button inter-
rupted
Ä
Check connection to button
Manual reset: button jammed/sticking
Ä
Replace buttons on S1 and S2
Automatic reset: bridge missing
Ä
Connect bridge between S1 and S2
Sensor faulty or connection to sensor inter-
rupted
1. Disconnect sensor
2. Bridge connections Y11, Y12 and Y21,
Y22
3. Activate reset button
4. If LEDs are lit: replace sensor
Control unit faulty
Ä
Replace control unit
Only one green channel
LED is lit: “Channel 1” or
“Channel 2”
Incorrect supply voltage
Ä
Check supply voltage, compare with
type plate
Control unit faulty
Ä
Replace control unit
Maintenance and cleaning
Cleaning
Ä
Clean the outside of the enclosure with a dry cloth.
Maintenance and cleaning
Maintenance
The control unit is maintenance-free.
Ä
Repeat the function test monthly.
Troubleshooting and remedies
Prerequisites:
•
The signal system has passed the latest test (see sensor installation instructions).
•
The control unit is connected to the supply voltage and sensor.
•
No sensor is activated.
