Energy Saver; Front Desk Control; Remote Wall Thermostat - LG MFL67646801 Owner's Manual

• REMOTE/LOCAL CONTROL
When remote/local switch #1 is on, it allow the unit to operate by the Remote Wall Thermostat.
The unit control by knobs are not available.

• ENERGY SAVER

The energy saver switch #2 is on. This switch is set at cycle fan to provide continuous fan operation in cool
or heat modes. When the switch is off the continuous fan allows continuous circulation of room air and
make the more balanced temperature of the room. When the switch is on, the fan is on or off with the
compressor or with the heater.

• FRONT DESK CONTROL

When the pair wire is connected to the connector FD2 and FD1, the unit can be turned ON or OFF with a
switch located at the Front Desk Control panel. When the front desk switch is ON, the fan operates
according to the setting without working compressor and heater. When the front desk switch is OFF, the unit
can operate according to the setting of controls.
Wire # AWG Maximum Length
#22 600 ft (180 m)
#20 900 ft (270 m)
#18 1500 ft (450 m)
#16 2000 ft (610 m)
Motion Sensor
Motion Sensor
Door Switch
Door Switch
Front Desk Control
Front Desk Control
FD2 FD1 DR2 DR1 MS2 MS1
(Molex Housing Spec 396-06V)

• REMOTE WALL THERMOSTAT

When the wires are connected, the unit will be controlled
by a remote wall thermostat.
The thermostat connections supply the 24 Volt AC. When
you install the digital/electronic thermostat, you must set it
to 24 Volt AC. See the installation Instruction in this manual
for the Remote Wall Thermostat.
24 Volt-N
24 Volt-L
Compressor
Heater
Reversing Valve
High Fan
Low Fan
GL GH O W Y R C
(Molex Housing Spec 396-07V)
Control Locations
Note: The following figures show wiring
schematics for heat pump and straight cool
units with electric heat, respectively.
Wiring Schematic for
Remote Heat Pump
Wiring Schematic for
Straight Cool Unit.
Room Air Conditioner 17