User manual
Appendix D: Testing & Maintenance Troubleshooting
54
PDRP-1002 Instruction Manual PN 51135:B0  04/06/01
Table 9 Troubleshooting Table 
 Symptom Problem Solution
AC 
Power 
LED ON
System trouble 
LED ON
Circuit trouble 
LED ON
Notification appliance circuit 
trouble
1. Check TB2 for proper connections.
2. Remove all field wiring and install dummy ELR at 
output circuit. Check for supervisory voltage across it, 
(Normal -2.3 V), if problem persists, replace circuit 
board.
3. Removed dummy ELR, reconnect field wiring and 
measure voltage across output; (trouble-5V, short 0V).
4. Check for ELR at last device.
5. Check field wiring.
Any of the right 
column yellow 
LEDs flashing
Initiating zone open circuit 
trouble
1. Check TB4 for proper connections.
2. Remove field wiring for zone in trouble and install 
dummy ELR (4.7K).  If problem persists, replace 
circuit board.
3. Check for ELR at last device.
4. Check field wiring.
Any of the right 
column yellow 
LEDs steady 
ON
Zone disable
1. Check installation manual.
Power trouble 
LED ON
Battery trouble
Batt yellow 
LED ON
Missing or 
Disconnected
1. Check battery connections.
Low or 
damaged 
battery
1. Remove batteries, check voltage across charger 
output (17 to 19V), otherwise replace circuit board.
2. Reconnect batteries, measure battery voltage at 
battery terminals. If voltage is less than 85% of rated 
voltage, allow them to charge for 48 hours.
3. If problem persists, replace batteries.
Ground fault trouble
Earth yellow LED ON
1. Remove field wiring from main panel and optional 
module(s) (if installed). Install dummy ELR (4.7K).
2. Remove both battery leads.
3. If trouble clears, connect one circuit at the time to 
pin point the problem.
4. If trouble doesn’t clear, replace circuit board.
Yellow LED on 
4XTM ON
4XTM
1. Move Municipal Box disconnect switch SW1 up.
OPT1, OPT2 jumper cut
1. Install optional module(s) or replace jumper if 
module(s) is not used.
Municipal Box open circuit
1. Install dummy load if Municipal Box option isn’t 
used.
2. Check Municipal Box wiring.
Any of the right column red LEDs 
ON
Short on initiating circuit wiring
1. Remove field wiring and install ELR. If trouble 
clears, look for faulty or incorrectly wired devices.
Disconnecting Municipal Box 
switch ON 4XTM does not create 
a trouble
Jumper for optional modules 
isn’t cut
1. Cut associated jumper OPT1 or OPT2.
4XZM: associated LED doesn’t 
activate for alarm, trouble or 
supervisory conditions
Optional module trouble
1. Make sure module is properly installed.
2. Move disable switch SW1 on 4XZM to the left.
RZA-4X piezo doesn’t sound for 
alarm, trouble or supervisory 
conditions
4XLM
1. Make sure that 4XLM module is installed on J8.
2. Check field wiring.
Micro Fail yellow LED ON Microprocessor damaged
1. Replace circuit board.
All RZA-4X LEDs stay ON
Power wasn’t removed prior to 
installation
1. Press system reset.
AC 
Power 
LED OFF
System trouble LED ON
Loss of main power
1. Check incoming power (TB5).
Damaged circuit breaker
1. Replace circuit board.
Micro Fail yellow LED ON Microprocessor damaged
1. Replace circuit board.










