Add Routine; Recover Routine - Trane ACONT900AC43UA Service Manual

ADD Routine

If the CA control determines refrigerant is required,
the ADD Amber LED will turn ON and the Green
CHARGED LED will begin FLASHING (Figure 13)
according to the CHARGED Green LED flash Rate
Schedule. (See Figure 11 for flash rate details.)
Figure 13
ON
NOTE: For Automated charging, use BAYCAKT001AA.
When utilizing a Charging accessory Solenoid Kit (BAY-
CAKT001) (Figure 14) refer to the instructions in the kit (18-
HH15D1-*) for proper hook up. When the Amber ADD LED is
ON the CA control board provides a 24 VAC power for the
accessory solenoid. The CA control will turn off the 24 VAC
power when the Amber ADD LED goes off.
Figure 14
When refrigerant is being added, the CA control will
exit the Charge Assist™ cycle if the liquid line pressure
does not increase by 4 psi in 50 minutes or if the
liquid line pressure does not get within the 20 psi
of the required charged pressure within 1 hour.
If the CA control determines there is excessive
refrigerant in the system, the REC Red LED will be
turned ON (Figure 15).
Figure 15
FLASH
The CA control will lock the system off for one hour
and it will then exit the CA cycle. The REC Red LED
will stay ON for 1 hour. The CA control lock out period
can be stopped by pressing the MODE button for 2
seconds. Status LED will be off during lockout.
Charge Assist™
Note: For Manual Charging
Once sufficient charge has been added, the Amber ADD
LED will turn OFF and the Green CHARGED LED will be
turned ON. When the Amber ADD LED turns OFF; stop
adding refrigerant. The Green CHARGED LED will stay
on for 5 minutes while the unit runs. The CA control will
now exit the Charge Assist™ cycle and returns control to
the Communicating Comfort Control.

RECOVER Routine

NOTE: Personality Module (PM) contains model
specific information needed for system operation - Do
Not Remove.
NOTE: The word 'Wait' will be displayed on the
Communicating Comfort Control when the system is in
the CA mode. The Communicating Comfort Control does
not control the system operation when the system is
running in the CA Mode. Any changes in the
Communicating Comfort Control programming made
during the CA mode of operation will become effective
after the CA mode ends.
ON
CA - A 7