Page 2 - TABLE OF CONTENTS
2 Room Air Conditioner Air Conditioner Service Manual TABLE OF CONTENTS Safety Precautions ..........................................................................................................................................3 Dimensions .............................................................
Page 3 - Safety Precautions; This symbol indicates the possibility of death or serious injury.; WARNING; Installation; Do not use damaged power cord plugs, or a; • There is risk of fire or electric shock.; Always use the power plug and socket with; • There is risk of electric shock.; Be sure to follow the instruction.
Service Manual 3 Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions mustbe followed. ■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness isclassified by the following indications...
Page 4 - Do not modify or extend the power cord.; • There is risk or fire or electric shock.; Be cautious when unpacking and installing; • Sharp edges could cause injury. Be especially careful; Do not store or use flammable gas or com-; • There is risk of fire or failure of product.; Be sure the installation area does not deterio-; • If the base collapses, the air conditioner could fall with; Gasolin
4 Room Air Conditioner Safety Precautions Do not modify or extend the power cord. • There is risk or fire or electric shock. Do not install, remove, or re-install the unit by yourself. • There is risk of fire, electric shock, explosion, or injury. Be cautious when unpacking and installing the produc...
Page 5 - Dimensions; Outside Dimensions; This symbol alerts you to the risk of electric shock.; Symbols Used in this Manual; Service Manual 5
Dimensions Dimensions 770 660 82 4 W mm(inch) 660(26") 660(26") H mm(inch) 428(16 27 / 32 ") 428(16 27 / 32 ") D mm(inch) 770(30 5 / 16 ") 770(30 5 / 16 ") Model Dimension 18K Btu 24K Btu Outside Dimensions This symbol alerts you to the risk of electric shock. This symbol ale...
Page 6 - Product Specifications
6 Room Air Conditioner Specfications Product Specifications POWER SUPPLYCOOLING CAPACITYINPUT E.E.R REFRIGERANT (R-22) CHARGE(g)OPERATING INDOOR(°C) TEMPERATURE OUTDOOR(°C) EVAPORATOR CONDENSER FAN, INDOORFAN, OUTDOORFAN SPEEDS, FAN/COOLINGFAN MOTOROPERATION CONTROLROOM TEMP. CONTROLAIR DIRECTION CO...
Page 8 - Select the Best Location; CAUTION: All side louvers of the cabinet
Service Manual 8 Installation Installation Select the Best Location Installation Check 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 c...
Page 9 - Window Requirements
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 from26" to 41". The top and bottom...
Page 10 - Suggested Tool Requirements; PREPARATION OF CHASSIS
Service Manual 10 Installation Suggested Tool Requirements PREPARATION 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 bracingthe cabinet. 3. Cut the window sash s...
Page 11 - Cabinet Installation; CAUTION: Do not drill a hole in the
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 bracketusing the carriage bolt and the lock nut. 2. Attach the sill bracket to the window...
Page 13 - 3 Room Air Conditioner; Cooling Only Model; Operation; Features
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 positionin or...
Page 14 - Cooling Only Model with Remote Control and Touch Type; REMOTE CONTROL; PRECAUTION: The Remote Control unit will not; AUTO RESTART
Service Manual 14 Operation 2. Cooling Only Model with Remote Control and Touch Type 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 m...
Page 15 - Disassembly; Mechanical Parts
15 Room Air Conditioner Disassembly Disassembly Mechanical Parts — 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...
Page 16 - Air Handling Parts
Service Manual 16 Disassembly Air Handling Parts 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 ...
Page 17 - 7 Room Air Conditioner; Electrical Parts
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 co...
Page 18 - Synchronous Motor
Service Manual 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...
Page 19 - CAUTION: Discharge the refrigerant; Recovery; Leave the valve in place after servicing; Refrigerating Cycle
19 Room Air Conditioner Disassembly CAUTION: 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 servicing the system. 13. Condenser 1. Re...
Page 20 - ment is used, just crack valves A
Service Manual 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 ventingthe Freon...
Page 22 - Schematic Diagram; Electronic Control Device
Service Manual 22 Schematic Diagram Schematic Diagram Electronic Control Device 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 D03...
Page 23 - Wiring Diagram
23 Room Air Conditioner Schematic Diagram Wiring Diagram WH(BL) POWER INPUT BK(BR) (Ribbed) (Plain) GN/YL (GN) GN/YL(GN) THERMISTOR BK BK BL RD BL RD CN-TH1 YL YL OR(BR) OR(BR) OR(BR) SYNC MOTOR R Y-LO R Y-HI CN-W ORK CN-SYNC CN-DISP DISPLA Y P .W .B ASM RY-SYNC 250V/T2A(115V/T2A) TRANS FORMER ZNR R...
Page 24 - Components Location
Service Manual 24 Schematic Diagram Components Location Main P.W.B Assembly Display P.W.B Assembly
Page 25 - Troubleshooting Guide; Piping System; ROOM AIR CONITIONER
25 Room Air Conditioner Troubleshooting Guide Troubleshooting Guide Piping System Figure 34 is a brief description of the important components and their function in what is called the refrigerationsystem. This will help you to understand the refrigeration cycle and the flow of the refrigerant in the...
Page 26 - Unit runs but poor cooling.
Service Manual 26 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 AirConditioning caused by a defect in the refrigeration circuit and imprope...
Page 28 - Electrical Parts Troubleshooting Guide
Service Manual 28 Troubleshooting Guide Electrical Parts Troubleshooting 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? I...
Page 32 - Room Air Conditioner Voltage Limits
Service Manual 32 Troubleshooting Guide COMPLAINT CAUSE REMEDY Check voltage at outlet. Correct if necessary. Check voltage to rotary switch. If none, check powersupply cord. Replace cord if circuit is open. Check switch continuity. Refer to wiring diagram forterminal identification. Replace switch ...
Page 35 - Exploded View; Cooling Model
35 Room Air Conditioner Exploded View Exploded View 159830 135 314 147581-1 147581-2 135312 552111 554031 148000 749750 349600 346811 130410 354210 147582 349001 359012 349480 W48602 W48602 55901 1 267110 149980 550140 554160 352113 35211A 552113 567480 146812 W0CZZ 249950 1355 1 0 130910 268711-1 2...
