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Service Manual 30

Troubleshooting Guide

• Exchange IC01M.

• Exchange IC01M.

Is the voltage NO.1 or 4

of IC01M DC 5V?

Is the voltage NO.13 or 16

of IC01M 0V?

• Check the RY-Hi or

RY-Lo.

• Check the wiring diagram.

NO

NO

YES

YES

• Exchange Micom.

• Exchange IC01M.

• Check the PCB pattern.

Is the voltage NO.6

of IC01M DC 5V?

Is the voltage NO.11

of IC01M 0V?

• Check the RY-SYNC.
• Check the connectionn
of CN-SYNC.

NO

NO

YES

YES

Possible Trouble 4

FAN does not operate.

Possible Trouble 5

Auto Swing does not operate.

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Содержание WG1805RY6

Страница 1: ...ditioner SERVICE MANUAL LG MODEL WG1805RY6 RAD 183A WG2405RY6 RAD 243A CAUTION website http www lgservice com BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL ONLY FOR AUTHORIZED SERVICE PERSONNEL ...

Страница 2: ...nts 8 Installation Kits Contents 8 Suggested Tool Requirements 9 Cabinet Installation 10 Operation 12 Features 12 Control Locations Function of Controls 12 Disassembly 14 Mechanical Parts 14 Air Handling Parts 15 Electrical Parts 16 Refrigerating Cycle 18 Schematic Diagram 21 Electronic Control Device 21 Wiring Diagram 22 Components Lation 23 Troubleshooting Guide 24 Piping System 24 Troubleshooti...

Страница 3: ...indications Meanings of symbols used in this manual are as shown below WARNING CAUTION This symbol indicates the possibility of death or serious injury This symbol indicates the possibility of injury or damage to property only WARNING Installation Do not use damaged power cord plugs or a loose socket There is risk of fire or electric shock Always use the power plug and socket with the ground termi...

Страница 4: ...nd installing the product Sharp edges could cause injury Be especially careful of the case edges and the fins on the condenser and evaporator Do not store or use flammable gas or com bustibles near the air conditioner There is risk of fire or failure of product Be sure the installation area does not deterio rate with age If the base collapses the air conditioner could fall with it causing property...

Страница 5: ...mm inch 675 26 9 18 675 269 18 Model Dimension 18K Btu 24K Btu Outside Dimensions This symbol alerts you to the risk of electric shock This symbol alerts you to hazards that could cause harm to the air conditioner This symbol indicates special notes NOTICE Symbols Used in this Manual Service Manual 5 ...

Страница 6: ...MS WG1805RY6 WG2405RY7 Table 1 1Ø 208 230V 60Hz 17 500 18 000 23 500 23 800 1 800 1 850 2 760 2 800 9 7 8 5 720g 25 4oz 830g 29 3oz 27 DB 19 WB 35 DB 24 WB 2 ROW 15 STACKS LOUVERED FIN TYP 2 ROW 19 STACKS LOUVERED FIN TYPE TURBO PROPELLER TYPE FAN WITH SLINGER RING 3 3 6 POLES WIRELESS REMOCN THERMISTOR VERTICAL LOUVER RIGHT LEFT HORIZONTAL LOUVER UP DOWN SLIDE IN OUT CHASSIS INTERNAL OVERLOAD PRO...

Страница 7: ...s kg OUTSIDE DIMENSION inch W x H x D mm MODELS ITEMS RAD 183A Table 1 1Ø 208 230V 60Hz 17 500 18 000 1 800 1 850 9 7 720g 25 4oz 27 DB 19 WB 35 DB 24 WB 2 ROW 15 STACKS LOUVERED FIN TYP 2 ROW 19 STACKS LOUVERED FIN TYPE TURBO PROPELLER TYPE FAN WITH SLINGER RING 3 3 6 POLES WIRELESS REMOCN THERMISTOR VERTICAL LOUVER RIGHT LEFT HORIZONTAL LOUVER UP DOWN SLIDE IN OUT CHASSIS INTERNAL OVERLOAD PROTE...

Страница 8: ...s kg OUTSIDE DIMENSION inch W x H x D mm MODELS ITEMS RAD 243A Table 1 1Ø 208 230V 60Hz 23 500 23 000 2 760 2 710 8 5 835g 29 3oz 27 DB 19 WB 35 DB 24 WB 2 ROW 15 STACKS LOUVERED FIN TYP 2 ROW 19 STACKS LOUVERED FIN TYPE TURBO PROPELLER TYPE FAN WITH SLINGER RING 3 3 6 POLES WIRELESS REMOCN THERMISTOR VERTICAL LOUVER RIGHT LEFT HORIZONTAL LOUVER UP DOWN SLIDE IN OUT CHASSIS INTERNAL OVERLOAD PROTE...

Страница 9: ...n the installation is finished 1 Grounding wire Green or Green and Yellow is provided in the power cord The green wire must be grounded 2 Connect to a single outlet 15A circuit or 20A circuit for Electric Heater Model 3 To avoid vibration or noise make sure the air conditioner is installed securely 4 Avoid placing furniture or draperies in front of the air inlet and outlet In humid weather excess ...

Страница 10: ...w a clear vertical opening of 18 from the bottom of the upper sash to the window stool 2 The stool offset height between the stool and sill must be less than 1 1 4 NOTICE Foam PE Adhesive Backed Foam PE Adhesive Backed Type C 5 Type D 2 Type A 14 Carriage Bolt 2 Lock Nut 4 Type B 7 Foam strip Plain Back Right frame curtain Window locking bracket Left frame curtain Frame guide 2 Sill bracket 2 26 t...

Страница 11: ... Foam PE to the underside of the window sash 4 Remove the backing from Foam PE with 3 holes and attach it to the bottom of the Top retainer bar 5 Attach the Top retainer bar on the top of the cabinet with 3 screws Type A 6 Insert the Frame guides into the bottom of the cabi net 7 Insert the Frame Curtain into the Top retainer bar and Frame guides 8 Fasten the curtains to the unit with 10 screws Ty...

Страница 12: ...ts outward CAUTION Do not drill a hole in the bottom pan The unit is designed to operate with approximately 1 2 of water in bottom pan 4 Pull the bottom window sash down behind the Top retainer bar until they meet 1 Do not pull the window sash down so tightly that the movement of Frame curtain is restricted Attach the cabinet to the window stool by driving the screws Type B through the cabinet int...

Страница 13: ...ash and the lower win dow sash See Fig 13 9 Attach the Window locking bracket with a screw Type C See Fig 14 10 Attach the front grille to the cabinet by inserting the tabs on the grille into the tabs on the front of the cabinet Push the grille in until it snaps into place See Fig 15 11 Lift the inlet grille and secure it with a screw Type A through the front grille See Fig 15 12 Window installati...

Страница 14: ...e temperature is selected by positioning the knob to the desired position The 5 or 6 position is a normal setting for average conditions OPERATION OFF Turns the air conditioner off MED FAN Permits the medium fan speed operation without cooling LOW FAN Permits the low fan speed operation without cooling HIGH COOL Permits cooling with the high fan speed operation MED COOL Permits cooling with the me...

Страница 15: ... 1 F ENERGY SAVER Available In some models The fan stops when the compressor stops cooling Approximately every 3 minutes the fan will turn on and check the room air to determine if cooling is needed AUTO SWING BUTTON Control the horizontal air direcion by air swing system 6 6 7 7 REMOTE CONTROL DISPLAY 8 1 7 4 5 3 2 6 Power Temp Fan Speed Timer Mode Energy Saver Auto Swing 1 4 3 6 2 7 WG2405RY6 WG...

Страница 16: ...en the cabinet at back 3 Pull the base pan forward See Figure 18 4 Remove the cabinet 5 Re install the component by referring to the removal procedure above 3 Control Box 1 Remove the front grille Refer to section 17 2 Remove the cabinet Refer to section 18 3 Remove the 2 screws that fasten the control box cover 4 Remove two housings that connect compressor wire and motor wire in the control box 5...

Страница 17: ...vaporator sideward carefully 4 Remove the orifice from the air guide carefully 5 Remove the clamp which secures the blower with plier See Fig 21 6 Remove the blower with plier or your hand without touching blades See Fig 22 7 Re install the components by referring to the removal procedure above 6 Fan 1 Remove the cabinet Refer to section 18 2 Remove the brace and shroud cover Refer to section 20 3...

Страница 18: ...the components by referring to the removal procedure above 8 Compressor 1 Remove the cabinet Refer to section 18 2 Discharge the refrigerant system using FreonTM Recovery System If there is no valve to attach the recovery system install one such as a WATCO A 1 before venting the FreonTM Leave the valve in place after servicing the system 3 Disconnect the 3 leads from the compressor 4 After purging...

Страница 19: ...g to the above removal procedure above Use only one ground marked hole for ground connection 8 If the supply cord of this appliance is damaged it must be replaced by the special cord The special cord means the cord that has the same specification marked on the supply cord attached at the unit 11 Thermistor 1 Remove the control box Refer to section 19 2 Unfold the control box Refer to section 25 3 ...

Страница 20: ...ections 5 Remove the condenser 6 Re install the component by referring to notes See Figure 31 14 evaporator 1 Remove the cabinet Refer to section 18 2 Remove the 2 screws that fasten the evaporator 3 Move the evaporator sideways carefully Refer to section 20 4 After discharging the refrigerant completely unbraze the interconnecting tube at the evaporator connections 5 Remove the evaporator 6 Re in...

Страница 21: ...leak or moisture remaining in the system With valves A and B closed stop the vac uum pump 4 Remove the hose from the vacuum pump and place it on the charging cylinder See figure 33B Open valve C Discharge the line at the manifold connection 5 The system is now ready for final charging 6 Recharge as follows 1 Refrigeration cycle systems are charged from the High side If the total charge cannot be p...

Страница 22: ...of making a leak proof seal Leak detector Tubing cutter Hand Tools to remove components Service valve A COMPOUND GAUGE EVAPORATOR LOW PRESSURE SIDE COMPRESSOR CAPILLARY TUBE CONDENSER HIGH PRESSURE SIDE SEE INSETS BELOW MANIFOLD GAUGE B Figure 33A Pulling Vacuum Figure 33B Charging A B EXTERNAL VACUUM PUMP A CHARGING CYLINDER LOW HI B C ...

Страница 23: ... 31 HI MED ION 29 28 27 SLIDE SW 40 KEY0 37 38 39 VDD SEG g 41 42 43 SEG f SEG e 44 SEG d TMP87CH47U MICOM 4 SEG b SEG a SEG c 3 2 1 7 6 5 Room TH Option2 Option1 Pipe TH 23 26 25 24 SYNC LOW 4WAY COMP 20 21 22 Reset Osc out Osc in 16 VAref VSS 18 19 17 13 14 15 TEST 11 SCL SDA 10 9 8 Tx 12 Rx 5V A1 3 4 GND SDA SCL A2 A0 1 2 EEPROM 24LC01BT SMW250 04 1 1 2 2 CN TH1 5V R01B R02H R01H 1 6 2K 1 12 1K...

Страница 24: ...OR BK BK BL RD BL RD CN TH1 YL YL OR BR OR BR OR BR SYNC MOTOR RY LO RY HI CN WORK CN SYNC CN DISP DISPLAY P W B ASM RY SYNC 250V T2A 115V T2A TRANS FORMER ZNR RY COMP MAIN P W B ASM BK BK BR BR RD BL BL OLP RD MOTOR CAPACITOR F R S COMP C C H 3854AR2330P WIRING DIAGRAM RY MID FUSE RD BK PTC 4 3 MODEL WG1805RY6 WG2405RY6 ...

Страница 25: ...Service Manual 24 Schematic Diagram Components Location Main P W B Assembly Display P W B Assembly ...

Страница 26: ...e cooling cycle MOTOR COMPRESSOR OIL LIQUID REFRIGERANT CAPILLARY TUBE OUTSIDE COOLING AIR FOR REFRIGERANT PASS THROUGH SUCTION LINE COOL LOW PRESSURE VAPOR COOLED AIR COMPLETE LIQUID BOIL OFF POINT LIQUID PRESSURE DROP ROOM AIR HEAT LOAD VAPOR INLET HOT DISCHARGED AIR LIQUID OUTLET HIGH PRESSURE VAPOR LIQUID REFRIGERANT LOW PRESSURE VAPOR ROOM AIR CONITIONER EVAPORATOR COILS CONDENSER COILS CYCLE...

Страница 27: ...Check gas leakage Repair gas leak Replacement of unit if the unit is beyond repair Satisfactory operation with temperature difference of inlet outlet air 44 50 F 7 10 C Check heat load increase Unexpected residue Overloaded circuit Check inside gas pressure Adjusting of refrigerant charged Malfunction of compressor Replacement of compressor Check clogging in refrigera tion circuit Repair clogging ...

Страница 28: ...rregular motor insulation Replacement of fan motor Regular but fails to start Replacement of compressor locking of rotor metal Improper thermostat setting Loose terminal connection Improper wiring Irregular motor resistance Irregular motor insulation Replacement of compressor Motor damaged Drop of power voltage Capacitor check Replacement Compressor only fails to start Defect of compressor capacit...

Страница 29: ...Is output Voltage of IC02D DC 5V Is the voltage No 20 of Micom DC 5V Exchange Main PCB Ass y Is the connection between Main and Display all right Is the reset circuit all right The No 16 of Micom is 5V Check the Fuse Check the wiring diagram Check the Main PCB pattern Exchange the Trans Exchange D02D D05D Exchange IC01D Exchange IC02D Exchange IC01A C02A Connect connector exactly Check the PCB pat...

Страница 30: ... Wait 3 Minutes Is the Unit for 3 minutes delay Exchange MAIN PCB Ass y Is the voltage N0 7 of IC01M DC 5V Check the RY COMP Check the wiring Diagram NO NO NO YES YES YES YES Is the wire connection of RY COMP all right Check the RY COMP Connect LEAD Wire to RY COMP again NO YES NO Possible Trouble 2 The compressor does not operate Possible Trouble 3 The compressor always operate ...

Страница 31: ...C01M 0V Check the RY Hi or RY Lo Check the wiring diagram NO NO YES YES Exchange Micom Exchange IC01M Check the PCB pattern Is the voltage NO 6 of IC01M DC 5V Is the voltage NO 11 of IC01M 0V Check the RY SYNC Check the connectionn of CN SYNC NO NO YES YES Possible Trouble 4 FAN does not operate Possible Trouble 5 Auto Swing does not operate ...

Страница 32: ...y Does the Q01G Q04G operate normally on main PCB Ass y Is the voltage of Battery about over 2 3V Exchange Receiver Ass y Is the connection of CN DISP all right Is the voltage No 16 of CN DISP on Main PCB Ass y DC 5V Exchange the battery Check the PCB pattern Connect connector to CN DISP exactly NO NO NO YES YES YES Possible Trouble 6 Remote controller does not operate Possible Trouble 7 It displa...

Страница 33: ...ntion to any change from high speed to low speed If the speed does not change replace the motor If cracked out of balance or partially missing replace it If cracked out of balance or partially missing replace it Tighten it If knocking sounds continue when running or loose replace the motor If the motor hums or noise appears to be internal while running replace motor Check voltage If not within lim...

Страница 34: ...nspect the interior surface of the condenser if restricted clean carefully with a vacuum cleaner do not damage fins or brush Clean the interior base before reassembling If condenser fins are closed over a large area on the coil surface head pressures will increase causing the compressor to overload Straighten the fins or replace the coil Test capacitor Check the terminals If loose repair or replac...

Страница 35: ...tting air guide rearrange the air handling parts Remove the cabinet and carefully rearrange tubing not to contact cabinet compressor shroud and bar rier Set the knob to HIGH COOL or LOW COOL while rocker switch is ON Check terminals If loose repair or replace Check the synchronous motor for open circuit Capacitor Wiring Refrigerating system Air filter Exhaust damper door Unit undersized Turbo or f...

Страница 36: ...1 2 135312 552111 554031 148000 352380 349600 346811 130410 354210 147582 349001 359012 349480 W48602 W48602 559011 149980 550140 554160 352115 352113 35211A 352111 130910 W52106 2 W52106 1 W0CZZ 269300 249950 135510 266003 137215 146812 264100 266002 149410 Cooling Model 135500 135515 ...

Страница 37: ...2 135312 552111 554031 148000 352380 349600 346811 130410 354210 147582 349001 359012 349480 W48602 W48602 559011 267110 149980 550140 554160 352113 35211A 352111 567480 268711 1 146812 264110 268711 2 237200 238310 W0CZZ 249950 135510 130910 W52106 2 W52106 1 Cooling Model 135500 135515 ...

Страница 38: ...480 ORIFICE 349600 MOUNT MOTOR 352111 TUBE ASSEMBLY CONDENSER OUT 352113 TUBE ASSEMBLY DISCHARGE SINGLE 35211A TUBE ASSEMBLY SUCTION SINGLE 352390 AIR GUIDE ASSEMBLY 354210 EVAPORATOR ASSEMBLY FIRST 359012 FAN ASSEMBLY TURBO 552101 TUBE CAPILLARY 554031 CONDENSER ASSEMBLY BENT 554160 COMPRESSOR SET 559010 FAN ASSEMBLY AXIAL W0CZZ CAPACITOR DRAWING W48602 CLAMP SPRING W52106 1 TUBE EVAPORATOR W5210...

Страница 39: ...TOR ASSEMBLY SINGLE 4681A20081W R 349001 DAMPER VENTILATION 4900AR7265A R 349480 ORIFICE 4948A20016A R 349600 MOUNT MOTOR 4960AR1596A R 352111 TUBE ASSEMBLY CONDENSER OUT 5211AR7059E R 352113 TUBE ASSEMBLY DISCHARGE SINGLE 5211A21526J R 35211A TUBE ASSEMBLY SUCTION SINGLE 5211A10094P R 352380 AIR GUIDE ASSEMBLY 5239A20001W R 354210 EVAPORATOR ASSEMBLY FIRST 5421A20248F R 359012 FAN TURBO 5900A2002...

Страница 40: ...ROLLER 6711A20035A R 268712 PWB PCB ASSEMBLY DISPLAY 6871A20611A R 268714 PWB PCB ASSEMBLY MAIN 6871A10193N R 346811 MOTOR ASSEMBLY SINGLE 4681A20081T R 349001 DAMPER VENTILAYION 4900AR7265A R 349480 ORIFICE 4948A20016A R 349600 MOUNT MOTOR 4960AR1596A R 352111 TUBE ASSEMBLY CONDENSER OUT 5211AR7059A R 352113 TUBE ASSEMBLY DISCHARGER SINGLE 5211A25040B R 35211A TUBE ASSEMBLY SUCTION SINGLE 5211A10...

Страница 41: ...EMBLY DISPLAY 6871A20611A R 268711 2 PWB PCB ASSEMBLY MAIN 6871A10193N R 346811 MOTOR ASSEMBLY SINGLE 4681A20081W R 349001 DAMPER VENTILAYION 4900AR7265A R 349480 ORIFICE 4948A20016A R 349600 MOUNT MOTOR 4960AR1596A R 552113 TUBE ASSEMBLY CONDENSER OUT 5211AR7059E R 352113 TUBE ASSEMBLY DISCHARGER SINGLE 5211A21526J R 35211A TUBE ASSEMBLY SUCTION SINGLE 5211A10094P R 749750 AIR GUID EASSEMBLY 5239...

Страница 42: ...P No 3828A20887A JULY 2007 Printed in China ...

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