RLE LD5000 - Manual (Page 88)

Appendix D: Troubleshooting User Guide: LD5000
80 970.484.6510 www.rletech.com
APPENDIX D: TROUBLESHOOTING
Trouble Action
Control Panel will not Power Up
1) First verify the power on switch is in the on position.
2) Check with a DVOM (multi-meter) for AC input power on the lower
right and terminal block. Voltage should between 110VAC and
120VAC. If no AC power is present at terminal block, check the circuit
(breaker) the LD5000 control panel is powered by. If voltage is
present, go to step 3.
3) Check for 24 VDC at terminal block TB1 pins 2 and 3. If no voltage is
present across these pins, the internal power supply has failed. Contact
RLE Technologies for replacement. If voltage is present and no LED’s
are illuminated, contact RLE Technologies for further troubleshooting.
Unit Powers Up without
Displaying Characters on LCD 1) Open the front door and verify that the red/black supply wires are
connected to TB1 on the display board (LCD panel).
2) Check the R2 contrast Potentiometer located on the top middle section
of the display board. The dial should be turned clockwise until
bottomed out. If the display is still not working, go to step 3.
3) Check the power on LED located to the left of the R2 contrast
Potentiometer. If the DS1 power LED is illuminated but no read out is
on the LCD, contact RLE Technologies for further support. If the DS1
power on LED Is not illuminated check for power with a DVM at TB1
pins 2 and 3. Voltage should be 24VDC +/- 3 VDC. If no voltage is
present there may be damage to the control wiring, contact RLE
Technologies for further support. If voltage is present at terminal
block, contact RLE Technologies for a replacement board.
Cable Break Alarm 1) Power down the control panel and verify that the leader cable from the
water leak detection cable run is plugged into terminal block TB2.
2) Verify that the end-of-line terminator is installed on the end of the
orange sense cable run. If present at the end of the cable run, go to step
3.
3) Remove the end-of-line terminator from the end of the cable run and
install it onto the end of the leader cable coming from the control panel.
If the condition clears, there is a damaged/faulty section of water leak
detection cable. Start moving the end-of-line terminator to the end of
each section of water leak detection cable to isolate the faulty section.
If the condition does not clear, go to step 4.
4) Power down (shut off) the control panel. Remove terminal block TB2
from the logic control board. Remove the four conductors from the
leader cable wire going into the four pin terminal block. Install a
jumper wire between pins 1 and 2 and another jumper wire between
pins 3 and 4. Reinstall the terminal block back into TB2. If the cable
break condition clears, there is a problem with the leader cable. If the
condition does not clear, contact RLE Technologies for further support.