LG LV-C362FLA0 User manual

Ceiling & Floor Type Air Conditioner
SVC MANUAL(Exploded View)
MODEL : LV-C362FLA0
LV-C422FLA0
LV-C482GLA0
LV-C602HLA0
LV-C48BGLA0
LV-C60BHLA0
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
Internal Use Only
http://biz.lgservice.com

Contents
Functions .................................................................................................................................3
Product Specifications (Cooling only) ...................................................................................5
Dimensions ..............................................................................................................................7
Refrigeration Cycle Diagram ..................................................................................................9
Wiring Diagram ......................................................................................................................10
Operation Details ...................................................................................................................13
Installation of Indoor, Outdoor Unit .....................................................................................18
Connecting Pipes to the Indoor Unit....................................................................................25
Connecting Pipes to the Outdoor Unit.................................................................................27
Checking the Drainage...........................................................................................................27
Connecting Cables between Indoor Unit and Outdoor Unit...............................................28
Air Purging of the Connecting Pipes and the Indoor Unit..................................................31
Operation ...............................................................................................................................32
3-way Valve ............................................................................................................................33
Cycle........................................................................................................................................38
Troubleshooting .....................................................................................................................41
Exploded View........................................................................................................................43
- 2 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only

- 3 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Functions
• Room temperature sensor. (Thermistor)
• Maintains the room temperature in accordance with the Setting Temp.
• Indoor fan is delayed for 5 seconds at the starting.
•Restarting is inhibited for approx. 3 minutes.
• High, Med, Low, Chaos
• Intermittent operation of fan at low speed.
• The fan is switched to low(Cooling) speed.
• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.
• The fan is switched to intermittent or irregular operation
• The fan speed is automatically switched from high to low speed.
• The louver can be set at the desired position or swing
up and down automatically.
• The setting temperature, indoor fan speed and desired
operation made are automatically set by fuzzy rule.
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Time Delay Safety Control
Indoor Fan Speed Control
Soft Dry Operation Mode
Sleep Mode Auto Control
Natural Air Control by CHAOS Logic
Airflow Direction Control
Auto Operation

- 4 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Soft Dry Operation Mode.( )
Remote Controller
Operation ON/OFF
Reset
Operation Mode Selection
Fan Speed Selection
Room Temperature Display
Temperature Setting
Setting the Time or Timer
Timer Selection
Timer Setting
Timer Cancel
Sleep Operation
Airflow Direction Control
(Cooling
model only)
TEMPERATURE LOW HIGH
(Low) (Med) (High) (CHAOS)
Cooling Operation Mode.( ) Auto Operation Mode.( )
Fan Operation Mode
ON OFF
SET
CANCEL
: High:39°C↔LOW:11°C
: OFF, ON, OFF ↔ON
: Cancel Sleep Mode, Timer ON or Timer OFF.
: 1, 2, 3, 4, 5, 6, 7hr, Off Timer
: Fan Operates without cooling. (Cooling model only)
Cooling Down to 18°C
Up to 30°C,

- 5 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Product Specifications (Cooling & Heating)
Items Unit
Cooling Capacity kcal/hr(W)
Btu/hr
Heating Capacity kcal/hr(W)
Btu/hr
Input Cooling/Heating W
Running Current Cooling/Heating A
Starting Current Cooling/Heating A
Power Supply Ø,V,Hz
Power Factor %
E.E.R Cooling kcal/hr W(W/W)
Btu/hr W
C.O.P Heating W/W(kcal/hr W)
Btu/hr W
Setting temperature range(cool/heat)
Dehumidification Rate l/h
Refrigerant Control
Refrigerant charge g(oz), type
Indoor fan motor Output w
Model
No. of Poles
Input W
Running Current A
Capacitor µF/Vac
Indoor Fan Type
No. Used / Diameter EA/inch(mm)
Motor Step
Indoor Fan RPM Cooling(H/M/L) rpm
Heating(H/M/L) rpm
Air Circulation Indoor (H/M/L) CMM(CFM)
Noise Level(Sound Press,1m) Indoor(H/M/L) dB(A)±3
Temperature Controller
Indoor Coil Tube Size (OD) inch(mm)
Fins per inch
No. of Rows & Column
Dimensions (W*H*D) Indoor inch(mm)
Net Weight indoor kg(lbs)
Compressor Locked Rotor Amp. A
Type
Quantity No
Model
Maker
Capacity Btu/hr
Motor Type
Motor Input W
Oil Type
Oil Charge cc
O.L.P Type(model name)
Outdoor Coil Tube Size (OD) inch(mm)
Fins per inch
No. of Rows & Column
Outdoor fan motor Output W
Model
No. of Poles
Input W
Running Current A
Capacitor µF/Vac
Outdoor Fan Type
No. Used / Diameter EA/mm
Discharge Side/Top
Speed rpm
Air Circulation Outdoor CMM(CFM)
Noise Level(Sound Press,1m)
Outdoor dB(A)±3
SVC Valve Liquid inch(mm)
Gas inch(mm)
Dimensions (W*H*D) Outdoor inch(mm)
Net Weight Outdoor kg(lbs)
Power Supply Cable No.* mm2
Connecting Cable No.* mm2
Connecting Tube Liquid Side inch(mm)
(Ø. Socket Flare) Gas Side inch(mm)
Length, std m
Max length/elevation m
Drain hose(Inner Ø) Indoor Unit/Outdoor Unit mm
Packing Dimension Indoor(W*H*D) inch(mm)
Outdoor(W*H*D) inch(mm)
Stuffing Quantity With(Without) S/Parts 20/40ft
LV-C362FLA0 LV-C422FLA0 LV-C482GLA0
9,072(10,551) 10,584(12,309) 12,096(1,4067)
36,000 42,000 48,000
---
---
3,950 4,400 5,100
18.5 19.5 20
90 90 90
1, 220, 60 1, 220, 60 1, 220, 60
96.5 97 97
2.29(2.66) 2.18(2.55) 2.27(2.64)
9.1 8.5 9
---
---
18~30/- 18~30/- 18~30/-
4.26 4.91 4.96
Capillary Tube Capillary Tube Capillary Tube
1,830(64.55),R22 2,650(93.4),R22 3,000(107.7),R22
KDE2FS0654 KDE2FS0654 KHF2G4001
444
250 260 380
1.17 1.17 1.73
5.0/370 7.5/370 7.5/370
Centrifugal Centrifugal centrifugal
4/144 4/144 3/164
333
1400/1200/1000 1450/1250/1050 1470/1240/1040
---
31/27/22 33/29/24 36/32/27
56/54/52 57/55/53 59/57/55
Thermistor Thermistor Thermistor
9.7 9.7 9.7
13 13 13
3R 10C 3R 10C 4R 10C
1550/650/208 1550/650/208 1550/650/272
52(115) 52(115) 61(134)
102 92 92 120
Reciprocating Rotary Rotary Rotary
122
CR42K6-PFV-502 QP-306KC QJ-278KC QP-348KC
Copeland LG LG LG
10,559(41,900) 22,600 19,200 25,700
PCS PSC PSC PSC
3,850 2,152 1,980 2,424
SUNISO 3GS SUNISO 4GSI SUNISO 4GSI SUNISO 4GSI
1,331 700 500 700
Internal Internal Internal Internal
0.275(7.0) 0.375(9.52) 0.375(9.52)
18 17 17
2R36C 1R 44C 1R 44C
125 90*2 90*2
ARE306B01 AMR071B9 AMR071B9
666
190 168*2 168*2
0.81*2 0.81*2
6/370 6.0/370 6.0/370
Propeller Propeller Propeller
1/460 2/460 2/460
Side Discharge Side Discharge Side Discharge
1040 900 900
58(2,048) 49(1,730)*2 49(1,730)*2
58 58 58
3/8(9.52) 3/8(9.52) 1/2(12.7)
5/8(15.88) 3/4(19.05) 3/4(19.05)
34.3*31.5*12.6(870*800*320) 35.43*48.23*14.57(900*1225*370) 35.43*48.23*14.57(900*1225*370)
72(158.7) 90(198.3) 90(198.3)
3*8.5 3*8.5 3*8.5
4*0.75 4*0.75 4*0.75
3/8(9.52) 3/8(9.52) 1/2(12.7)
5/8(15.88) 3/4(19.05) 3/4(19.05)
7.5 7.5 7.5
15/12.5 15/12.5 15/12.5
22.22 22.22 22.22/
1635/751/293 1635/751/293 1635/751/358
40.2*34.2*17.3(1020*870*440) 42.1*52.1*19.5(1070*1300*495) 42.1*52.1*19.5(1070*1300*495)
34/76 22/48 21/45
General
Indoor
Outdoor
Outdoor

- 6 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Items Unit
Cooling Capacity kcal/hr(W)
Btu/hr
Heating Capacity kcal/hr(W)
Btu/hr
Input Cooling/Heating W
Running Current Cooling/Heating A
Starting Current Cooling/Heating A
Power Supply Ø,V,Hz
Power Factor %
E.E.R Cooling kcal/hr W(W/W)
Btu/hr W
C.O.P Heating W/W(kcal/hr W)
Btu/hr W
Setting temperature range(cool/heat)
Dehumidification Rate l/h
Refrigerant Control
Refrigerant charge g(oz), type
Indoor fan motor Output w
Model
No. of Poles
Input W
Running Current A
Capacitor µF/Vac
Indoor Fan Type
No. Used / Diameter EA/inch(mm)
Motor Step
Indoor Fan RPM Cooling(H/M/L) rpm
Heating(H/M/L) rpm
Air Circulation Indoor (H/M/L) CMM(CFM)
Noise Level(Sound Press,1m)
Indoor(H/M/L) dB(A)±3
Temperature Controller
Indoor Coil Tube Size (OD) inch(mm)
Fins per inch
No. of Rows & Column
Dimensions (W*H*D) Indoor inch(mm)
Net Weight indoor kg(lbs)
Compressor Locked Rotor Amp. A
Type
Quantity No
Model
Maker
Capacity Btu/hr
Motor Type
Motor Input W
Oil Type
Oil Charge cc
O.L.P Type(model name)
Outdoor Coil Tube Size (OD) inch(mm)
Fins per inch
No. of Rows & Column
Outdoor fan motor Output W
Model
No. of Poles
Input W
Running Current A
Capacitor µF/Vac
Outdoor Fan Type
No. Used / Diameter EA/mm
Discharge Side/Top
Speed rpm
Air Circulation Outdoor CMM(CFM)
Noise Level(Sound Press,1m) Outdoor dB(A)±3
SVC Valve Liquid inch(mm)
Gas inch(mm)
Dimensions (W*H*D) Outdoor inch(mm)
Net Weight Outdoor kg(lbs)
Power Supply Cable No.* mm2
Connecting Cable No.* mm2
Connecting Tube Liquid Side inch(mm)
(Ø. Socket Flare) Gas Side inch(mm)
Length, std m
Max length/elevation m
Drain hose(Inner Ø) Indoor Unit/Outdoor Unit mm
Packing Dimension Indoor(W*H*D) inch(mm)
Outdoor(W*H*D) inch(mm)
Stuffing Quantity With(Without) S/Parts 20/40ft
LV-C602HLA0 LV-C48BGLA0 LV-C60BHLA0
15,120/(17,584) 12,096(14,067) 15,120(17,584)
60,000 48,000 60,000
---
---
6,300 5,200 6,300
29 14.5 18.2
101 90 124
1, 220, 60 3, 220, 60 3, 220, 60
98.8 92.6 89.3
2.33(2.72) 2.22(2.57) 2.14(2.48)
9.25 8.8 8.5
---
---
18~30/- 18~30/- 18~30/-
7.67 5.2 7.1
Capillary Tube Capillary Tube Capillary Tube
4,050(145.4),R22 3,800(134),R22 4,680(165),R22
KHF2G4002 KHF2G4001 KHF2G4002
444
450 380 450
2.1 1.73 2.1
10.0/370 7.5/370 10.0/370
Centrifugal Centrifugal Centrifugal
4/164 3/164 4/164
333
1,450/1,150/1,000 1,470/1,240/1,040 1,450/1,150/1,000
---
37/31/27 36/32/27 37/31/27
61/59/57 59/57/55 61/59/57
Thermistor Thermistor Thermistor
9.7 9.7 9.7
13 13 13
4R 12C 4R 10C 4R 12C
1,550/650/292 1,550/650/272 1,550/650/292
63(137) 61(134) 63(137)
142 92 124
Reciprocating Reciprocating Scroll
111
CRN5-0500-PFV AVB5549EXT SR061RAA
Copeland TECUMSEH LG
62,700 48,096 62,000
Condenser Inducted PSC Three Phase Induction Motor
6,270 4,610 5,535
SUNISO 4GDID WITCO LP200T SUNISO 4GSI
1,774 2,000 1,800
Internal Internal Internal
0.375(9.52) 0.375(9.52) 0.375(9.52)
16 17 16
2R22C 2R 44C 2R 44C
90*2 90*2 90*2
AMR071B9 AMR071B9 AMR071B9
666
168*2 168*2 168*2
0.81*2 0.81*2 0.81*2
6.0/370 6.0/370 6.0/370
Propeller Propeller Propeller
2/382 2/382 2/382
Side Discharge Side Discharge Side Discharge
900 900 900
49(1,730)*2 49(1,730)*2 49(1,730)*2
62 62 62
1/2(12.7) 1 / 2 (12.7) 1 / 2 (12.7)
3/4(19.05) 3 / 4 (19.05) 3 / 4 (19.05)
35.43*48.23*14.57(900*1225*370) 35.43*48.23*14.57(900*1225*370) 35.43*48.23*14.57(900*1225*370)
95(209) 95(209) 95(209)
3*8.5 3*8.5 3*8.5
4*0.75 4*0.75 4*0.75
1/2(12.7) 1/2(12.7) 1/2(12.7)
3/4(19.05) 3/4(19.05) 3/4(19.05)
7.5 7.5 7.5
15/12.5 15/12.5 15/12.5
22.22/ 22.22 22.22/
1635/751/378 1635/751/358 1635/751/378
42.1*52.1*19.5(1070*1300*495) 42.1*52.1*19.5(1070*1300*495) 42.1*52.1*19.5(1070*1300*495)
21/44 21/45 21/44
General
Indoor
Outdoor
Outdoor

- 7 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Dimensions
90
400
94 23
94
A
B
C
650
400 90
11
(1) Indoor Unit
Dimension
Capacity
36K BTU/h 1550 1362 236
42K BTU/h 1550 1362 236
48K BTU/h 1550 1362 272
60K BTU/h 1550 1362 292
ABC

- 8 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
(2) Outdoor Unit
H
W
D
H
W
D
(36K) (42K/48K/60K)
MODEL
DIM
W(mm) 870 900 900 900
H(mm) 800 1,220 1,220 1,220
D(mm) 320 370 370 370
36K 42K 48K 60K

- 9 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Refrigeration Cycle Diagram
• COOLING ONLY (LV-C362FLA0, LV-C422FLA0, LV-C482GLA0, LV-C602HLA0,
LV-C48BGLA0, LV-C60BHLA0)
•Rated performance for refrigerant line length of: .7.5m
•If 36K Model is installed at a distance of 15m, 225g of refrigerant should be added (15-7.5)x30g=225g
INDOOR UNIT OUTDOOR UNIT
HEAT
EXCHANGER
(CONDENSER)
HEAT
EXCHANGER
(CONDENSER)
COMPRESSOR
GAS SIDE
LIQUID SIDE
CAPILLARY TUBE
36K 5/8" 3/8" 7.5 15 5 10 30
42K 3/4" 3/8" 7.5 15 5 10 35
48K 3/4" 1/2" 7.5 15 5 10 40
60K 3/4" 1/2" 7.5 15 5 10 45
*Additional
refrigerant
(g/m)
Pipe size(Diameter: ø) Piping length(m) Elevation(m)
MODEL Gas Liquid Rated Max. Rated Max.

- 10 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Wiring Diagram
COOLING ONLY
Model : LV-C362FLA0
Model : LV-C422FLA0 / LV-C482GLA0
OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM
3854A20203Q
TERMINAL BLOCK 30A White Wire NEUTRAL
SOCKET
SOCKET
Ground
BLOWER
MOTOR
White Wire Run Cap.
Brown Wire
STEP
MOTOR
(1)
STEP
MOTOR
(2)
DISPLAY ROOM SENSOR FREEZE SENSOR
LINE Fuse
CL
SWITCH BOX
Red Wire
Red Wire
Red Wire
Black Wire
Blue Wire
Blue Wire
COMM.
HIGH.
MED.
LOW.
Red Wire
1(N)
2(L)
3
TO OUTDOOR UNIT
1TM
1Ø, 220V, 60Hz
POWER SUPPLY
BK
52C L1 L2
T1 T2
A2
A1
BK
BK
OR WH
WH
WH
WH
BL
GN/YL
BK
F1
BK
WH
OR
CM
BK
BL
WH
GN/YL
To the Indoor unit
WH
GN/YL
23
LN
TMo
1(N)
2(L)
3
4
5
Co
OR
OR
YL BK
FMo
BK WH RD
RC
S
Cr
PTCR
1
2
3
4
5
6
7
8
9
Low Ambient PCB
PIPE TH
FUSE T3.15A
TRIAC
OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM
3854A20135S
TERMINAL BLOCK 30A White Wire NEUTRAL
SOCKET
SOCKET
Ground
BLOWER
MOTOR
White Wire Run Cap.
Brown Wire
STEP
MOTOR
(1)
STEP
MOTOR
(2)
DISPLAY ROOM SENSOR FREEZE SENSOR
LINE Fuse
CL
SWITCH BOX
Red Wire
Red Wire
Red Wire
Black Wire
Blue Wire
Blue Wire
COMM.
HIGH.
MED.
LOW.
Red Wire
1(N)
2(L)
3
TO OUTDOOR UNIT
F1
52C(A)
COMP(A)
CS
Tm
1(L) 2(N)
R
POWER SUPPLY
1Ø,220V,60Hz~ FMo
TO INDOOR UNIT
Tmo
F2
OR
RD
RD
BK
WH WH
BR
RD
RD
RD BR BK
OR
1(N) 2(L) 3 4 5
BK OR
BK
YL
Cr(A)
Cr(A)
BK BK BK
WH
WH
WH
WH WH WH
TB1
TB2
FMo
OR BK OR
BK
YL
52C(B)
COMP(B)
CS
R
BL
YL
RD
BK
WH
WH
BK
WH
WH
YL BL WH
Cr(B)
BK
BK
Cr(B)

- 11 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
COOLING ONLY
Model : LV-C602HLA0
COOLING ONLY
Model : LV-C488GLA0
OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM
3854A20013K
TERMINAL BLOCK 30A White Wire NEUTRAL
SOCKET
SOCKET
Ground
BLOWER
MOTOR
White Wire Run Cap.
Brown Wire
STEP
MOTOR
(1)
STEP
MOTOR
(2)
DISPLAY ROOM SENSOR FREEZE SENSOR
LINE Fuse
CL
SWITCH BOX
Red Wire
Red Wire
Red Wire
Black Wire
Blue Wire
Blue Wire
COMM.
HIGH.
MED.
LOW.
Red Wire
1(N)
2(L)
3
TO OUTDOOR UNIT
COMP
1(N)
2(L)
3
4
5
1Ø,60Hz,220V~
POWER SUPPLY
LN 1
2
3
4
5
6
31
32
B
A
WH
OR
BK
YL
FMo1
49FMo FMo2 49FMo
Co
TM 52C
Co
BK YL BK
OR OR
BK
BK RD
Cr
S
RC
WH
WH WH WH
BK
To the indoor unit
BL
WH
PTCR
(OPTION)
GN/YL TMo
F1
BK
BK
WH
GN/YL
OR OR
OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM
3854A20026J
TERMINAL BLOCK 30A White Wire NEUTRAL
SOCKET
SOCKET
Ground
BLOWER
MOTOR
White Wire Run Cap.
Brown Wire
STEP
MOTOR
(1)
STEP
MOTOR
(2)
DISPLAY ROOM SENSOR FREEZE SENSOR
LINE Fuse
CL
SWITCH BOX
Red Wire
Red Wire
Red Wire
Black Wire
Blue Wire
Blue Wire
COMM.
HIGH.
MED.
LOW.
Red Wire
1
2
3
TO OUTDOOR UNIT
POWER
RELAY
BK BK BK
BK
RD
RD
BK
BK
BR
BK
BK
OROR BK
OR BK
FAN
MOTOR FAN MOTOR
COMP.
T1 T2 T3
OR BK
YLYL
WH
CAPACITOR CAPACITOR
TERMINAL
BLOCK
TOTHE INDOOR UNIT
1
2
3
WH
WH RDWH
FUSE
(250V 5A)
FUSE
(250V 5A)
1
2
3
4
5
6
31
32
B
A
3Ø, 3WIRES, 220V
POWER SUPPLY
RSTN
GN/YL

- 12 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
COOLING ONLY
Model : LV-C608HLA0
OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM
3854A20119T
TERMINAL BLOCK 30A White Wire NEUTRAL
SOCKET
SOCKET
Ground
BLOWER
MOTOR
White Wire Run Cap.
Brown Wire
STEP
MOTOR
(1)
STEP
MOTOR
(2)
DISPLAY ROOM SENSOR FREEZE SENSOR
LINE Fuse
CL
SWITCH BOX
Red Wire
Red Wire
Red Wire
Black Wire
Blue Wire
Blue Wire
COMM.
HIGH.
MED.
LOW.
Red Wire
1
2
3
TO OUTDOOR UNIT
RTM
POWER SUPPLY
STN
BK
BK
WH
WH WH
RD
52C
63H2
1
2
3
4
5
6
31
32
B
A
FMo
49FMo FMo 49FMo
YL BK
OR
OR
BK
W
(T3)
U
(T1) V
(T2)
RD
WH
CM
SV
YL BK
OR
BK
BK
RD
Co Co
GN/YL
TMo
To the indoor unit
3
1
2
BK
WH
WH
F1
BK BK
RD
BK
F1

- 13 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Operation Details
(1) The function of main control
1. Time Delay Safety Control
•3min…The compressor is ceased for 3minutes to balance the pressure in the refrigeration cycle.
(Protection of compressor)
•30sec…The 4-way valve is ceased for 30sec. to prevent the refrigerant-gas abnormal noise when the Heating
operation is OFF or switched to the other operation mode while compress is off.
While compressor is running, it takes 3~5 seconds to switch.
2. Airflow Direction Control
•This function is to swing the louver up and down automatically and to set it at the desired position.
•The procedure is as the following.
1st ; Press the ON/OFF Button to operate the product.
2nd ; Press the Airflow Direction Control Button to swing the louver up and down automatically.
3nd ; Repress the Airflow Direction Control Button to set the louver as the desired position.
MODE0
1
2
3
4
5
67
135°
Cooling
MODE
MODE
MODE
MODE
MODE
MODE
MODE 9
MODE
(CLOSE)
3. Cooling Mode Operation
•When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote
controller and the operation diagram is as following
Intake Air temp.
COMP. ON
(SET TEMP.+0.5°C)
COMP. OFF
(SET TEMP. -0.5°C) More than More than
3 minutes 3 minutes
Selecting Selecting Selecting
fan speed fan speed fan speed
COMPRESSOR ON OFF ON OFF ON
INDOOR FAN Low Low

- 14 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
4. Cooling Mode with Sleep Mode Auto Operation
•When selecting the Cooling( ) combined with the Sleep Mode Auto Operation( ), the operation diagram
is as following.
•The setting temperature will be raised by 1°C 30minutes later and by 2°C 1 hour later.
•The operation will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.
5. Auto Operation
Intake Air temp.
COMP. ON
(SET TEMP.+0.5°C)
COMP. OFF
(SET TEMP. -0.5°C) More than More than
3 minutes 3 minutes
INDOOR FAN Low Low Low Low Low
COMPRESSOR ON OFF ON OFF ON
30 minutes 30 minutes
1°C
1°C
Operation Condition Intake-air Temperature Setting temperature Fan speed Air Direction Control
Over 26°C25°C
Over 24°C~below 26°C Intake air -1°C
Over 22°C~below 24°C Intake air -0.5°C
Over 20°C~below 22°C intake air temperture
below 20°C20°C
Over 20°C~below 30°C Fuzzy control
below 20°C20°C
over 30°C30°C
When Auto Operation
initial start
When pressing room temp-
erature setting button
during Auto Operation
Controlled
by Fuzzy logic
In this mode, when
pressing the verti-
cal air diretion con-
trol.
Button, louvers
moves to 1/f
rhythm (refer to
page 15)
Intake-Air temp
Setting Temp. +0.5°C
(Compressor OFF)
Setting Temp.-0.5°C
(Compressor ON)
Indoor Fan
Compressor ON ONOFF OFF
Fuzzy Speed

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Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
•Auto Operation for Soft Dry
The Setting temperature will be same as that of the current intake-air temperature.
- Compressor ON temperature; Setting temperature +1°C
- Compressor OFF temperature; Setting temperature -0.5°C
•1/f rhythm louver operation : In Auto operation mode, when pressing the vertical air direction control button,
louver moves as following cycle.
MODE0
MODE1
MODE2
MODE3
MODE4
MODE5
MODE6 MODE9
(CLOSED)
End
Start
Intake Air temp.
OUTDOOR FAN/COMP.
INDOOR FAN
: Setting fan speed : LOW
Cooling on temp.
(Setting temp.+0.5)
Setting CHAOS Natural wind
Setting temp.
Cooling off temp.
(Setting temp.-0.5)
: CHAOS Natural wind : COMP ON : COMP OFF
GRAPH of Natural wind by the CHAOS logis (During Cooling operation)
6. Natural wind by CHAOS logic
For more fresh feeling than other fan speed mode, press
the indoor fan Speed Selector and set to CHAOS mode.
In this mode, the wind blows like natural breeze by auto-
matically changing fan speed according to the CHAOS
logic.

- 16 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
INDOOR FAN Low Fan Low Fan
Intake Air temp.
Setting temp. +1.0˚C
(Compressor ON)
Setting temp. -0.5˚C
(Compressor OFF)
Setting temp.
2min.58sec. 2min.58sec. 10min. 10min.7min. Within 7min.
CoolingCooling
OUTDOOR FAN
COMPRESSOR
Selected
Fan Selected Fan
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
7. Soft Dry Operation
•During Soft Dry Operation, the compressor ON temperature is the setting temperature plus 1°C, the compres-
sor OFF temperature is the setting temperature minus 0.5°C.
•When the room temperature rises over the compressor ON temperature, the operation mode is switched to the
cooling mode.
•When the room temperature falls between the compressor ON temperature and OFF temperature, the opera-
tion mode is switched to the Soft Dry Operation.
In this temperature range, 10min. Dry Operation, 7min operation OFF. During 10min Dry operation, if the room
temperature falls below compressor OFF temperature, Compressor OFF.
•In micom dehumidify mode, control of fan speed is as following.
8. Protection of the evaporator pipe from frosting
If the temperature of the indoor coil is below 0°C after 7 minutes from starting the compressor, the
compressor and the outdoor fan is stopped, and then after 3 minute delay of the compressor and the
temperature of the indoor coil is over 7°C, the compressor and the outdoor fan is reoperated.
Indoor fan operates at low speed (comp. OFF) or at selected speed (comp. ON)
9. Test Operation
•When pressing forced operation switch about 3 seconds, the unit operates in cooling mode at high speed fan
regardless of room temperature and resets in 18 min.
•During test operation, if remote controller signal is received, the unit operates as remote controller sets.
10. Auto Restarting Operation
•When the power is restored after a sudden power failure while in appliance operation, the mode before the
power failure is kept on the memory and the appliance should be on the automatically operates in the mode
on the memory.
•Operation Mode that is kept on the memory
- State of Operation ON/OFF
- Operation Mode/Setting Temp/Selected airflow Speed
- Sleep Timer Mode/Remaining Time of Sleep Timer(unit of hour)
•If no input by the remote controller or no switching of the slide switch within 7 hr after the appliance operates
by the Auto Restarting operation, the appliance is forced to stop at the moment of 7-hr elapse.

- 17 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Note)
For normal operation after checking by test mode, you should press SW1 nine times for resetting or reconnect
the power cord.
•Coolling, Soft Dry, Fan, Heating
•Timer Mode
•Sleep Mode
•Outdoor Unit Operating
Operation Indicator
Timer Indicator
Sleep Timer Indicator
Outdoor Unit Operation
Cooling Model
Display Function

- 18 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Installation of Indoor, Outdoor Unit
1. Selection of the best location
1) 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.
•A place where air circulation in the room will be
good.
•A place where drainage can be easily obtained.
•A place where noise prevention is taken into consid-
eration.
•Do not install the unit near the door way.
•Ensure the spaces indicated by arrows from the
wall, ceiling, or other obstacles.
2) Outdoor unit
•If an awning is built over the unit to prevent direct
sunlight or rain exposure, be careful that heat radi-
ation from the condenser is not restricted.
•There should not be any animals or plants which
could be affected by hot air discharged.
•Ensure the spaces indicated by arrows from the
wall, ceiling, fence or other obstacles.
3) Piping length and the elevation
•If 36K Model is installed at a distance of 15m, 225g of
refrigerant should be added (15-7.5) x 30g = 225g
•Capacity is based on standard length and maximun
allowance length is on the basis of reliability.
•Improper refrigerant charge may result in abnormal cycle.
Indoor unit
Outdoor unit
B
A
More than
30cm
More than
30cm
More than
70cm
Sunroof
Fence or
obstacles
300
mm
300
mm
300
mm
300
mm
100mm
or more
300mm
or more
Service space when the unit is mounted
under the celling.
Service space when the unit is mounted
on the floor/wall.
36K BTU/h
42K BTU/h
48K BTU/h
60K BTU/h
30
35
40
45
Capacity
Gas
5/8"
3/4"
3/4"
3/4"
Liquid
3/8"
3/8"
1/2"
1/2"
Elevation B(m)
Length A(m)
*Additional
refrigerant
(g/m)
Pipe Size
(Diameter: Ø)Standard
7.5
7.5
7.5
7.5
Standard
5
5
5
5
Max.
15
15
15
15
Max.
10
10
10
10

- 19 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
2. Indoor unit installation
■Installation of Unit
Unit should be installed for horizontal and verti-
cal discharge application only.
•Apply a joint-canvas between the unit and duct to
absorb unnecessary vibration.
•Install the unit leaning to a drainage hole side as
a figure for easy water drainage.
•A place where the unit will be leveled and that
can support the weight of the unit.
•A place where the unit can withstand its vibration.
•A place where service can be easily performed.
CASE 1
POSITION OF SUSPENSION BOLT
CASE 2
POSITION OF CONSOLE BOLT
(Unit:mm)
90
400
94 23
94
A
650
400 90
B
C
11
Suspension
bolts
Spring
washer
Max.
12mm Washer
Nut
ABC
Dimension
Capacity
36K BTU/h 1550 1362 236
42K BTU/h 1550 1362 236
48K BTU/h 1550 1362 272
60K BTU/h 1550 1362 292

- 20 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
•Select and mark the position for fixing bolts.
•Drill the hole for set anchor on the face of ceiling.
•Insert the set anchor and washer onto the sus-
pension bolts for locking the suspension bolts on
the ceiling.
•Mount the suspension bolts to the set anchor
firmly.
•Secure the installation plates onto the suspension
bolts (adjust level roughly) using nuts, washers
and spring washers.
Opening the side panel method
Step1: Remove screw
Step2: Lift side-panel upward slightly
Step3: To move side panel along arrow as shown.
1 Set anchor
Old building
Step1
Step2 Step3
New building
2 Plate washer
3 Spring washer
4 Nut
5 Suspension
bolts
Tighten the nut and bolt to prevent unit falling
CAUTION
•Local supply
Set anchor
Plate washer - M10
Spring washer - M10
Nut - W3/8 or M10
Suspension bolt - W3/8 or M10