LG LS-D1862HL Service Manual ▷ View online
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5. To open liquid side valve again,
turn the valve stem
counter-clockwise until it stops.
counter-clockwise until it stops.
• Re-tighten the connecting portion with torque wrenches.
Ieakage found
No leakage found
Outdoor unit
Cover control
Gas side
Liquid side
Cap
Hexagonal wrench
Service port cap
3-way valve
(Close)
2-way valve or
3-way valve
(Open)
leakage ceased
leakage persists
Repair
leakage ceased
6. To purge the air, push the pin on the service
port of gas side valve for three seconds with a
hexagonal wrench and set it free for one
minute. Repeat this three times.
hexagonal wrench and set it free for one
minute. Repeat this three times.
Result
7. Set the both liquid and gas side valves
to open position with the Hexagonal
wrench for the unit operation.
wrench for the unit operation.
5. Air Purging
1) Air purging
The air which contains moisture remaining in the
refrigeration cycle may cause a malfunction on the
compressor.
refrigeration cycle may cause a malfunction on the
compressor.
1. Remove the caps from the gas side and
liquid side valves.
2. Remove the service-port cap from the gas
side valve.
3. Turn the valve stem of liquid side valve
counter-clockwise approx. 90
¡
¡˘
˘
and hold it
there for ten seconds, then close it.
4. Check a gas-leakage of the connecting
portion of the pipings.
CAUTION: Do not leak the gas in the air during
air purging. Use vacuum pump as
far as possible.
far as possible.
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8. Checking a gas leakage
(1) Connect the manifold gauge to the service port of gas side valve.
Measure the pressure.
(2) Keep it for 5-10 minutes.
Ensure if the pressure indicated on the gauge is as same as that of measured at first time.
NOTE:
The additional gas for air purping has been charged in the outdoor unit.
However, if the flare connections have not been done correctly and there gas leaks, a gas cylinder and the charge
set will be needed.
set will be needed.
CAUTION : Do not leak the gas in the air during air purging. Use vacuum pump as far as possible.
Indoor unit
Liquid side
Closed
Outdoor unit
Gas side
Closed
CLOSE
CLOSE
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6. Test running
Settlement of Outdoor Unit
• Anchor the outdoor unit with a bolt and nut
(ø10cm) tightly and horizontally on a concrete or
rigid mount.
rigid mount.
• When installing on the wall, roof or rooftop,
anchor the mounting base securely with a nail or
wire assuming the influence of wind and
earthquake.
wire assuming the influence of wind and
earthquake.
• In the case when the vibration of the unit is
conveyed to the house, settle the unit with an
anti-vibration rubber.
anti-vibration rubber.
2) Evaluation of the performance
1. Measure the temperature of the intake and
discharge air.
2. Ensure the difference between the intake
temperature and the discharge one is more
than 8
¡˘
C (Cooling) or reversely (Heating).
Bolt
Tubing connection
1) Connection of power supply
1. Connect the power supply cord to the
independent power supply.
• Circuitbreaker is required.
• Circuitbreaker is required.
2. Prepare the remote control.
• Insert two batteries provided.
Remove the battery cover from the remote
controller.
controller.
• Slide the cover according to the arrow direc-
tion.
Insert the two batteries.
(Two "R03" or "AAA" dry-cell batteries or
equivalent.)
(Two "R03" or "AAA" dry-cell batteries or
equivalent.)
• Be sure that the (+) and (-) directions are
correct.
• Be sure that both batteries are new.
Re-attach the cover.
• Slide it back into position.
3. Operate the unit for fifteen minutes or more.
CAUTION:
This appliance must be installed in accordance with current National Wiring Regulations.
Connecting cable between indoor unit and outdoor unit shall be appproved and the size of conductor shall
be in accordance with local law.
Connecting cable between indoor unit and outdoor unit shall be appproved and the size of conductor shall
be in accordance with local law.
Discharge air
(Cooling)
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(1) Name and Function-Remote Control
1) Cooling Model
⁄A
Operation display
Displays the operation conditions.
⁄B
Start/Stop Button
Operation starts when this button is pressed, and
stops when the button is pressed again.
⁄C
Operation Mode Selection Button
Used to select the operation mode.
• Cooling Operation Mode
• Soft Dry Operation Mode
• Auto Operation Mode
⁄D
ON Timer Button
Used to set the time of starting operation.
⁄E
OFF Timer Button
Used to set the time of stopping operation.
⁄F
Time Setting Button
Used to adjust the time.
⁄G
Timer Set Button
Used to set the timer when the desired time is
obtained.
⁄H
Timer CANCEL Button
Used to cancel the timer operation.
⁄I
Sleep Mode Auto Button
Used to set Sleep Mode Auto Operation.
⁄J
Fan Operation Button
Used to circulate room air without cooling.
⁄K
Room Temperature Checking Button
Used to check the room temperature.
⁄L
Vertical Airflow Direction Control Button
Used to set the desired vertical airflow direction.
⁄M
Horizontal Airflow Direction Control Button
(Not on all models)
(Not on all models)
Used to set the desired horizontal airflow direction.
⁄N
Negative lon (Not on all models)
Used to generate negative ion.
⁄O
Reset Button
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Operation
Signal trasmitter
Transmits the signals
to the room air conditioner.
to the room air conditioner.
Remote Controller
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