Start Up With Assistant; Appendix A - Vfd Operation With Remote Keypad - Carrier WeatherExpert 48LC 04 Series Installation Instructions Manual

All 48LC size 04-06 units are equipped with a VFD (Variable
Frequency Drive) to automatically adjust the indoor-fan motor
speed in sequence with the unit's ventilation, cooling and heat-
ing operation. The VFD keypad is included as standard on
electromechanical and RTU Open models. See Fig. B for loca-
tion of the VFD and the VFD keypad in these units.
NOTE: SystemVu™ models do not include the VFD keypad as
VFD control operation is accessed through the SystemVu™
controls.
The VFD keypad is shown in Fig. A. The function of SOFT
KEYS 1 and 2 change depending on what is displayed on the
screen. The function of SOFT KEY 1 matches the word in the
lower left-hand box on the display screen. The function of
SOFT KEY 2 matches the word in the lower right-hand box on
the display screen. If the box is empty, then the SOFT KEY
does not have a function on that specific screen. The UP and
DOWN keys are used to navigate through the menus. The OFF
key is used to turn off the VFD. The AUTO key is used to
change control of the drive to automatic control. The HAND
key is used to change control of the drive to local (hand held)
control. The HELP button is used to access the help screens.
For the VFD to operate on the units covered by this document,
the drive must be set in AUTO mode. The word "AUTO" will
appear in the upper left hand corner of the VFD display. Press
the AUTO button to set the drive in AUTO mode.
APPENDIX A — VFD OPERATION WITH REMOTE KEYPAD
Fig. A — VFD Keypad
Use the RJ-45 (CAT5) cable (bundled with the Control Harness
- see Fig. B) to provide easier access for using the VFD Re-
mote Keypad. The cable's length is long enough to route it
through to the unit's control box, if desired.
To Connect the VFD Keypad using the RJ-45 Cable
1. Remove the Keypad from the front of the VFD.
2. Remove the RJ-45 adapter from the back of the Remote
Keypad and insert the adapter into the RJ-45 port on the
front of the VFD.
3. Separate the RJ-45 (CAT5) cable from the Control Harness.
4. Use the CAT5 cable to connect the Remote Keypad to the
VFD.

START UP WITH ASSISTANT

Initial start-up has been performed at the factory. Use of the
start up assistant will override factory VFD configurations. DO
NOT USE THE START-UP ASSISTANT ON THESE LC
UNITS!
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