LG LM-2162H2N Service Manual ▷ View online
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1) Checking the Drainage
1. Remove the Grille from the cabinet
• Set the up-and-down air direction louver to
open position(horizontally) by finger pressure.
• Remove the securing screws.
• To remove the Grille, pull lower the left and
right side of the grille toward you (slightly tilted)
and lift it straight upward.
and lift it straight upward.
2. Check the drainage
• Pour a glass of water on the evaporator.
• Ensure if water flows drain hose of indoor unit
without any leakage.
(4) Checking the Drainage and Pipe forming
Pull the right and the left side.
Screw
Evaporator
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2) Connect the cable to the indoor unit
1. Connect the wires to the terminals on the
control board individually according to the
outdoor unit connection.
outdoor unit connection.
• Ensure that the color of the wires of outdoor
unit and the terminal No. are the same as
those of indoor unit respectively.
those of indoor unit respectively.
Connecting cable
2. Attach the Grille onto the cabinet.
• Grasp lower the left and right side of the
Grille and engage four tabs on the top inside
edge of the chassis.
edge of the chassis.
• Press the Grille toward the chassis until it will
be back into place.
1(L)
2(N)
1(L)
2(N)
3
3
1(L)
2(N)
3
3
2(N)
2(N)
1(L)
1(L)
Terminals on the OUTDOOR UNIT
Terminals on the INDOOR UNIT
Power cord
Terminals on the INDOOR UNIT
A-UNIT
B-UNIT
1(L)
1(L)
2(N)
2(N)
1(L)
2(N)
3
3
3
3
1(L)
2(N)
3
1(L)
2(N)
3
2(N)
1(L)
Terminals on the OUTDOOR UNIT
Terminals on the INDOOR UNIT
Terminals on the INDOOR UNIT
Terminals on the INDOOR UNIT
A-UNIT
B-UNIT
C-UNIT
Power cord
Taping
Drain hose
Pipings
Connecting
cable
cable
Plastic band
• Trap is required to prevent water from
entering into electrical parts.
entering into electrical parts.
Power cord
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3) Form the pipings
1. Wrap the connecting portion of indoor unit
with the Insulation material and secure it with
two Plastic Bands(for the right pipings).
two Plastic Bands(for the right pipings).
• If you want to connect an additional drain hose,
the end of the drain-outlet should keep distance
from the ground.(Do not dip it into water, and fix
it on the wall to avoid swinging in the wind.)
from the ground.(Do not dip it into water, and fix
it on the wall to avoid swinging in the wind.)
2. Tape the Pipings, drain hose and Connecting
Cable from down to up.
3. Form the pipings gathered by taping along the
exterior wall and fix it onto the wall by saddle
or equivalent.
or equivalent.
1. Tape the Pipings and Connectiong cable from
down to up.
2. Form the pipings gathered by taping along the
exterior wall and the Trap to be required to
prevent the room from entering the water.
prevent the room from entering the water.
3. Fix the pipings onto the wall by saddle or
equivalent.
In case of the Outdoor unit is installed bellow
position of the Indoor unit.
position of the Indoor unit.
In case of the Outdoor unit is installed upper
position of the Indoor unit.
position of the Indoor unit.
Seal a small opening
around the pipings
with gum type sealer.
around the pipings
with gum type sealer.
Trap
Trap
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(5) Air Purging of the Pipings and indoor unit
The air which contains moisture remaining in the is refrigeration cycle may cause a malfunction on the
compressor.
compressor.
1. Confirm that both the liquid side valve and the gas side valve are set to the closed position.
2. After connecting the piping, check the joints for gas leakage with gas leak detector.
3. Remove the service port nut, and connect the gauge manifold and the vacuum pump to the service port
by the charge hose.
4. Vacuum the indoor unit and the connecting pipes until the pressure in them lowers to below-76cmHg.
5. Disconnect the charge hose and fit the nut to the service port.
(Tightening torque: 1.8kg.m)
6. Remove the valve stem nuts, and fully open the stems of the 2-way and 3-way valves with a hexagon
wrench.
7. Tighten the valve stem nuts of the 2-way valve and 3-way valve.
Indoor unit
Outdoor unit
Liquid side
Gas side
CLOSE
OPEN
Vacuum pump
2-way
valve
Closed
Closed
3-way
valve
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