LG MULTI V ARNU243TTD4 - Page 57

57
Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
2QH:D\7778)UDPHV
WIRING
Table 15: TU, TT Frame Wiring Diagram Legend.
Table 16: TU, TT Frame DIP Switch Settings
Terminal Purpose Function
CN_MOTOR1 Fan motor output Motor output of BLDC
CN_WF Wi-Fi module Wi-Fi module connection
CN-PTC Auxiliary heater Auxiliary heater connection
CN_DUST N/A N/A
CN_FLOAT Float switch input Float switch sensing
CN_EEV EEV output EEV control output
CN_DISPLAY Display Display of indoor status
CN_OPTION Option PCB (EEPROM) Option PCB connection
CN_ROOM Room sensor Room air thermistor
CN_PIPE_IN Suction pipe sensor Pipe in thermistor
CN_HUMID N/A N/A
CN_LEAK Leak sensor Leak sensor connection
CN_PIPE_OUT Discharge pipe sensor Pipe out thermistor
CN_EXT External on/off controller External on/off controller connection
CN_REMO Remote controller Remote control connection
CN_CC Dry Contact Connection to Dry Contact (Optional)
CN_AIRC* Air cleaner Air cleaner control
CN_VANE2 Step Motor Step motor output
CN_VANE1 Step Motor Step motor output
CN_DCDRAIN Drain pump output AC output for drain pump
CN_485 Communication Connection between indoor and outdoor units
CN_COMM Communication Connection on Sub PCB between indoor and outdoor units
CN_POWER AC Power supply AC power line input for indoor controller
DIP Switch Setting Off On Remarks
SW3 GROUP CONTROL Master Slave
Group control setting using 7-Day Programmable Controller; selects
Master/ Slave on each indoor unit
SW4
DRY CONTACT
MODE
Variable Auto
Sets operation mode for optional Dry Contact accessory
1. Variable: Auto or Manual Mode can be set through 7-Day
Programmable Controller or Wireless Remote Controller
(factory default setting is Auto if there is no setting)
2. Auto: For Dry Contact, it is always Auto mode
*For Gen 4 Multi V one-way ceiling cassette indoor units, DIP switches 1, 2, 5 through 8 must be set to OFF. These DIP
switches are used for other models.
**To enable Generation 4 features, outdoor unit DIP switch no. 3 must be set to ON. Please refer to the Multi V 5, Multi V IV,
Multi V Water IV, Multi V S Engineering Manual for additional information.
*If a Third-Party Dry Contact and an LG internal heater or an LG Auxiliary Heater Kit is installed, supplemental heat capability cannot be controlled by the Third-Party Thermostat.