LG LS300CE Service Manual Download Page 59 | Manualshive

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(2) Outdoor Unit

CN-4WAY

LIVE

NEUTRAL

CN-CON

REVERSING

VALVE

D1

D3

D5

D4

D6

D0

D2

XIN

D7

(VASS)VSS

XOUT

TEST

RESET

TMP87CH46

MICOM

R02A,4.7K

2

DC 5V

IC01A

7036P

1

IN-PIPE

CN-TH2

1

1

IN-TEMP

C02A

10u

50V

R03A,100

3

+

R01A,1K

DC 5V

4

2

3

4

2

3

R02H

12.1K

C01A

0.01

CST8.00MGW

OSC01B

21

RY-COMP(A)

RY-COMP(B)

RY-LOW

RY-HI

4

4

6

6

5

5

2

2

3

3

CN-LEV

1

1

P76

9

10

DC 5V

R01T~R08T

10k

2

17

18

1

15

16

4

3

13

14

6

5

12

11

7

8

11

JOP5~JOP12

16

R01B,1M

19

20

17

18

P02

P00

P01

14

15

P04

P03

13

12

P71

P06

P05

9

10

P07

P70

7

8

4

P73

P72

6

5

P74

P75

2

3

DC 12V

IC01M

ULN2804

P77

1

DC 5V

S/TRANS

C09D

DC 5V

R05H,1K

R03H,1K

C01H

C02H

25V

0.01

0.01

25V

C03H

0.01

25V

R01H,1K

6.2K

R04H

TEST

22

472

6.2K

OUT-PIPE

CN-OUT-PIPE

1

1

2

3

2

3

C05D

470u/25V

R06H

0.01

DC 5V

+

O

7805

IC02D

SB360

C08D

R02D

39

C03D

150

ZD02D

2

11V

103

R01D

1

IC03D

TLP521-1

3

C06D

104

C02D

680uF

/35V

4

DC12V

I

681

C04D

D06D

+

C01D

15uF

450V

IC01D

TNY266

S

BP

D

EN

+

NTC100D-9

ST02D-200

D05D

R03D

1N4007

D01D

C02J

104

METAL

1M,1/2W

R01J

N-F01J

FUSE

ZNR01J

0.22uF

NF01J

250V/3A

2

2

CN-POWER

33

11

82K,3W,5%

DC 5V

JOP1_JIG

P22

2

3

R05H~08H

32

P10(INT0)

P60(AIN0)

P61(AIN1)

P64(AIN4)

P63(AIN3)

P62(AIN2)

P67(AIN7)

P65(AIN5)

P66(AIN6)

27

24

23

26

25

29

28

30

31

P17

P16

P15

P13

P12

P14

P11(INT1)

P20

P21

34

33

36

35

39

37

38

41

40

10Kx6

RX

TX

JOP1

R06F

R04F

R02F

R03F

R05F

OP2

OP3

OP4

OP6

OP5

DC 5V

JOP2

JOP3

JOP4

KRC102M

Q01K

12.1Kx6

IC02K(TLP627)

R04K

1k

1

4

25V

C07D

0.01

VDD

42

DC 5V

R04L,R05L

10k 10K

R01K,1K

25V

C01K

0.001

10K

R02K

DC 5V

IC01K(TLP621)

4

3

1

2

11

C03J

103

1N4007

D01Y

DC 12V

Q01Y

KRC107M

R05K

RY-4WAY

RY-4WAY

NF03M

RY-COMP(B)

1

1

2

2

3

3

RY-COMP(A)

11

2

2

NF02M

RY-LOW

C01J

103

1

1

33

22

D01K

1SR139-600

R03K

2K

1SR139-600

D02K

RY-HI

NF01M

AC220V

COMP B

COMP A

QK40

QJ60

CN-COMP

FAN1

CN-FAN

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Summary of Contents for LS300CE

Page 1: ...SERVICE MANUAL Room Air Conditioner CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL ONLY FOR AUTHORIZED SERVICE PERSONNEL MODEL LS300CE WEBSITE http biz LGservice com ...

Page 2: ...evation 10 Wiring Diagram 11 Operation Details 13 Display Function 20 Self diagnosis Function 20 Installation 21 Operation 37 Disassembly of the parts Indoor Unit 39 3 way Valve 43 Cycle Troubleshooting Guide 48 Electronic Parts Troubleshooting Guide 49 Electronic Control Device 55 Schematic Diagram 58 Exploded View and Replacement Parts List 60 ...

Page 3: ...0V 50Hz E 265V 60Hz 7 110V 50 60Hz F 200V 50 60Hz 8 380 415V 50Hz 9 380 415V 60Hz 7 Chassis A Z Name of Chassis of Unit Ex LSP SP Chassis 8 Look A Z Look Color Artcool Model 9 Function A Z 10 Serial No 1 9 LG Model De ARTCOOL COLOR velopment Serial No Basic A Basic 4Way B Plasma Filter C Plasma Filter 4 Way D Tele LCD E Tele LCD Nano plasma 4Way F Nano Plasma F A changeove A clean Low A G Nano Pla...

Page 4: ...prox 3 minutes High Med Low and Auto Intermittent operation of fan at low speed Both the indoor and outdoor fan stops during defrosting Hot start will be operated after defrosting ends The indoor fan stops until the indoor pipe temperature will be reached at 28 C 82 F The fan is switched to low Cooling med Heating speed The unit will be stopped after 1 2 3 4 5 6 7 hours The fan is switched to inte...

Page 5: ...EMPERATURE LOW HIGH Cooling 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 ON OFF SET 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 without cooling or heating...

Page 6: ...Airflow Direction Control up down Auto Airflow Direction Control left right Manual Remocon Type Wireless LCD Setting Temperature Range Cooling Mode 64 86 F Temperature Increment 2 F Auto Operation electronic control Yes Self Diagnosis Yes Timer 24hr On Of Sleep Operation Yes Healthy Dehumidification Mode Yes Restart Delay minutes 3 Refrigerant R 22 Charge g oz 2300 81 Power cord AWG P mm2 12 3 2 5...

Page 7: ... 1 Indoor Unit 7 Dimensions W H Tubing hole cover Tubing hole cover Installation plate D W mm inch 1 259 49 6 H mm inch 349 13 7 D mm inch 205 8 1 Model Dimension 30K SERIES ...

Page 8: ...m in ch 870 34 3 H mm in ch 800 31 5 D mm in ch 320 12 6 L1 mm in ch 370 14 6 L2 mm in ch 340 13 4 L3 mm in ch 25 1 0 L4 mm in ch 775 30 5 L5 mm in ch 25 1 0 L6 mm in ch 546 21 5 L7 mm in ch 162 6 4 L8 mm in ch 162 6 4 L9 mm in ch 54 2 1 L10 mm in ch 74 5 2 9 L11 mm in ch 79 3 1 30K SERIES 2 Outdoor Unit ...

Page 9: ...ATOR HEAT EXCHANGER CONDENSER HEAT EXCHANGER CONDENSER COMPRESSOR COMPRESSOR ACCUMU LATOR Suction Line Suction Line 3 WAY VALVE Evaporator Line Evaporator Line 3 WAY VALVE CAPILLARY TUBE CAPILLARY TUBE CHECK VALVE Heating Model only COOLING HEATING REVERSING VALVE Heating Model Only 1 Cooling Only Models 2 Cooling Heating Models ...

Page 10: ...trap should be installed per 5 7 meters 16 4 23 0ft CAUTION Outdoor unit Indoor unit A B A Oil trap Outdoor unit Indoor unit B In case more than 5m 16 4ft 30k 5 8 3 8 7 5 25 15 50 30 100 30 0 32 50Hz 60Hz Pipe Size Capacity Btu h GAS LIQUID Additional Refrigerant g m oz ft Max Length A m ft Max Elevation B m ft Standard Length m ft ...

Page 11: ...TART FORCED OPERATION CN DISP CN L R CN U D CN TH THERMISTOR STEP MOTOR UP DOWN STEP MOTOR L R H V B ASM LIMITS S W Negative ion OPTION STEP MOTOR L R CN L R DISPLAY PCB ASM 3854A20065D TO OUTDOOR UNIT BL 3 L1 4 L2 5 BR GN YL BL RD RD BR GN YL BR FUSE AC250V T2A TRIAC OR BK ZNR CN POWER CN MOTOR WIRING DIAGRAM ...

Page 12: ... LEV CN TH2 CN 4WAY PIPE IN PIPE OUT TEMP IN COIL EXPANSION RY HI RY COMP B RY COMP A 3 L1 2 L2 4 L2 1 L1 MAIN PCB ASM 3854A20153X WIRING DIAGRAM TO INDOOR UNIT POWER INPUT FMo T B Comp B OLP CAPACITOR B CAPACITOR A C C S S R R Comp A 5 RD BL BR BK YL YL BR BL BK RD RD BL BK BK BK OR OR GN YL BL BR FUSE 250V 5A FUSE 250V 5A FUSE 250V 3A CN POWER CN FAN CN CON CN COMP H H C C F CN LEV CN TH2 PIPE I...

Page 13: ...omatically operates with the Chaos Swing or they are fixed to the desired direction While in Chaos Swing mode the angles of cooling and heating cycle operations are different Operation Details INTAKE AIR TEMP SETTING TEMP 1 F Compressor ON SETTING TEMP 1 F Compressor OFF Setting fan speed Setting fan speed More than 3 minutes More than 3 minutes Setting fan speed COMPRESSOR ON OFF ON OFF ON INDOOR...

Page 14: ... AIR TEMP SETTING TEMP 1 F Compressor OFF SETTING TEMP 1 F Compressor ON COMPRESSOR ON OFF ON OFF INDOOR FAN SPEED The electronic control operation Intake air Temperature Setting Temperature Over 78 F 77 F Over 76 F below 78 F Intake air 1 C Over 72 F below 76 F Intake air 0 5 C Over 68 F below 72 F Intake air temperature below 64 F 64 F Over 64 F below 86 F Electronic control below 64 F 64 F over...

Page 15: ...ion for Heating only Heating Model Compressor ON temperature Setting temperature Compressor OFF temperature Setting temperature 6 F Intake air temp below 68 F Over 68 F below 70 F over 86 F Setting temp 68 F Intake air temperature 1 F 86 F Vertical louver auto operation During Auto Operation pressing the chaos swing button makes the horizon tal louvers swing up and down automatically If you want t...

Page 16: ... Intake Air Temp 1 C 18 C Intake Intake Air Temp 24 C Intake Air Temp 0 5 C Intake Air Temp 18 C 18 C While in compressor off the indoor fan repeats low airflow speed and pause While the intake air temp is between compressor on temp and compressor off temp 10 min dehumidification operation and 4 min compressor off repeat Compressor ON Temp Setting Temp 0 5 C Compressor OFF Temp Setting Temp 0 5 C ...

Page 17: ... temperature is higher than 95 F indoor fan operates at low speed When the indoor pipe temperature becomes lower than 95 F indoor fan stops B point When the indoor pipe temperature is higher than 38 C 100 F fan operates at selected fan speed INDOOR FAN SPEED Low OFF Low Low OFF OFF OFF LOW ON Selecting fan speed INDOOR PIPE TEMP 82 F 78 F 1min INDOOR FAN SPEED COMPRESSOR Hot Start Control The indo...

Page 18: ... 6 7 hours Heating Mode with the Sleep Mode only Heating Model The operation will be stopped after 1 2 3 4 5 6 7 hours INTAKE AIR TEMP SETTING TEMP 1 F Compressor ON SETTING TEMP 1 F Compressor OFF 30 minutes 30 minutes More than 3 minutes 2 F 2 F More than 3 minutes COMPRESSOR ON OFF ON OFF ON INDOOR FAN SPEED Low Low Low Low Low SETTING TEMP 6 F Compressor OFF SETTING TEMP Compressor ON COMPRESS...

Page 19: ...in after a power failure Auto Restarting Operation is the function to operate procedures automatically to the pre vious operating conditions If you want to use this operation The autorestart button is on the main unit of the appliance in the standard condition press the auto restart button to make this function active If you do not want to use this operation free the auto restart button once again...

Page 20: ...o Restart Mode Lights up during if Restart Button is pressed Auto Restart Button In failure of electric power if the button is pressed the unit runs as previous setting operation when power returns Forced Operation Button Operation starts when this button is pressed and stops when you press the button again 3sec 3sec 3sec once 3sec 3sec twice 3sec 5times Error Code 1 2 5 Error LED Indoor body oper...

Page 21: ...om the air con ditioner do not disturb neighbors Rooftop Installations If the outdoor unit is installed on a roof structure be sure to level the unit Ensure the roof structure and anchoring method are adequate for the unit location Consult local codes regarding rooftop mounting If the outdoor unit is installed on root structures or walls this may result in excessive noise and vibration and maybe a...

Page 22: ...rtant to use caution concerning the location of the installation plate routing of the wiring to power outlets is through the walls typically Drilling the hole through the wall for piping con nections must be done safely 5 7mm 0 2 0 3 Indoor WALL Outdoor Installation Plate Type A screw 1 D4 0 L38 0 MSR3 FZW 30K Right rear piping Left rear piping 50mm 2 0 ø70mm 2 76 180mm 7 2 115mm 4 5in 4 Drill a h...

Page 23: ...ttached to indoor and outdoor unit then put them on pipe tube having complet ed burr removal not possible to put them on after flaring work Copper pipe 90 Slanted Uneven Rough Bar Copper pipe Clamp handle Red arrow mark Cone Yoke Handle Bar A Pipe Reamer Point down 4 Flaring work Carry out flaring work using flaring tool as shown below Firmly hold copper pipe in a die in the dimension shown in the...

Page 24: ...to drop 1 Route the indoor tubing and the drain hose in the direction of rear left 2 Insert the connecting cable into the indoor unit from the outdoor unit through the piping hole Do not connect the cable to the indoor unit Make a small loop with the cable for easy connection later Right side panel Drain hose Main PCB Lower panel Lower panel For left rear piping CAUTION When install make sure that...

Page 25: ...ation plate Engage the three hooks of the rear top and rear lower of the indoor unit with the upper edge and lower edge of the installation plate Ensure that the hooks are properly seated on the installation plate by moving it left and right 5 Connecting the pipings to the indoor unit and drain hose to drain pipe Align the center of the pipings and sufficiently tighten the flare nut by hand Tighte...

Page 26: ...sec tion 1 Route the indoor tubing and the drain hose to the required piping hole position 2 Insert the piping drain hose and the connecting cable into the piping hole 3 Insert the connecting cable into the indoor unit Don t connect the cable to the indoor unit Make a small loop with the cable for easy connection later 4 Tape the drain hose and the connecting cable Connecting cable Plastic bands I...

Page 27: ...ipe 7 Wrap the insulation material around the connecting portion Overlap the connection pipe heat insulation and the indoor unit pipe heat insulation material Bind them together with vinyl tape so that there is no gap Wrap the area which accommodates the rear piping housing section with vinyl tape Installation plate Three upper hooks Installation plate Indoor unit Three lower hooks Setting line Vi...

Page 28: ...ings and the drain hose across the back of the chassis 9 Reinstall the parts to the original position Refix the lower panel to the original position Connect display conductor Refix the front right side panel to the original position with the two screws Drain hose Vinyl tape narrow Pipe Wrap with vinyl tape wide Lower panel Main PCB Piping for passage through piping hole ...

Page 29: ...s Be sure the rubber the cap is securely fastened so that there is no leakage 4 Connection of piping Outdoor 1 Align the center of the pipings and sufficiently tighten the flare nut by hand 2 Finally tighten the flare nut with torque wrench until the wrench clicks When tightening the flare nut with torque wrench ensure the direction for tightening follows the arrow on the wrench 1 2 3 4 Outdoor un...

Page 30: ...ires 3 L1 2 L2 1 L1 5 G Y RED BLUE BROWN G Y CAUTION Ø 8 5mm 0 33in 20mm 0 79in GN YL AWG 12 20mm 0 79in GN YL AWG 20 The power supply cord connected to the outdoor unit should be complied with the following specifications UL and CSA recognized one The connecting cable connected to the indoor and outdoor unit should be complied with the following specifications UL and CSA recognized one Ø 7 5mm 0 ...

Page 31: ...ing of electrical fittings are liable to 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 cause burn out of the wires 3 Specification of power source 4 Confirm that electrical capacity is sufficient 5 See to that the starting voltage is maintained at more than 90 perc...

Page 32: ...ure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit 5 Drain piping The drain hose should point downward for easy drain flow Do not make drain piping Right side panel Downward slope Do not raise Accumulated drain water Tip of drain hose dipped in water Air Waving Water leakage Water leakage Ditch Less than 50mm gap Water leakage Lower panel ...

Page 33: ...g cable from down to up Secure the tapped piping along the exterior wall using saddle or equivalent 3 In cases where the Outdoor unit is installed above the Indoor unit perform the following Tape the piping and connecting cable from down to up Secure the taped piping along the exterior wall Form a trap to prevent water entering the room Fix the piping onto the wall by saddle or equiva lent Taping ...

Page 34: ...gauges and dry nitrogen gas cylinder to this service port with charge hoses Pressurize the system to no more than 150 P S I G with dry nitrogen gas and close the cylinder valve when the gauge reading reached 150 P S I G Next test for leaks with liquid soap Do a leak test of all joints of the tubing both indoor and outdoor and both gas and liquid side service valves Bubbles indicate a leak Be sure ...

Page 35: ... an adjustable wrench This process is very important to prevent leakage from the system Replace the valve caps at both gas and liquid side service valves and fasten them tight This completes air purging with a vacuum pump The air conditioner is now ready to test run 1 Remove the caps from the gas side and liquid side valves 2 Remove the service port cap from the gas side valve 3 To open the gas si...

Page 36: ...ed and charge should be removed If the actual pres sure are lower than shown the system is most likely undercharged and charge should be added The air conditioner is now ready for use Bolt Tubing connection Outside ambient TEMP The pressure of the gas side service valve 35 C 95 F 4 5kg cm2 G 56 8 71 0 P S I G This is performed when the unit is to be relocated or the refrigerant circuit is serviced...

Page 37: ...imer 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 heating turns indoor fan on off ROOM TEMPERATURE CHECKING BUTTON Used to check the room temperature C F SELECTING BUTTON Choose temperature unit C or F alternatively HORIZONTAL AIRFLOW DIRECTIO...

Page 38: ... 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 heating turns indoor fan on off ROOM TEMPERATURE CHECKING BUTTON Used to check the room temperature C F SELECTING BUTTON Choose temperature unit C or F alternatively HORIZONTAL AIRFLOW DIRECTION CO...

Page 39: ...the 2 screws of right side panel Remove the front right side panel by the arrow The connector can be disconnected by pulling it while pressing the connector s hook Remove the 1 screw for fixing low panel Remove the lower panel by the arrow Take care not to scratch the wall and mat to drop Remove the left side pane Remove the 2 screws Main PCB Low panel Lower panel Right side panel Left side panel ...

Page 40: ...ille pull the lower left and right side of the grille toward you slightly tilted and lift it straight upward 2 To remove the sensor housing connector earth conductor and step motor conductor with sensor holder Motor Evaporator and P C B Power Conductor Step Motor Conductor Motor Conductor Sensor Conductor Earth Conductor 30K 32K ...

Page 41: ...downward slightly unhook the discharge grille Pull the discharge grille out from the chassis carefully 5 To remove the Evaporator Remove 3 screws securing the evaporator at the left 2EA at the right 1EA Remove 2 screws securing the evaporator clamp Unhook the tab on the right inside of the chassis at the same time slightly pull the evaporator toward you until the tab is clear of the slot Screw Scr...

Page 42: ...ot remove Loosen the screw securing the mount motor Separate the fan motor from the cross flow fan Take care not to drop the motor 7 To remove the Cross Flow Fan Loosen the screw securing the holder bearing Lift up the cross flow fan Screw Fan motor Screw Screw Fan motor Mount motor Holder bearing ...

Page 43: ...low pressure valve on the charge set slightly to air purge from the charge hose 5 Set the liquid side valve to the closed position 6 Operate the air conditioner in cooling mode and stop it when the gauge indicates 1kg cm2 g 7 Immediately set the Gas side valve to the closed position Do this quickly so that the gauge ends up indi cating 3 to 5kg cm2 g 8 Disconnect the charge set and mount the Liqui...

Page 44: ...are nut on liquid side 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 dis charge the refrigerant until the gauge indicates 3 to 5 kg cm2 g 6 Disconnect the charge set and the gas cylin der and set the Liquid side and Gas side valves to the open position Be sure to use a hexagonal wrench to operate the va...

Page 45: ...ischarge the refrigerant until the gauge indi cates 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 refrig erant until the gauge indicates 0 5 to 1 kg cm2 G if this is the case it will not be neces sary to apply a evacuatin Discharge the refrigerant gradually if it is dis charged too suddenly the re...

Page 46: ...of 4 mmHg 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 3 Way valve Outdoor unit Liquid side Indoor un...

Page 47: ...tely 150g each time while operating the air conditioner in the cooling cycle however one time is not suffi cient 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 dis charged If the system has been charged with liquid refrigerant while operating the air co...

Page 48: ...nds on room air humidity When the room air humidity is relativery higher temperature difference is smaller When the room air humidity is relatively lower tem perature 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 ...

Page 49: ...o 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 Outdoor unit Input Voltage Output Voltage IC01D 7812 Output Outdoor unit IC02D 7805 Output Outdoor unit IC04D 7805 Output Indoor unit IC01A KIA7036 Reset I...

Page 50: ...sor 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 DISP DC 5V When the detect switch double key inside the remote controller door is fault it is impossible to operate temperature regulating and wind speed sel...

Page 51: ...No 3 4 Indoor unit Check the related circuit of R04H 6 2K Micom No 3 Output 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 COMP...

Page 52: ...uit 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 2 15 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 TRIAC...

Page 53: ...when rotating the Vertical Louver with hands Normal Check the connecting condition of CN U D Connector Check the soldering condition on PWB of STEP U D Connector 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 V...

Page 54: ... ON DC5V About DC12V AC 208 230V COMP OFF DC0V DC0V Below AC10V CHECK POINT Between Micom No 13 and GND Between RY 4WAY No 1 and No 4 Between CN 4WAY and CN POWER 2 N COMP ON DC5V About DC12V AC 208 230V COMP OFF DC0V DC0V Below AC10V CHECK POINT Between Micom No 14 and GND Between RY FAN No 1 and No 4 Between CN FAN and CN POWER 2 N COMP ON DC5V About DC12V AC 208 230V COMP OFF DC0V DC0V Below AC...

Page 55: ... 55 Electronic Control Device 1 INDOOR UNIT P W B ASSEMBLY P No 6871A10153 PCB ASSEMBLY MAIN ...

Page 56: ... 56 TOP VIEW BOTTOM VIEW 2 OUTDOOR UNIT P W B ASSEMBLY ...

Page 57: ... 57 3 DISPLAY P W B ASM ...

Page 58: ... 58 Schematic Diagram 1 Indoor Unit ...

Page 59: ...02D 39 C03D 150 ZD02D 2 11V 103 R01D 1 IC03D TLP521 1 3 C06D 104 C02D 680uF 35V 4 DC12V I 681 C04D D06D C01D 15uF 450V IC01D TNY266 S BP D EN NTC100D 9 ST02D 200 D05D R03D 1N4007 D01D C02J 104 METAL 1M 1 2W R01J N F01J FUSE ZNR01J 0 22uF NF01J 250V 3A 2 2 CN POWER 3 3 1 1 82K 3W 5 DC 5V JOP1_JIG P22 2 3 R05H 08H 32 P10 INT0 P60 AIN0 P61 AIN1 P64 AIN4 P63 AIN3 P62 AIN2 P67 AIN7 P65 AIN5 P66 AIN6 27...

Page 60: ... List 1 Indoor Unit 268712 135315 152313 267110 354210 35211B W0CZZ 146811 1 146811 2 152302 152302 359011 1 135311 342801 135301 268714 263230 249951 359011 2 342800 352390 2 346810 733010 135313 135314 135312 352390 1 131410 159901 352150 ...

Page 61: ...ILTER ASSEMBLY DEODORIZER 5231A20032F 159901 VANE HORIZONTAL 5990A20003A 249951 CONTROL BOX ASSEMBLY INDOOR 4995A20337H 263230 THERMISTOR ASSEMBLY 6323A20002C 267110 REMOTE CONTROLLER ASSEMBLY 6711A20039M 268712 PWB PCB ASSY DISPLAY 6871A20108A 268714 PWB PCB ASSEMBLY MAIN 6871A10153B 342800 BEARING 4280A20003A 342801 BEARING 4280A20001A 346810 MOTOR ASSEMBLY INDOOR 4681AP2632H 35211B TUBE ASSY TU...

Page 62: ...10 552116 566000 649950 435512 554031 137213 1 137213 2 559010 435301 430410 546810 549610 437210 435511 552111 552201 263230 668711 W0CZZ 2 W0CZZ 1 552203 2 552203 1 554160 1 554160 2 567502 550140 1 550140 2 2 Outdoor Unit ...

Page 63: ...OMP 4022U L005A 550140 2 ISOLATOR COMP 4022U L002A 552111 TUBE ASSEMBLY CAPILLARY 5211A20034X 552116 TUBE ASSEMBLY REVERSING 552201 VALVE CHECK 3A01020H 552202 VALVE REVERSING 552203 1 VALVE SERVICE 2A00393H 552203 2 VALVE SERVICE 2A00392N 554031 CONDENSER ASSEMBLY BENT 6140AP2096A 554160 1 COMPRESSOR SET 2520UHAK2AA 554160 2 COMPRESSOR SET 2520UHAK2BA 559010 FAN ASSEMBLY PROPELLER 1A00195G 561410...

Page 64: ...P No 3828A20390R May 2004 Printed in Korea ...

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