CA - A 5
Charge Assist™
Parameters for using Charge Assist
TM
Outdoor Temperature (ODT):
Must be between 55°F and 120°F for R-410A systems
(between 65°F and 100°F for R-22 systems) . If ODT
is outside of this range, the ODT, OUT OF RANGE,
Red LED will flash ON and OFF for 30 seconds. This
error condition causes the CHARGING (STABILIZING)
Amber LED to flash 10 times. The CA control will
then exit the CA mode and the Green Status LED
begins to flash slowly.
Liquid Line Temperature:
(Must be within range) If this sensor is shorted or open,
This error condition causes an 11 flash on FAULT LED.
Liquid Line Pressure:
Must be above 90 psig for R-410A systems (50 psig
for R-22 systems). If the liquid pressure falls below
the minimum, the LOW PRESSURE Red LED will
turn on for 30 seconds. This error condition causes
the CA control to flash its CHARGING (STABILIZING)
Amber LED 10 times. The CA control will then exit
the CA mode and it then begins flashing its Green
Status LED slowly.
Charge Assist
TM
System Initialization
Using Charge Assist
TM
Step 1
Press MODE button (See Figure 8) for 2 seconds to
enter the CA mode. The CA control takes control of
the system and overrides the Communicating Comfort
Control. The Green STATUS LED is turned OFF. The
CA control will run the first stage compressor for one
minute. Green LED Y1 is on.
Figure 7
ON
OFF
ON
The Communicating Comfort Control will auto-config-
ure the system size and airflow requirement at power-
up. The Charge Assist™ (CA) Mode will set the in-
door blower to 100%, override any blower delays and
run compressor 2nd stage. (Green LEDs Y1 and Y2
will be on. The Green Status LED will be turned off.)
(Figure 7)
Figure 8
The CA control will then run the second stage
compressor. Green LEDs Y1 and Y2 will then be ON
(Figure 9). The CA control now starts its Charge
Assist™ mode. The CA control will now check the
operating Conditions before continuing the CA Mode.
ON
OFF
ON
NOTE: To stop the CA mode at anytime, press the MODE
button. The CA control will then begin slowly flashing its
Green STATUS LED indicating that the CA control is now
in its normal operating mode.
Figure 9
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