ORDER NO. RAC0310006C1 Service Manual Room Air Conditioner CW-XC184HU CW-XC244HU WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
CONTENTS 1. PREFACE 1.1 SAFETY PRECAUTIONS..........................3 1.2 INSULATION RESISTANCE TEST.........................3 1.3 SPECIFICATIONS............................3 1.4 ABOUT THE CONTROLS ON THE AIR CONDITIONER ................4 2. DISASSEMBLY INSTRUCTIONS 2.1 MECHANICAL PARTS ............................6 2.1.1 FRONT GRILLE .............................6 2.1.2 CABINET..............................6 2.1.3 CONTROL BOX .............................6 2.2 AIR HANDLING PARTS ..........................7 2.2.1 COVER (AT THE TOP) ..........................7 2.2.2 TURBO..............................7 2.2.3 FAN ................................7...
1.4 ABOUT THE CONTROLS ON THE AIR CONDITIONER Models: CW-XC184HU, CW-XC244HU OPERATION TEMP TIMER SWING MODE FAN SPEED ECONOMY Precaution: The Remote Controller 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.
ADDITIONAL CONTROLS AND IMPORTANT INFORMATION. • VENTILATION The ventilation lever must be in the CLOSE position in order to maintain the best cooling conditions. When fresh air is necessary in the room, set the ventilation lever to the CLOSE VENT OPEN OPEN position.
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.
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.
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 1.
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.
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.
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...
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 —12—...
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.
3.3 INSTALLATION KITS CONTENTS Foam strip Foam-PE (Plain-Back) (Adhesive-Backed) Foam-PE (Adhesive-Backed) Left frame curtain Drain pipe Window locking bracket Right frame curtain Sill bracket (2) Support bracket(2) Type B (7) Type C (5) Type D (2) Type A (14) Carriage Bolt (2) Lock Nut (4) Top retainer bar is in product package.
3.4 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.
3.5 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.
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. 27) Figure 27 7.
4. TROUBLESHOOTING GUIDE 4.1 OUTSIDE DIMENSIONS 26(660) (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. 33 to follow the refrigeration cycle and the flow of the refrigerant in the cooling cycle. ROOM AIR CONDITIONER CYCLE OF REFRIGERATION EVAPORATOR COILS...
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...
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.
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.
Possible Trouble 2 • The compressor does not operate. Is Temp. setting lower than Room • Set the Temp. setting to lower Temp. Temp. 0.5 C(1 F)? Is the voltage No.11 Is the voltage N0.7 of Is the Unit for 3 minutes of IC01M 0V? IC01M DC 5V? delay?
• Romote controller does not operate. Possible Trouble 5 Is the voltage of Battery • Replace the battery. about over 2.3V? Is the voltage No.17 • Check the P.C.B pattern. of CN-DISP on Main P.C.B Ass'y DC 5V? • Connect connector to Is the connection of CN-DISP1 exactly.
Possible Trouble 6 • It displays abnormally on Display P.C.B Ass'y. • Replace IC01G. Is the IC01G all right? • Connect connector Is the connection of to CN-DISP1 exactly. CN-DISP all right? Does the Q01G, Q02G, Q03G, Q04G operate normally •...
ROOM AIR CONDITIONER VOLTAGE LIMITS NAME PLATE RATING MINIMUM MAXIMUM AC 208~230 ± 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 control box. If none, check power supply cord.
COMPLAINT CAUSE REMEDY Fan motor noise. If cracked, out of balance, or partially missing, replace it. Turbo 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.
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.
5.2. ELECTOINC CONTROL DEVICE MODEL : CW-XC184HU, CW-XC244HU LED out2 Option2 LED out1 Option1 LED out0 Pipe TH KEY1 Room TH KEY0 VAref SLIDE SW Osc out SEG-g Osc in /Reset SEG-f SEG-e TEST SEG-d —29—...