LG W081CA SG2 User manual

Ｒｏｏｍ Ａｉｒ Ｃｏｎｄｉｔｉｏｎｅｒ
ＳＥＲＶＩＣＥ ＭＡＮＵＡＬ
ＣＡＵＴＩＯＮ
－ＢＥＦＯＲＥ ＳＥＲＶＩＣＩＮＧ ＴＨＥ ＵＮＩＴ， ＲＥＡＤ ＴＨＥ ＳＡＦＥＴＹ
ＰＲＥＣＡＵＴＩＯＮＳ ＩＮ ＴＨＩＳ ＭＡＮＵＡＬ．
－ＯＮＬＹ ＦＯＲ ＡＵＴＨＯＲＩＺＥＤ ＳＥＲＶＩＣＥ．
ＭＯＤＥＬ：
WW112211CCMMHH SSCC33
WW008811CCAA SSGG22 WW118822CCAA TTSSNN00
WW112211CCMM SSCC22 WW008811CCMM TTSSGG22
WW009911CCAA TTSSGG00 WW118822CCMM TTSSNN00
WW009922CCAA TTSSGG00 WW118822CCMMHH TTSSNN11
WW112211CCAA TTSSCC22 WW224422CCAA TTSSNN00
WW112222CCMM TTSSCC00 WW224422CCMM TTSSNN00
WW112211CCMMHH SSCC33
WW112222CCMM SSCC00
WW112222CCMMHH SSCC11
WW242CCMM T S N 2
WW224422CCAA TTSSNN22
W121CM SC4
ｗｅｂｓｉｔｅ ｈｔｔｐ：／／ｗｗｗ ．ＬＧＥｓｅｒｖｉｃｅ．ｃｏｍ
ｅ－ｍａｉｌ ｈｔｔｐ：／／ｗｗｗ ．ＬＧＥｓｅｒｖｉｃｅ．ｃｏｍ／ｔｅｃｈｓｕｐ．ｈｔｍｌ

—2—
1. PREFACE
1.1 SAFETY PRECAUTIONS................................2
1.2 INSULATION RESISTANCE TEST .................2
1.3 SPECIFICATIONS...........................................3
1.4 FEATURES......................................................3
1.5 CONTROL LOCATIONS .................................4
2. DISASSEMBLY INSTRUCTIONS
2.1 MECHANICAL PARTS ....................................6
2.1.1 FRONT GRILLE .....................................6
2.1.2 CABINET ................................................6
2.1.3 CONTROL BOX .....................................6
2.2 AIR HANDLING PARTS ..................................7
2.2.1 AIR GUIDE AND BLOWER ....................7
2.2.2 FAN ........................................................7
2.2.3 SHROUD ................................................8
2.3 ELECTRICAL PARTS......................................8
2.3.1 OVERLOAD PROTECTOR ....................8
2.3.2 COMPRESSOR......................................8
2.3.3 CAPACITOR...........................................9
2.3.4 POWER CORD ......................................9
2.3.5 THERMOSTAT.......................................9
2.3.6 ROTARY SWITCH .................................9
2.3.7 MOTOR ................................................10
2.4 REFRIGERATION CYCLE ............................10
2.4.1 CONDENSER.......................................10
2.4.2 EVAPORATOR.....................................10
2.4.3 CAPILLARY TUBE ...............................11
3. INSTALLATION
3.1 SELECT THE BEST LOCATION...................13
3.2 CHECK OF INSTALLATION..........................13
3.3 HOW TO DRAIN............................................13
3.4 HOW TO INSTALL ........................................14
3.4.1 WHEN USING GASKET.......................14
3.4.2 WHEN USING INSTALLATION KITS...14
3.5 HOW TO USE THE REVERSIBLE
INLET GRILLE...............................................15
4. TROUBLESHOOTING GUIDE
4.1 OUTSIDE DIMENSIONS ...............................16
4.2 PIPING SYSTEM...........................................16
4.3 TROUBLESHOOTING GUIDE ......................17
5. SCHEMATIC DIAGRAM
5.1 CIRCUIT DIAGRAM ......................................29
5.2 ELECTRONIC CONTROL DEVICE...............31
5.3
COMPONENTS LOCATION(FOR MAIN P.C.B ASM) ..32
6. EXPLODED VIEW ..................................33
7. REPLACEMENT PARTS LIST........34
1. PREFACE
This SERVICE MANUAL provides various service information, including the mechanical and electrical
parts etc. This room air conditioner was manufactured and assembled under a strict quality control system.
The refrigerant is charged at the factory. Be sure to read the safety precautions prior to servicing the unit.
1.1 SAFETY PRECAUTIONS
1. When servicing the unit, set the ROTARY SWITCH
or POWER SWITCH to OFF and unplug the power
cord.
2. Observe the original lead dress.
If a short circuit is found, replace all parts which
have been overheated or damaged by the short
circuit.
3. After servicing the unit, make an insulation resis-
tance test to protect the customer from being
exposed to shock hazards.
1.2 INSULATION RESISTANCE TEST
1. Unplug the power cord and connect a jumper
between 2 pins (black and white).
2. The grounding conductor (green) is to be open.
3. Measure the resistance value with an ohm meter
between the jumpered lead and each exposed
metallic part on the equipment at all the positions
(except OFF) of the ROTARY SWITCH.
4. The value should be over 1MΩ.
CONTENTS

1.3 SPECIFICATIONS
8 000
820 12０011０0
7.6 11 10.2
10.8
INDOOR(℃)
OUTDOOR(℃)260g(9.2oz) 375g(13.2oz) 505g(17.8oz)
2R 14STACKS 2R 16STACKS 2R 13STACKS
2R 16STACKS 2R 18STACKS 2R 17STACKS
2/3
ROTARY SWITCH
THERMOSTAT
COMPRESSOR
FAN MOTOR
71/32.2
(inch) 181/2"×137/8"×2011/16"
(mm) 470×353×525
DRAIN PIPE OR SPLASHED BY FAN SLINGER
82/37.2
600×380×567
235/8"×1431/32"×225/16"
POWER CORD (3 WORE WITH GROUNDING)
ATTACHMENT PLUG (CORD-CONNECTED TYPE)
PROTECTOR
OUTSIDEDIMENSION
(W×H×D)
1Ø,115V,60Hz
9.8
26.7(DB),19.4(WB)
35(DB),23.9(WB)
CONSTRUCTION
FAN,OUTDOOR
12 000
VERTICAL LOUVER(RIGHT&LEFT)
HORIZONTAL LOUVER(UP&DOWN)
REFRIGERANT(R-22)CHARGE
EVAPORATOR
AIR DIRECTION CONTROL
FAN MOTOR
OPERATION CONTROL
ROOM TEMP,CONTROL
W121CMH.SC3
DRAIN SYSTEM
COOLING CAPACITY (Btu/h)
INPUT (W)
RUNNING CURRENT (A)
E.E.R (BTU/W.h)
CONDENSER
FAN,INDOOR
OPERATING
CONDITION
FAN SPEEDS,FAN/COOLING
MODEL
ITEM
POWER SUPPLY
W081CA.SG2Ｗ０８１ＣＭ．ＴＳＧ２ W121CM SC2 Ｗ１２１ＣＭ ＳＣ４
NET WEIGHT (lbs/kg)
TURBO
PROPELLER TYPE FAN WITH SLINGER-RING
3/3
6 POLESREMOTE CONTROLLER
THERMISTOR
SLIDE IN-OUT CHASSIS
OVERLOAD PROTECTOR
INTERNAL THERMAL PROTECTOR
*DB:Dry Bulb
**
WB:Wet Bulb
—3—

1.3 SPECIFICATIONS
1220 1110
5.5 5.1
9.8 10.8
INDOOR(℃)
OUTDOOR(℃)395g(13.9oz) 495g(17.5oz)
2R 18STACKS 2R 17STACKS
COMPRESSOR
FAN MOTOR
(inch)
(mm)
W122CM.SC0 W122CMH.SC1
POWER SUPPLY 1Ø,220V,60Hz
MODEL
ITEM
E.E.R (BTU/W.h)
OPERATING
CONDITION
COOLING CAPACITY (Btu/h) 12 000
INPUT (W)
RUNNING CURRENT (A)
FAN,INDOOR
FAN,OUTDOOR PROPELLER TYPE FAN WITH SLINGER-RING
REFRIGERANT(R-22)CHARGE
EVAPORATOR
CONDENSER
FAN SPEEDS,FAN/COOLING
FAN MOTOR 3/3 6 POLES
OPERATION CONTROL
ROOM TEMP,CONTROL REMOTE CONTROLLER THERMISTOR
AIR DIRECTION CONTROL
CONSTRUCTION
VERTICAL LOUVER(RIGHT&LEFT)
HORIZONTAL LOUVER(UP&DOWN)
SLIDE IN-OUT CHASSIS
82/37.2
PROTECTOR
POWER CORD
OVERLOAD PROTECTOR
INTERNAL THERMAL PROTECTOR
(3 WORE WITH GROUNDING)
ATTACHMENT PLUG (CORD-CONNECTED TYPE)
235/8" ×1431/32" ×225/16"
600 ×380 ×567
OUTSIDEDIMENSION
(W×H×D)
26.7(DB),19.4(WB)
35(DB),23.9(WB)
2R 13STACKS
TURBO
DRAIN SYSTEM
NET WEIGHT (lbs/kg) DRAIN PIPE OR SPLASHED BY FAN SLINGER
*DB:Dry Bulb
**
WB:Wet Bulb
—4—

1.3 SPECIFICATIONS
MODEL
ITEM
W091CA.TSG0 W092CA.TSG0 W121CA.TSC2 W122CA.TSC0
POWER SUPPLY
1Φ，115V,60Hz 1Φ，220V,60Hz 1Φ，115V,60Hz 1Φ，220V,60Hz
COOLING CAPACITY (Btu/h) 9000 12000
INPUT (W) 1000 1220
RUNNING CURRENT (A) 9.2 4.3 11 5.5
E.E.R (Btu/W.h) 9 9.8
OPERATING INDOOR (℃)26.7(DB) ,19.4(WB)
CONDITION OUTDOOR (℃)35.0(DB) ,23.9(WB)
REFIGERANT(R-22) CHARGE 350g(12.3oz) 365g(12.9) 375g(13.2) 395g(13.9)
EVAPORATOR 2R 12STACKS 2R 16STACKS 2R 13STACKS
CONDENSER 2R 16STACKS 1R 16STACKS 2R 18STACKS
FAN,INDOOR TURBO
FAN,OUTDOOR PROPELLER TYPE FAN WITH SL INGER-ING
FAN,SPEEDS,FAN/COOLING 2/3 3/3
FAN MOTOR 6 POLES
OPERATION CONTROL ROTARY SWITCH
ROOM TEMP,CONTROL THERMOSTAT
AIR DIRECTION CONTROL VERTICAL LOUVER (RIGHT&LEFT)
HORIZONTAL LOUVER (UP&DOWN)
CONSTRUCTION SLIDE IN-OUT CHASSIS
PROTECTOR COMPRESSOR OVERLOAD PROTECTOR
FAN MOTOR INTERNAL THERMAL PROTECTOR
POWER CORD (3 WORE WITH GROUNDING)
ATTACHMENT PLUG (CORD-CONNECTED TYPE)
DRAIN SYSTEM DRAIN PIPE OR SPLASHED BY FAN SL INGER
NET WEIGHT (1bs/kg）71/32.2 82/37.2
OUT SIDE
DIMENSION(W*H*D) (inch) 181/2''×137/8''×2011/16'' 235/8''×1431/32''×225/16''
(mm) 470×353×525 600×380×567
*DB:Dry Bulb
*WB:Wet Bulb
—5—

1.3 SPECIFICATIONS
INDOOR (
)
OUTDOOR (
)
COMPRESSOR
FAN MOTOR
(inch)
(mm)
*DB:Dry Bulb
*WB:Wet Bulb
OUT SIDE
DIMENSION(W*H*D)
DRAIN SYSTEM
NET WEIGHT (1bs/kg
ITEM
—6—
65/29.5 67/30.4
2R 15STACKS
2R 18STACKS
PROTECTOR INTERNAL OVERLOAD PROTECTOR
INTERNAL THERMAL PROTECTOR
POWER CORD (3 WORE WITH GROUNDING)
ATTACHMENT PLUG (CORD-CONNECTED TYPE)
AIR DIRECTION CONTROL VERTICAL LOUVER (RIGHT&LEFT)
HORIZONTAL LOUVER (UP&DOWN)
CONSTRUCTION SLIDE IN-OUT CHASSIS
OPERATION CONTROL ROTARY SWITCH
ROOM TEMP,CONTROL THERMOSTAT
FAN,SPEEDS,FAN/COOLING 2/3 3/3
FAN MOTOR 6 POLES
REFIGERANT(R-22) CHARGE
FAN,INDOORTURBO
FAN,OUTDOOR AXIAL
CONDENSER 2R 16STACKS 1R 16STACKS
EVAPORATOR
OPERATING26.7(DB) ,19.4(WB)
CONDITION 35.0(DB) ,23.9(WB)
E.E.R (Btu/W.h) 9.7 8.5
RUNNING CURRENT (A)
COOLING CAPACITY (Btu/h) 18000 24000
INPUT (W) 1850 2820
W242CM.TSN0
POWER SUPPLY
MODEL W0182CA.TSN0 W182CM.TSN0 W242CA.TSN0
26×1627/32''×305/16''
600×428×770
1F 220V,60Hz
8.6 12.9
720g(25.4oz) 830g(29.3oz)
2R 16STACKS 2R 13STACKS
DRAIN PIPE OR SPLASHED BY FAN SL INGER
W242CM.TSN2
W242CA.TSN2

1F，220V~,60Hz
17 800
1 660
7.4
INDOOR (℃)26.7(DB) ,19.4(WB)
OUTDOOR (℃
)
35.0(DB) ,23.9(WB)
7800g(27.5oz)
P9.52 3R 15C
P9.52 2R 16C
TURBO
PROPELLER TYPE FAN WITH SLINGER-RING
2/3
6 POLES
REMOTE
THERMISTOR
VERTICAL LOUVER (RIGHT&LEFT)
HORIZONTAL LOUVER (UP&DOWN)
SLIDE IN-OUT CHASSIS
COMPRESSOR INTERNAL OVERLOAD PROTECTOR
FAN MOTOR INTERNAL THERMAL PROTECTOR
(3 WORE WITH GROUNDING)
ATTACHMENT PLUG (CORD-CONNECTED TYPE)
DRAIN PIPE OR SPLASHED BY FAN SL INGER
130/60
(inch) 26 x 16 27/32 x 30 5/16
(mm) 660×428×770
W182CMH
OUT SIDE
DIMENSION(W*H*D)
DRAIN SYSTEM
NET WEIGHT (1bs/kg）
PROTECTOR
POWER CORD
AIR DIRECTION CONTROL
CONSTRUCTION
OPERATION CONTROL
ROOM TEMP,CONTROL
FAN,SPEEDS,FAN/COOLING
FAN MOTOR
FAN,INDOOR
FAN,OUTDOOR
CONDENSER
EVAPORATOR
CONDITION
REFIGERANT(R-22) CHARGE
OPERATING
MODEL
ITEM
INPUT (W)
RUNNING CURRENT (A)
POWER SUPPLY
COOLING CAPACITY (Btu/h)
1.3 SPECIFICATIONS
*DB:Dry Bulb
*WB:Wet Bulb
—7—

—8—
1.4 FEATURES
• Designed for COOLING ONLY.
• Powerful and whispering cooling.
• Slide-in and slide-out chassis for the simple
installation and service.
• Side air-intake, side cooled-air discharge.
1.5 CONTROL LOCATIONS
1.5.1 COOLING ONLY MODEL
• VENTILATION
The ventilation lever must be in the CLOSE position
in order to maintain the best cooling conditions.
When a fresh air is necessary in the room, set the
ventilation lever OPEN position.
The damper is opened and room air is exhausted.
• THERMOSTAT
Thermostat will automatically control the temperature
of the room. Select a higher number for a cooler
temperature in the room. The temperature is selected
by positioning the knob to the desired position.
The 5or 6position is a normal setting for average
conditions.
• OPERATION
Off - Turns air conditioner off.
Med Fan - Med speed fan operation without cooling.
Low Fan - Low speed fan operation without cooling.
High Cool - Cooling with high speed fan operation.
Med Cool - Cooling with med speed fan operation.
Low Cool - Cooling with low speed fan operation.
• Built-in adjustable THERMOSTAT
• Washable one-touch filter
• Compact size
• Reliable and efficient rotary compressor is equipped.
CLOSE VENT OPEN
Thermostat
Warmer Cooler
BEFORE RESTARTING
WAIT THREE MINUTES
Operation
1
Thermostat Operation
2
3
4
9
8
7
6
5
Off
Med
Fan
Low
Fan
High
Cool
Med
Cool
Low Cool
Wait Three Minutes
Before Restarting
•OPERATION
Off ( ) : Turns the air conditioner off.
Low Fan ( ) : Permits the low fan speed operation
without cooling (heating).
Low Cool ( ) : Permits cooling with the low fan
speed operation.
High Cool ( ) : Permits cooling with the high fan
speed operation.
Low Heat ( ) :
Permits heating with the low fan
speed operation.
High Heat
( ) : Permits heating with the high fan
speed operation.
•Auto Swing (For R1403/WR1210)
On: Air Swing is operated while operation knob is set to
the Cool position
Off: Stops the operation of air swing.
A slight heat odor may come from the unit when
first switching to HEAT after the cooling season
is over.
This odor, caused by fine dust particles on the
heater, will disappear quickly.

—9—
1.5.2 COOLING ONLY MODEL WITH REMOTE CONTROL AND TOUCH TYPE
POWER BUTTON
To turn the air conditioner ON, push the button. To turn the air conditioner OFF, push the button again.
This button takes priority over any other buttons.
OPERATION MODE SELECTION BUTTON
Every time you push this button, it will toggle COOL, FAN and DRY.
ON/OFF TIMER BUTTON
Everytime you push this betton, timer is set as follows.(1Hours ➔2Hours➔ 3Hours➔ 4Hours➔ 5Hours➔ 6Hours➔
7Hours➔ 8Hours➔ 9Hours➔ 10Hours➔ 11Hours➔ 12Hours➔ Cancel)
FAN SPEED SELECTOR
Everytime you push this button, it is set as follows.
( High [F3] ➔Low[F1] ➔Med[F2]➔High[F3]... )
ROOM TEMPERATURE SETTING BUTTON
This button can automatically control the temperature of the room.
The temperature can be set within a range of 16˚C to 30˚C by 1˚C or within a range of 60°F to 86°F by 1°F.
Select the lower number for lower temperature of the room.
ENERGY SAVER
The fan stops when the compressor stops cooling.
Approximately every 3 minutes the fan will tern on and check the room air to determine if cooling is needed.
AUTO SWING
This button can automatically control the air flow direction.
SLEEP MODE BUTTON
Press the sleep mode button to set the time you want the unit to turn off automatically. The timer is programmed in one
hour increment by pressing the button. Every time you push this button, the remaining time will be set as follows.(1Hour ➔
2Hours ➔3Hours ➔4Hours ➔ 5Hours ➔6Hours ➔7Hours ➔0Hour ➔1Hour➔ 2Hours➔... )
Note: The Sleep Mode will be operated at low fan speed for quiet sleeping. The temperature will automatically rise by 1°C
over the next 30 minutes and by 2°C in 1 hour for comfortble sleeping.
REMOCON SIGNAL RECEIVER
6
6
7
7
8
8
9
9
Precaution: The Remote Control unit will not function properly if strong light strikes the sensor window of the air
conditioner or if there are obstacles between the Remote Control unit and the air conditioner.
REMOTE CONTROL
DISPLAY
1
7
3
5
6
4
1
7
3 24
5 6
1
7
34
5 6
4
3
6
2
5
1
5
4
1
3
6

—10—
2.1 MECHANICAL PARTS
2.1.1 FRONT GRILLE
1. Open the lnlet grille upward .
2. Remove the screw which fastens the front grille.
3. Pull the front grille from the right side.
4. Remove the front grille.
5. Re-install the component by referring to the
removal procedure, above.(See Figure 1)
2.1.2 CABINET
1. After disassembling the FRONT GRILLE, remove
the 2 screws which fasten the cabinet at both
sides.
2. Remove the 2 screws which fasten the cabinet at
back.
3. Pull the base pan forward. (See Figure 2)
4. Remove the cabinet.
5. Re-install the component by referring to the
removal procedure, above.
2.1.3 CONTROL BOX
1. Remove the front grille. (Refer to section 2.1.1)
2. Remove the cabinet. (Refer to section 2.1.2)
3. Remove the 2 screws which fasten the control box
cover.
4. Remove two housings which connect compressor
wire and motor wire in the control box.
5.Discharge the capacitor by placing a 20,000
ohmresistor across the capacitor terminals.
6. Remove the 2 screws which fasten the control
box.
7. Pull the control box forward completely.
8. Re-install the components by referring to the
removal procedure, above. (See Figure 3)
(Refer to the circuit diagram found on pages
29~30 in this manual and on the control box.)
2. DISASSEMBLY INSTRUCTIONS
—Before the following disassembly, POWER SWITCH set to OFF and disconnect the power cord.
Figure 1
Figure 3
Figure 2

—11—
2.2 AIR HANDLING PARTS
2.2.1 AIR GUIDE AND BLOWER
1. Remove the front grille. (Refer to section 2.1.1)
2. Remove the cabinet. (Refer to section 2.1.2)
3. Remove the control box. (Refer to section 2.1.3)
4. Remove the 4 screws which fasten the brace.
5. Remove the brace.
6. Remove the 2 screws which fasten the evaporator.
7. Move the evaporator forward and pulling it upward
slightly. (See Figure 4)
8. Move the evaporator to the left carefully.
9. Pull out the hook of orifice by pushing the tabs and
remove it. (See Figure 5)
10. Remove the clamp with a hand plier which
secures the blower.
11. Remove the blower.
12. Remove the 4 screws which fasten the air guide
from the barrier.
13. Move the air guide backward, pulling out from the
base pan.
14. Re-install the components by referring to the
removal procedure, above.
2.2.2 FAN
1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the brace (Refer to section 2.2.1)
3. Remove the 5 screws which fasten the condenser.
4. Move the condenser to the left carefully.
5. Remove the clamp which secures the fan.
6. Remove the fan. (See Figure 7)
7. Re-install by referring to the removal procedure.
Figure 4
Figure 5
Figure 6
Figure 7

—12—
2.2.3 SHROUD
1. Remove the fan. (Refer to section 2.2.2)
2. Remove the screw which fastens the shroud.
3. Remove the shroud. (See Figure 8)
4. Re-install the component by referring to the
removal procedure, above.
2.3 ELECTRICAL PARTS
2.3.1 OVERLOAD PROTECTOR
1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the nut which fastens the terminal cover.
3. Remove the terminal cover. (See Figure 9)
4. Remove all the leads from the overload protector.
5. Remove the overload protector.
6. Re-install the component by referring to the
removal procedure, above.
2.3.2 COMPRESSOR
1. Remove the cabinet. (Refer to section 2.1.2)
2. Discharge the refrigerant system using a FreonTM
Recovery System.
If there is no valve to attach the recovery system,
install one (such as a WATCO A-1) before venting
the FreonTM. Leave the valve in place after
servicing the system.
3. Remove the overload protector. (Refer to section
2.3.1)
4. After purging the unit completely, unbraze the
suction and discharge tubes at the compressor
connections.
5. Remove the 3 nuts and the 3 washers which
fasten the compressor.
6. Remove the compressor. (See Figure 10)
7. Re-install the components by referring to the
removal procedure, above.
Figure 8
Figure 9
Figure 10

—13—
2.3.3 CAPACITOR
1. Remove the control box. (Refer to section 2.1.3)
2. Remove the knobs and the screw which fasten
control panel from control box.
3. Remove the screw which located in the front.
4. Open the bottom side of control box.
5. Remove the screw and the clamp which fastens
the capacitor.
6. Disconnect all the leads of capacitor terminals.
7. Re-install the components by referring to the
removal procedure, above. (See Figure 11)
2.3.4 POWER CORD
1. Remove the control box. (Refer to section 2.1.3)
2. Open the control box. (Refer to section 2.3.3)
3. Disconnect the grounding screw from the control
box.
4. Disconnect the 2 receptacles.
5. Remove a screw which fastens the clip cord.
(See Figure 12)
6. Remove the power cord.
7. Re-install the component by referring to the above
removal procedure, above.
(Use only one ground-marked hole for ground
connection.)
8. If the supply cord of this appliance is damaged, it
must be replaced by the special cord. (The
special cord means the cord which has the same
specification marked on the supply cord attached
at the unit.)
2.3.5 THERMOSTAT
1. Remove the control box. (Refer to section 2.1.3)
2. Open the control box. (Refer to section 2.3.3)
3. Remove the 2 screws which fasten the thermostat.
4. Disconnect 2 leads of thermostat terminals.
5. Remove the thermostat.
6. Re-install the components by refereing to the
above removal procedure. (See Figure 13)
2.3.6 ROTARY SWITCH
1. Remove the control box. (Refer to section 2.1.3)
2. Open the control box. (Refer to section 2.3.3)
3. Remove the 2 screws which fasten the rotary
switch.
4. Disconnect all the leads of the rotary switch
terminals.
5. Remove the rotary switch.
6. Re-install the components by referring to the
above removal procedure. (See Figure 14)
Figure 12
Figure 11
Figure 13
Figure 14

—14—
2.3.7 MOTOR
1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the evaporator. (Refer to section 2.2.1)
3. Remove the orifice. (Refer to section 2.2.1)
4. Remove the blower. (Refer to section 2.2.1)
5. Remove the fan. (Refer to section 2.2.2)
6. Remove the control box cover and disconnect 5 or
4 wires of motor housing. (Refer to section 2.1.3)
7. Remove the 2 or 4 screws which fasten the motor
from the mount motor. (See Figure 15)
8. Remove the motor.
9. Re-install the components by referring to the
removal procedure, above.(See Figure 15)
2.4 REFRIGERATING CYCLE
2.4.1 CONDENSER
1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the 4 screws which fasten the
brace.(Refer to section 2.2.1)
3. Remove the 5 screws which fasten the condenser
and shroud.
4. After discharging the refrigerant completely,
unbraze the interconnecting tube at the condenser
connections.
5. Remove the condenser.
6. Re-install the component by referring to notes.
(See Figure 16)
2.4.2 EVAPORATOR
1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the 2 screws which fasten the evaporator.
3. Move the evaporator sideways carefully.
(Refer to section 2.2.1)
4. After discharging the refrigerant completely,
unbraze the interconnecting tube at the evaporator
connections.
5. Remove the evaporator.
6. Re-install the component by referring to notes.
(See Figure 17)
Figure 15
Figure 16
Figure 17
Discharge the refrigerant system using a
FreonTM Recovery System.
If there is no valve to attach the recovery
system, install one (such as a WATCO A-1)
before venting the FreonTM. Leave the valve in
place after servicing the system.
CAUTION

—15—
—Replacement of the refrigeration cycle.
1. When replacing the refrigeration cycle, be sure to
Discharge the refrigerant system using a FreonTM
recovery System.
If there is no valve to attach the recovery system,
install one (such as a WATCO A-1) before venting
the FreonTM. Leave the valve in place after
servicing the system.
2. After discharging the unit completely, remove the
desired component, and unbraze the pinch-off
tubes.
3. Solder service valves into the pinch-off tube ports,
leaving the valves open.
4. Solder the pinch-off tubes with Service valves.
5. Evacuate as follows.
1) Connect the vacuum pump, as illustrated figure
18A.
2) Start the vacuum pump, slowly open manifold
valves A and B with two full turns
counterclockwise and leave the valves open.
The vacuum pump is now pulling through valves
A and B up to valve C by means of the manifold
and entire system.
3) Operate the vacuum pump for 20 to 30 minutes,
until 600 microns of vaccum is obtained. Close
valves A and B, and observe vacuum gauge for
a few minutes. A rise in pressure would
indicate a possible leak or moisture remaining in
the system. With valves A and B closed, stop
the vacuum pump.
4) Remove the hose from the vacuum pump and
place it on the charging cylinder. See figure
18B.
Open valve C.
Discharge the line at the manifold connection.
5) The system is now ready for final charging.
6. Recharge as follows :
1) Refrigeration cycle systems are charged from
the High-side. If the total charge cannot be put
in the High-side, the balance will be put in the
suction line through the access valve which you
installed as the system was opened.
2) Connect the charging cylinder as shown in figure
18B.
With valve C open, discharge the hose at the
manifold connection.
3) Open valve A and allow the proper charge to
enter the system. Valve B is still closed.
4) If more charge is required, the high-side will not
take it. Close valve A.
5) With the unit running, open valve B and add the
balance of the charge.
a. Do not add the liquid refrigerant to the Low-
side.
b. Watch the Low-side gauge; allow pressure to
rise to 30 lbs.
c. Turn off valve B and allow pressure to drop.
d. Repeat steps b. and c. until the balance of the
charge is in the system.
6) When satisfied the unit is operating correctly,
use the pinch-off tool with the unit still running
and clamp on to the pinch-off tube. Using a tube
cutter, cut the pinch-off tube about 2 inches from
the pinch-off tool. Use sil-fos solder and solder
pinch-off tube closed. Turn off the unit, allow it to
set for a while, and then test the leakage of the
pinch-off connection.
NOTES
If high vacuum equipment is used, just crack
valves A and B for a few minutes, then open
slowly with the two full turns counterclockwise.
This will keep oil from foaming and being
drawn into the vacuum pump.
2.4.3 CAPILLARY TUBE
1. Remove the cabinet. (Refer to section 2.1.2)
2. After discharging the refrigerant completely,
unbraze the interconnecting tube at the capillary
tube.(See caution above)
3. Remove the capillary tube.
4. Re-install the component by referring to notes.
CAUTION

—16—
Equipment needed: Vacuum pump, Charging cylinder, Manifold gauge, Brazing equipment. Pin-off tool capable
of making a vapor-proof seal, Leak detector, Tubing cutter, Hand Tools to remove components, Service valve.
A
COMPOUND GAUGE
EVAPORATOR
(LOW PRESSURE SIDE)
COMPRESSOR
CAPILLARY TUBE
CONDENSER
(HIGH PRESSURE SIDE)
SEE INSETS
BELOW
MANIFOLD
GAUGE
B
Figure 18A-Pulling Vacuum Figure 18B-Charging
A
B
EXTERNAL
VACUUM PUMP
A
CHARGING
CYLINDER
LOW HI
B
C

—17—
3. INSTALLATION
3.1 SELECT THE BEST LOCATION
1.To prevent vibration and noise, make sure the unit
is installed securely and firmly.
2.Install the unit where the sunlight does not shine
directly on the unit.
3.The outside of the cabinet must extend outward for
at least 12" and there should be no obstacles, such
as a fence or wall, within 20" from the back of the
cabinet because it will prevent heat radiation of the
condenser.
Restriction of outside air will greatly reduce the
cooling efficiency of the air conditioner.
4.Install the unit a little slanted so the back is slightly
lower than the front (about 1/2"). This will help force
con-densed water to the outside.
5.Install the unit from the bottom about 30"~60"
above the floor level.
3.2 CHECK OF INSTALLATION
The setting conditions must be checked prior to
initial starting.
The undermentioned items are especially important
checking points when the installation is finished.
1. Grounding wire (Green or Green and Yellow) is
provided in the power cord. The green wire must
be grounded.
2. Connect to a single-outlet 15A circuit.
(or 20A circuit for Electric Heater Model)
3. To avoid vibration or noise, make sure the air
conditioner is installed securely.
4 Avoid placing furniture or draperies in front of the
air inlet and outlet.
3.3. HOW TO DRAIN
(When using drain pipe)
The air conditioner must be installed horizontally or
tilted slightly to the outside for proper water
drainage.
On exceptionally hot and humid days the air
conditioner may overflow conclensed water.
If the air conditioner is used in hot and a high
humidity zone, exchange the HOLE RUBBER
for the DRAIN PIPE.(See figure 20, figure 21.)
All side louvers of the cabinet must remain
exposed to the outside of the structure.
AWNING
COOLED AIR HEAT
RADIATION
30"~60"
ABOUT 1/2"
Over 20"
FENCE
BASE PAN
HOLE RUBBER
DRAIN PIPE
1
BOTTOM
2
BASE PAN BOTTOM
Figure 20
Figure 21
Figure 19
CAUTION

—18—
3.4 HOW TO INSTALL
SUGGESTED TOOL REQUIREMENTS
PREPARATION OF CHASSIS
1. Before installing the room air conditioner, please
install the knob. (If it is not fixed on the unit.)
2. Remove the screws which fasten the cabinet at
both sides and at the back.
3. Slide the unit from the cabinet by gripping the base
pan handle and pulling forward while
bracing the cabinet.
4. Slide the air conditioner into the case.
Reinstall the 2 screws removed earlier on each side
of the case.
CAUTION: The power cord must be connected to an independent
circuit. The green wire must be grounded.
5. Stuff the foam between the top of the unit and the
wall to prevent air and insects from getting into the
room.
6. Attach the front grille to the case by inserting the
tabs on the grille into the slots on the front of the
case. Push the grille in until it snaps into place.
When you detach the front grille from the case,
push the grille to your right side and pull it toward
you.
7. Lift the inlet grill and secure the front grille with a
screw. Lower the inlet grille into place.
(In case of some models, you can secure the front grille
from the right side or lower side.)
Shipping
Screws
SCREWDRIVER(+, -), RULLER, KNIFE, HAMMER, PENCIL, LEVEL
Figure 22
Figure 23
Figure 24
Figure 27
Figure 28
Figure 29
Figure 25
Figure 26

—19—
1. If you want to pull out the filter upward, open the
inlet grille slightly. Turn inside out the front grille.
Disassemble the inlet grille from the front grille
with separating the hinged part by inserting a "—"
type screw-driver tip.
Rotate the inlet grille 180 degrees and insert the
hooks into the lower holes of front grille.
Then, insert the filter (See Figure 30, 31)
2. Attach the front grille to the cabinet by inserting the
tabs on the grille into the tabs on the front of the
cabinet. Push the grille in until it snaps into place.
(See Figue 32)
3. Lift the inlet grille and secure it with a type A screw
through the front grille.
(See Figure 33)
4. If you want to pull out the filter downward, use the
reversible inlet grille without change.
(The grille is already assembled for that way.)
Inlet Grille
3.5 HOW TO USE THE
REVERSIBLE INLET GRILLE
Figure 30
Figure 31
Figure 32
Figure 33

—20—
A
o
4. TROUBLESHOOTING GUIDE
4.1 OUTSIDE DIMENSIONS unit: mm(inch)
4.2 PIPING SYSTEM
Figure 34 is a brief description of the important components and their function in what is called the refrigeration
system. This will help you to understand the refrigeration cycle and the flow of the refrigerant in the cooling cycle.
MOTOR
COMPRESSOR
OIL
(LIQUID REFRIGERANT)
CAPILLARY TUBE
OUTSIDE COOLING
AIR FOR REFRIGERANT
PASS THROUGH
SUCTION LINE
COOL LOW PRESSURE VAPOR
COOLED
AIR
COMPLETE LIQUID
BOIL OFF POINT
LIQUID
PRESSURE
DROP
ROOM AIR HEAT LOAD
VAPOR INLET
HOT
DISCHARGED
AIR
LIQUID OUTLET
HIGH PRESSURE VAPOR
LIQUID REFRIGERANT
LOW PRESSURE VAPOR
ROOM AIR CONITIONER
EVAPORATOR COILS CONDENSER COILS
CYCLE OF REFRIGERATION
CAPILLARY TUBE
COMPRESSOR
BLOWER
EVAPORATOR COIL
CONDENSER COIL
FAN
MOTOR
Figure 34
B
C
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