4
NOTE:
On the
Charge Assist™ control
set the LINE LENGTH
DIP SWITCHES before running system or entering
CA Mode.
See Subcool Charging Corrections Table on page 2.
The Communicating Comfort Control will auto-configure the
system size and airflow requirement at power-up. The Charge
Assist™ (CA) Mode will set the indoor blower to 100%, over-
ride any blower delays and run compressor 2nd stage. (Green
LEDs
Y1
and
Y2
will be on. The Green
Status
LED will be
turned off.)
Procedure
STEP 1:
Press
MODE
button (See Figure 2) 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. The CA control will then run the second stage
compressor. Green LEDs Y1 and Y2 will then be ON. The
CA
control now starts its Charge Assist™ mode. The
CA
control will now check the operating Conditions before
continuing the
CA
Mode.
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.
Outdoor Temperature
(
ODT
) Must be between 55°F and
120°F. If
ODT
is below 55°F or above 120°F, 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) If the liquid
pressure is below 90 psig, 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.
STEP 2:
Enter Stabilization Routine
The
CHARGING
(STABILIZ-
ING)
Amber LED
will begin to flash.
The
CA
control will then indicate the time it will take for the
refrigerant system to stabilize by flashing its
CHARGING
(STABILIZING)
Amber LED.
(See SUMMARY on page 7
for flash rate details.)
The
CA
control may run the system for up to twenty min-
utes to insure the refrigerant system is at a steady operat-
ing state. Once the system is at a steady operating state
the
CA
control will enter the
Charging Routine.
STEP 3:
Charge Assist™ (CA) Procedure with a Communicating Comfort Control
CONTAINS REFRIGERANT!
SYSTEM CONTAINS OIL AND REFRIGERANT UNDER
HIGH PRESSURE. RECOVER REFRIGERANT TO RELIEVE
PRESSURE BEFORE OPENING SYSTEM.
Failure to follow proper procedures can result in personal
illness or injury or severe equipment damage.
CAUTION
!
WARNING
!
Live Electrical Components!
During installation, testing, servicing and troubleshooting of
this product, it may be necessary to work with live electrical
components. Failure to follow all electrical safety precautions
when exposed to live electrical components could result in
death or serious injury.
2
CHARGE ASSIST
TM
CIRCUIT BOARD DETAIL
1
CHARGE ASSIST
TM
PORT LOCATION
LIQUID
REFRIGERANT
