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Document Type: Service Manual
Version: V1.0 04112018
SERVICE MANUAL
Koldfront Cool Only Window Air Conditioner
MODELS COVERED:
WAC8002WCO
WAC10002WCO
WAC12002WCO
CAUTION: READ ALL SAFETY PRECAUTIONS IN THIS
MANUAL BEFORE SERVICING THE UNIT
EdgeStar, 8606 Wall St, Suite 1800, Austin, TX 78754
support.edgestar.com • service@edgestar.com • edgestar.com
*Warranty service should be performed by an authorized service representative only.
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Summary of Contents for Koldfront WAC8002WCO
- Page 1 Document Type: Service Manual Version: V1.0 04112018 SERVICE MANUAL Koldfront Cool Only Window Air Conditioner MODELS COVERED: WAC8002WCO WAC10002WCO WAC12002WCO CAUTION: READ ALL SAFETY PRECAUTIONS IN THIS MANUAL BEFORE SERVICING THE UNIT EdgeStar, 8606 Wall St, Suite 1800, Austin, TX 78754 support.edgestar.com •...
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Page 2: Table Of Contents
SAFETY PRECAUTIONS ........................... 2 ELECTRICAL SAFETY ..........................3 GENERAL SAFETY ............................4 1 EXPLODED DIAGRAMS AND PART LISTS ..................... 5 1.1 WAC8002WCO ............................ 5 1.2 WAC10002WCO ..........................7 1.3 WAC12002WCO ..........................9 1.4 DIMENSIONS ............................. 11 2 WIRING DIAGRAM (ALL MODELS) ......................12 3 MAIN COMPONENTS .......................... -
Page 3: Safety Precautions
SAFETY PRECAUTIONS WARNING: This manual and the information contained herein is intended for use by certified technicians. The manufacturer or seller is not responsible for the interpretation or misuse of the information provided, nor does it assume any liability in connection with its use. The safeguards and warnings indicated in this manual do not cover all possible conditions which may occur. -
Page 4: Electrical Safety
Electrical Safety Do not exceed the power outlet ratings. It is recommended that the unit be connected to its own circuit. A standard electrical supply that is properly grounded in accordance with the National Electrical Code and all state and local codes and ordinances is required. ... -
Page 5: General Safety
General Safety Always unplug an appliance from the power supply before attempting any service. Disconnect the power cord by grasping the plug, not the cord. Do not allow children or pets to play on or in the appliance. ... -
Page 6: Exploded Diagrams And Part Lists
1 Exploded Diagrams and Part Lists 1.1 WAC8002WCO... - Page 7 Part Name Part Name Front panel assembly Fan motor Front panel Fan housing Air outlet frame Left pulling rod of fan motor Panel frame Right puling rod of fan motor Vertical vane I Centrifugal fan Louver holder Volute shell assembly Vertical vane II 20.1 Mid volute shell...
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Page 8: Wac10002Wco
1.2 WAC10002WCO... - Page 9 Part Name Part Name Panel assembly Fan housing Front panel Axial fan Panel frame Fan motor 1.2.1 Horizontal louver Parts of compressor return pipe 1.2.2 Panel frame Compressor 1.2.3 Connecting rod of louver Parts of compressor exhaust pipe 1.2.4 Horizontal louver Evaporator assembly 1.2.5 Horizontal louver...
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Page 10: Wac12002Wco
1.3 WAC12002WCO... - Page 11 Part Name Part Name Panel assembly Fan motor Front panel Suction pipe Panel frame Compressor 1.2.1 Horizontal louver Parts of compressor exhaust pipe 1.2.2 Panel frame Evaporator assembly 1.2.3 Connecting rod of louver 24.1 Evaporator 1.2.4 Horizontal louver 24.2 Capillary tube assembly 1.2.5 Horizontal louver Condenser assembly...
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Page 12: Dimensions
1.4 Dimensions Width Height Depth 18-1/2” (471 mm) 13-3/8” (340 mm) 17-1/2” (444 mm) WAC8002WCO WAC10002WCO 19” (482 mm) 14-5/8” (372 mm) 21-1/2” (545 mm) WAC12002WCO... -
Page 13: Wiring Diagram (All Models)
2 Wiring Diagram (All Models) -
Page 14: Main Components
3 Main Components 3.1 Major Parts 3.2 Electronic Control Box and Main PCB 3.3 Sensor and Display Connections on Main PCB All sensor connections are clearly marked on the PCB (Room, Def) and are located near the display ribbon cable connection. Refer to this diagram when troubleshooting unit display issues or sensor error codes. -
Page 15: Operating Instructions
4 Operating Instructions 4.1 Display Panel Controls On-Off Button Press to turn on or off the unit. NOTE: The Energy Saver feature will automatically turn on in Cool, Dry, and Auto modes. Temp Button Press or hold either Up or Down button until desired temperature is seen on the digital display. - Page 16 Timer Button button and the “Timer On” indicator light When the unit is on or off, press the Timer illuminates. It indicates that the Auto Start/Stop program is initiated. button again and the “Timer Off” indicator light illuminates. It To switch to off press the Timer indicates that the Auto Stop program is initiated.
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Page 17: Remote Controls
4.2 Remote Controls The remote control has an operating range of 16 ft. from the appliance. The remote signal receiver/sensor is located on the control panel of the air conditioner. Reception of signal commands is confirmed by an audible beep. ... -
Page 18: Installation And Cleaning
5 Installation and Cleaning 5.1 Proper Installation and Drainage Older Koldfront window air conditioners included a drain plug that could be removed to assist with water drainage in excessively humid operating environments. Current models DO NOT use drain plugs. WAC series air conditioners were modified to increase unit operating efficiency and as a result the drain hole and plug have been removed. -
Page 19: Cleaning The Filter
5.2 Cleaning the Filter In order to maintain energy efficiency and prolong the life of the unit the air filter should be checked at least once a month to see if cleaning is necessary. In addition, trapped particles in the filter can quickly build up and cause frost on the evaporator. -
Page 20: Modes And Operating Conditions
6 Modes and Operating Conditions 6.1 Terms and Definitions TA: Temperature of indoor ambient. TE: Temperature of evaporator. TS: The set temperature. DAHT: Heater sensor. 6.2 Protection Functions The compressor restart protection has a delay of 3 minutes. ... -
Page 21: Fan-Only Mode
6.4 Fan-Only Mode If the temperature can’t be controlled by the selected mode and the room ambient temperature is shown on the display the unit will default to fan only mode. The readout can only display a temperature of 32 to 99 ℉ (0 to 37℃.) lf the temperature is out of that range the display will show LO or HI. -
Page 22: Auto-Defrost Function
6.7 Auto-Defrost Function The Auto-defrost function operates according to the chart below: TE ℉ compressor on compressor off when TE is lower than 30 ℉ lasting for 5 seconds When TE is below 30℉ the evaporator will frost. As the unit defrosts the indoor fan will continue to operate. -
Page 23: Troubleshooting
7 Troubleshooting Generally, problems are classified in three ways. The first is Starting Failure which is caused by an electrical defect. The second is an Air Conditioning failure caused by a defect in the refrigeration system or improper air circulation. The last is Structural Damage. 7.1 Troubleshooting Guide Problem Possible Cause... -
Page 24: Error Codes And Sensor Malfunctions
forming on cooling The directional louvers on the Position louvers for better air distribution. coil behind front grill. front are positioned improperly. Front of unit is blocked by drapes, blinds, furniture, etc. Clear blockage in front of unit. and is restricting air distribution. Doors, windows, registers, etc. -
Page 25: Temperature Sensor Resistance Test Table
7.3 Temperature Sensor Resistance Test Table Temp.℃ Temp. Resistance Temp. Temp.℉ Resistance Temp. Temp. Resistance KΩ KΩ KΩ ℉ ℃ ℃ ℉ 62.2756 62.6 14.6181 111.2 4.3874 15.8 58.7079 64.4 13.918 4.2126 17.6 56.3694 66.2 13.2631 114.8 4.0459 19.4 52.2438 12.6431 116.6 3.8867... - Page 26 DATE REVISION NOTES 04/11/2018 INITIAL DOCUMENT EdgeStar, 8606 Wall St, Suite 1800, Austin, TX 78754 support.edgestar.com • service@edgestar.com • edgestar.com *Warranty service should be performed by an authorized service representative only.