Air Conditioner Service Manual TABLE OF CONTENTS Preface ................3 Refrigerating Cycle..........14 Electronic Type ............3 Condenser ............14 Mechanical Type............3 Evaporator............14 Safety Precautions.............4 Capillary tube ............15 Product Specifications ..........6 Installation ..............17 Operation ..............8 How to Install the unit ..........17 Features ..............8 Checking installation..........17 Control Locations ............8 How to drain ............17 Mechanical type model ........8...
Preface Preface SERVICE MANUAL This provides various service information, including the mechanical and electrical parts etc. This room air conditioner was manufactured and assembled under a strict quality control system. The refrigerant is charged at the factory. Be sure to read the safety precautions prior to servicing the unit. Electronic Type 1.
Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. I Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications. WARNING This symbol indicates the possibility of death or serious injury.
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Safety Precautions I Installation Install the product so that the noise or hot wind Keep level parallel in installing the product. from the outdoor unit may not cause any damage to the neighbors. • Otherwise, it may cause vibration or water leakage. •...
Operation Operation Features • Designed for COOLING ONLY. • Built-in adjustable THERMOSTAT or THERMISTOR • Powerful and whispering cooling. • Washable one-touch filter • Simple installation and service. • Compact size • Low air-intake, top cooled-air discharge. • Reliable and efficient rotary compressor is equipped. Control Locations MECHANICAL TYPE MODEL •...
Operation ELECTRONIC TYPE MODEL Power Temp °C Fan Speed Timer Mode Precaution: The Remote Control unit will not function properly if bright light strikes the sensor window of the air conditioner or if there are obstacles between the Remote Control unit and the air conditioner. 1.
Disassembly Instructins Disassembly Instructions — Before the following disassembly, set POWER SWITCH to OFF and disconnect the power cord. Mechanical Parts FRONT GRILLE 1. Open the inlet grille downward and remove the air filter. 2. Remove the screws which fasten the front grille.(See Figure 1) 3.
Disassembly Instructins Air Handling Parts AIR GUIDE AND TURBO FAN 1. Remove the front grille. (Refer to section 2.1.1) 2. Remove the cabinet. (Refer to section 2.1.2) 3. Remove the control box. (Refer to section 2.1.3) 4. Remove the 4 screws which fasten the brace. 5.
Disassembly Instructins SHROUD 1. Remove the fan. (Refer to section 2.2.2) 2. Remove the shroud. (See Figure 8) 3. Re-install the components by referring to the removal procedure, above. Figure 8 Electrical Parts OVERLOAD PROTECTOR 1. Remove the cabinet. (Refer to section 2.1.2) 2.
Disassembly Instructins CAPACITOR 1. Remove the cabinet. (Refer to section 2.1.2) 2. Remove the screw and the clamp which fastens the capacitor. 3. Disconnect all the leads of capacitor terminals. 4. Re-install the components by referring to the removal procedure, above. (See Figure 11) Figure 11 POWER CORD 1.
Disassembly Instructins MOTOR 1. Remove the cabinet. (Refer to section 2.1.2) 2. Remove the turbo fan. (Refer to section 2.2.1) 3. Remove the fan. (Refer to section 2.2.2) 4. Remove the 4 screws which fasten the motor from the Motor Mount. (See Figure 15) 5.
Disassembly Instructins CAPILLARY TUBE 3. Remove the capillary tube. 1. Remove the cabinet. (Refer to section 2.1.2) 4. Re-install the components by referring to notes. 2. After discharging the refrigerant completely, unbraze the interconnecting tube at the capillary tube.(See caution above) NOTES —...
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Disassembly Instructins Equipment needed: Vacuum pump, Charging cylinder, Manifold gauge, Brazing equipment. Pin-off tool capable of making a vapor-proof seal, Leak detector, Tubing cutter, Hand Tools to remove components, Service valve. Figure 18B-Charging Figure 18A-Pulling Vacuum 16 Room Air Conditioner...
Installation Installation HOW TO INSTALL THE UNIT 1. To avoid vibration and noise, make sure the unit is Awning Fence installed securely and firmly. 2. Install the unit where the sunlight does not shine directly Cooled air on the unit. Heat If the unit receives direct sunlight, build an awning to radiation...
Installation WINDOW REQUIREMENTS 1. These instructions are for a horizontal sliding or a For installation in a casement window, the window casement window. frame assembly and the side of the building must be adequate to support the weight of the air conditioner. 2.
Installation HORIZONTAL SLIDING WINDOW INSTALLATION Bolt 1. Loosely attach the Support Bracket to the bottom of Bracket Bracket using Bolts, Washers, and Nuts. Attach the Leveling bolt and nut. (See Figure 22) Washer Leveling Bolt & Nut Support Bracket Figure 22 2.
Installation 8. Slide Curtain into Curtain Frame. Slide Curtain Frame assembly into side Guides of the Air Conditioner cabi- Curtain Frame net. Make sure Curtain is firmly enclosed on all sides by the Frame. (See Figure 27) Figure 27 Curtain 9.
Troubleshooting Guide Troubleshooting Guide OUTSIDE DIMENSIONS Unit: mm(inchs) 607(23 368(14 PIPING SYSTEM CONDENSER COIL CAPILLARY TUBE MOTOR COMPRESSOR TURBO FAN EVAPORATOR COIL Following is a brief description of the important components and their functions in the refrigeration system. Refer to Fig. 31 to follow the refrigeration cycle and the flow of the refrigerant in the cooling cycle. ROOM AIR CONITIONER CYCLE OF REFRIGERATION EVAPORATOR COILS...
Troubleshooting Guide Troubleshooting 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.
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Troubleshooting Guide Fails to Start Check of power source. Check circuit breaker and fuse. (Rotary Type Model) Check of control switch Gas leakage of feeler bulb (Micom Type Model) setting. of thermostat Check of control switch. Compressor only fails to Fan only fails to start.
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Troubleshooting Guide I ELECTRICAL PARTS TROUBLESHOOTING GUIDE: LV080CE, LV100CE, LV120CE, HBLG1004C Possible Trouble 1 The unit does not operate. • Check the Fuse. Is the Trans input power • Check the wiring diagram. AC 115V? • Check the Main Is the Trans output power Is the Trans.
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Troubleshooting Guide Possible Trouble 2 The compressor does not operate. Is setting • Select the setting Temp. to lower Number. Temp. set lower than Room Temp.-1°F? Does the Is the voltage No.10 Is the voltage N0.9 of compressor activate IC01M DC 12V? of IC01M 0V? after 3 minutes? •...
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Troubleshooting Guide Possible Trouble 4 FAN does not operate. Is the voltage NO.1 or 2 or 4 • Exchange IC01M. of IC01M DC 12V? Is the voltage NO.16 or 15 or 13 • Exchange IC01M. of IC01M 0V? • Check the RY-Hi or RY-Med or RY-Lo.
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Troubleshooting Guide Possible Trouble 6 Remote controller does not operate. Is the voltage of Battery • Exchange the battery. about over 2.3V? Is the voltage No.10 • Check the PCB pattern. of CN-AC/DC on DC PCB Ass'y DC 5V? • Connect connector to Is the connection of CN-AC/DC completely.
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Troubleshooting Guide Possible Trouble 8 It displays abnormally on DC PCB Ass’y. • Exchange IC01G, Are the IC01G and IC02G IC02G. all right? • Connect connector Is the connection of to CN-AC/DC exactly. CN-AC/DC all right? Does the IC03G • Exchange IC03G. operate normally on AC PCB Ass'y? •...
Troubleshooting Guide Room Air Conditioner Voltage Limits NAME PLATE RATING MINIMUM MAXIMUM 115V ±10% 103.5V 126.5V MECHANICAL TYPE MODEL 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.
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Troubleshooting Guide COMPLAINT CAUSE REMEDY Compressor will not run, Thermostat Check the position of knob If not at the coldest set- but fan motor runs. ting, advance the knob to this setting and restart unit. Check continuity of the thermostat. Replace thermo- stat if circuit is open.
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Troubleshooting Guide ELECTRONIC TYPE MODEL COMPLAINT CAUSE REMEDY Fan motor will not run. No power Check voltage at outlet. Correct if voltage is missing. Power supply cord Check voltage to connector of CN-PWR and 3 port of comp-relay. If none, check power supply cord. Replace cord if circuit is open.
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Troubleshooting Guide COMPLAINT CAUSE REMEDY Compressor will not run, Thermistor Check the status the setting temperature if not lower but fan motor runs. than room temperature, please decrease the setting temperature. Check continuity of the thermostat. Replace thermo- stat if circuit is open. Capacitor (Discharge Check the capacitor.
Schematic Diagram Schematic Diagram Circuit Diagram I MODEL : LC6000, LC1000Y3, LC1200Y3, LEA0610ACL, LEA1010ACLY3, LEA1210ACL, HBLG1000CY3 S: Service Parts N: Non Service Parts PART NO. LOCATION Q'TY LC1000Y3 DESCRIPTION LC6000 LC1200Y3 PER SET MARKS LEA1010ACLY3 LEA0610ACL LEA1210ACL HBLG1000CY3 POWER CORD 6411A20011L 6411A20011N 6411A20011P...
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Schematic Diagram I MODEL : LC8000, LC8000Y4, LEA0810ACL S: Service Parts N: Non Service Parts PART NO. LOCATION Q'TY DESCRIPTION MARKS PER SET LC8000/LEA0810ACL LC8000Y4 POWER CORD 6411A20011L ROTARY SWITCH 2H00598E FAN MOTOR 4681A20069A CAPACITOR 6120AR2359H 0CZZA20007L THERMOSTAT 2H01109M 2H01109Q COMPRESSOR 2520UAGC2AA 5416A90007D...
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Schematic Diagram I MODEL : LC6000Y4, LC1000Y4, LC1200Y4 S: Service Parts N: Non Service Parts PART NO. LOCATION Q'TY DESCRIPTION PER SET MARKS LC6000Y4 LC1000Y4 LC1200Y4 POWER CORD 6411A20011L 6411A20011N 6411A20011P ROTARY SWITCH 2H00598E FAN MOTOR 4681A20069B 4681A20069C CAPACITOR 6210AR2359V 6120AR2194P 0CZZA20001N THERMOSTAT...
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Schematic Diagram I MODEL : LV100CE, HBLG1004C CN-MOTOR CN-DISP1 CN-MAIN1 GN/YL CN-MAIN2 CN-DISP2 MOTOR DISPLAY PCB ASSEMBLY CAPACITOR CN-TH1 POWER TRANS CN-PWR SWITCH DC12V CN-12V FUSE Ribbed 250V/T2A (115V/T2A) H.V. CN-HVB ASSEMBLY Plain GN/YL RY-COMP COMP. MAIN PCB ASSEMBLY AIR FILTER ASSEMBLY 3854AR3629N S: Service Parts...
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Schematic Diagram I MODEL : LV080CE, LV120CE CN-MOTOR CN-MOTOR CN-DISP1 CN-MAIN1 CN-MAIN1 CN-DISP1 GN/YL CN-MAIN2 CN-DISP2 GN/YL MOTOR MOTOR CN-MAIN2 CN-DISP2 DISPLAY PCB DISPLAY PCB ASSEMBLY ASSEMBLY CAPACITOR CAPACITOR POWER CN-TH1 POWER CN-TH1 TRANS TRANS CN-PWR CN-PWR SWITCH DC12V SWITCH DC12V CN-12V FUSE...
Electronic Control Device Electronic Control Device I MODEL : LV080CE, LV100CE, LV120CE, HBLG1004C Option2 LED out2 Option1 LED out1 Pipe TH LED out0 Room TH KEY1 KEY0 VAref FILTER Osc out Osc in SEG-g /Reset SEG-f SEG-e TEST SEG-d 38 Room Air Conditioner...