LG LS-J0761NL Manuale utente
Room Air Conditioner
SVC MANUAL(Exploded View)
MODEL : LS-J0761NL/NM/NN
LS-J0962NL/NM/NN/YL
LS-L1261NL/NM/NN
LS-K1860NL/NM/NN/YL
LS-K1861YL
LS-K18612L
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 Specification (Cooling & Heating)...........................................................................6
Dimensions..............................................................................................................................7
Refrigeration Cycle Diagram..................................................................................................9
Wiring Diagram......................................................................................................................10
Operation Details ..................................................................................................................12
Installation .............................................................................................................................27
Operation ...............................................................................................................................41
Disassembly of the parts (Indoor Unit) ...............................................................................43
2-way, 3-way Valve.................................................................................................................46
Cycle Troubleshooting Guide...............................................................................................53
Self-diagnosis function.........................................................................................................54
Electronic Parts Troubleshooting Guide.............................................................................56
Electronic Control Device.....................................................................................................67
Schematic Diagram ...............................................................................................................73
Exploded View ......................................................................................................................78
- 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)
• Pipe temperature sensor. (Thermistor)
• Maintain the room temperature in accordance with the Setting Temp.
• Indoor fan is delayed for 5 sec at the starting.
• Restarting is for approx. 2 minutes.
• Super High, High, Med, Low
--- Lights up in operation
--- Lights up in Sleep Mode
--- Lights up in Timer Mode
--- Lights up in Defrost Mode (for Heating Model)
• Intermittent operation of fan at low speed.
• The fan is switched to low(Cooling), low(Heating) 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.
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting the Current Control
Time Delay Safety Control
Indoor Fan Speed Control
Operation indication Lamps (LED)
Soft Dry Operation Mode
• Both the indoor and outdoor fan stops
during defrosting.
• The indoor fan stops until the
evaporator pipe temperature will be
reached at 30°C.
Sleep Mode Auto Control
Natural Air Control by CHAOS Logic
Airflow Direction Control
Defrost(Deice) control (Heating)
Hot-start Control (Heating)
- 4 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
• If power is on, it will operate to chage capacitor (330µF/450WV) on controller and power relay will oper-
ate after about 2~5sec.
• If outdoor temp. is below 0°C, preheater is operating for 1~5min.
• At the initial, It will be operated compressor after 1min. for preheating.
• The active power filter is designed to correct power factor(cos θ) and to regulate DC link voltage.
• It will be operated PFC circuit when the compressor freq. is over 12Hz.
• If DC link voltage is not over DC 350V in 6 sec. in case of PFC on, it does not operating of compressor.
• The final operating freq. of comp. is set the lowest freq. that limited outdoor temp., discharge pipe temp.,
heat-sink temp., target freq., owing to CT.
• When the temp. of power module increases to 85°C, controller decreases Freq. of Comp.
• It will be changed the drive freq. of comp. according to temp. of indoor and outdoor.
• It will be changed the drive voltage of comp. according to operating frequency.
• It is only operated in the heating operation mode except defrosting operation.
• High speed
- Although fan motor speed is low, it will change high speed in case of below AC193V, over 45°C of out-
door temp., and over fc, fh of comp. Freq.
• Low speed
- Nomal mode and over AC270V
Outdoor Unit
Power relay control
Stand by control at low temp.
Active power filter control(PFC)
Comp. Freq. control
Overheatng. Protection(Power module)
Freq. speed control(up/down speed)
V/F control
Total current control (over current protection)
DC peak current control
4 way valve control
Outdoor fan motor control
Discharge pipe temp. control
- 5 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Healthy Dehumidification Operation Mode.
( )
Remote Controller
Operation ON/OFF
Reset
Operation Mode Selection
Temperature Setting
Timer Selection
Timer Setting
Jet Cool
Timer Cancel
Sleep Operation
Airflow Direction Control
(Heating
model only)
TEMPERATURE LOW HIGH
Cooling Operation Mode.( )
Heating Operation Mode.( )
Auto Operation Mode.( )
Fan Operation Mode
Room, Temperature Display
Setting the Time or Timer
ON OFF
SET
CANCEL
Fan Speed Selection
(Low) (Med) (High) (CHAOS)
: (High: 30°C LOW : 18°C)
Down to 18°C
Up to 30°C
Cooling
: OFF, ON, OFF ON
: Cancel Sleep Mode, Timer ON or Timer OFF
: 1, 2, 3, 4, 5, 6, 7, Off Timer
: Fan Operates without cooling or heating.
Down to 16°C
Up to 30°C
Heating
- 6 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
18K Series
LS-K1861YL
LS-K1860NL/YL
LS-K181N-1
LS-K18612L
7K Series 9K Series 12K Series
Cooling Capacity Btu/h
Heating Capacity
Moisture Removal l/h
Power Source Ø, V, Hz
Air Circulation Indoor m3/min
Outdoor
Noise Level Indoor dB (A)±3
Outdoor
Input Cooling W
Heating
Running Cooling A
Current Heating
Motor Output Indoor W
Outdoor
Dimensions Indoor mm
(W x H x D) Outdoor
Net. Weight Indoor kg
Outdoor
Refrigerant (R22) g
Airflow Direction Control (Up & Down)
Remocon Type
Service Valve Liquid inch(mm)
Gas
Sleeping Operation
Drain Hose
Connecting Cable mm
2
Power Cord mm
2
at 230V at 230V at 230V at 230V
7,000(4,700-8,300) 9,000(5,200-9,700) 12,000(7,500-13,200) 18,000(11,000-19,800) 17,500(11,000-19,800)
9,000(5,000-10,000) 11,250(4,600-12,500) 14,400(8,300-15,900) 27,700(12,800-22,770) 19,700(12,800-22,770)
1 1.1 1.3 2.5
1Ø, 220-240V, 50Hz
5.6 6.5 8.6 12
25 25 25 42
33 36 39 42
50 50 51 56
740 1,070 1,280 2,000
980 1,300 1,580 2,200
3.3 4.8 5.8 9.0
4.4 6 7 9.5
7.5 7.5 13 20
35.8 35.8 35.8 62
802*262*165 802*262*165 888*287*170 1,080*314*181
801*555*262 870*655*320
779 15
33 35 41 54
530 650 980 1,250
O
L.C.D Wireless
1/4''(6.35) 1/4''(6.35)
3/8''(9.52) 1/2''(12.7)
O
O
1 1.5 2.5
1 1.5 2.5
Product Specifications (Cooling & Heating)
Model Name
UnitItem
- 7 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Dimensions
(1) Indoor Unit
Tubing hole cover
D
H
W
Installation plate
Tubing hole cover
Installation plate
Right rear piping
Left rear piping
ø70mm ø70mm
50mm
20mm
20mm
80mm
ø70mm
A
A
AA
Center
Right rear pipingLeft rear piping
Center
ø70mm
Tubing hole cover
Tubing hole cover
Installation plate
"D" "C"
Right rear pipingLeft rear piping
Hole center ø70mm
MODEL
DIM Unit
W mm 802 888 1,080
H mm 262 287 314
D mm 165 170 181
7k, 9k Btu Series 12k Btu Series 18k Btu Series
(7k, 9k, 12k, 18k )
( 7k, 9k ) ( 12k ) ( 18k )
( 7k, 9k ) ( 12k ) ( 18k )
- 8 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
(2) Outdoor Unit
W
D
L1
L2
H
L3
L4
L5L6 L7 L8
L9 L10
Liquid side
2-way valve
Gas side
3-way valve
MODEL 7k, 9k, 12k Btu/h Series 18k Btu/h Series
DIM unit
W mm 801 870
H mm 555 655
D mm 262 320
L1 mm 339 370
L2 mm 37 25
L3 mm 543.6 630
L4 mm 11.4 25
L5 mm 591 546
L6 mm 105 162
L7 mm 105 162
L8 mm 72.5 54
L9 mm 86.4 79
L10 mm 77 74.5
Pipe size(Diameter:Ø)MAX. Max
MODEL Piping length Elevation
Gas(inch) Liquid(inch) (m) (m)
Refrigeration Cycle Diagram
- 9 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
INDOOR UNIT OUTDOOR UNIT
HEAT
EXCHANGE
(EVAPORATOR)
HEAT
EXCHANGE
(CONDENSER)
COMPRESSOR
ACCUMU
LATOR
GAS SIDE
3-WAY VALVE
LIQUID SIDE
2-WAY VALVE
CAPILLARY TUBE
COOLING
HEATING
REVERSING
VALVE
(Heating Model Only)
7k, 9k Btu SERIES 3/8" 1/4" 15 7
12k Btu SERIES 1/2" 1/4" 15 7
18k Btu SERIES 1/2" 1/4" 30 15
- 10 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Wiring Diagram
SW01FCN-TH1
FUSE 2A,250V
P/NO:3854A90014E
RY-POWER
BK
SW01FCN-TH1
FUSE 2A, T250V
P/NO:3854A20080P
RY-POWER
BK
RD
BK BK
LIMIT
S/W
CN-L/R
STEP
MOTOR
H.V.B A/CL
OPTION
BK BK
BK BK
CN-MOTOR
CN-OUT
CN-DATA
SW01FCN-TH1
FUSE 2A,250V
P/NO:3854A20080A
RY-POWER
BK
CN-DISP1
DISPLAY PCB ASM
BR
BR
BL
BL
RD
RD
GN/YLGN/YL
TERMINAL
BLOCK
1
(
L
)
2
(
N
)
3
(1) Indoor Unit
LS-_NL Series (7, 9, 12K Btu) LS-_NM/NN Series (7, 9, 12K Btu)
LS-_NL/NM/NN Series (18K Btu)
LS-K18612L
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