Goldstar R1801H Service Manual
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Goldstar R1801H Service Manual

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ROOM AIR CONDITIONER
SERVICE MANUAL
CAUTION
- BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
- ONLY FOR AUTHORIZED SERVICE
MODELS: R1402/R1802/R1801H/M1802/R2102/R2402
R1803/R1804/R1803H/M1803R/R2103/R2403
LWM1836BCG/LWM1836BAG/LWM1836BAS/LWC243NSAB0
Y5USC18-6A/Y5USC24-6A/LWN2432BCG/LWN2432BAG
website http://biz.LGservice.com
e-mail http://www.LGEservice.com/techsup.html

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  • Page 1 ROOM AIR CONDITIONER SERVICE MANUAL CAUTION - BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. - ONLY FOR AUTHORIZED SERVICE MODELS: R1402/R1802/R1801H/M1802/R2102/R2402 R1803/R1804/R1803H/M1803R/R2103/R2403 LWM1836BCG/LWM1836BAG/LWM1836BAS/LWC243NSAB0 Y5USC18-6A/Y5USC24-6A/LWN2432BCG/LWN2432BAG...

  • Page 2: Table Of Contents

    CONTENTS 1. PREFACE 1.1 SAFETY PRECAUTIONS .......2 2.4 REFRIGERATION CYCLE......15 1.2 INSULATION RESISTANCE TEST....2 2.4.1 CONDENSER ........15 1.3 SPECIFICATIONS ..........3 2.4.2 EVAPORATOR ........15 1.4 FEATURES .............7 2.4.3 CAPILLARY TUBE.......15 1.5 CONTROL LOCATIONS .........7 3. INSTALLATION 2. DISASSEMBLY INSTRUCTIONS 3.1 HOW TO INSTALL THE UNIT ......18 2.1 MECHANICAL PARTS........10 3.2 HOW TO USE THE REVERSIBLE INLET GRILLE ..18 2.1.1 FRONT GRILLE ........10...

  • Page 3: Specifications

    1.3 SPECIFICATIONS 1.3.1 FOR R1402/R1802/R2102/R2402 MODELS R1402 R1802 R2102 R2402 REMARK ITEMS POWER SUPPLY 1Ø, 115V, 60Hz 1Ø, 208/230V, 60Hz COOLING CAPACITY (Btu/h) 14,000 17,500/ 18,000 20,500/21,000 23,500/24,000 INPUT 1,380 1,800/ 1,850 2,410/2,470 2,760/2,820 RUNNING CURRENT (A) 12.0 9.0/ 8.3 11.8/10.8 13.7/12.7 REFRIGERANT (R-22) CHARGE(g)
  • Page 4 1.3.2 FOR R1803/R1804/R2103/R2403/LWC243NSAB0 R1804 R2403/Y5USC24-6A MODELS R1803 LWM1836BAG/BAS/BCG R2103 LWN2432BCG/BAG REMARK ITEMS Y5USC18-6A LWC243NSAB0 POWER SUPPLY 1Ø, 208/230V, 60Hz COOLING CAPACITY (Btu/h) 17,500/ 18,000 20,500/21,000 23,500/24,000 INPUT 1,800/ 1,850 2,410/2,470 2,760/2,820 RUNNING CURRENT 9.0/ 8.3 11.8/10.8 13.7/12.7/12.9 REFRIGERANT (R-22) CHARGE(g) 750(26.5 OZ) 710(25.0 OZ) 980(34.6 OZ)
  • Page 5 1.3.3 FOR R1801H MODELS R1801H R1803H REMARK ITEMS 1Ø, 208/ 230V, 60Hz POWER SUPPLY 17,500/ 18,000 CAPACITY (Btu/h) 1,940/ 2,000 1,800/1,850 INPUT COOLING 9.6/ 9.0 9.0/8.3 RUNNING CURRENT (A) E.E.R. (Btu/W.h) CAPACITY (Btu/h) 9,800/ 12,000 HEATING INPUT 3,100/ 3,670 RUNNING CURRENT (A) 15.0/ 16.0...
  • Page 6 1.3.4 FOR M1802/M1803R/M1804R MODELS M1802 M1803R REMARK ITEMS POWER SUPPLY 1Ø, 208/230V, 60Hz COOLING CAPACITY (Btu/h) 17,500/ 18,000 INPUT 1,800/ 1,850 RUNNING CURRENT (A) 9.0/ 8.3 REFRIGERANT (R-22) CHARGE(g) 800(28.2 OZ) 750(26.5 OZ) INDOOR (°C) 26.7(DB) 19.4(WB) OPERATING TEMPERATURE OUTDOOR (°C) 35(DB) 23.9(WB) EVAPORATOR 3 ROW 15 STACKS...

  • Page 7: Features

    1.4 FEATURES • Designed for cooling only. • Side air-intake, side cooled-air discharge. • Powerful and quiet cooling. • Built in adjustable THERMOSTAT. • Slide-in and slide-out chassis for the simple installation • Washable one-touch filter. and service. • Compact size. •...
  • Page 8 1.5.2 COOLING AND HEATING MODEL • CAUTION When the air conditioner has been performing its cooling operation and is turned off or set to the fan position, wait at least 3 minutes before resetting to the cooling operation again. • THERMOSTAT Turn the thermostat control to the desired setting.
  • Page 9 1.5.3 COOLING ONLY MODEL WITH TOUCH TYPE Precaution: The Remote Control unit will not function properly if strong light strikes the sensor window of the air conditioner or if there are obstacles between the Remote Control unit and the air conditioner. POWER BUTTON Operation starts, when this button is pressed and stops when you press the button again.

  • Page 10: 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 11: 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 12: Fan

    2.2.3 FAN 1. Remove the cabinet. (Refer to section 2.1.2) 2. Remove the brace and shroud cover. (Refer to section 2.2.1) 3. Remove the side cover with 2 screws. (See Fig. 8(b)) 4. Remove the 5 or 6 screws which fasten the condenser.

  • Page 13: Capacitor

    2.3.3 CAPACITOR 1. Remove the control box. (Refer to section 2.1.3) 2. Remove the screw and knobs which fasten the display panel. 3. Disconnect the 2 leads from the rocker switch and remove the panel. 4. Remove a screw and unfold the control box. (See Fig.

  • Page 14: Rotary Switch

    2.3.6 ROTARY SWITCH 1. Remove the control box. (Refer to section 2.1.3) 2. Unfold the control box. (Refer to section 2.3.3) 3. Remove 2 screws which fasten the rotary switch. 4. Disconnect all the leads of the rotary switch terminals. 5.

  • Page 15: 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 16 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 17 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 19A-Pulling Vacuum Figure 19B-Charging —17—...

  • Page 18: 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. Level If the unit receives direct sunlight, build an awning to shade the cabinet.

  • Page 19: Window Requirements

    3.3 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 kit. 18" min Stool Offset 3.3.1 WINDOW REQUIREMENTS Less 1. This unit is designed for installation in standard double than 1 "...

  • Page 20: Suggested Tool Requirements

    3.5 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 21: Cabinet Installation

    3.6 CABINET INSTALLATION Sill 1. Open the window. Mark a line on the center of the window Bracket Support Bracket stool between the side window stop moldings. Carriage Lock nut Loosely attach the sill bracket to the support bracket using Bolt (M-Screw) the carriage bolt and the lock nut.
  • Page 22 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. 29) Figure 29 7.

  • Page 23: 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. 35 to follow the refrigeration cycle and the flow of the refrigerant in the cooling cycle. ROOM AIR CONDITIONER CYCLE OF REFRIGERATION EVAPORATOR COILS...

  • Page 24: 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 25 Fails to Start Check of power source. Check of circuit breaker and fuse. Check of control switch Gas leakage of feeler bulb setting. of thermostat Check of control switch. Only compressor fails to Only fan fails to start. start. Improper wiring. Drop of power voltage.
  • Page 26 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. Replace cord if circuit is open. Rotary switch Check switch continuity. Refer to wiring diagram for terminal identification.
  • Page 27 COMPLAINT CAUSE REMEDY Compressor will not run, Voltage Check voltage. See the limits on the preceding. but fan motor runs. page. If not within limits, call an electrician. Wiring Check the wire connections, if loose, repair or replace the terminal. If wires are off, refer to wiring diagram for identification, and replace.
  • Page 28 REMEDY COMPLAINT CAUSE Capacitor Compressor cycles Test capacitor. on overload. Wiring Check the terminals. If loose, repair or replace. Refrigerating system Check the system for a restriction. Air filter If restricted, clean of replace. Insufficient cooling or Exhaust damper door heating Close if open.

  • Page 29: Schematic Diagram

    5. SCHEMATIC DIAGRAM 5.1 CIRCUIT DIAGRAM • MODEL : R1402 POWER INPUT WH(BL) BK(BR) (Plain) (Ribbed) GN(GN/YL) MOTOR T/BLOCK COMP. SYNC CAPACITOR THERMOSTAT MOTOR WH(BR) BK(BR) ROCKER SWITCH WIRING DIAGRAM 3584AR2206V Q'TY DESCRIPTION PER SET POWER CORD ROTARY SWITCH FAN MOTOR CAPACITOR THERMOSTAT COMPRESSOR...
  • Page 30 • MODEL : R1802/R2102/R2402/LWN2432BAG/LWC243NSAB0 POWER INPUT BK(BR) WH(BL) (Plain) (Ribbed) SYNC. M. WIRING DIACRAM ROCKER SWITCH Q'TY DESCRIPTION PER SET POWER CORD ROTARY SWITCH FAN MOTOR CAPACITOR THERMOSTAT COMPRESSOR SYNCHRONOUS MOTOR —30—...
  • Page 31 • MODEL : R1803/R1804/R2103/R2403, LWM1836BAG/BAS/BCG, Y5USC18-6A, Y5USC24-6A, LWN2432BCG POWER INPUT BK(BR) WH(BL) (Plain) (Ribbed) SYNC. M. (BR) WH(BR) WIRING DIACRAM ROCKER SWITCH Q'TY DESCRIPTION PER SET POWER CORD ROTARY SWITCH FAN MOTOR CAPACITOR THERMOSTAT COMPRESSOR SYNCHRONOUS MOTOR —31—...
  • Page 32 • MODEL :R1801H/R1803H POWER INPUT BK(BR) WH(BL) (Plain) (Ribbed) ROTARY SWITCH GN(GN/YL) RD(BL) BL(RD) BL(RD) MOTOR OR(BR) CAPACITOR OR(BR) WH(BR) BK(BR) THERMOSTAT ROCKER SWITCH SYNC. MOTOR COMP BR(YL) O.L.P FUSE LINK HEATER BI-METAL WIRING DIAGRAM 3854AR3563D THERMOSTAT Q'TY DESCRIPTION PER SET...
  • Page 33 • MODEL :M1802/M1803R FUSE 250V T2A 3854A20003J WIRING DIAGRAM Q'TY DESCRIPTION PER SET POWER CORD FAN MOTOR CAPACITOR COMPRESSOR MAIN PWB ASM DISPLAY PWB ASM THERMISTOR ASM CONNECTOR FUSE —33—...

  • Page 34: Electronic Control Device

    5.2. ELECTOINC CONTROL DEVICE • MODEL : M1802 —34—...
  • Page 35 • MODEL : M1803R —35—...

  • Page 36: Components Location(For Main P.c.b Asm)

    5.3. COMPONENTS LOCATION (FOR MAIN P.C.B ASM) • MODEL : M1802 • MODEL : M1803R CN-TH1 IC01A OSC01B Q01E CN-BK CN-BL CN-RD PWB ASS'Y: 6871A10013 PWB P/NO: 125V, 2A BUZZER 6870A90041A 250V, T2A CO1J R01J CN - SYNC FUSE C01D D05D D04D CN - WORK...

  • Page 37: Components Location(For Display P.c.b Asm)

    5.4. COMPONENTS LOCATION (FOR DISPLAY P.C.B ASM) • MODEL : M1802 • MODEL : M1803R 6871A2011B PWB P/NO:6870A90004D-3 —37—...

  • Page 38: Exploded View

    6. EXPLODED VIEW • MODEL: R1402/R1802/R2102/R1801H/M1802/R1803/R1804/R2103/R1803H/M1803R LWM1836BAG/LWM1836BAS/Y5USC18-6A/LWM1836BCG 554030 130910 148000 352390 W48602 559010 149980 130410 346811 359012 349480 354210 349600 349001 W48602 149582 249950 249950 554160 269310 269310 W0CZZ W0CZZ 550140 135510 135510 137215 137215 146812 146812 552101 149410 149410...
  • Page 39 • MODEL: R2402/R2403/Y5USC24-6A/LWN2432BCG/LWN2432BAG/LWC243NSAB0 148000 559011 130910 W48602 149980 346811 349600 554031 359012 349480 352390 149582 249950 554160 W48602 349001 130410 W0CZZ 354210 269310 137215 266003 135510 135312 266002 146812 152302 149410 264110 352115-1 552102 135313 552111 352115 552111 35211A 352115-2 352111 352113 352113...

  • Page 40: Replacement Parts List

    7. REPLACEMENT PARTS LIST R: Service Parts PART NO. LOCATION DESCRIPTION REMARK R1402 R1802 R1803 R1804 R2102 R2103 130410 BASE ASSEMBLY, SINGLE 3041A30002B 3041A30001H 130910 CABINET ASSEMBLY, SINGLE 3091AR6057A 3091AR6056A 135312 GRILLE ASSEMBLY, FRONT(SINGLE) 3531A20005C 135313 GRILLE ASSEMBLY, INLET 3530AR1604A 135510 COVER ASSEMBLY, CONTROL 3551A30015A 137215 PANEL ASSEMBLY, CONTROL...
  • Page 41 R: Service Parts PART NO. LOCATION DESCRIPTION REMARK Y5USC18-6A LWM1836BAS LWM1836BAG LWM1836BCG 130410 BASE ASSEMBLY,SINGLE 3041A30002B 130910 CABINET ASSEMBLY,SINGLE 3091AR6057B 135303 GRILLE,INLET 3530A10005A 3530A10070A 3530AR1604A 135312 GRILLE ASSEMBLY,FRONT(SINGLE) 3531A20073H 3531A20073E 3531A20005L 3531A20005A 135510 COVER ASSEMBLY,CONTROL(SINGLE) 3551A30015A 137215 PANEL ASSEMBLY,CONTROL 3721A20058E 3721A20002B 146812 MOTOR ASSEMBLY,SYNC.
  • Page 42 R: Service Parts PART NO. LOCATION DESCRIPTION REMARK R1801H R1803H LWC243NSAB0 130410 BASE ASSEMBLY, SINGLE 3041A30002B 3041A30002B 3041A30001R 130910 CABINET ASSEMBLY, SINGLE 3091AR6057A 3091AR6057A 3091AR6056B 135312 GRILLE ASSEMBLY, FRONT (SINGLE) 3531A20005H 3531A20005H 3531A20073E 135313 GRILLE, INLET 3530AR1603A 3530AR1603A 3530A10070A 135510...
  • Page 43 R: Service Parts PART NO. LOCATION DESCRIPTION REMARK M1802 M1803R 130410 BASE ASSEMBLY, SINGLE 3041A30002B 130910 CABINET ASSEMBLY, SINGLE 3091AR6057A 135312 GRILLE ASSEMBLY, FRONT (SINGLE) 3531A20005C 135313 GRILLE ASSEMBLY, INLET 3530AR1604A 135510 COVER ASSEMBLY, CONTROL 3550AR7245A 249950 PANEL ASSEMBLY, CONTROL 4995A20045W 4995A20100X 146812...
  • Page 44 R: Service Parts PART NO. LOCATION DESCRIPTION REMARK R2402 R2403 Y5USC24-6A LWN2432BCG LWN2432BAG 130410 BASE ASSEMBLY, SINGLE 3041A30001R 130910 CABINET ASSEMBLY, SINGLE 3091AR6056A 3091AR6056B 135312 GRILLE ASSEMBLY, FRONT (SINGLE) 3531A20005C 3531A20005B 3531A20005A 3531A20005L 135313 GRILLE ASSEMBLY, INLET 3530AR1604A 3531A20073H 3530AR1604A 3530AR1604A 135510 COVER ASSEMBLY, CONTROL 3551A30015A 137215 PANEL ASSEMBLY, CONTROL...
  • Page 45 MEMO —45—...
  • Page 46 MEMO —46—...
  • Page 47 January, 2005 P/No.: 3828A20140A Printed in Korea...

This manual is also suitable for:

R1802R1402M1802R2102R2402 r1803R1804 ... Show all

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