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LG Electronics RAD-243A manual

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Table of contents for the manual

  • Page 1

    LG Room Air Conditioner 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.[...]

  • Page 2

    2 Room Air Conditioner Air Conditioner Ser vice Manual T ABLE OF CONTENTS Safety Precautions ..........................................................................................................................................3 Dimensions ..........................................................................................................[...]

  • Page 3

    Ser vice Manual 3 Saf ety Precautions Safety Precautions T o pre v ent injur y to the user or other people and proper ty damage, the f ollowing instructions must be f ollowed. ■ Incorrect operation due to ignoring instruction will cause har m or damage. The seriousness is classified by the f ollowing indications . ■ Meanings of symbols used in [...]

  • Page 4

    4 Room Air Conditioner Saf ety Precautions Do not modify or extend the po wer cord. • There is risk or fire or electric shock. Do not install, remove, or re-install the unit b y y ourself. • There is risk of fire, electric shock, e xplosion, or injur y . Be cautious when unpacking and installing the product. • Sharp edges could cause injur y [...]

  • Page 5

    Dimensions Dimensions 675 (770) 660 428 W mm(inch) 660(26") 660(26") H mm(inch) 428(16 27 / 32 ") 428(16 27 / 32 ") D mm(inch) 675(2 6 9 / 18 ") 675(269/18") Model Dimension 18K Btu 24K Btu Outside Dimensions This symbol alerts you to the risk of electric shoc k. This symbol alerts you to hazar ds that could cause harm[...]

  • Page 6

    6 Room Air Conditioner Specfications Pr oduct Specifications POWER SUPPLY COOLING CAPACITY INPUT RUNNING CURRENT REFRIGERANT (R-22) CHARGE(g) OPERATING INDOOR(°C) TEMPERATURE OUTDOOR(°C) EVAPORATOR CONDENSER FAN, INDOOR FAN, OUTDOOR FAN SPEEDS, FAN/COOLING FAN MOTOR OPERATION CONTROL ROOM TEMP. CONTROL AIR DIRECTION CONTROL CONSTRUCTION PROTECTOR[...]

  • Page 7

    7 Room Air Conditioner Specfications Pr oduct Specifications POWER SUPPLY COOLING CAPACITY INPUT RUNNING CURRENT REFRIGERANT (R-22) CHARGE(g) OPERATING INDOOR(°C) TEMPERATURE OUTDOOR(°C) EVAPORATOR CONDENSER FAN, INDOOR FAN, OUTDOOR FAN SPEEDS, FAN/COOLING FAN MOTOR OPERATION CONTROL ROOM TEMP. CONTROL AIR DIRECTION CONTROL CONSTRUCTION PROTECTOR[...]

  • Page 8

    7 Room Air Conditioner Specfications Pr oduct Specifications POWER SUPPLY COOLING CAPACITY INPUT RUNNING CURRENT REFRIGERANT (R-22) CHARGE(g) OPERATING INDOOR(°C) TEMPERATURE OUTDOOR(°C) EVAPORATOR CONDENSER FAN, INDOOR FAN, OUTDOOR FAN SPEEDS, FAN/COOLING FAN MOTOR OPERATION CONTROL ROOM TEMP. CONTROL AIR DIRECTION CONTROL CONSTRUCTION PROTECTOR[...]

  • Page 9

    Se r vice Ma n ual 8 Installation Installation Select the Best Location Installation Chec k How to Secure the Drain Pipe 1.To prevent vibration and noise, make sure the unit is installed securely and firmly. 2.Install the unit where the sunlight does not shine directly on the unit. 3.The outside of the cabinet must extend outward for at least 30cm [...]

  • Page 10

    9 Room Air Conditioner Installation Window Requirements Installation Kits Contents All supporting parts should be secured to firm wood, masonry, or metal. 1. This unit is designed for installation in standard dou- ble hung windows with actual opening widths from 26" to 41". The top and bottom window sashes must open suffi- ciently to allo[...]

  • Page 11

    Se r vice Ma n ual 10 Installation Suggested T ool Requirements PREP ARA TION OF CHASSIS 1. Remove the screws which fasten the cabinet at both sides and at the back. 2. Slide the unit out from the cabinet by gripping the base pan handle and pulling forward while bracing the cabinet. 3. Cut the window sash seal to the proper length. Peel off the bac[...]

  • Page 12

    11 Room Air Conditioner Installation Cabinet Installation 1. Open the window. Mark a line on the center of the window stool between the side window stop mold- ings. Loosely attach the sill bracket to the support bracket using the carriage bolt and the lock nut. 2. Attach the sill bracket to the window sill using the screws (Type B). Carefully place[...]

  • Page 13

    Se r vice Ma n ual 12 Installation 5. Pull each Frame curtain fully to each window sash track, and pull the bottom window sash down behind the Top retainer bar until it meets. 6. Attach each Frame curtain the window sash by using screws (Type C.) (See Fig. 11) 7. Slide the unit into the cabinet.(See Fig. 12) CA UTION: For security purpose, rein- st[...]

  • Page 14

    13 Room Air Conditioner • Designed for COOLING ONLY. • Powerful and whispering cooling. • Slide-in and slide-out chassis for the simple instal- lation and service. • Side air-intake, side cooled-air discharge. 1. Cooling Only Model • VENTILATION The ventilation lever must be in the CLOSE position in order to maintain the best cooling cond[...]

  • Page 15

    Se r vice Ma n ual 14 Operation 2. Cooling Only Model with Remote Contr ol and T ouch T ype POWER BUTTON Operation starts, when this button is pressed and stops when you press the button again. OPERATION MODE SELECTION BUTTON Select Cooling, or Fan or Dehumid mode with button. (Dehumid mode is not to all models.) ON/OFF TIMER BUTTON Set the time of[...]

  • Page 16

    15 Room Air Conditioner Disassembly Disassembl y Mechanical P arts — Before the following disassembly, CONTROL BOX set to OFF and disconnect the power cord. 1. Front Grille 1. Open the lnlet grille upward . 2. Remove the screw that fastens the front grille. 3. Pull the front grille from the right side. 4. Remove the front grille. 5. Re-install th[...]

  • Page 17

    Se r vice Ma n ual 16 Disassembly Air Handling P ar ts 4. Cover (at the top) 1. Remove the front grille. (Refer to section 17) 2. Remove the cabinet. (Refer to section 18) 3. Remove 11 screws which fasten the brace and covers. 4. Remove the covers and the brace. (See Fig. 20) 5. Re-install the components by referring to the removal procedure, above[...]

  • Page 18

    17 Room Air Conditioner 6. Shroud 1. Remove the fan. (Refer to section 21) 2. Remove the screw that fastens the shroud. 3. Remove the shroud. (See Figure 24) 4. Re-install the component by referring to the removal procedure, above. 7. Motor 1. Remove the cabinet. (Refer to section 18) 2. Remove the cover control and disconnect a wire housing in con[...]

  • Page 19

    Se r vice Ma n ual 18 Disassembly 9. Capacitor 1. Remove the control box. (Refer to section 19) 2. Remove the knobs and the screw that fasten control panel from control box. 3. Remove the screw that located in the front. 4. Open the bottom side of control box. 5. Remove the screw and the clamp that fastens the capacitor. 6. Disconnect all the leads[...]

  • Page 20

    19 Room Air Conditioner Disassembly CA UTION: Dischar g e the refrigerant system using a Freon TM Recovery System. If there is no valve to attac h the recovery system, install one (such as a W A TCO A-1) before venting the Freon TM . Leave the v alve in place after servicing the system. 13. Condenser 1. Remove the cabinet. (Refer to section 18) 2. [...]

  • Page 21

    Se r vice Ma n ual 20 Disassembly — Replacement of the refrigeration cycle. 1. When replacing the refrigeration cycle, be sure to Discharge the refrigerant system using a Freon TM recovery System. If there is no valve to attach the recovery system, install one (such as a WATCO A-1) before venting the Freon TM . Leave the valve in place after serv[...]

  • Page 22

    21 Room Air Conditioner Disassembly Equipment needed: Vacuum pump, Charging cylinder, Manifold gauge, Brazing equipment. Pin-off tool capable 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 SI[...]

  • Page 23

    Se r vice Ma n ual 22 Schematic Diagram Schematic Dia gram Electr onic Control De vice WP Vcc Digit3 (Scan3) Digit4 (Scan4) Digit1 (Scan1) Digit2 (Scan2) Digit0 (Scan0) MAIN POWER COMP HERM FAN C CAPACITOR MOTOR FAN 120 1/2W ZNR01J TVR14271 250V/T3.15A FUSE G4A-1A-E-LG RY-COMP 1000 D02D~D05D 1N4004 35V D03D D02D POWER TRANS 1 2 7 4 D05D + D04D C01D[...]

  • Page 24

    23 Room Air Conditioner Schematic Diagram Wiring Diagram WH(BL) POWER INPUT BK(BR) (Ribbed) (Plain) GN/YL (GN) GN/YL(GN) THERMIST OR BK BK BL RD BL RD CN-TH1 YL YL OR(BR) OR(BR) OR(BR) SYNC M OTOR R Y -LO R Y -HI CN-WORK CN-SYNC CN-DISP DISPLA Y P .W .B ASM R Y -SYNC 250V/T2A (115V/T2A) TRANS FORMER ZNR R Y -COMP MAIN P .W .B ASM BK BK BR BR RD BL [...]

  • Page 25

    Se r vice Ma n ual 24 Schematic Diagram Components Location Main P .W .B Assembly Display P .W .B Assembl y[...]

  • Page 26

    25 Room Air Conditioner T roubleshooting Guide T r oubleshooting Guide Piping System Figure 34 is a brief description of the important components and their function in what is called the refrigeration system. This will help you to understand the refrigeration cycle and the flow of the refrigerant in the cooling cycle. MOTOR COMPRESSOR OIL (LIQUID R[...]

  • Page 27

    Se r vice Ma n ual 26 T roubleshooting Guide T r oubleshooting Guide In general, possible trouble is classified in two kinds. The one is called Starting Failure which is caused from an electrical defect, and the other is ineffective Air Conditioning caused by a defect in the refrigeration circuit and improper application. Unit runs but poor cooling[...]

  • Page 28

    27 Room Air Conditioner T roubleshooting Guide Fails to Start Check circuit breaker and fuse. Gas leakage of feeler bulb of thermostat Check of control switch. Fan only fails to start. Improper wiring. Defect of fan motor capacitor . Irregular motor resistance ( ). Irregular motor insulation ( ). Replacement of fan motor . Regular but fails to star[...]

  • Page 29

    Se r vice Ma n ual 28 T roubleshooting Guide Electrical P ar ts T roub leshooting Guide Possible Trouble 1 The unit does not operate. Is the Trans output power AC 220V? Is the Trans output power about AC 14V? Is shorted the Trans. output? Is output Voltage of IC01D DC 12V? Is output Voltage of IC02D DC 5V? Is the voltage No.20 of Micom DC 5V? Excha[...]

  • Page 30

    29 Room Air Conditioner T roubleshooting Guide Is setting Temp. set lower than Room Temp.-0.5 ° C? Is the voltage No.10 of IC01M 0V? • Exchange IC01M. • Select the setting Temp. to lower Number. • 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. • [...]

  • Page 31

    Se r vice Ma n ual 30 T roubleshooting 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 [...]

  • Page 32

    31 Room Air Conditioner T roubleshooting Guide NO NO NO NO YES YES YES Is the IC01G all right? Is the connection of CN-DISP all right? • Exchange the display PCB Ass'y. • Exchange IC01G. • Exchange Q01G-Q04G. • Connect connector to CN-DISP exactly. Does the Q01G~Q04G operate normally on main PCB Ass'y? Is the voltage of Battery ab[...]

  • Page 33

    Se r vice Ma n ual 32 T roubleshooting Guide COMPLAINT CAUSE REMEDY Check voltage at outlet. Correct if necessary. Check voltage to rotary switch. If none, check power supply cord. Replace cord if circuit is open. Check switch continuity. Refer to wiring diagram for terminal identification. Replace switch if defective. Connect wire. Refer to wiring[...]

  • Page 34

    33 Room Air Conditioner T roubleshooting Guide COMPLAINT CAUSE REMEDY Check the position of knob If not at the coldest set- ting, advance the knob to this setting and restart unit. Check continuity of the thermostat. Replace ther- mostat if circuit is open. Check the TEMP control. If not at the lowest num- ber, set TEMP control to this setting and [...]

  • Page 35

    Se r vice Ma n ual 34 T roubleshooting Guide COMPLAINT CAUSE REMEDY Test capacitor. Check the terminals. If loose, repair or replace. Check the system for a restriction. If restricted, clean of replace. Close if open. Determine if the unit is properly sized for the area to be cooled. Check the set screw or clamp. If loose or missing, correct. If th[...]

  • Page 36

    Room Air Conditioner Exploded View Exploded Vie w 554030 159830 135314 147581-1 147581-2 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 Coolin[...]

  • Page 37

    Room Air Conditioner Exploded View Exploded Vie w 554030 159830 135314 147581-1 147581-2 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 2641 1 0 268711-2 237200 238310 W0CZZ 249950 135510 130910 W52106-2 W52106-1 [...]

  • Page 38

    36 Room Air Conditioner Replacement P ar ts List R: Service Parts NOTE) * Please ensure GCSC since these parts may be changed depending upon the buyer's request. (GCSC WEBSITE http://biz.LGservice.com) 130410 BASE ASSEMBLY,SINGLE 130910 CABINET ASSEMBLY,SINGLE 135312 GRILLE ASSEMBLY,FRONT(SINGLE) 135303 GRILLE,INLET 135500 COVER ASSEMBLY,CONTR[...]

  • Page 39

    PART NO WG2405RY7 130410 BASE ASSEMBLY,SINGLE 3041A30001F R 130910 CABINET ASSEMBLY,SINGLE 3091AR6056P R 135312 GRILLE ASSEMBLY,FRONT(SINGLE) 3531A11002B R 135303 GRILLE,INLET 3530A10189A R 135515 COVER ASSEMBLY, CONTROLINDOOR) 3551A30001A R 146812 MOTOR ASSEMBLY,SYNC. 2H01102J R 147581-1 LOUVER,HORIZONTAL 5990A20032A R 147581-2 LOUVER,HORIZONTAL 5[...]

  • Page 40

    PART NO RAD-183A 130410 BASE ASSEMBLY,SINGLE 3041A30001H R 130910 CABINET ASSY,SINGLE 3091AR6056P R 135312 GRILLE ASSY,FRONT(SINGLE) AEB30969401 R 135303 GRILLE ASSY,INLET 3530AR1604A R 1355 ０ 0 COVER,CONTROL(INDOOR) 3551A30015A R 146812 MOTOR ASSEMBLY,SYNC 2H01102J R 147581-1 LOUVER,HORIZONTAL 4758AR7264A R 147581-2 LOUVER,HORIZONTAL 4758AR7278A[...]

  • Page 41

    PART NO(2006) RAD-243A 130410 BASE ASSEMBLY,SINGLE 3041A30001F R 130910 CABINET ASSY,SINGLE 3091AR6056P R 135312 Grille ASSY,Front(SINGLE) AEB30969401 R 135314 Grille ASSY,Inlet 3530AR1604A R 135510 COVER,CONTROL(INDOOR) 3550AR7046D R 146812 Motor Assembly,SYNC 2H01102J R 147581-1 LOUVER,HORIZONTAL 4758AR7264A R 147581-2 LOUVER,HORIZONTAL 4758AR727[...]

  • Page 42

    P/No.: 3828A20887A JULY, 2007 Printed in China[...]