The Aaon R41540 (543-0071-00) Comfort Alert is a diagnostics module for Copeland Scroll Compressors.  A module that is utilized to monitor changes from the compressor.

The Comfort Alert diagnostics module is a breakthrough innovation for troubleshooting and protecting three phase Copeland Scroll® compressors. The module installs easily in the electrical box of the condensing unit near the compressor contactor. By monitoring and analyzing data from the Copeland Scroll compressor and the thermostat demand, the module can accurately detect the cause of electrical and system related failures and protect the compressor. A fl ashing LED indicator communicates the ALERT code and guides the service technician more quickly and accurately to the root cause of a problem.

POWER LED (Green): indicates voltage is present at the power connection of the module.

ALERT LED (Yellow): communicates an abnormal system condition through a unique flash code. The ALERT LED will flash a number of times consecutively, pause and then repeat the process. The number of consecutive flashes, defined as the Flash Code, correlates to a particular abnormal condition. Detailed descriptions of specific ALERT Flash Codes are shown in two tables on pages 8 and 9 of this manual.

TRIP LED (Red): indicates there is a demand signal from the thermostat but no current to the compressor is detected by the module. The TRIP LED typically indicates the compressor protector is open or may indicate missing supply power to the compressor. A flashing TRIP LED indicates the anti-short cycle timer is active, preventing the compressor from starting.

Active Protection - PROT breaks 24VAC common leg of compressor contactor coil. Reset codes and PROT lockout by removing 24VAC to module.  Provides Diagnostics and Protection for Three Phase Copeland Scroll Compressors
 

LED LIGHT	DESCRIPTION
Green LED	24 VAC Power
Yellow LED Flash Code	2 System Pressure Trip                       3 Short Cycling                       4 Locked Rotor                       5 Open Circuit                       6 Missing Phase                       7 Reverse Phase                       8 Welded Contactor                       9 Low Voltage
Red LED On Solid	Protector open or no compressor power
Red LED Blinking	Anti-short cycle timer active (3 minutes)