Document UT-MT-0778_EN
Page 38 of 39
Edition 11/03/2014
Supersedes edition 02/03/2014
LED INSET THRESHOLD/END LIGHT L
THE04
INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
Reassembly the fixture following instructions of paragraph
“Closing the Fixture”,
“Leakage Test”
and
“Reinstalling the fixture”
.
Figure 27 - Restoring the Monitoring Device
4
TROUBLESHOOTING
Problem
Possible cause
Solution
Distorted light beam
output
Broken or damaged prism
Replace prism
Wrong prism installed
CHECK PARTS LIST AND INSTALL
THE CORRECT PRISM
Weak light output
Primary loop with partial short
circuit
Check cable assembly
Defect
in
the
isolation
transformer
Replace transformer
Dirty prism or dome
Clean the light fixture
One LED of the luminous source
damaged in short circuit (only
without the monitoring option)
Replace the LEDs board
Wrong power PCB installed
Check parts list and install the
correct PCB
Luminous source not
working
LEDS DEFECTIVE
Replace the LEDs board
POWER PCB DEFECTIVE
Replace the Power PCB
Moisture inside the fixture
Execute leakage test and replace
damaged components. Clean and
dry the inside area of the fixture
No connection of primary circuit
Check transformer output current
with A-meter
