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2TLC172125M0201 Rev.F
12
8
Troubleshooting
8.1
LED indications
LED indication
Probable cause
Action
Red
Device pushed/opened
Check status of the device.
Bad connection between
loops (A and/or B) and
device terminals
Check terminals and fasten them
carefully.
+24 VDC connected to
DYNlink signal input
Check if there is +24 VDC on
DYNlink signal input. If yes, check
cable connections or the unit
before.
No LED light
Loss of power supply
Check +24 VDC / 0 VDC power
supply.
Green (but no DYNlink
output detected)
Defective DYNlink signal
input to unit
Check the DYNlink input or the unit
before.
Weak lights
Unit is defective
Replace the unit.