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Connection Name Location Function
CN-POWER AC power supply AC Power line
CN-MOTOR1 Fan motor output Motor output of BLDC
CN_OUT Heater Connection for heater
CN-D/PUMP Drain pump output AC output for drain pump
CN-FLOAT Float switch input Float switch sensing
CN-ZONE Zone controller Zone controller connection
CN-OPTION Optional PCB EPROM Option PCB connection
CN-EXT External ON / OFF controller External ON / OFF controller connection
CN-DISPLAY Display Display of indoor status
CN-CC Dry contact Dry Contact connection
CN-PIPE/OUT (RD) Discharge pipe sensor Pipe out thermistor
CN-LEAK (VI) Refrigerant leak detector Refrigerant leak detector connection
CN-PIPE/IN (WH) Suction pipe sensor Pipe in thermistor
CN-REMO (GN) Wired remote controller Wired remote control connection
CN-ROOM (YL) Room sensor Room air thermistor
CN-DAMPER Damper Controller Damper connection
CN-AIRC Air Cleaner Air Cleaner connection
CN-WF Wifi Wifi Module connection
CN-PTC Auxiliary Heater Auxiliary Heater
Table 108: Wiring Diagram Connections.
Table 109: DIP Switch Settings.
DIP Switch Settings OFF ON Description
SW1 Communication Off (default) — —
SW2 CYCLE Off (default) — —
SW3 GROUP Master Slave Group control setting using wired remote controller.
SW4
DRY
CONTACT
Variable Auto
Dry contact mode setting.
1. Variable: Auto/manual mode can be chosen using the wide wired
remote controller or wireless remote controller (factory setting is
the manual mode).
2. Auto: For dry contact, it is always auto mode.
SW5 EXTRA1 Off On
• ON: Fan operates continuously.
• OFF: Default (Fan does not operate continuously).
SW6 HEATER Off On
• ON: Automatic heater operation.
• OFF: Default (manual heater operation).
SW7 Off
SW8 Off
To operate the indoor unit without Internal Electric Heater , Dip switch 1, 2, 6, 8 must be set OFF .
To operate the indoor unit with Internal Electric heater , Dip switch 6 must be set ON.
• SW6 ON: Automatic Heater operation: Heater operates automatically.
• SW6 OFF: Manual Heater operation: Owner ’s involvement is required for on/off operation.
If you operate the indoor unit with Internal Electric heater with Dip switch 5, note the following:
• SW5 ON: Fan operates continuously. During defrosting or oil return operation, uninterrupted heating can be attained, as a result of
continuous heater and fan operation.
• SW5 OFF: Fan discontinuous operation. There would be a reduction in heating capacity while defrosting or oil return operation.
Wiring Diagram
FOUR-WAY VAHU INDOOR UNITS
Due to our policy of continuous product innovation, some specications may change without notication.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
194 | VERTICAL-HORIZONTAL
Multi F and Multi F MAX Indoor Unit Engineering Manual
MULTI
F
MAX
MULTI
F
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