LG LS-L1220HL Service Manual Download Page 59 | Manualshive

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Schematic Diagram

PK

BL

YL

RD

OR

Option

(LEFT/RIGHT)

STEPPING MOTOR

ION

Option

22

1

1

CN-ION

HVB OUT

Frequency

3

2

1

5V

3

2

1

CN-HVB

FAN

MOTOR

OUTDOOR

5V

1%

R02H

12.1K

3

4

2

CN-TH1

2

4

3

PIPE-TH

ROOM-TH

FAN

MOTOR

SH-CAPACITOR

INDOOR

TRIAC T2

NF01J

85uH/1.8A

3

2

1

CN-MOTOR

3

2

1

1

1

PKM13EPP-4002

BZ01E

R01E

1K

KID65004AF

1

8

CN-L/R

16

RY-4WAY

12V

9

IC02M

R02E,20

KTC3198-Y

R02C,20K

CST-8.00MTW

153J

C02C

OSC01B

Q01C

receiver

R03C

20K

45

R01B,1M

INT0

INT1

X1

X2

Vss1

41

40

44

43

42

C01L 680pF

50

R01L

5.1K

49

50V

47

46

48

R02L,1K

5V

6
7

3

2

11

10

3

2

4

5

RY-FAN

4

5

1

14

13

12

5

6

7

1

2

4

3

56

62

59

57
58

61

60

52

54

53

B

55

Z

4

Vss0

7

6

9

8

5

63

64

1

3

2

8

9

51

15

IC01A

KIA7036P

KSC7536

10K

R05H

1

5V

2

3.6V

3

R04H

1%

6.2K

5V

5V

33

31.

32

RESET

AVdd

AVref

37

38

35

34

36

R23H

R22H

C01A

25V

0.01

R02A,20K

TRACIS

SM1L43

120

R01J

NF01J

100 1/2W

TRIAC G

5V

R02J

85uH/1.8A

R11H~R16H

1%

12.1K

T1

TR01

0.1

C02J

OR4H

F2

OR2H

Low

O/L

OR3H

F1

OR1H

R21H

R26H

R25H

R24H

25

s

19

22

24

23

s

1

20

21

A

V

d

A

V

d

26

29

27

28

5V

S

8

Vcc

5V

16

17

18

1

11

12

14

15

13

Hi

OR6H

Frequency

Q

Vss

ST93C46CB6

EEPROM

93C46B

OJ3H

OJ1H

OJ2H

OJ4H

D

C

5

6

7

ORG

DU

2

4

3

Med

OR5H

30

5V

Vdd0

10

39

ZNR02J

SVC561D-14A

R04C,10K

HVB OUT

12V

12V

2

3

1

4

5

COMPRESSOR

2

1

50/60Hz

AC220~240V

2

1

CN-TAB2

1

1

3

4

CN-TAB1

1

1

AC275V

C01J

0.1

POWER TRANS

D03D

D02D

9

7

1

3

1000

35V

C01D

D01D

C02D

50V

+

0.1

I

D05D

7805

IC02D

I

1000

C03D

16V

+

50V

0.01

C04D

12V

O

7812

IC01D

1SR139-400

D01D~D05D

1N4004

D04D

SVC561D-14A

G4A-1A-E

RY-COMP

ZNR01J

FUSE

250V/T2A

1/2W

AC275V

IC01J TLP762JF

5

4

12V

R03J

560

R04J

2

1

3

CN-U/D

3

2

3

2

5

5

4

4

TRIAC T2

TRIAC G

680 1/2W

R01G~R04G

220

13

4

10

11

12

7

5

6

16

9

1

8

IC01M

14

15

3

2

10V

220

C02L

3

2

1

1

2

3

receiver

CN-MAIN1

7

6

5

4

4

5

6

7

1

1

(UP/DOWN)

STEPPING MOTOR

Vout

Vcc

GND

Operation

CMP

Timer

Sleep

RECEIVER

LED1

YL

LED4

LED2

LED3

OR

RD

PK

BL

5V

20K

R11H~R14H

R02F

20K

R04F

20K

4

3

1

2

SW01F

20K

R06F

5V

FORCED OPERATION

AUTO RESTART

REMOTE CONTROL

Option

10V

220

C05D

+

O

5V

CN-SW

33

2

1

2

1

LIMIT

SWITCH

NO

NC

COM

C06D

50V

0.01

R12H

R11H

R14H

R13H

HVB OUT

KID65004AF

KID65004AF

IC01G

RY-COMP

12V

-59-

Cooling Only Series

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Summary of Contents for LS-L1220HL

Page 1: ...SAFETY PRECAUTIONS IN THIS MANUAL ONLY FOR AUTHORIZED SERVICE PERSONNEL MODEL LS L1261CL CM CN CD CS LS L1262CL CM CN CD CS LS L1263DL LS L1261EL HL HM HN HD HS LS L1262HL HM HN HD HS LS L1220HL HM HN HD HS website http biz LGservice com e mail http www LGEservice com techsup html ...

Page 2: ... Details 10 Display Function 17 Self diagnosis Function 17 Installation 18 Operation 34 Disassembly of the parts Indoor Unit 36 2 way 3 way Valve 42 Cycle Troubleshooting Guide 49 Electronic Parts Troubleshooting Guide 50 Electronic Control Device 57 Schematic Diagram 59 Exploded View and Replacement Parts List 61 2 ...

Page 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 Current Control Time Delay Safety Control Indoor Fan Speed Control Ope...

Page 4: ...ooling Operation Mode Heating Operation Mode Auto Operation Mode Fan Operation Mode Horizontal Airflow Direction Control Button Option Room Temperature Display Setting the Time or Timer PLASMA Option NEGATIVE ION Option ON OFF SET PLASMA CANCEL Fan Speed Selection Low Med High CHAOS High 39 C Low 11 C OFF ON OFF ON Cancel Sleep Mode Timer ON or Timer OFF 1 2 3 4 5 6 7 Off Timer Fan Operates withou...

Page 5: ...C O P Heating 3 31 3 19 13 26 888 x 287 x 170 770 x 540 x 245 9 34 35 Refrigerant R22 kg 0 73 0 81 0 84 Airflow Direction Control Up Down O Remocon Type L C D Wireless inch mm 1 4 6 35 1 2 12 7 Sleeping Operation O Drain Hose O Connecting Cable 1 0mm2 Power Cord 1 0mm2 Air Circulation Noise Level Input m3 min dB A 3 Indoor Outdoor Indoor Outdoor Indoor Outdoor Indoor Outdoor Indoor Outdoor Liquid ...

Page 6: ... 6 Installation plate D H W MODEL DIM Unit W mm 888 H mm 287 D mm 170 12K Btu Series Dimensions 1 Indoor Unit ...

Page 7: ... 7 2 Outdoor Unit W L2 L3 L1 D H L4 L5 Gas side 3 way valve Liquid side 2 way valve MODEL 12K Btu Series DIM unit W mm 770 H mm 540 D mm 245 L1 mm 287 L2 mm 64 L3 mm 518 L4 mm 10 L5 mm 100 ...

Page 8: ...as inch Liquid inch m m 1 2 1 4 15 7 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 CHECK VALVE Heating Model only COOLING HEATING REVERSING VALVE Heating Model Only 12K Btu SERIES ...

Page 9: ...H CAPA BL BR GN YL BR YL OR BK CN TAB1 CN MOTOR CN TAB2 CN 4WAY RY COMP RY 4WAY RY FAN ZNR THERMISTOR FORCED OPERATION AUTO RESTART REMOTE CONTROL MOTOR MAIN PCB ASM DISPLAY PCB ASM POWER TO OUTDOOR UNIT PILLAR TERMINAL BR BL BK RD GN YL BR BL BK RD GN YL 1 L 2 N 3 4 3 4 BL BR CN U D STEP MOTOR OPTION BK BK BK BK LIMIT S W H V B A CL RD BK BK COMP C S R FAN MOTOR OLP BR BR RD BL BR RD BL BL GN YL ...

Page 10: ...r On while in timer mode on off off when timer mode is completed or canceled Defrost Indicator Off except when hot start during heating mode operation or while in defrost control Cooling Mode Operation When the intake air temperature reaches 0 5 C below the setting temp the compressor and the outdoor fan stop When it reaches 0 5 C above the setting temp they start to operate again Compressor ON Te...

Page 11: ...rry out defrost control or not and the time of defrost control are determined according to the following conditions 1 While in heating mode operation the maximum of the indoor pipe temperature is measured and it is com pared with the present indoor pipe temperature to get the difference of the indoor pipe temperatures the maximum temperature of indoor pipe the present temperature of indoor pipe ac...

Page 12: ...oor fan is operated for 15 seconds Then an operation mode is selected according to the intake air temp at that moment as follows 24 C Inatake Air Temp Fuzzy Operation for Cooling 21 C Inatake Air Temp 24 C Fuzzy Operation for Dehumidification Inatake Air Temp 21 C Fuzzy Operation for Heating If any of the operation modes among cooling dehumidification heating mode operations is carried out for 10 ...

Page 13: ...d by Fuzzy rule when the intake air temp is 3 C or more above the setting temp the compressor is turned off When below the setting temp the compressor is turned on Compressor ON Temp Setting Temp Compressor OFF Temp Setting Temp 3 C At the beginning of Fuzzy mode operation the setting temperature is automatically selected according to the intake air temp at that time 20 C Intake Air Temp Intake Ai...

Page 14: ... cannot be input While in cooling mode operation 30 min later since the start of the sleep timer the setting temperature increases by 1 C After another 30 min elapse it increases by 1 C again When the sleep timer mode is input while in cooling cycle mode the airflow speed of the indoor fan is set to the low When the sleep timer mode is input while in heating cycle mode the airflow speed of the ind...

Page 15: ...d after a sudden power failure while in appliance operation the mode before the power failure is kept on the memory and the appliance automatically operates in the mode on the memory The slide switch on the main unit of the appliance should be on the Auto Restarting position in order that the Auto Restarting operation is available Operation Mode that is kept on the memory State of Operation ON OFF...

Page 16: ...ted by the slide switch on the main unit the appliance operates according to the input by the remote control Protection of the evaporator pipe from frosting If the indoor pipe temp is below 0 C in 7 min after the compressor operates without any pause while in cool ing cycle operation mode the compressor and the outdoor fan are turned off in order to protect the indoor evaporator pipe from frosting...

Page 17: ...temperature sensor is open or is shorted the error is indicated To indicate the error the operation LED or the cooling LED flashed at 3 sec interval When the error is cleared the LED stops flashing the operation or cooling LED is on While in appliance pause the error is not indicated Operation Indicator Timer Indicator Sleep Timer Indicator Defrost Indicator 17 Operation Indicator Timer Indicator ...

Page 18: ...btained A place where noise prevention is taken into con sideration Do not install the unit near the door way Ensure the spaces indicated by arrows from the wall ceiling fence or other obstacles If an awning is built over the unit to prevent direct sunlight or rain exposure be careful that heat radiation from the condenser is not restricted There should not be any animals or plants which could be ...

Page 19: ...it on the concrete wall consider using anchor bolts Always mount the Installation plate horizontally by aligning the marking off line by means of the thread and a level 2 Drill the piping hole with 70mm dia holecore drill Line according to the arrows marked on lower the left and the right side of the Installation Plate The meeting point of the extended line is the cen ter of the hole Drill the Pip...

Page 20: ...or unit onto the copper pipes When the flare nuts are removed from the indoor unit Some gas may leak as some gas is charged to prevent the inside of the pipe from rusting Fit the copper pipe end into the Bar of flare tool about 0 1 0mm higher See illustration Flare the pipe ends 4 Tape the flaring portion to protect it from the dust or damages 90 Slanted Rough Pipe cutter Pipe Reamer Point down A ...

Page 21: ... 2 Connection of Pipings 1 Remove the tubing holder 2 Route the drain hose and the indoor tubing For right rear piping 3 Insert the piping the connecting cables and the drain pipe through the piping hole on the wall 4 Connect the piping and the indoor tubing and drain hose and drain pipe Don t connect the cable to the indoor unit Wrap the insulation material around the connect ing portion Glue up ...

Page 22: ...n necting cable with tape 7 Indoor unit installation Hook the indoor unit onto the upper portion of the installation plate Engage the two hooks of the rear top of the indoor unit with the upper edge of the installation plate Ensure the hooks are properly seated on the installation plate by moving it in left and right CAUTION Take care to arrange the piping drain hose and cables as the feature 7 pa...

Page 23: ...ose For left rear piping 3 Insert the connecting cables the drain pipe and connecting piping through the piping hole on the wall 4 Connect the piping and the indoor tubing and drain hose and drain pipe and place the drain pipe into the chassis Don t connect the cable to the indoor unit Make a small loop for easy connection later Glue up the connection portion of drain hose and drain pipe 5 Bend th...

Page 24: ...7 Wrap the tubing the drain hose and the connect ing cable with tape 8 Indoor unit installation Hook the indoor unit onto the upper portion of installation plate Engage the two hooks of the rear top of the indoor unit with the upper edge of the installation plate Ensure the hooks are properly seated on the installation plate by moving it left and right CAUTION Take care to arrange the piping drain...

Page 25: ...come loose from vibrations to which the unit is subjected during the course of transportation Check them and make sure that they are all tightly fastened If they are loose it could give rise to burn out of the wires 4 Specification of power source 5 Confirm that electrical capacity is sufficient 6 See to it that the starting voltage is maintained at more than 90 percent of the rated voltage marked...

Page 26: ...s on the indoor unit Terminals on the indoor unit 1 L 1 L 1 L 2 N 2 N 2 N 3 4 3 4 2 N BROWN BLUE G Y BLACK RED BROWN BLUE G Y RED BROWN BROWN BLUE BLACK BLACK G Y RED RED G Y BLUE BROWN BLUE GREEN YELLOW BROWN BLUE GREEN YELLOW 1 Cooling only type 2 Cooling Heating type The power cord connected to the indoor unit should be complied with the following specifications Type H05VV F approved by HAR or ...

Page 27: ... the securing screws To remove the Grille pull lower the left and right side of the grille toward you slightly tilted and lift it straight upward Two tabs on the top inside edge of chassis are clear of their slots 2 Check the drainage Pour a glass of water on the evaporator Ensure if water flows drain hose of indoor unit without any leakage 4 Checking the Drainage and Connecting the cable to Indoo...

Page 28: ...nd engage two tabs on the top inside edge of the grille with two slots on the cabinet s top front edge Press the Grille toward to the cabinet until it will be back into place 1 L Terminals on the outdoor unit Terminals on the outdoor unit Terminals on the indoor unit Terminals on the indoor unit 1 L 1 L 1 L 2 N 2 N 2 N 3 4 3 4 2 N BROWN BLUE G Y BLACK RED BROWN BLUE G Y RED BROWN BROWN BLUE BLACK ...

Page 29: ...t dip it into water and fix it on the wall to avoid swinging in the wind 2 Tape the Piping drain hose and Connecting Cable from down to up 3 Form the piping gathered by taping along the exterior wall and fix it onto the wall by saddle or equivalent 2 Tape the Pipings and Connecting cable from down to up 3 Form the pipings gathered by taping along the exterior wall make the Trap to be required to p...

Page 30: ... minute 7 Set both liquid and gas side valves to open position with the Hexagonal wrench for the unit operation 5 Air Purging of the Piping and Indoor Unit 1 Air purging The air remaining which contains moisture in the refrigeration cycle may cause a malfunction on the compressor 1 Remove the caps from the 2 way and 3 way valves 2 Remove the service port cap from the 3 way valve 3 To open the valv...

Page 31: ...that of measured at first time Liquid side Gas side CLOSE CLOSE Indoor unit Outdoor unit Closed Closed NOTE The additional gas for air purping has been charged in the outdoor unit However if the flare connections have not been done correctly and there gas leaks a gas cylinder and the charge set will be needed CAUTION Do not leak the gas in the air during air purging Use vaccum pump as far as possi...

Page 32: ... length and maximum allowance length is the basis of reliability Oil trap should be installed per 5 7 meters Numerical value in is for Rotary Comp model CAUTION In case more than 5m Max Piping Length Ⓐ m Model 15 7 7 5 20 15 7 5 20 Max Elevation Ⓑ m Standard Length m Additional Refrig erant g m LS L1261CL HL LS L1262CL HL LS L1220HL ...

Page 33: ...Measure the temperature of the intake and dis charge air 2 Ensure the difference between the intake tem perature and the discharge one is more than 8 C Cooling or reversely Heating 1 Connection of power supply 1 Connect the power supply cord to the inde pendent power supply Circuitbreaker is required 2 Prepare the remote controller Remove the battery cover from the remote controller according to t...

Page 34: ...p down airflow direction ON OFF TIMER BUTTONS Used to set the time of starting and stopping operation TIME SETTING BUTTONS Used to adjust the time TIMER SET CANCEL BUTTONS Used to set the timer when the desired time is obtained and to cancel the Timer operation SLEEP MODE AUTO BUTTON Used to set Sleep Mode Auto operation AIR CIRCULATION BUTTON Used to circulate the room air without cooling or heat...

Page 35: ...UTTON Used to stop or start louver movement and set the desired up down airflow direction ON OFF TIMER BUTTONS Used to set the time of starting and stopping operation TIME SETTING BUTTONS Used to adjust the time TIMER SET CANCEL BUTTONS Used to set the timer when the desired time is obtained and to cancel the Timer operation SLEEP MODE AUTO BUTTON Used to set Sleep Mode Auto operation AIR CIRCULAT...

Page 36: ... to open position horizontally by finger pressure Remove the securing screws 9K Btu models 2EA To remove the Grille pull the lower left and right side of the grille toward you slightly tilted and lift it straight upward 1 To remove the sensor housing connect earth conductor step motor conductor with sensor holder Motor Evaporator P C B Power Conductor Step Motor Conductor Earth Conductor Motor Con...

Page 37: ... out from the chassis carefully 3 To remove the Discharge Grille Unhook the discharge grille and pull the discharge grille out from the chassis carefully 4 To remove the Evaporator Remove 3 screws securing the evaporator at the left 2EA in the Eva Holder at the right 1EA 37 ...

Page 38: ... tab is clear of the slot 5 To remove the Cross Flow Fan Loosen the screw securing the cross flow fan to the fan motor do not remove Lift up the right side of the cross flow fan and the fan motor separate the fan motor from the cross flow fan Remove the left end of the cross flow fan from the self aligning bearing 38 ...

Page 39: ...de of the grille toward you slightly tilted and lift it straight upward To remove the Grille from the Chassis Remove the cover control from the grille Separate the black lead wire from the white connector Remove screws secured 3 EA Pull the grille out from the chassis carefully 1 To remove the sensor housing connect earth conductor step motor conductor with sensor holder Motor Evaporator P C B LS ...

Page 40: ... 3 To remove the Discharge Grille Remove the securing screw Pressing the right side of the discharge grille downward slightly unhook the discharge grille Pull the discharge grille out from the chassis carefully 4 To remove the Evaporator Remove 3 screws securing the evaporator at the left 1EA at the right 2EA ...

Page 41: ...the tab is clear of the slot 5 To remove the Cross Flow Fan Loosen the screw securing the cross flow fan to the fan motor do not remove Lift up the right side of the cross flow fan and the fan motor separate the fan motor from the cross flow fan Remove the left end of the cross flow fan from the self aligning bearing ...

Page 42: ... gauge Open Open Open with charging cylinder Open Open Open with charging cylinder Open Open Open Open Works Shipping Air purging Installation Operation Pumping down Transfering Evacuation Servicing Gas charging Servicing Pressure check Servicing Gas releasing Servicing 1 2 3 4 5 6 Valve cap Open position Closed position Pin Service port Service port cap To outdoor unit Flare nut To piping connect...

Page 43: ...hexagonal wrench to press the valve core pin discharge for three seconds and then wait for one minute Repeat this three times 5 Use torque wrench to tighten the service port nut to a torque of 1 8kg cm 6 Set the 3 way valve to the back seat 7 Mount the valve stem nuts to the 2 way and 3 way valves 8 Check for gas leakage At this time especially check for gas leakage from the 2 way and 3 way valve ...

Page 44: ...e hose Open the low pressure valve on the charge set slightly to air purge from the charge hose 5 Set the 2 way valve to the closed position 6 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 1kg cm2 g 7 Immediately set the 3 way valve to the closed position Do this quickly so that the gauge ends up indicating 3 to 5kg cm2 g 8 Disconnect the charge set and moun...

Page 45: ...t on the 2 way valve 4 Check for gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the gas cylinder and discharge the refrigerant until the gauge indicates 3 to 5 kg cm2 g 6 Disconnect the charge set and the gas cylinder and set the 2 way and 3 way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems 7 Mount t...

Page 46: ...t and discharge the refrigerant until the gauge indicates 0 kg cm2 G If there is no air in the refrigerant cycle the pressure when the air conditioner is not running is higher than 1 kg cm2 G discharge the refrigerant until the gauge indicates 0 5 to 1 kg cm2 G if this is the case it will not be necessary to apply a evacuatin Discharge the refrigerant gradually if it is discharged too suddenly the...

Page 47: ...or less 3 Close the valve Lo side on the charge set turn off the vacuum pump and confirm that the gauge needle does not move approxima tely 5 minutes after turning off the vacuum pump 4 Disconnect the charge hose from the vacuum pump Vacuum pump oil If the vacuum pump oil becomes dirty or depleted replenish as needed Lo Open Open Vacuum pump 2 Way valve Outdoor unit Liquid side Indoor unit Gas sid...

Page 48: ...150g each time while operating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the procedure pumping down pin 4 Immediately disconnect the charge hose from the 3 way valve s service port Stopping partway will allow the gas to be discharged If the system has been charged with liquid refrigerant while operating the air condition...

Page 49: ...m air humidity When the room air humidity is relativery higher temperature difference is smaller When the room air humidity is relatively lower temperature difference is larger 2 Check temperature and pressure of refrigeration cycle Notice 1 The suction pressure is usually 4 5 6 0 kg cm2 G Cooling at normal condition 2 The temperature can be measured by attaching the thermometer to the low pressur...

Page 50: ...g for contacting Connector related to CN TAB 1 and RY COMP No 3 PIN Connector related to CN MOTOR Connector contacting of Outdoor Fan Compressor Display PWB Ass y Check Check each load Indoor Outdoor Fan Motor Compressor Stepping Motor and contacting condition of related connector PCB Board Operation Check Items Power Transformer Indoor unit Input Voltage Output Voltage IC01D 7812 Output Indoor Ou...

Page 51: ...ace battery Check the contact of CN DISP1 connector When the compressor stopped Indoor Fan is driven by a low speed At this point the wind speed is not controlled by the remote controller When operated in the Sleeping Mode the wind speed is set to the low speed by force Check DISP PWB Ass y Voltage between CN DISP1 DC 5V Check the connecting circuit between the remote controller MICOM No R17 2Ω IR...

Page 52: ... stopped Check the related circuit of R02H 12 1K R04H 6 2K Micom No 26 27 Indoor unit Check the indoor temperature sensor is disconnected or not About 10kΩ at 25 C Turn off Main Power Check the electrical wiring diagram of outdoor side Check the abnormal condition for the component of Compressor Outdoor Fan Motor Check the open or short of conmecting wires between indoor and outdoor Check Relay RY...

Page 53: ...circuit of indoor Fan Motor The pin NO 63 of Micom and the part for driving TRIAC the input and output signal of IC01M PIN NO 1 16 Check the pattern Check the TRIAC TRIAC Open Indoor Fan Motor never operate TRIAC short Indoor Fan Motor always operates in case of ON or OFF 4 When indoor Fan does not operate The voltage of PIN NO 1 blue and 3 yellow of CN MOTOR About AC 180V over About AC 50V over T...

Page 54: ...ector If there are no problems after above checks Confirm the assembly conditions that are catching and interfering parts in the rotation radial of the Vertical Louver 5 When Vertical Louver does not operate Check the operating circuit of the Vertical Louver Confirm that there is DC 12V between pin RED of CN U D and GND Confirm that there is a soldering short at following terminals Between and of ...

Page 55: ...e is disconnected or not about 10KΩ at 25 C Check the indoor pipe temperature is disconnected or not about 5KΩ at 25 C Turn ON Main Power Check the DC voltage on the PWB ASS Y The details of check are as followings Check point Between Micom NO 59 and GND Between IC01M NO 15 and GND Comp ON DC 5V Below DC 1V Comp OFF DC 0V About DC 12V Check point Between Micom NO 51 and GND Between IC02M NO 15 and...

Page 56: ...in Power Check the electrical wiring diagram of outdoor side Check the abnormal condition for the component of Compressor Outdoor Fan Motor 4 way Check the open or short of connecting wires between indoor and outdoor ...

Page 57: ...71A10009D 6 8K OPEN 1K 5 1K 10K 39K 3 LS L1261HL EL 6871A10009A 91K 56K 1K 5 1K 10K 91K 4 LS L1262HL 6871A10009M 91K 56K 1K 5 1K 10K 91K 5 LS L1220HL 6871A10009C 91K 56K 1K 3K 6 8K 56K PCB ASS Y SVC PART LIST NO MODEL P NO OPTIONAL FUNCTION OR1H OR2H OR3H OR4H OR5H OR6H 1 MAIN P W B ASM 2 MAIN P W B ASM ...

Page 58: ... 58 2 Display Ass y LS 1261 1262CL 1261EL P NO 6871A30009Q LS L1220 1261 1262HL 1263DL P NO 6871A30009Q ...

Page 59: ...s 19 22 24 23 s 1 20 21 A V d A V d 26 29 27 28 5V S 8 Vcc 5V 16 17 18 1 11 12 14 15 13 Hi OR6H Frequency Q Vss ST93C46CB6 EEPROM 93C46B OJ3H OJ1H OJ2H OJ4H D C 5 6 7 ORG DU 2 4 3 Med OR5H 30 5V Vdd0 10 39 ZNR02J SVC561D 14A R04C 10K HVB OUT 12V 12V 2 3 1 4 5 COMPRESSOR 2 1 50 60Hz AC220 240V 2 1 CN TAB2 1 1 3 4 CN TAB1 1 1 AC275V C01J 0 1 POWER TRANS D03D D02D 9 7 1 3 1000 35V C01D D01D C02D 50V ...

Page 60: ...F2 R25H R26H R24H 21 20 19 5V 1 d V A d s s V A 23 24 25 22 28 27 26 13 5V Vcc 8 15 16 14 S 1 17 12 11 18 Frequency OR6H Hi OJ4H OJ2H OJ1H OJ3H DU Vss ORG 93C46B EEPROM ST93C46CB6 7 6 5 C D 3 Q 4 2 OR5H 29 5V 10 Vdd0 39 IC01J TLP762JF R03J 680 1 2W 12V 4 5 3 1 2 R04J 560 BL 2 3 4 2 3 4 5 5 PK YL OR CN U D TRIAC G TRIAC T2 R01G R04G 220 4 6 5 7 2 3 13 12 11 10 15 14 8 1 9 16 CN MAIN1 4 7 1 2 3 5 6 ...

Page 61: ... View and Replacement Parts List 1 Indoor Unit 263230 16 W0CZZ 264110 268714 146811 352150 35211B 354212 346810 733010 131410 359011 342800 159901 1 159901 2 268712 135311 135312 267110 152313 135314 152302 249951 ...

Page 62: ... ASSY 6411A20006B 6411A20006B 6411A20006B 6411A20006B 6411A20006B R 267110 REMOTE CONTROLLER ASSY 6711A20010A 6711A20010E 6711A20010B 6711A20010F 6711A20012J R 268712 PWB PCB ASSY DISPLAY 6871A30009Q 6871A30009Q 6871A30009Q 6871A30009Q 6871A30009Q R 268714 PWB PCB ASSY MAIN 6871A10009B 6871A10009D 6871A10009A 6871A10009M 6871A10009C R 342800 BEARING 3H02821B 3H02821B 3H02821A 3H02821A 3H02821A R 3...

Page 63: ...0 REMOTE CONTROLLER ASSEMBLY 6711A20028B 6711A20028A R 268712 PWB PCB ASSEMBLY DISPLAY 6871A30009Q 6871A30009Q R 268714 PWB PCB ASSEMBLY MAIN 6871A10009A 6871A10009B R 342800 BEARING 3H02821B 3H02821B R 346810 MOTOR ASSEMBLY INDOOR 4681A20003P 4681A20003P R 352150 HOSE ASSEMBLY DRAIN 5251AR2575A 5251AR2575A R 354212 EVAPORATOR ASSEMBLY FINAL 5421A20031W 5421A20031K R 359011 FAN ASSEMBLY CROSS FLOW...

Page 64: ...2 Outdoor unit 64 554031 437212 435511 552111 554160 550140 552203 1 552203 2 430410 447910 649950 437210 559010 546810 ...

Page 65: ...PILLARY 5211A20133B 5211A20133B 5211A20141B 5211A20141B 5211A20141A R 552203 1 VALVE SERVICE 2H01890L 2H01890L 2H01890L 2H01890L 2H01890L R 552203 2 VALVE SERVICE 2H02479H 2H02479H 2H02479H 2H02479H 2H02479H R 554031 CONDENSER ASSY BENT 5403A20026D 5403A20026D 5403A20026B 5403A20026B 5403A20026B R 554160 COMPRESSOR 5416A20019A 5416A20019A 5416A20019A 5416A20019A 2520UKWK2CA R 559010 FAN ASSY PROPE...

Page 66: ...00982E R 552111 TUBE ASSEMBLY CAPILLARY 5211A20141B 5211A20095B R 552116 TUBE ASSEMBLY REVERSING 5211A20140C R 552202 VALVE REVERSING 5220AR3084A R 554031 CONDENSER ASSEMBLY BENT 5403A20026F 5403A20019R R 554160 COMPRESSOR 5416A20019A 5416A20019A R 559010 FAN ASSEMBLY PROPELLER 5901A10004A 5901A10004A R 561410 COIL ASSEMBLY REVERSING VALVE 3A02028Y R 649950 CONTROL BOX ASSEMBLY OUTDOOR 4995A20083F...

Page 67: ...P No 3828A30033U September 2000 Printed in Korea ...

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