Page 29
INSTALLATION GUIDE - REMOTE ACCESS CONTROLLER RAC 4XT • PK3191_10_14
The following sections show basic troubleshooting for some common problems that may occur 
during installation. Each section relates to a specific type of problem, namely:
•  Power Troubleshooting
•  Card Reading Troubleshooting
•  External Inputs Troubleshooting
•  Locking Device Troubleshooting
•  Relay Expansion Board Troubleshooting
•  Programming and Auditing Troubleshooting
For detailed assistance, please contact Technical Support as indicated at the start of this  
manual.
1. Power Troubleshooting 
6.0 Annex D Quick Troubleshooting Guide
Symptom Action
Power adaptor LED is OFF  -  Verify that the AC supply is not turned off.
-  Verify that the adaptor output is not shorted.
Power supply AC ON green LED is OFF -  Verify that the wiring to the power wall-mount 
adaptor is correct.
-  If using the 24 VDC international adaptor, verify that 
the polarity is correct.
Power supply DC ON red LED is OFF -  Verify the wiring between the power supply and 
the RAC 4XT controller.
-  Verify that the power supply output is not shorted.
RAC 4XT enclosure’s panel door “Power 
Status” LED is OFF
-  Verify that the power supply is powered (both AC 
ON and DC ON LEDs are on).
-  Verify the LED wiring to the power supply.
RAC 4XT enclosure’s panel door “Battery 
Status” LED is OFF
-  Verify the wiring polarity to the battery. If correct, 
the battery may be discharged. After charging for 
a few hour, the Battery Status LED should turn 
green. Full charge may take up to 12 hours.
-  If the Battery Status LED is still OFF after 12 hours, 
the battery may need to be replaced.
All RAC 4XT LEDs are OFF -  Verify that the DC ON LED on the power supply is 
on.
-  Verify that the AC power is active for the wall mount 
power adaptor.
-  Verify that the RAC 4XT controller is connected 
properly to the power supply as per Annex A, Table 
7.
-  If qualified, with a multi-meter verify that 24 VAC 
(North American power adaptor) or 24 VDC 
(international power adaptor) is present across 
power supply terminal block XFMR_1 and XFMR_2 
as per Annex A, Table 5..