Related Manuals for LG BWC186MBAB0
Summary of Contents for LG BWC186MBAB0
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Page 1: Room Air Conditioner
Room Air Conditioner SERVICE MANUAL MODEL: BWC186MBAB0 / BWC226NBAB0 (Applied to new Refrigerant R-410A) CAUTION - BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS" IN THIS MANUAL. - ONLY FOR AUTHORIZED SERVICE. -
Page 2: Table Of Contents
CONTENTS 1. PREFACE 1.1 SAFETY PRECAUTIONS .......2 2.4 REFRIGERATION CYCLE.........10 1.2 INSULATION RESISTANCE TEST....2 2.4.1 CONDENSER ........10 1.3 SPECIFICATIONS ..........3 2.4.2 EVAPORATOR ........10 1.4 FEATURES .............4 2.4.3 CAPILLARY TUBE.......10 1.5 CONTROL LOCATIONS .........4 3. TROUBLESHOOTING GUIDE 2. DISASSEMBLY INSTRUCTIONS 3.1 OUTSIDE DIMENSIONS.......13 2.1 MECHANICAL PARTS........5 3.2 PIPING SYSTEM ..........13 2.1.1 FRONT GRILLE ........5... -
Page 3: Specifications
1.3 SPECIFICATIONS SPEC. AT 230V MODELS BWC186MBAB0 BWC226NBAB0 ITEMS POWER SUPPLY 1Ø, 220-240V, 50Hz COOLING CAPACITY (Btu/h) 18,000 21,000 INPUT 2,250 2,730 RUNNING CURRENT 10.1 12.5 REFRIGERANT (R-410A) CHARGE INDOOR (°C) 27(DB) 19(WB) OPERATING TEMPERATURE OUTDOOR (°C) 35(DB) 24(WB) EVAPORATOR... -
Page 4: 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 • Washable one-touch filter. installation and service. • Compact size. 1.5 CONTROL LOCATIONS Part B •... -
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. 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 figure 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 figure 8) 4. Re-install the component by referring to the removal procedure, above. Figure 8 2.3 ELECTRICAL PARTS 2.3.1 MOTOR 1. -
Page 8: 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 figure 11) 5. -
Page 9: 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 10: Refrigeration Cycle
2.4 REFRIGERATION CYCLE CAUTION • This unit is charged with R-410A, pay attention not to charge R-22. 2.4.1 CONDENSER 1. Remove the cabinet. (Refer to section 2.1.2) 2. Remove the brace and the shroud cover. (Refer to section 2.2.1) 3. Remove 6 screws which fasten the condenser. 4. - Page 11 NOTES — Replacement of the refrigeration cycle. 6. Recharge as follows : CAUTION 1) Refrigeration cycle systems are charged from the Do not use the existing charge set for R-22. High-side. If the total charge cannot be put It is necessary to use new charge set for R-410A. in the High-side, the balance will be put in the The pressure of R-410A is 1.6 times higher than suction line through the access valve which you...
- Page 12 Equipment needed: • The tools must be used according to the type of refrigerant. Never use the gauge manifold, charge hose, charge cylinder or vacuum pump with other refrigerants. Always carry out the work with dedicated tools. • 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.
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Page 13: Outside Dimensions
3. TROUBLESHOOTING GUIDE 3.1 OUTSIDE DIMENSIONS 675(770) 3.2 PIPING SYSTEM CONDENSER COIL DRIER CAPILLARY TUBE MOTOR COMPRESSOR MUFFLER MUFFLER BLOWER EVAPORATOR COIL Following is a brief description of the important components and their functions in the refrigeration system. Refer to figure 19 to follow the refrigeration cycle and the flow of the refrigerant in the cooling cycle. ROOM AIR CONDITIONER CYCLE OF REFRIGERATION EVAPORATOR COILS... -
Page 14: Troubleshooting Guide
3.3 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 15 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 16 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 17 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 18 REMEDY COMPLAINT CAUSE Capacitor Test capacitor. Wiring Check the terminals. If loose, repair or replace. Refrigerating system Check the system for a restriction. Air filter Insufficient cooling or If restricted, clean of replace. Exhaust damper door heating Close if open. Unit undersized Determine if the unit is properly sized for the area to be cooled.
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Page 19: Schematic Diagram
4. SCHEMATIC DIAGRAM 4.1 CIRCUIT DIAGRAM POWER INPUT BK(BR) WH(BL) (Plain) (Ribbed) SYNC. M. WIRING DIACRAM ROCKER SWITCH LOCATION NO. DESCRIPTION Q'TY PER SET REMARKS POWER CORD ROTARY SWITCH FAN MOTOR CAPACITOR THERMOSTAT COMPRESSOR —19—... -
Page 20: Exploded View
5. EXPLODED VIEW 130910 554031 352390 148000 W48602 559010 135515 149980 130410 346811 559012 354210 349480 349001 W48602 147582 349600 554160 249950 135312 269310 550140 W0CZZ 152302 W52106 W52106 135313 552102 137215 266002 135500 146812 352113 149410 147581-2 266003 147581-1 264110 35211A —20—... -
Page 21: Replacement Parts List
6. REPLACEMENT PARTS LIST • MODEL: BWC186MBAB0/BWC226NBAB0 PART NO. LOCATION DESCRIPTION REMARK BWC186MBAB0 BWC226NBAB0 130410 BASE ASSEMBLY.SINGLE AAN32860201 AAN32860602 130910 CABINET ASSEMBLY,SINGLE ABQ32714903 3091AR6056N 135312 GRILLE ASSEMBLY,FRONT AEB33008902 AEB33008902 135313 GRILLE,INLET 3530A10189A 3530A10189A 135500 COVER,CONTROL BOX 3551A30015A 3551A30015A 135515 COVER ASSEMBLY,TOP (INDOOR) - Page 22 PART NO. LOCATION DESCRIPTION REMARK BWC186MBAB0 BWC226NBAB0 554160 COMPRESSOR SET 2520UTEP2AA 2520UXFP2CA 559010 FAN ASSEMBLY,AXIAL 5900AR1330B 5900AR1330B 35211A TUBE ASSEMBLY,SUCTION AJR32971903 5211A10094H W0CZZ CAPACITOR 2A00986Y 2A00986Y W48602 CLAMP,SPRING 3H02932C 3H02932C W52106-1 TUBE,EVAPORATOR 5210A30009X 5210A30144U W52106-2 TUBE,EVAPORATOR 5210A30009W 5210A30144V NOTE) Please ensure GCSC since these parts may be changed depending upon the buyer's request.
- Page 23 July, 2007 P/No.: 3828A20529G Printed in Thailand...