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Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Electronic Parts Troubleshooting Guide

: The unit does not operate.

Possible Trouble 1

YES

NO

YES

Is the input voltage

AC230V?

Check the FUSE
and the wiring diagram.

Is the PIN 49,58 of

MICOM. DC5V?

Exchange MICOM.

YES

NO

Check the main P.C.B
pattern.

NO

YES

Is the output voltage

of IC03D DC5V?

NO

Exchange IC03D.

Is the input voltage

of IC03D about DC12V?

Check the
5V P.C.B pattern.

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Содержание LT-C182ELE0

Страница 1: ...ecautions in General SVC manual Only for authorized service personnel Internal Use Only http biz lgservice com MODEL LT E1820CL LT E1820HL LT E1860CL LT E1860HL LT E1860AA LT E1862HL BA LT E2460CL LT E2460HL LT E2460BL LT E2462HL LT E2462CL BA LT E2460AA LT C182ELE0 LT H182ELE0 LT H246ELE0 ELF0 LT C246ELE0 ELF0 ...

Страница 2: ... Operation Details 17 Installation of Indoor Outdoor Unit 20 Cycle 38 Cycle Troubleshooting Guide 41 Electronic Parts Troubleshooting Guide 42 Electronic Control Device 45 Schematic Digram 46 Exploded View 47 2 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 3: ...n According to the height of ceiling the RPM of indoor fan motor is selected to increase air reaching distance Central Control Optional It is operating individually or totally by central control function Group Control Optional Wiring Elevation Grille Optional Each controller can control 16 units and 8 controllers can be connected It operates maximum 16 units by only one wired remote con troller an...

Страница 4: ...lay Temperature Setting Setting the Timer Weekly Program Cooling model only Heating model only Low Med High Cooling Operation Mode Heating Operation Mode Auto Operation Mode Soft Dry Operation Mode Fan Operation Mode HI JET AUTO MED LO Program Holiday SET CLR Min Hour Week Timer Cancel Timer Cancel High 39 C LOW 11 C Fan Operates without cooling heating Cooling Heating Down to 18 C Up to 30 C Down...

Страница 5: ...ctly under front panel Do not drop it down or into water Or else there is worry about trouble failure Do not press hard the Remote Controller button with nail ball point pen or other sharp substance Or else there is worry about trouble failure In case when obstacle such as curtain hides the signal reception part of receiver in between the space interval Remote Controller operation is infeasible Li...

Страница 6: ...ending Depress the up button Then suction grill goes up and enters into the front panel 1 Stop the Air Conditioner Operation 2 Descend the Suction Grill 3 Raise the Suction Grill Depress the stop button Make use of this when you want to stop it at your wished posi tion 4 Stop the Suction Grill during Rising Always stop the air conditioner operation for safety before operating lift grill Take heed ...

Страница 7: ...ø25 32 1 220 60 4 536 5 274 18 000 4 536 5 274 18 000 1 900 1 900 8 8 8 8 53 53 2 39 2 78 13 50 1 9 O O 4 O O O O O 4 O O O O O O Optional O X 1 910 570 x 570 x 269 670 x 670 x 30 870 x 655 x 320 19 61 14 3 2 5 18 6 0 75 1 4 6 35mm 5 8 15 88mm 50 30 FoamPE 5mm ø25 32 LT E2460AA LT E1860CL LT E1860HL LT E1862HL LT E1862BA LT E1820CL LT C182ELE0 LT E1820HL LT H182ELE0 Power Supply ø V Hz Capacity Co...

Страница 8: ...2CL LT E2460AA 1 220 240 50 5 871 6 827 23 300 2 600 13 5 62 2 26 15 5 50 2 9 O X 4 O O O O O 4 O X O O O O Optional O X 1 900 570 x 570 x 269 670 x 670 x 30 870 x 655 x 320 19 16 5 2 5 61 14 3 2 5 18 4 0 75 1 4 6 35mm 5 8 15 88mm 50 30 FoamPE 5mm ø25 32 1 220 240 50 5 871 6 827 23 300 5 922 6 886 23 500 2 600 2 600 13 5 13 5 62 60 2 26 2 65 15 5 50 2 9 O O 4 O O O O O 4 O O O O O O Optional O X 1...

Страница 9: ...lectronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Dimensions 269 670 55 570 269 190 5 160 52 90 90 120 4 30 521 670 570 450 40 110 110 670 670 CLOSE OPEN OPEN CLOSE 1 Indoor Unit ...

Страница 10: ...tronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LT H ELE0 LT H FLE0 LT H DLE0 W D H W mm 670 850 950 H mm 90 90 90 D mm 670 850 950 unit mm Model LT H ELE0 LT H FLE0 LT H DLE0 DIM Unit ...

Страница 11: ... purposes LGE Internal Use Only 2 Outdoor Unit Gas side 3 way valve Liquid side 3 way valve W L6 L7 L8 L9 L4 L11 L10 D L1 L2 L5 L3 MODEL DIM W mm 870 H mm 655 D mm 320 L1 mm 370 L2 mm 25 L3 mm 340 L4 mm 630 L5 mm 25 L6 mm 546 L7 mm 162 L8 mm 162 L9 mm 54 L10 mm 74 5 L11 mm 79 All Models ...

Страница 12: ...08 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only INDOOR UNIT H EX Liquid Side Gas Side COMPRESSOR VALVE REVERSING ACCUM H EX Gas Side Liquid Side CAPI C1 CAPI A CAPI B Heating Cooring CAPI C2 OUTDOOR UNIT GAS LIQUID Elevation m Length m Additional refrigerant g m Pipe Size Rated Rated Max Max Capacity 18K 5 8 1 4 7 5 50 5 30 25 24K 5 8 1 4 7 5 5...

Страница 13: ... 7 5m If 18K Capacity is installed at a distance of 15m 187 5g of refrigerant should be added 15 7 5 x25g INDOOR UNIT H EX Liquid Side Liquid Side COMPRESSOR ACCUM H EX Gas Side Gas Side CAPI C1 CAPI A CAPI B CAPI C2 OUTDOOR UNIT GAS LIQUID Elevation m Length m Additional refrigerant g m Pipe Size Rated Rated Max Max Capacity 18K 5 8 1 4 7 5 50 5 30 25 24K 5 8 1 4 7 5 50 5 30 30 ...

Страница 14: ...R INPUT TO INDOOR UNIT TERMINAL BLOCK 1 L 2 N 3 L 4 N 5 6 7 8 INDOOR MOTOR DRAIN PUMP STEP MOTOR TEMP THERMISTOR PIPE THERMISTOR REMOTE CONTROL FLOAT S W CN DISP DISPLAY PCB Only for LT Exxx2HL AIR CLEANER H V ASSY DOOR S W TERMINAL BLOCK TO OUTDOOR UNIT BR YL BK OR BL BL BR GN YL RD BK YL BL GN YL OUT FAN COMP 4 WAY RD BK WH RD BK 3 L 4 N 5 6 7 FUSE T3 15A OUTDOOR WIRING DIAGRAM COMP R S H 4 2 8 ...

Страница 15: ...Use Only OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM INDOOR MOTOR DRAIN PUMP STEP MOTOR TEMP THERMISTOR PIPE THERMISTOR REMOTE CONTROL FLOAT S W CN DISP DISPLAY PCB Only for LT Exxx2HL AIR CLEANER H V ASSY DOOR S W TERMINAL BLOCK TO OUTDOOR UNIT BR YL BK OR BL BL BR GN YL RD BK YL BL GN YL OUT FAN COMP 4 WAY RD BK WH RD BK 3 L 4 N 5 6 7 FUSE T3 15A ...

Страница 16: ...R UNIT BR YL BK OR BL BL BR GN YL RD BL GN YL COMP 3 L 4 N 5 6 7 FUSE T3 15A OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM INDOOR MOTOR DRAIN PUMP STEP MOTOR TEMP THERMISTOR PIPE THERMISTOR REMOTE CONTROL FLOAT S W CN DISP DISPLAY PCB LT E 2HL ONLY AIR CLEANER H V ASSY DOOR S W TERMINAL BLOCK TO OUTDOOR UNIT BR YL BK OR BL BL BR GN YL RD YL BL GN YL COMP RD BK WH RD BK 3 L 4 N 5 6 7 FUSE T3 15A OUT...

Страница 17: ...yright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ELEVATION GRILL WIRING DIAGRAM INDOOR LT H DLE0 LT C DLE0 LT H ELE0 LT C ELE0 LT H FLE0 LT C FLE0 ...

Страница 18: ...to Swing Control This function is to swing the louver up and down automatically 3 Air Filter Checking Control Filter will display in the remote controller display and main body display when an air filter is polluted Then clean the air filter for reference to Owners Manual 4 Soft Dry Operation The indoor fan speed is automatically set to the low so the shift of the indoor fan speed is impossible be...

Страница 19: ...lected fan speed when it becomes lower than 39 C the fan operates at low speed 6 Heating Mode Operation The unit will operate according to the setting by the remote controller and the operation diagram is shown as follows Hot Start Low OFF Selected Fan Speed minimum 3min Selecting fan speed Low Low Low OFF OFF minimum 10sec 1min A A minimum 1min minimum 10sec B 7 Hot Start Control The indoor fan s...

Страница 20: ...is carried out according to the temp difference E TE1 TE2 between the indoor pipe temperatures of 25 min later TE1 and 45 min later TE2 after heating mode operation started When the indoor pipe temp is 41 C or above defrost control is not carried out even if the condition is one of the defrost conditions above While in defrost control the compressor is on and the indoor fan the outdoor fan and the...

Страница 21: ...e 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 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 More than 30cm Sunroof Fence or obstacles More than 70cm More than 50cm Mo...

Страница 22: ...e gas is generated 4 Avoid place where noxious gas is generated 5 Avoid places near high frequency generators 2 Ceiling opening dimensions and hanging bolt location Unit mm 570 Unit size 570 Unit size 450 Hanging bolt 75 75 600 Ceiling opening 600 Ceiling opening 521 Hanging bolt 39 5 39 5 Ceiling board Level gauge Ceiling Use the ventilation fan for smoke collecting hood with sufficient capacity ...

Страница 23: ...prevent the unit from falling off CAUTION 4 Remote Controller Installation Although the room temperature sensor is in the indoor unit the remote controller should be installed in such places away from direct sunlight and high humidity Installation of the remote controller Select places that are not splashed with water Select control position after discussion with customer The room temperature sens...

Страница 24: ...atteries Be sure that the and directions are correct Be sure that both batteries are new Re attach the cover Slide it back into position WIRED REMOTE CONTROL INSTALLATION REMOTE CONTROL PREPARATION OPTIONAL DISASSEMBLING ELECTRICAL WIRING HOW TO MOUNT ON A WALL HOW TO INSERT BATTERIES Make sure that wire and teminal numbers are matched on unit side and remote controller side The maximum length of ...

Страница 25: ...TIONAL AREA 0 75mm NORMAL CROSS SECTIONAL AREA 2 5mm Terminal Block of Indoor Unit 3 L 4 N 5 6 7 1 L 2 N 3 L 4 N 5 6 7 8 Terminal Block of Outdoor Unit Power Cord Terminal Block of Indoor Unit 3 L 4 N 5 6 7 1 L 2 N 3 L 4 N 5 6 7 8 Terminal Block of Outdoor Unit Power Cord Control box cover Indoor power cord Remote controller cord Control box cover fitting screw 2 units 5 Wiring Connection Open the...

Страница 26: ...tioner with a grounding wire and connector to meet the LOCAL REGULATION Main power source Switch box Refrigerant pipe Circuit Breaker Use circuit breaker or time delay fuse ELECTRICAL WIRING CONNECTING THE CABLE TO OUTDOOR UNIT 1 Remove the Cover control from the unit by loosening a screw Connect the wires to the terminals on the control board individually as following 2 Secure the cable onto the ...

Страница 27: ...nce between the indoor and the out door unit Cut the pipes a little longer than measured distance Cut the cable 1 5m longer than the pipe length 2 Burrs removal Completely remove all burrs from the cut cross section of pipe tube Put the end of the copper tube pipe to downward direc tion as you remove burrs in order to avoid to let burrs drop in the tubing 3 Putting nut on Remove flare nuts attache...

Страница 28: ...tdoor unit 4 After completing the piping connection be sure to check if there is gas leakage in indoor and outdoor connection After completing the piping connection execute vacuum drying for the connecting piping and the indoor unit The vacuum drying must be carried out using the ser vice ports of both the liquid and gas side valves Use two wrenches and tighten with regular torque Outdoor unit Liq...

Страница 29: ...or connector and display connector 6 After tightening these screws install the air inlet grille including the air filter Decoration panel fixing screws hexagon M5 screws Temporally fitting at 2 places Tightening about 10mm Control box cover Piping side Inlet Grille Inlet Grille Inlet Grille Louver motor Decoration panel fixing screws Hexagon M5 screw Air conditioner unit Decoration panel Key holes...

Страница 30: ...Tighten by amount 10mm in length The fixing screws hexagon M5 screw are included unit box 2 Remove the air inlet grille from the decoration panel Remove the hook for the air inlet grille cord 3 Hook the decoration panel key hole on the screws fixed in step above and slide the panel so that the screws reach the key hole edge 4 Retighten completely two temporarily fixed screws and other two screws T...

Страница 31: ...l and the suction grill fall down Don t pull suction grill Don t draw out suction grill irrationally Or else there is worry that lift grill drive part is damaged and suction grill might drop down Don t place obstacle in lift passage of lift grill When suction grill descends it automatically stops at a certain distance If there is any obstacle in lift passage suction grill might drop down and there...

Страница 32: ...n Use the clip accessory Flexible drain hose CAUTION The supplied flexible drain hose should not be curved neither screwed The curved or screwed hose may cause a leakage of water 1 50 1 100 MAX 700mm Flexible drain hose Flexible drain hose After the confirmation of the above conditions prepare the wiring as follows 1 Never fail to have an individual power specialized for the air conditioner As for...

Страница 33: ...kness more than 8mm for refrigerant piping gas piping thick pip ing and drain piping add further 10mm to 30mm thickness material Indoor unit Thermal insulator accessory Fastening band accessory Refrigerant piping HEAT INSULATION 1 Wrap the connecting portion of indoor unit with the Insulation material and secure it with two Plastic Bands for the right pipings If you want to connect an additional d...

Страница 34: ...an 5 minutes without stopping Test run will be cancelled 18 minutes later automatically The test run is started by pressing the room temperature checking button and down timer button for 3 sec onds at the same time To cancel the test run press any button After completing work be sure to measure and record trial run properties and store measured data etc Measuring data are room temperature outside ...

Страница 35: ...n the inside of control box cover 2 Provide a circuit breaker switch between power source and the unit 3 The screw which fasten the wiring in the casing 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 give rise to burn out of the ...

Страница 36: ...ntrolled by lower temperature between the temperature of main body and of remote controller sensor 3 Move the slide switch to set position 4 Close the rear cover and check if it works normally TH R14H SW TH REMO MAIN 2TH OP7 R18H R17H OP6 LO STAND SW HIGH HI R03S C070 R04S R02S R01S OP3 OP2 OP1 R19H R11H R13H R12H OP5R16H OP4 R15H CO1H REMO Room Temp sensor 2TH MAIN Position 2 Position 1 Position ...

Страница 37: ...OP2 OP1 R19H R11H R13H R12H OP5R16H OP4 R15H CO1H Lo Hi STAND Slide switch for ceiling height Slide switch for 2Thermistor Standard Default Low ceiling High Ceiling Ceiling height Mode of slide switch Change of air volume Remark more than 3 3m High Ceiling Increasing 2 7 3 3m Standard less than 2 7m Low Ceiling Decreasing Maunfactured in stan dard mode NOTICE NOTICE OUTDOOR WIRING DIAGRAM INDOOR W...

Страница 38: ...O INDOOR UNIT TERMINAL BLOCK 1 L 2 N 3 L 4 N 5 6 7 8 It operates maximum 16 Units by only one Wired Remote Controller and each Unit starts sequentially to prevent overcurrent Operation unit ZONE 1 2 3 4 Humidify JET AUTO AUTO SWING OPERATION FAN SPEED Program set SUB FUNCTION SET TEMP Room Temp HI MED LO Heater Defrost Filter Preheat Out door Time Timer On Set no Time Off 01 03 05 07 09 11 13 15 1...

Страница 39: ...ecking whether pipe connection is OK or not 5 If there is no leakage discharge N2 in piping com pletely into tank for retrieving Completely discharge is needed for vacuuming If leakage is found please fasten the joint more tight ly 6 After closing the valve of charging hose discon nect the tank and connect the vacuum pump to charging hose and open the valve again for vacu uming 7 Turn on the vacuu...

Страница 40: ...ank opening the valve of charg ing hose gas side slightly and then close it tightly 3 Operate the air conditioner for 10 15 min until cycle is stabilized 4 Close the spindle of service port liquid side high pressure and wait till pressure of gas side low pressure drops below 0 kgf cm2 5 After the needle of gage indicates below 0 kgf cm2 close the valve of gas side quickly and turn off the power 6 ...

Страница 41: ... of refrigerant it can be charged with a little at a time approximately 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 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 ...

Страница 42: ...ture difference between intake and discharge air depends 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 at normal condition 2 The temperature can be ...

Страница 43: ...ooting Guide The unit does not operate Possible Trouble 1 YES NO YES Is the input voltage AC230V Check the FUSE and the wiring diagram Is the PIN 49 58 of MICOM DC5V Exchange MICOM YES NO Check the main P C B pattern NO YES Is the output voltage of IC03D DC5V NO Exchange IC03D Is the input voltage of IC03D about DC12V Check the 5V P C B pattern ...

Страница 44: ...normally Check the fan motor and connector CN MOTOR YES Is the each Relay any problem YES NO YES It is normal operation Exchange IC01M Exchange Relay YES YES NO YES Is it Heating Mode Does the temperature set all right Change IC01M NO NO Adjust operation mode Adjust set temperature Is IC01M operated normally YES Check the connector CN OUT Check RY 4Way NO Is 4way valve operated Possible Trouble 3 ...

Страница 45: ...emote controller does not operate YES NO Is IC01M operated normally Check the motor and connector CN LOUVER Exchange IC01M NO YES YES YES Is the LCD operated normally Is the terminal of wired Remocon T2 DC12V Is the pin 39 40 of Micom DC 5V Change the wired Remocon Check the wired Remocon PCB and DC 12V pattern NO NO Check the parts of communication Connector CN Remo and terminals of wired Remocon...

Страница 46: ... 46 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Electronic control device MAIN P C B ASM ...

Страница 47: ...V C02J 100nF 3 1 3 1 2 2 M_RTX AC_L 275V C01J 100nF 3 4 NF INR14D561K ZNR01J T3 15A 3A 250V 22mH 3A 1 2 NF01J P6KE200A ZD01D DC310V NTC01D 400V 10uF C01D 10D 9 AC_N 1N4007 R01J D01D D03D C03D UF4005 TNY255P IC01D 4 1 S 2 255P TNY 5 D02D D 3 EN BP 4 5 UF5402 S Trans 1 6 7 36 33 35 34 39 38 37 41 40 44 43 42 46 45 CN ROOM CN PIPE ZD02D 57 52 47 49 48 51 50 54 53 56 55 60 59 58 62 61 11V 63 64 STEP M...

Страница 48: ...ht 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Exploded View 1 Indoor Unit 354212 249951 266090 268711B 266010 35211A 263230A 352118 330870 158591 159830 ...

Страница 49: ...ght reserved Only for training and service purposes LGE Internal Use Only 346810 130411 349600 359012 152312 135800 135303 W0CZZA 137211 267110B 267110A 352150A 352150B 130911B 130911A 140570 268711A 146811 Accessory Front Panel Accessory Option ...

Страница 50: ...ronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 137211 W4811 2 146812 2 146812 1 W4811 1 435310 152312 268712 668713 249951 146811 146811 267110 750830 266011 2 266011 2 Elevation Grille ...

Страница 51: ...ight reserved Only for training and service purposes LGE Internal Use Only 2 Outdoor Unit 435512 546810 549610 554160 552203A 649950 435511 W6920 552202 561410 W0CZZB 552203B 447910 550140 559010 430411 435301 349480 437212 437210 552113 554031 ...

Страница 52: ...P NO 3828A20048D JUNE 2008 ...

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