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Room Air Conditioner
Service and Parts
Manual
CP05N10A
115 Volts
CP05 Svc Parts 2010 (05/10)
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CONTENTS 1. PREFACE ...................................................................................................................................................2 1.1 FEATURES.....................................................................................................................................................2 1.2 SPECIFICATIONS .........................................................................................................................................3 1.3 LOCATI
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1. PREFACE This service manual 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. 1.1 FEATURES DESIGNED FOR COOLING ONLY BUILT-IN ADJUSTABLE THERMOSTAT WASHABLE ONE-TOUCH FILTER COMPACT SIZE 1.2 SPECIFICATIONS 1.2-2 SPECIFICATIONS MODELS CP05N10A
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1.3 LOCATIONS OF CONTROLS 1 TEMPERATURE SETTING • These buttons control the temperature of the room. The temperature can be set within a range of 60°F to 86°F, in increments of 1°F. 2 MONEY SAVER The fan stops when the compressor stops cooling. • Approximately every 3 minutes the fan will turn on and sample the room air to determine if more cooling is needed. 3 OPERATION MODE SELECTOR • Everytime you push this button, it will rotate between the COOL, FAN and DRY modes. 4 ON/OFF TIMER ON–When
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2. DISASSEMBLY INSTRUCTIONS 2.1 MECHANICAL PARTS 2.1.1 FRONT GRILLE Figure 1 1. Pull the inlet grille forward. 2. Remove the screw securing the Front Grille. (Fig. 3) 3. Push the grille up from the bottom and pull the top of the grille away from the case to lift the top tabs out of their slots. (Fig. 4) 4. Carefully position the grille, bottom first, and snap back into place. 5. Reposition the screw that secures the front grille Figure 2 2.1.2 CABINET 1. Disconnect the unit from the power source
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Figure 6 2.2 AIR HANDLING PARTS 2.2.1 AIR GUIDE UPPER 1. Disconnect the unit from the power source. 2. Remove the front grille. (Refer to Section 2.1.1) 3. Remove the cabinet. (Refer to Section 2.1.2) 4. Remove the control panel. (Refer to Section 2.1.3) 5. Remove 2 screws that secure the upper air guide to air guide lower. (See Figure 6) 6. Lift upper air guide upward. 7. Re-install by referring to the procedures above. Figure 7 2.2.2 ORIFICE, TURBO FAN AND FAN 1. Disconnect the unit fr
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2.2.3 MOTOR Figure 10 1. Disconnect the unit from the power source. 2. Remove the front grille. (Refer to Section 2.1.1) 3. Remove the cabinet. (Refer to Section 2.1.2) 4. Remove the control panel. (Refer to Section 2.1.3) 5. Remove the upper air guide. (Refer to Section 2.2.1) 6. Remove the compressor, turbo fan, fan and shroud. (Refer to Section 2.2.2) 7. Remove 2 screws that secure the motor to the motor mount . (See Figure 10) 8. Remove the motor. 9. Re-install by referring to the proced
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2.3.2 COMPRESSOR Figure 14 1. Remove the front grille and cabinet. (Refer to Section 2.1) 2. Discharge the refrigerant by using a refrigerant recovery system. 3. Remove the overload protector. (Refer to Section 2.3.1) 4. After discharging the unit completely, unbrace the suction and discharge pipes at the compressor connections. 5. Remove 3 nuts which fasten the compressor. 6. Remove the compressor. 7. Re-install by referring to the removal procedure above. (See Figure 14) 2.3.3 CAPACITOR 1.
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Figure 18 2.3.6 POWER CORD 1. Disconnect the unit from source of power. 2. Remove the front grille. (Refer to Section 2.1.1) 3. Remove the cabinet. (Refer to Section 2.1.2) 4. Remove a screw that secures control panel to base pan. (Refer to Section 2.1.3) 5. Pulls the control board toward you. 6. Disconnect the 2 receptacles and remove the grounding screw. 7. Remove a screw securing the clip with cord to the control panel. 8. Pull the power cord. 9. Re-install by referring to procedures above.
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wise. This will keep oil from foaming and being 2.4.2 EVAPORATOR drawn into the vacuum pump. 1. Remove the cabinet. 2. Discharge the refrigerant by using a refrigerant 6-3. Operate the vacuum pump for 20 to 30 min- recovery system. utes, until 600 micron vacuum is obtained. 3. Remove the upper air guide . (Refer to Section Close valves A and B and observe vacuum 2.2.1) gauge for a few minutes. 4. After discharging the refrigerant completely, A rise in pressure would indicate a possible unbra
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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 and service valve. COMPOUND GAUGE MANIFOLD GAUGE B A CONDENSER SEE INSETS (HIGH PRESSURE SIDE) BELOW COMPRESSOR EVAPORATOR (LOW PRESSURE SIDE) CAPILLARY TUBE LO HI CHARGING CYLINDER A A B B EXTERNAL VACUUM PUMP C Figure 20A-Pulling Vacuum Figure 20B-Charging —10—
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2.4.4 ELECTRICAL DATA Line Cord Plug Use Wall Receptacle Power Supply Do not under any circumstances cut Use 15 AMP, time or remove the delay fuse, or circuit grounding prong from the plug. breaker. Power supply cord with Standard 125V, 3-wire grounding 3-prong grounding plug receptacle rated 15A, 125V AC USE OF EXTENSION CORDS Because of potential safety hazards, we strongly discourage the use of an extension cord. However, if you wish to use an extension cord, use a CSA certified/UL-liste
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3.2 PIPING SYSTEM CONDENSER COILS FAN MOTOR CAPILLARY TUBE TURBO FAN EVAPORATOR COILS Following is a brief description of the important components and their function in what is called the refrigeration system. Reference should be made to Figure 21 to follow the refrigerating cycle and the flow of the refrigerant in the cooling cycle. ROOM AIR CONDITIONER CYCLE OF REFRIGERATION EVAPORATOR COILS CONDENSER COILS VAPOR INLET SUCTION LINE HOT COMPLETE LIQUID COOL LOW PRESSURE VAPOR DISCHARGED BOIL O
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3.3 TROUBLESHOOTING GUIDE In general, possible trouble is classified in two kinds. The one is called Starting Failure which is caused by an electrical defect. The other is Ineffective Air Con- ditioning caused by a defect in the refrigeration circuit and improper application. Unit is running but cooling is ineffective. Ineffective Cooling Check cold air Check outdoor coil Check heat load circulation for smooth (heat exchanger) and increase. flow. fan operation. Clean condenser. Dirty i
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Fails to Start Check of circuit breaker Check voltage power source. and fuse. Check control switch Gas leakage of feeler setting. bulb of thermostat. Check control switch. Compressor fails to Fan fails to start. start. Improper wiring. Improper thermostat Drop of power voltage. setting Defect of fan motor or capacitor. Defect of compressor or Loose terminal capacitor. connection Irregular motor resistance (Ω) Capacitor check. Improper wiring Irregular motor insulation (Ω) Rep
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ROOM AIR CONDITIONER VOLTAGE LIMITS NAME PLATE RATING MINIMUM MAXIMUM 115V ± 10% 103.5V 126.5V COMPLAINT CAUSE REMEDY Fan motor will not run. No power Check voltage at outlet. Correct if none. Power supply cord Check voltage to electronic control board. If none, check power supply cord. Replace cord if circuit is open. Wire disconnected or Connect wire. Refer to wiring diagram for connection loose terminal identification. Repair or replace loose terminal. Capacitor (Discharge Test capaci
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wheel . control board —16—
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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. Clean the interior base before re-assembling. Condenser fins If the condenser fins are closed over a large (damaged) area on the coil surface, head pressures will increase, causing the co
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4. CIRCUIT DIAGRAM WH (BL) (SMPS) 250V/T2A (250V/T3.15A) MEZ62420702 LOCATION PART NO Q'TY DESCRIPTION NO. CP05N10A PER SET 1 POWER CORD ASSY 67300020 1 2FAN MOTOR 67400116 1 3 COMPRESSOR -1 4CAPACITOR -1 5 OVERLOAD PROTECTOR 67301425 1 —18—
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