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Service Manual - Page 2
Contents
Details of 2003 LG Model Name 3 Functions ...4 Product References ...6 Dimensions ...7 Refrigeration Cycle Diagram 9 Wiring Diagram...10 Operation Details ...11 Display Function ...17 Self-diagnosis Function...17 Installation ...18 Operation ...33 Disassembly of the parts (Indoor Unit 33 2-way, 3-way Valve...35 Cycle Troubleshooting Guide 42 Electronic Control Device...52 Schematic ...
Service Manual - Page 3
...
A~Z
Name of tool of Air conditioner
A~Z
S: Split Type Air conditioner
Cooling/Heating
A~Z
C: C/O, H: H/P, X: C/O + E/H, Z: H/P + E/H
Capacity(Btu/h)
1~9
Cooling/Heating Capacity
Ex. Details of 2003 LG Model Name
12
- 3 4 5 6 7 8 9 10
Code 1 2 3 4,5 6
7 8 9
Type
Code of Model
Meaning
Producing Center/
A~Z
Refrigerant
L: ChangWon R22, A: ChangWon R410A, C: ChangWon R407C...
Service Manual - Page 4
.... Natural Air Control by Remote controller
Sensing the Room Temperature • Room temperature sensor. (THERMISTOR) Room temperature control • Maintains the room temperature in accordance with the Setting Temp. Defrost(Deice) control...Mode
: Lights up during Defrost Mode or
Hot Start operation.(Heat pump model only)
OUT DOOR
Outdoor unit operation : Lights up during defrosting. ...
Service Manual - Page 5
Remote Control
Operation ON/OFF
Operation Mode Selection
(Cooling (Heating model only) model only)
Cooling Operation Mode.( ) Healthy Dehumidification Operation Mode.(
Fan Speed Selection
Auto Operation Mode.( ) ) Heating Operation Mode.( )
(Low)
(Med)
Room, Temperature Checking
: (Low:11°C
High:39°C)
Temperature Setting
TEMPERATURE LOW
HIGH
Cooling
JET COOL
Down to 18&#...
Service Manual - Page 6
...Remocon Type
Setting Temperature Range, Cooling Mode
Temperature Increment
Auto Operation(electronic control)
Self Diagnosis
Timer
Sleep Operation
Healthy Dehumidification Mode
Restart Delay
minutes
Refrigerant(R-22)... 30.3*21.3*9.6 7(15.4) 33(72.8)
LSC121PMA 1, 115, 60 12,000 1,290 11.7 58 9.3 8.8(330) 1.4(3) 43 37 34 46 Thermistor 4-way 3/4 Auto Manual
Wireless LCD 64~86°F 2°F...
Service Manual - Page 11
.... MAIN UNIT FUNCTION
• DISPLAY
1) C/O Model
Operation Indicator • ON while in appliance operation, OFF while in appliance pause. • Flashing while in disconnection or short in Thermistor. (3 sec off / 0.5 sec on )
Sleep Timer Indicator • ON while in compressor running , operating with the airflow speed set by the remote control is received, the intake...
Service Manual - Page 13
...176;C
• At the beginning of Fuzzy mode operation, the setting temperature is turned off. s Fuzzy Operation (C/O Model)
• According to the
intake air temp at that time....Air Temp
Intake Air Temp When 0.5°C or more below the setting
temp, the compressor is automatically selected according to the temperature set by Fuzzy rule, when the intake air temp is 0.5°C or more...
Service Manual - Page 15
... Mode >
CLOSED
OPEN
OPEN
s Jet Cool Mode Operation (C/O Model)
• If the Jet Cool key is input at any operation mode while in appliance operation, the Jet Cool mode operates. • In the ...closed at the time set by the timer, the pause continues. s Off-Timer Operation
• When the set time is reached after the time is input by the remote control, the appliance stops operating. &#...
Service Manual - Page 16
... Model)
• While in 7 min.
s Auto restart
• In case the power comes on the
forced operation position, the error ...sound "beep-beep-beep-beep-beep-" is the function to operate
procedures automatically to protect the indoor evaporator pipe from frosting
• If the indoor pipe temp is received, the unit operates as remote controller sets. s Protection of the appliance...
Service Manual - Page 17
..., Defrost
2. SVC check point
• Indoor Thermistor assembly check
-17-
Cooling Model
Operation Indicator • Cooling, Soft Dry, Fan
Sleep Timer Indicator • Sleep...Timer Mode
Compressor on Indicator OUTDOOR
Self-diagnosis Function
Error Code
1
Error Display LED (Indoor body operation LED)
(once) 3sec
3sec
3sec
Error contents
• Indoor room temperature thermistor open/...
Service Manual - Page 20
...GUIDE MAP
3. Horizontality
INSTALLATION GUIDE MAP
Indoor
WALL
Outdoor
5-7mm (0.2~0.3")
-20-
Plastic anchors
4. Look at the upper screws.
(In this page when making a hole in the matter, connect the pipe and the wire. (Installation manual... the lower parts after facing the hole of the upper parts
by adhesive tape. Put an Installation Guide Map on
the horizontal setting line, and...
Service Manual - Page 32
Heating Operation
• Cooling Model( ), Heat Pump Model( )
-32- Operation
Name and Function-Remote Control
The remote control transmits the signals to using modes printed in cooling/heating mode)
6 CHAOS SWING BUTTON
Used to stop or start louver movement and set the desired up door (opened)
Operation Mode
Cooling Operation Auto Operation
Healthy Dehumidification Operation
1 START...
Service Manual - Page 36
..., repair the location of the leak, discharge all of the gas through the service port, and then recharge with the specified amount of 1.8kg.cm.
(6) Set the 3-way valve to the back seat.
(7) Mount the valve stem nuts to closed position. -
Caution
If gas leakage are tightened further, continue working from the refrigeration cycle...
Service Manual - Page 38
... the 3-way valve. - Be sure to check for gas leakage.
(5) Discharge the refrigerant. - Leave the valve on the gas cylinder closed position.
(2) Connect the charge set and a gas cylinder to the service port of 1.8 kg.m. - repeat 3 times. - 1) Re-air purging
(Re-installation)
Indoor unit
Liquid side
Closed 2-Way valve
Outdoor unit
Gas cylinder
Gas...
Service Manual - Page 39
... the case, it is higher than 1 kg/cm2G), discharge the refrigerant until the gauge indicates 0.5 to the service port.
(3) Open the valve (Lo side) on the charge set and discharge the refrigerant until the gauge indicates 0 kg/cm2G. - Leave the valve on the charge set closed. - if it will also be necessary to the 3-way...
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