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Related Manuals for LG LWM1430TAS/LW-136
Summary of Contents for LG LWM1430TAS/LW-136
- Page 1 website http://biz.lgservice.com e-mail http://www.lgeservice.com/techsup.html ROOM AIR CONDITIONER SERVICE MANUAL CAUTION - BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS" IN THIS MANUAL. - ONLY FOR AUTHORIZED SERVICE MODEL: LWM1430TAS,BXN/LW-136...
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Page 2: Table Of Contents
CONTENTS 1. PREFACE 1.1 SAFETY PRECAUTIONS..........................3 1.2 INSULATION RESISTANCE TEST.........................3 1.3 SPECIFICATIONS............................3 1.4 FEATURES ..............................4 1.5 CONTROL LOCATIONS ..........................4 2. DISASSEMBLY INSTRUCTIONS 2.1 MECHANICAL PARTS ............................5 2.1.1 FRONT GRILLE .............................5 2.1.2 CABINET..............................5 2.1.3 CONTROL BOX .............................5 2.2 AIR HANDLING PARTS ..........................6 2.2.1 COVER (AT THE TOP) ..........................6 2.2.2 BLOWER..............................6 2.2.3 FAN ................................6... -
Page 3: Preface
Mode [except prevent the customer's exposure to shock POWER OFF]. hazards. 4. The value should be over 1 MΩ. 1.3 SPECIFICATIONS MODELS LWM1430TAS/LW-136 ITEMS POWER SUPPLY 1Ø, 208-230V, 60Hz COOLING CAPACITY (Btu/h) 14,800 INPUT (W) -
Page 4: Features
1.4 FEATURES • Side air-intake, side cooled-air discharge. • Designed for cooling only. • Built in adjustable THERMISTOR. • Powerful and quiet cooling. • Washable one-touch filter. • Slide-in and slide-out chassis for the simple installation and service. • Compact size. •... -
Page 5: Disassembly Instructions
2. DISASSEMBLY INSTRUCTIONS — Before the following disassembly, POWER SWITCH is set to OFF and disconnected the power cord. 2.1 MECHANICAL PARTS 2.1.1 FRONT GRILLE 1. Open the inlet grille upward or downward. 2. Remove the screw which fastens the front grille. 3. -
Page 6: Air Handling Parts
2.2 AIR HANDLING PARTS 2.2.1 COVER (AT THE TOP) 1. Remove the front grille. (Refer to section 2.1.1) 2. Remove the cabinet. (Refer to section 2.1.2) 3. Remove 11 screws which fasten the brace and covers. 4. Remove the covers and the brace. (See Fig. 4) 5. -
Page 7: Shroud
2.2.4 SHROUD 1. Remove the fan. (Refer to section 2.2.3) 2. Remove the 2 screws which fasten the shroud. 3. Remove the shroud. (See Fig. 8) 4. Re-install the component by referring to the removal procedure, above. 2.3 ELECTRICAL PARTS 2.3.1 MOTOR Figure 8 (a) Figure 8 (b) -
Page 8: Power Cord
2.3.4 POWER CORD 1. Remove the control box. (Refer to section 2.1.3) 2. Unfold the control box. (Refer to section 2.3.3) 3. Disconnect the grounding screw from the control box. 4. Disconnect 2 receptacles. 5. Remove a screw which fastens the clip cord. 6. -
Page 9: Refrigeration Cycle
2.4 REFRIGERATION CYCLE CAUTION Discharge the refrigerant system using Freon Recovery System. If there is no valve to attach the recovery system, install one (such as a WATCO A-1) before venting the Freon . Leave the valve in place after servicing the system. 2.4.1 CONDENSER 1. - Page 10 NOTES — Replacement of the refrigeration cycle. 1. When replacing the refrigeration cycle, be sure to 6. Recharge as follows : discharge the refrigerant system using a Freon 1) Refrigeration cycle systems are charged from the recovery System. High-side. If the total charge cannot be put If there is no valve to attach the recovery system, in the High-side, the balance will be put in the install one (such as a WATCO A-1) before venting...
- Page 11 Equipment needed: Vacuum pump, Charging cylinder, Manifold gauge, Brazing equipment. Pinch-off tool capable of making a vapor-proof seal, Leak detector, Tubing cutter, Hand Tools to remove components, Service valve. Figure 17A-Pulling Vacuum Figure 17B-Charging —11—...
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Page 12: Installation
3. INSTALLATION 1/4 Bubble 3.1 HOW TO INSTALL THE UNIT 1. To avoid 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. If the unit receives direct sunlight, build an awning to shade the cabinet. Level 3. -
Page 13: Window Requirements
3.4 WINDOW REQUIREMENTS NOTE: All supporting parts should be secured to firm wood, masonry, or metal. 29" to 41" The models of the specific area don't contain installation feit. 18" min Stool Offset 3.4.1 WINDOW REQUIREMENTS Less 1. This unit is designed for installation in standard than 1 "... -
Page 14: Suggested Tool Requirements
3.6 SUGGESTED TOOL REQUIREMENTS SCREWDRIVER(+, -), RULER, KNIFE, HAMMER, PENCIL, LEVEL 3.5.1 PREPARATION OF CHASSIS Shipping screws 1. Remove the screws which fasten the cabinet at both sides and at the back. Keep these two screws which fasten the cabinet at both sides for later use. 2. -
Page 15: Outside Dimensions
4. TROUBLESHOOTING GUIDE 4.1 OUTSIDE DIMENSIONS 675(770) 4.2 PIPING SYSTEM CONDENSER COIL CAPILLARY TUBE MOTOR COMPRESSOR BLOWER EVAPORATOR COIL Following is a brief description of the important components and their functions in the refrigeration system. Refer to Fig. 20 to follow the refrigeration cycle and the flow of the refrigerant in the cooling cycle. ROOM AIR CONDITIONER CYCLE OF REFRIGERATION EVAPORATOR COILS... -
Page 16: Troubleshooting Guide
4.3 TROUBLESHOOTING GUIDE In general, possible trouble is classified in two causes. 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 Ineffective Cooling Check of cold air circulation... - Page 17 Fails to Start Check of power source. Check of circuit breaker and fuse. Check of control switch Check of control panel. setting. Only compressor fails to Only fan fails to start. start. Improper wiring. Drop of power voltage. Improper thermistor setting Defect of fan motor capacitor.
- Page 18 ELECTRIC PARTS TROUBLESHOOTING GUIDE: Possible Trouble 1 • The unit does not operate. • Check the Fuse. Is the Trans output power the • Check the wiring diagram. same as specified? • Check the Main Is the Trans output power Is shorted the Trans.
- Page 19 Possible Trouble 2 • The compressor does not operate. Is Temp. • Set the Temp. setting to higher Temp. setting set lower than Room Temp.-0.5°C? Is the voltage No.10 Is the voltage N0.7 of Is the Unit for 3 minutes of IC01M 0V? IC01M DC 5V? delay?
- Page 20 • The function of Energy Saver does not operate. Possible Trouble 5 • Set the Knob of SW1 Is the Knob of SW1 to left position. set to left position? • Check the SW1. Is the voltage No.1 of • Check the pattern of CN-DISP1 of Main PCB Main &...
- Page 21 Possible Trouble 7 • It displays abnormally on Display P.W.B Ass'y. • Exchange IC01G. Is the IC01G all right? • Connect connector Is the connection of to CN-DISP1 exactly. CN-DISP1 all right? Does the Q01G, Q02G, Q03G Q04G operate normally •...
- Page 22 ROOM AIR CONDITIONER VOLTAGE LIMITS NAME PLATE RATING MINIMUM MAXIMUM AC 208-230V ±10% AC 187V AC 253V COMPLAINT CAUSE REMEDY Fan motor will not run. No power Check voltage at outlet. Correct if none. Power supply cord Check voltage to rotary switch. If none, check power supply cord.
- Page 23 COMPLAINT CAUSE REMEDY Fan motor noise. If cracked, out of balance, or partially missing, replace it. Blower If cracked, out of balance, or partially missing, replace it. Loose set screw Tighten it. Worn bearings If knocking sounds continue when running or loose, replace the motor.
- Page 24 COMPLAINT CAUSE REMEDY Compressor cycles on Fan motor If not running, determine the cause. Replace if overload. required. Condenser air flow Remove the cabinet, inspect the interior surface restriction of the condenser. If restricted, clean carefully with a vacuum cleaner (do not damage fins) or brush.
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Page 25: Schematic Diagram
5. SCHEMATIC DIAGRAM 5.1 CIRCUIT DIAGRAM LW-136 LWM1430TAS POWER INPUT POWER INPUT WH(BL) BK(BR) WH(BL) BK(BR) (Ribbed) (Plain) (Ribbed) (Plain) GN/YL(GN) GN/YL(GN) THERMISTOR THERMISTOR CN-TH CN-TH1 MOTOR MOTOR OR(BR) OR(BR) OR(BR) OR(BR) GN/YL GN/YL (GN) (GN) CAPACITOR CAPACITOR OR(BR) SYNC OR(BR) SYNC MOTOR... -
Page 26: Electronic Control Device
5.2. ELECTOINC CONTROL DEVICE —26—... -
Page 27: Components Location(For Main P.c.b Asm)
5.3. COMPONENTS LOCATION (FOR MAIN P.C.B ASM) LWM1430TAS LW-136 5.4. COMPONENTS LOCATION (FOR DISPLAY P.C.B ASM) —27—... -
Page 28: Exploded View
6. EXPLODED VIEW 554030 130910 148000 731273 W48602 559010 149980 352390 346811 130410 349600 359012 349480 354210 147582 349001 567502 W48602 267110 554160 249950 135312 263230 550140 W0CZZ 152302 135313 135303 268712 W52106-1 W52106-2 237200 238310 552102 135510 352115 352113 146812 352111 147581-2... -
Page 29: Replacement Parts List
7. REPLACEMENT PARTS LIST R: Service Parts PART NO. LOCATION REMARK DESCRIPTION LW-136 LWM1430TAS 130410 BASE ASSEMBLY, SINGLE 3041A30002B 3041A30002B 130910 CABINET ASSEMBLY, SINGLE 3091AR6057B 3091AR6057B 135312 GRILLE ASSEMBLY, FRONT(SINGLE) 3531A20073C 3531A20073C 135313 GRILLE, INLET 3530A10070A 3530A10070A 135500 COVER, TERMINAL 3550U-L004A 3550U-L004A 135510... - Page 30 August, 2003 P/No.: 3828A20095T Printed in Korea...
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