13
CAUTION:
To avoid personal injury or property
damage, make certain that the motor
leads cannot come into contact with
any uninsulated metal components
of the unit.
Check all factory wiring per the unit wiring
diagram and inspect the factory wiring connec-
tions to be sure none loosened during shipping
or installation.
Comfort Alert™ Diagnostics – faster Ser-
vice And Improved Accuracy — The Comfort
Alert diagnostics module is a breakthrough
innovation for troubleshooting heat pump and
air conditioning system failures. 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 flashing LED indicator commu-
nicates the ALERT code and guides the ser-
vice technician more quickly and accurately to
the root cause of a problem.
NOTE: 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 10)
POWER LED (Green): indicates voltage is pres-
ent at the power connection of the module.
ALERT LED (Yellow): communicates an ab-
normal system condition through a unique
flash code. The ALERT LED will flash a num-
ber of times consecutively, pause and then re-
peat the process. The number of consecutive
flashes, defined as the Flash Code, correlates
to a particular abnormal condition. Detailed de-
scriptions of specific ALERT Flash Codes are
shown in two tables.
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.
Compressor Wire Routing – The scroll com-
pressor’s run (R), common (C) and start (S)
wires are routed through the holes in the com-
fort Alert module marked “R,” “C” and “S.” the
common (C) wire need not be routed through
the module for it to operate properly.
UNIT MAINTENANCE
Thermostat Second Stage Cooling Wiring
This Comfort Alert module requires a two
stage thermostat to operate properly. The Y2
thermostat wire coming into the outdoor unit
should be connected to the Y2 input on the unit
terminal strip.
While the compressor is running, Comfort Alert
will provide power to the second stage cooling
solenoid inside the compressor after Y2 has
been energized for 5 seconds. Whenever the
compressor is not running, Comfort Alert will
figure 10. Comfort Alert Module
POWER
ALERT
TRIP
not power the solenoid, regardless of the state
of Y2. If Alert codes 1 or 9 appear while the
compressor is running, Comfort Alert will turn off
the solenoid to prevent solenoid damage from
overheating conditions.
l Terminal Wiring
The L connection is used to communicate
Alert codes to compatible White-Rodgers
thermostats. The L terminal of the thermostat
should be connected directly to the Comfort
Alert L terminal.
On select White-Rodgers thermostats, an icon
on the thermostat display will flash at the same
rate as the Comfort Alert yellow Alert LED. An
advanced option on these thermostats is to lock
out the compressor when certain Alert codes are
detected in indicating impending compressor
damage. Refer to White-Rodgers thermostat
manuals for more information.
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