LG MULTI V ARNU243TTD4 - Page 16

16 | ONE-WAY
MULTI V Ceiling Cassette Indoor Unit Engineering Manual
'XHWRRXUSROLF\RIFRQWLQXRXVSURGXFWLQQRYDWLRQVRPHVSHFL¿FDWLRQVPD\FKDQJHZLWKRXWQRWL¿FDWLRQ
©
/*(OHFWURQLFV86$,QF(QJOHZRRG&OLIIV1-$OOULJKWVUHVHUYHG³/*´LVDUHJLVWHUHGWUDGHPDUNRI/*&RUS
Electrical Wiring Diagram
Table 4: TU, TT Frame Wiring Diagram Legend.
ONE-WAY CEILING CASSETTE
Table 5: TU, TT Frame DIP Switch Settings.
TU and TT Frames
3ODVPD¿OWHUNLWDFFHVVRULHVDUHDYDLODEOHVHSDUDWHO\$OZD\VIROORZDOOORFDOVWDWHDQGQDWLRQDOEXLOGLQJFRGHVZLWKWKHXVHRIWKLVRUDQ\SURGXFW
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 switch-
es 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.
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 cotnroller 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