LG LP-E5082ZA Service Manual ▷ View online
– 6 –
1.4 Functions
Indoor Unit
Power Switch ON/OFF
Operation Mode Control
Sensing the room temperature
Controlling the room temperature
Starting Current Control
Sensing Heat Exchanger Temperature
Timer Delay Safety Control
Indoor Fan Speed Control
Operation Indication lamps
Temperature Setting
Airflow Direction Control
Room temperature Display
Timer Control
Sensing Discharge Air Temperature
• Cooling, Soft Dry, Auto, Fan
¢¡
Cooling Model
• Cooling, Heating, Soft Dry, Fan
¢¡
Heat Pump Model
• Room temperature sensor (Thermistor)
• Maintains the room temperature in accordance with the setting temperature.
• Indoor fan is delayed for 3 sec at the starting.
• Heat exchanger temperature sensor (Thermistor)
• Restarting is inhibited for approx. 3 minutes.
• High, Med, Low
• Up : up to 30°C
• Down : down to 16°C
• Down : down to 16°C
• Airflow direction Automatic and Manual control
• Low, 10° ~ 35°C, Hi
• Off Timer (1, 2, 3....7 hour)
• Discharge temperature sensor <Thermistor>
• Apply Heat Pump Model Only.
• Apply Heat Pump Model Only.
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Remote Control
Operation ON/OFF
Operation Mode Selection
• Cooling, Soft Dry, Auto, Fan
¤I
Cooling Only Model
• Cooling, Heating, Soft Dry, Fan,
¤I
E/heater Heat Pump Model
Fan Speed Selection
Setting the temperature
Timer Control
Airflow Direction Control
• High, Medium, Low
• Up or Down
• Off Timer(1, 2, 3...7 hour)
• Airflow direction Auto-Swing and Manual control
Outdoor Unit
Deice Control
Outdoor Fan Speed Control
Sensing Heat Exchanger Temperature
• De-ice PCB
• One speed
• Heat exchanger temperature sensor (Thermistor)
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6.1 Installation of indoor, Outdoor Unit
1) Select the best location
¥L
Indoor unit
• There should not be any heat source or steam near
the unit.
• There should not be any obstacles to prevent the air
circulation.
• The place where air circulation in the room will be
good.
• The place where drainage can be easily obtained.
• The place where noise prevention is taken into con-
• The place where noise prevention is taken into con-
sideration.
• Do not install the unit near the door way.
• Ensure the space indicated by arrows from the wall,
• Ensure the space indicated by arrows from the wall,
ceiling, fence, or the obstacles.
¥M
Outdoor unit
• If an awning is built over the unit to prevent direct
sunlight or rain exposure, be careful that heat radia-
tion from the condenser is not restricted.
tion from the condenser is not restricted.
• There should not be any animals or plants which
could be affected by discharged hot air.
• Ensure the space indicated by arrows from the wall,
ceiling, fence, or other obstacles.
¥N
Piping length and the elevation.
6. INSTALLATION
MODEL
MAX. Piping length
A (m)
5HP
30
25
MAX.
elevation
B (m)
A
B
Indoor unit
Outdoor unit
Wall
More
than
50cm
than
50cm
More than
50cm
50cm
More than
50cm
50cm
More than
100cm
100cm
Outdoor
unit
unit
5cm
5cm
40cm
1
0
0
c
m
Indoor unit
Outdoor unit
To indoor unit
Hexagonal wrench
Service port cap
3-way valve cap
(gas side)
(gas side)
3-way valve cap
(liquid side)
(liquid side)
No leakage found
leakage found
leakage ceased
leakage ceased
leakage persists
To open 3-way(liquid side) valve again,
turn the valve stem counter-clockwise
until it stops.
turn the valve stem counter-clockwise
until it stops.
To purge the air, push the pin on the service port
of 3-way(gas side) valve for three seconds using
with a hexagonal wrench and set it free for one
minute.
of 3-way(gas side) valve for three seconds using
with a hexagonal wrench and set it free for one
minute.
• Repeat this three times.
• Re-tighten the connecting portion with
torque wrenches.
locate a repair leak
Result
5
6
6.7 Air Purging of the Piping and
Indoor Unit
1) Air purging
The air which contains moisture and remains in the
Refrigeration cycle may cause a malfunction on the
compressor.
Refrigeration cycle may cause a malfunction on the
compressor.
¤
Remove the caps from the 3-way(liquid side) and
3-way(gas side) valves.
3-way(gas side) valves.
¤Ł
Remove the service-port cap from the 3-way
(gas side) valve.
(gas side) valve.
¤Ø
To open the valve, turn the valve stem of 3-way
(liquid side) valve counter-clockwise approx. 90°
and hold it there for ten seconds, then close it.
(liquid side) valve counter-clockwise approx. 90°
and hold it there for ten seconds, then close it.
¤Œ
Check the gas-leakage of the connecting port of
the pipings.
the pipings.
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