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Order No. MAC0007027C3
Room Air Conditioner
CW-SC120AA
SPECIFICATIONS
Specification
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Model Phase Voltage Frequency Cooling Capacity Running Current Input Power EER Starting Current Compressor Output Fan Motor Output Noise Level
CW-SC120AA Single 220 V 50 Hz 3.55 kW 12,100 Btu/h 5.6 A 1.21 kW 2.93 W/W 25 A 950 W 70 W Indoor (High / Low): 47 / 44 dB(A) Outdoor (High / Low): 56 / 53 dB(A) 2.1 Ltr/h 4.4 Pint/h 9.2 m3/min. 320 Ft3/min. Height: 14-25/32 inches (375 mm) Width: 22-1/16 inches (560 mm) Depth: 24-1/32 inches (610 mm) 49 kg 108 Ib 700 g 24.7 oz 1
Moisture Removal Air Circulation Dimensions
Net Weight Refrigerant (R-22)
1. Dimensions
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1.1. Top View, Front View & Side View
1.2. Unit
Item A - Width B - Height C - Depth D E F G H I J K L M N O P Q Unit: Inch (mm) 22-1/16" (560) 14-25/32" (375) 24-1/32" (610) 22-9/32" (566) 5-29/32" (150) 6-1/2" (165) 1-11/16" (43) 2-31/32" (75) 0-15/32" (12) 7-1/8" (181) 1-23/32" (44) 9-17/32" (242) 5-7/16" (138) 1-3/16" (30) 3-5/8" (92) 2-17/32" (64) 0-23/32" (18)
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Item R S T U V
Unit: Inch (mm) 11-13/16" (300) 3-5/32" (80) 2-3/4" (70) 1-5/16" (33) 5-1/2" (140)
2. Wiring Diagram
2.1.
2.2. Resistance of Fan Motor windings and the rated
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Capacitor.
Connection Blue - Yellow Yellow - Orange Red - Yellow Capacitor CWA921009 43.5 29.1 78.1 CWA31609 (3.5 F, 400VAC)
2.3. Resistance of Compressor windings and the rated Capacitor.
Connection C-R C-S Capacitor 2KS206D5AA04 2.234 2.630 CWA31504 (35 F, 370VAC)
Note: Resistance at 20°C of Ambient Temperature.
3. Refrigeration Cycle Diagram
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Item A B C D
Pressure (MPa) 1.93 ~ 2.05 1.91 ~ 2.01 0.52 ~ 0.56 0.50 ~ 0.54
Temperature (°C) 69 ~ 85 35 ~ 45 6 ~ 10 7 ~ 11
4. Air Conditioner Performance Evaluation
ntake & Discharge Air Temperature Difference
8°C and over (14.4°F) 8°C and over (14.4°F)
Current Drain -As specified. -Higher than specified. -Higher than specified. -Lower than specified. -Higher than specified by 50%.
Determination -Nothing wrong. -Nothing wrong, outdoor
Remedy -None. -Improve heat radiation. -Excessive amount of refrigerant. -Improve heat radiation. -Locate and repair leak. -Flush refrigeration cycle. -Replace the compressor.
temperature is too high, heat radiation is not efficient.
Under 8°C (14.4°F)
-Something is preventing heat
radiation.
Under 8°C (14.4°F)
-Leakage of refrigerant or -Compressor defect.
refrigerant system is blocked.
Under 8°C (14.4°F)
Note: Room air humidity is relatively higher, the temperature difference will be smaller.
5. Troubleshooting Guide
Warning: Disconnect unit from electrical power supply before making any electrical checks.
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Trouble Fan Motor and Compressor won't run.
Check -Supply Voltage -Fuse Box or Circuit
Breaker.
-Power cord or Wiring
Harness.
Result -Less than 10% by Rated. -Open Contacts. -Pulled loose or Shorted. -Higher than room temp. -Locked Fan. -Shorted / Open circuit. -OHM Meter doesn't
Deflect. Shown.
Cause -Temporary or Permanent? -Customer Restarted unit
Remedy -Consult ELECTRICIAN, If
permanent.
immediately without waiting 3 minutes.
-Thermostat Setting. Fan Motor won't run (Compressor run). -Objects around Fan. -RESISTANCE between
Wires.
-Capacitor Fan Motor. -Main Control Switch.
-No contacts at Position
-Fan Hitting Cowling or -Foreign Materials. -Frozen Bearings. -Shorted or Burned out. -Capacitor Defect. -Main Control Switch defect. -Winding Coil touched to the
compressor shell.
-Repair Open Circuit. -WAIT FOR 3 MINUTES. -Repair or Replace it. -Set it LOWER. -Adjust Fan position setting
screw.
Compressor won't run (Fan run).
-Thermostat setting. -RESISTANCE between
Terminal and the Compressor Body. Terminals.
-RESISTANCE between -Overload Protector. -Capacitor Compressor. -Thermostat. -Main Control Switch. -Main Control Switch. -Air Swing Switch. -Resistance between
wires.
-Higher than room temp. -Shorted. -Shorted. -Infinity between
Terminals. deflect.
-OHM Meter doesn't -No click heard. -No contacts at Position
Shown.
-Rare Shorted or Burnt out. -Overload Protector defect. -Capacitor defect. -Thermostat defect. -Main Control Switch defect.
-Remove Foreign Materials. -Replace Fan Motor. -Replace Fan Motor. -Replace Capacitor Fan. -Replace Main Control Switch. -Set it lower. -Replace Compressor. -Replace Compressor. -Replace Overload Protector. -Replace Capacitor
Compressor.
-Replace Thermostat. -Replace Main Control Switch. -Set it High or Low Cool. -Set it ON. -Replace Air Swing Switch. -Replace Air Swing Motor. -Set it lower. -Close Vent. door. -Clean or replace Air Filter. -Consider building an AWNIN -Remove obstacles or reinsta
unit.
Air Swing won't run.
-High or Low Fan setting. -OFF position. -No contact at position. -OHM Meter doesn't
deflect.
-Open circuit. -Shorted or open circuit.
nsufficient cooling.
-Thermostat Setting. -Ventilation door open. -Air filter dirty. -Location of installation. -Evaporator /
Condenser Coil obstructed.
-Higher than room temp. -Open. -Clogged or dirty. -Sunlight hitting outdoor
side.
-Unit capacity for the
room too small.
-Temp difference and
running current.
-Obstacles. -Clogged or dirty. -Not satisfied. -REFER TO
PERFORMANCE EVALUATION.
-Reduces capacity. -Restricted air circulation. -Restricted Heat Exchanger. -Restricted Heat Exchanger. -Restricted air circulation. -Leakage of refrigerant or
refrigeration system is blocked.
-Clean the coils. -Replace the unit with bigger
one.
Noise.
-Source of Noise
-Vibration. -Intermittent Noise.
-Faulty installation. -Fan hitting objects. -Refrigerant tubing touching
each other.
-Locate repair leak. -Flush refrigeration cycle. -Reinstall unit or Reinforce th
installation.
-Adjust Fan position or remo
foreign materials.
-Fan splashing Drain Water. Water dripping nside room. -Unit installation. -Drain Tray-Styrofoam
pieces blocking drain channel.
-Tilted to inside room. -Clogged.
-Restricted run off. -Clogged or blocked.
-About 1/2" Clearance neede -Normal occurrence. -Tilt unit to outside slightly. -Remove the foreign materia
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Check -Thermostat setting. Frozen Evaporator -Air filter / Evaporator. -Temp. difference and
running current.
Trouble
Result -Set too low for ambient
conditions.
-Clogged or Dirty. -REFER TO
PERFORMANCE EVALUATION.
Cause -Outdoor temp. low (Night time). -Restricted air circulation. -Leakage of refrigerant or
refrigeration system is blocked.
Remedy -Set the Main Control Knob to
Fan to melt ice and set the Temp. Control to higher temperature.
-Clean Air filter / Evaporator. -Locate and repair leak. -Flush refrigeration cycle.
6. Operating Instructions
6.1. Parts Identification.
6.1.1. Vertical Airflow Direction Vane.
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Airflow direction adjustment Up -and-Down. -The vertical airflow direction vane may be
positioned to deflect the air upward, downward or straight on.
6.1.2. Ventilation Lever.
When the slide lever is in the: -"OPEN" position, the ventilation door opens to
allow air, smoke and odors to be expelled from the room.
-"CLOSE" position, the ventilation door is
closed and the air inside the room is circulated and conditioned.
6.1.3. Operating Conditions.
Use the air conditioner under the following conditions:
- Operating temperature range.
Maximum Temperature Minimum Temperature
Indoor side D.B.T. W.B.T. 32°C 23°C 21°C 15°C
Outdoor side D.B.T. W.B.T. 43°C 26°C 21°C 15°C
- Continuous operation at over 90% high humidity may create condensation and
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Note: Humidity may exceed 90%.
result in water drops on the intake and outlet vanes.
6.2. How to Operate.
1. Open the Control Panel Cover.
Fig. 1
2. Power Supply Switch off the breaker and set the Main Control Knob to the OFF position before plugging the power plug into an electrical outlet.
Fig. 2
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3. Main Control Knob Set the Main Control Knob to either LOW COOL or HIGH COOL as desired, FAN setting operates the fan only. Caution: If the Main Control Knob is turned off or changed to a fan setting from a cooling operation setting, WAIT at least 3 minutes before resetting it to a cooling operation.
Fig. 3
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4. Thermostat Control Knob Turn the Thermostat Control Knob as shown in Fig. 4. Usually "6" ~ "7" is the recommended setting position. Note: When the Thermostat Control Knob is set to "10", moisture may freeze onto the evaporator fins and prevent effective cooling. If this happens, turn the Main Control Knob to HIGH FAN, and the Thermostat Control Knob counterclockwise. This will quickly defrost the evaporator fins so that normal cooling can be resumed.
Fig.4
5. Air Swing Switch (Airflow direction adjustment side-to-side) To obtain a fixed airflow direction, set the Air Swing Switch to "ON" for the vanes to swing from side to side until the desired flow direction is reached, then switch it to "OFF". For continuous side-to-side air circulation, set the Air Swing Switch to "ON".
Fig. 5
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7. How to Install
7.1. Before installing the air conditioner, please read the following:
7.1.1. Electrical Work.
- Always use at the rated voltage and with a specific air conditioning circuit. - Power supply point shall be the place where there is ease for the power - Some installation locations may require installation of a short-circuit breaker. - A 16 Ampere time delay fuse or circuit breaker is required. - Nominal cross sectional area of power supply wire must be 3 core x 1.0 mm2 - The power supply must be from an independent circuit. - All electrical installation must be made in accordance with local wiring and - There must be a double pole switch with minimum of 3 mm contact gap in the
fixed installation circuit (Applicable for models without power supply plug only). safety regulations wherever applicable. or above. disconnection in case of emergency.
7.1.2. Select the Best Location.
- Install the unit at the nearest power outlet. - The air conditioner should be installed in a dry place where there are no
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- Condensation from the air conditioner must be drained into an appropriate - Do not install in a location where flammable gas leaks is a possibility. - Usage in locations where the air is salty such as coastal areas or near hot - Do not install this appliance in a laundry room or other locations where water - Select an installation location which is rigid and strong enough to support or
hold the unit and select a location for easy maintenance. may drip from the ceiling, etc. spas, or where sulphurous gas is generated, may lead to a malfunction. location.
draughts.
7.2. Preparation for Installation.
- There should not be any obstacles surrounding the unit. - Prepare an installation hole that is only slightly bigger than the cabinet size.
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7.3. Installation Procedure.
7.3.1. Remove the Front Intake Grille.
- Pull up the Front Intake Grille about 90° and slide it slightly to the left to
unhook the tabs.
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7.3.2. Remove the Air Filter.
- Tilt up and pull out the air filter by the holder.
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7.3.3. Remove the Front Grille.
1. Remove the adhesive tapes from all sides of the Front Grille. 2. Open the Control Panel cover. 3. At the bottom right side of the Front Grille, press inward on the Cabinet near the Power Cord and pull the grille outward to the right until the right tab releases. 4. At the bottom left side, push inward on the Cabinet and pull the grille outward to the left to release the left tab. Do not pull the bottom edge toward you more than 3 inches as to prevent top two tabs from damage. 5. Slide the Front Grille upward to free the two top tabs from slots at the top of the Cabinet.
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7.3.4. Remove the Chassis Locking Bracket from the Cabinet.
1. Unscrew and remove the Chassis Locking Bracket. 2. Unscrew and remove from rear Cabinet.
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7.3.5. Slide the Chassis out from the Cabinet.
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7.3.6. Place Cabinet into the installation hole, then secure it by wood screws or nails.
- Note: Tilt down for better drainage (max. 10mm).
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7.3.7. Slide the Chassis back into the Cabinet.
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7.3.8. Hook the Particular Piece to the Cabinet and secure it with 2 of the 3 screws removed earlier in Step 4 to lock the Chassis.
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7.3.9. Reattach the Front Grille to the Cabinet and secure it with screws.
- Note: Depending upon the location of the AC outlet, route the AC cord to either
the left or right side while installing the Front Grille.
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7.3.10. Insert the Air Filter.
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7.3.11. Reattach the Front Intake Grille.
- Slide the Front Intake Grille slightly to the right to reattach the tabs and then
push down to close tight. Note: A "Click" sound can be heard when the Front Intake Grille is pushed down.
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7.4. Condensed Water Drainage.
This air conditioner employs a "Slinger-Up System" which is designed to splash the condensed water on the condenser coil for maximum cooling efficiency, thus producing a splashing sound. If the splashing sound annoys you, you can provide an outside drainage by using the following procedure which may, however, cause a small loss of performance. 1. Slide out the Chassis from the Cabinet. 2. Remove the rubber plug from the Base Pan. 3. Install the Drain Pan at the right corner of the Cabinet with 2 screws. 4. Connect the drain hose to the outlet of Drain Pan bottom. 5. Slide the Chassis back into the Cabinet. Note: Drain hose or tubing can be purchased locally to satisfy your particular needs.
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8. Care and Maintenance
Caution: Always turn off the air conditioner and the main power supply before unplugging the power cord to clean the unit.
8.1. Cleaning the Unit.
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Clean the Cabinet, Front Grille with a mild soap or detergent and lukewarm water.
8.2. Cleaning the Front Intake Grille.
Gently wash with water and a sponge. (Do not use a scrubbing brush or other hard cleaning aids).
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8.3. Cleaning the Air Filter.
1. Pull up the Front Intake Grille. 2. Lift up the Front Intake Grille at 45° until it is supported by the stopper.
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3. Tilt up and pull out the Air Filter by the holder. 4. Vacuum the front of the filter and then wash the back of it with water. If it is badly soiled, wash with a mild household detergent.
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Note: Do not clean with benzene, thinner, scouring powder or corrosive chemicals. Do not dry the Front Intake Grille or the Air Filter in direct sunlight. Exposure to direct sunlight may discolor or deform the panel.
9. Service Information
9.1. Removal of the Control Board
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1. Remove the Front Intake Grille (refer to page 9). 2. Remove the Air Filter (refer to page 9). 3. Remove the Front Grille (refer to page 9). 4. Remove the 2 knobs.
5. Take off the Control Panel.
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6. Release the sensor thermostat from the holder sensor.
7. Loosen the 3 screws of the Control Board.
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8. Slide the Control Board out from the chassis.
- Control Board part location.
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10. Technical Data
10.1. Thermostat Characteristics.
- Mechanical Thermostat.
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10.2. Operation Characteristics.
- Cooling Characteristics Vs. Outdoor Temperature.
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11. Exploded View
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(Note)
- The above exploded view is for the purpose of parts disassembly and - The non-numbered parts are not kept as standard service parts.
12. Replacement Part List
Ref. No. 100 101 102 103 106 109 112 113 117 120 121 122 123 124 125 128 129 130 135 144 145 200 201 202 203 205 207 210 211 212 220 300 302 303 304 306 308 Part Name & Description Base Pan Complete Bulkhead Complete Air Guide - Propeller Fan Bracket - Fan Motor Top Plate Drain Tray - Evaporator Holder - Ventilation Lever Ventilation Lever Vane - Air Swing Blower Wheel Complete Propeller Fan Nut - Propeller Fan Holder - Air Swing Motor Holder - Capacitor (Compressor) Control Board (Main) Holder - Sensor Drain Plug - Base Pan Chassis Locking Bracket (Left) Air Guide - Blower Wheel Air Guide - Blower Wheel (Front) Supporter - Air Swing Compressor Bushing - Compressor Mount Nut - Compressor Mount Gasket - Terminal Cover Terminal Cover - Compressor Nut - Terminal Cover Condenser Strainer Capillary Tube Evaporator Fan Motor Capacitor - Fan Motor (3.5 Capacitor - Compressor (35 Main Control Switch Switch - Air Swing Thermostat F, 400VAC) F, 370VAC) Qty. 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 3 1 1 1 1 1 1 1 1 1 1 1 1 1 CW-SC120AA CWD52K1003A CWD53C1007 CWD311005 CWD541006 CWD64C1004 CWH401006 CWD911024 CWH221001 CWE241006 CWH01K1002 CWH001002 CWH56032 CWD911028 CWH30133 CWH102019 CWH32086 CWH4611062 CWD932055 CWD321007 CWD321008 CWD932038 2KS206D5AA04 CWH50055 XNG8B CWH7070603 CWH7070206 CWH7080300 CWB32C1036 CWB11025 CWB15K1006 CWB30C1019 CWA921009 CWA31609 CWA31504 CWA07095 CWA05024 CWA15158
replacement.
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