Diagnostics – Faster Service And Improved Accuracy
The Comfort Alert diagnostics module is a breakthrough innovation for troubleshooting
heat pump and air conditioning system failures. The module installs easily in the electrical
box of the outdoor 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 without any
sensors. 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.
This module does not provide safety protection! The Comfort Alert module
is a monitoring device and cannot shut down the compressor directly.
LED Description (Figure 1)
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 fl ash code. The ALERT LED
will fl ash a number of times consecutively, pause and then
repeat the process. The number of consecutive fl ashes,
defi ned 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
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.
Operating Temperature: -40° to 150° F (-40° to 65° C)
Storage Temperature: -40° to 175° F (-40° to 80° C)
Power Supply Range: 18-30VAC, 48-62 Hz
Power Requirement: 1.5 VA nominal (without solenoid on)
6.0VA nominal (with solenoid on)
UL Restrictions: Use only with Class 2 circuits.
This Comfort Alert module is designed only for single-phase systems with Copeland
scroll compressors that have internal overload protection.
The software in this Comfort
Alert module has been optimized for two stage UltraTech™ scroll systems.
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