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WARNING

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Before servicing, make sure to unplug the appliance.

After servicing replace all parts before operating the appliance.

Failure to do so could result in death, electrical shock or personal injury.

All servicing must be carried out by qualified technicians. Repairs done incorrectly
may cause considerable risk to the user.

For units with R600a refrigerant make sure to release all the refrigerant

before servicing

otherwise fires or explosion can result.

Personal Injury Hazard - To prevent unnecessary risk of fire, electrical shock or
personal injury, all wiring and grounding must be done in accordance with National
Electrical Code and local codes and ordinances.

1. Safety Warnings

1.1 Warnings and Safety Instructions

Содержание CWB1760FD

Страница 1: ...formed by an authorized service representative only SERVICE MANUAL CWB1760FD CWB8420DZ EdgeStar 24 Inch Built In Wine and Beverage Cooler with French Doors EdgeStar 24 Inch Built In Wine and Beverage...

Страница 2: ...Part Lists 17 3 1 CWB1760FD Exploded Diagram 17 3 2 CWB1760FD Parts List 18 3 3 CWB8420DZ Exploded Diagram 19 3 4 CWB8420DZ Parts List 20 4 Electronic Controls 21 4 1 Modes 21 4 2 Alarms 21 4 3 Other...

Страница 3: ...8 8 8 Replacing the Evaporator Assembly 39 8 9 Replacing the Compressor Compressor PTC Starter and Overload Protector 40 8 10 Replacing the Filter Dryer 40 8 11 Replacing the Condenser 41 8 12 Levelin...

Страница 4: ...9 5 1 E1 53 9 5 2 E2 53 9 5 3 E3 53 9 5 4 E4 54 9 5 5 E5 54 9 5 6 E6 54 9 5 7 E7 54 10 FAQs 55...

Страница 5: ...Repairs done incorrectly may cause considerable risk to the user For units with R600a refrigerant make sure to release all the refrigerant before servicing otherwise fires or explosion can result Pers...

Страница 6: ......

Страница 7: ......

Страница 8: ...1 2 Safety Instructions for R600a Refrigerant...

Страница 9: ...rant Cycle Diagrams CWB1760FD 1 Compressor 2 Spiral Tube 3 Condenser Fan 4 Condenser 5 Hot Pipe 6 Process Tube 7 Filter Dryer 8 Solenoid Valve 9 Capillary 10 Evaporator Fan 11 Accumulator 12 Evaporato...

Страница 10: ...CWB8420DZ 1 Compressor 2 Spiral Tube 3 Condenser Fan 4 Condenser 5 Hot Pipe 6 Process Tube 7 Filter Dryer 8 Capillary Tube 9 Evaporator Fan 10 Accumulator 11 Evaporator 12 Suction Tube 13 Process Tube...

Страница 11: ...a liquid The hot pipe is the first part of the condenser routed around the cabinet to help prevent moisture formation The filter dryer is installed at the end of the condenser to capture moisture whi...

Страница 12: ...he condenser can be replaceable But for free standing models the inlet side will connect to the discharge pipe of compressor and the outlet to filter dryer it is non replaceable Evaporator The evapora...

Страница 13: ...he EVAPORATOR or any other cycle part that has welding joint is hidden in the foam If not hidden inside the whole electric parts must be tested with the LEAKAGE TEST according to the IEC Standard The...

Страница 14: ...tm or 760mmHg Recommended vacuum time is 30 min Charge the N2 gas in order to check for leakage from welding points If leakages are found repair the defects and repeat the vacuum process After the sys...

Страница 15: ...ing the capillary tube The slightest kink can cause a complete tube restriction Restrictions of the capillary tube may be caused by 1 moisture freeze up 2 foreign particles lodged in the tube or 3 a b...

Страница 16: ...frost melts and drips on the floor A heat exchanger separation will also cause this symptom An undercharged system depending on the degree of undercharge will operate with temperatures above normal a...

Страница 17: ...3 Exploded Diagrams and Part Lists 3 1 CWB1760FD Exploded Diagram...

Страница 18: ...2 34 Left Bracket 1 10 Fan Guard 2 35 Bottom Bracket 1 11 Thermistor 2 36 Condenser 1 12 Thermistor Supporter 2 37 Power Cord 1 13 PCB Box 1 38 Compressor Base 1 14 Control PCB 1 39 Compressor 1 15 P...

Страница 19: ...3 3 CWB8420DZ Exploded Diagram...

Страница 20: ...Hinge Plate 1 14 Fan Motor 2 46 Extended Ventilation Grille 1 15 Upper Air Channel Cover 1 47 Ventilation Grille 1 16 Fan Guard 2 48 Lock Assembly 1 17 Air Door Assembly 1 49 Left Bracket 1 18 Top Pl...

Страница 21: ...m the Sabbath mode is ON Sabbath mode can be exited by repeating the above process The Sabbath Mode will automatically exit after 96 hours 4 2 Alarms Temperature Display During normal operation the te...

Страница 22: ...sting 1 The defrosting is performed each time when the total running time of the compressor reaches 10 hours 2 During the defrosting cycle the compressor is OFF and the fans will operate continuously...

Страница 23: ...mpressor and heater will be ON After the self check program has finished the unit will automatically go back to normal operation 4 6 Test Mode Press and hold the LIGHT and UP keys at the same time for...

Страница 24: ...5 2 CWB8420DZ Wiring Diagram 5 3 Power PCB...

Страница 25: ...5 4 Control PCB...

Страница 26: ...elay and OLP inside 3 Process Pipe 4 Electrical Box Power PCB inside 5 Compressor 6 Suction Pipe 7 Discharge Pipe 8 Condenser Fan Motor 9 Drainage Hose 10 Outlet Tube of Hot Pipe 11 Process Pipe 12 Fi...

Страница 27: ...2 Unscrew and transfer hinge pin 7 and door stopper 8 to opposite sides of bottom hinge Fig 2 3 Remove the top right hinge 9 by removing the three screws 10 Pop out the three caps covering the screw h...

Страница 28: ...all shelves and lay the unit on its back 2 Remove the four screws that secure the PCB box to the top of cabinet 3 Carefully pull down the PCB box and disconnect the wires from the control PCB 4 Caref...

Страница 29: ...by pulling it from the rubber plugs holding it to the panel Replace fan by following these steps in reverse order 4 Remove the sensor housing from side of cabinet by removing the two screws Remove te...

Страница 30: ...2 18 4 23 24 19 6 21 35 20 8 19 63 21 10 18 07 22 12 16 65 23 14 15 35 24 16 14 17 25 18 13 10 26 20 12 11 27 22 11 21 28 24 10 39 29 25 10 00 30 26 9 63 31 28 8 94 32 30 8 30 33 32 7 72 34 34 7 18 35...

Страница 31: ...rew 2 Flat head screw 3 Top plate of middle divider 4 Air duct assembly 5 Foam support of middle divider 6 Fan motor 8 Control PCB wiring connector 10 Fan cover 11 Rubber plug 12 Control PCB 13 Displa...

Страница 32: ...ws holding the bottom plate to the middle divider 3 Remove the four screws holding the top plate to the middle divider 4 Remove the top plate from the cabinet and slide the middle divider forward to a...

Страница 33: ...n in reverse order 6 To replace the control PCB carefully remove any bonding glue in yellow disconnect the wire connectors in red and slide the PCB to the left or right to remove it from the display h...

Страница 34: ...o the upper air channel cover and then you can replace the evaporator fan motor 8 3 3 Replacing the PTC Heater Fan and Temperature Sensor in the Lower Zone CWB8420DZ 1 Remove all shelves 2 Remove the...

Страница 35: ...CB 5 4 Disconnect the cables from the Power PCB and replace it 8 5 Replacing the Condenser Fan CWB1760FD and CWB8420DZ 1 Disconnect the condenser fan motor lead connector from the cable or power PCB i...

Страница 36: ...on the front of the kick plate and the two screws on the bottom 2 Remove the four hidden screws holding the top of the kick plate to the bottom of the cabinet by inserting a Phillips screwdriver into...

Страница 37: ...nt of the kick plate and the two screws on the bottom 2 Remove the four hidden screws holding the top of the kick plate to the bottom of the cabinet by inserting a Phillips screwdriver into the holes...

Страница 38: ...cing LED Lights CWB1760FD CWB8420DZ 1 Remove all shelves 2 Carefully remove the LED light cover with a small blade or your fingernail 3 Carefully pull down to remove the LED light and replace it with...

Страница 39: ...Remove the two brackets that fix the evaporator assembly to the cabinet 7 Remove the evaporator assembly from the cabinet and install the new one 8 After replacing the evaporator assembly make sure to...

Страница 40: ...he process tube approximately 150mm 6 inches long 9 Reconnect the refrigerant tubing to the compressor stubs after removing the rubber plugs 10 Recharge and leak test the system 11 Replace the PTC Sta...

Страница 41: ...he condenser to the cabinet 4 Loosen remove the base plates 1 and 3 to gain better access to the condenser if needed 5 Clean and then desolder the inlet and the outlet tube from the old condenser 4 6...

Страница 42: ...more than 1 16 on the hinge side causing a poor seal elsewhere around the top The distance between the door and cabinet is greater at the top than at the bottom or vice versa 4 If one or more of thes...

Страница 43: ...cooler place Let the appliance work for a while until the set temperature has been reached Do not open the door more than necessary Close door properly Check the door seal and clean or replace The li...

Страница 44: ...open for longer than 60 seconds If not then the temperature has risen higher or fallen lower than the temperature that has been set This could be due to The appliance door being opened too often The...

Страница 45: ...ventilation blocked 3 Is the evaporate fan motor in the upper zone defective 4 Is the condenser fan motor defective 5 Is the temperature sensor defective 6 Is the cooling system defective The displaye...

Страница 46: ...oors CWB1760FD The displayed temperature is higher than the set temperature 1 Is the ambient temperature too high more than 35 C 2 Is he ventilation blocked 3 Are the fan motors defective 4 Are the te...

Страница 47: ...troubled section and make repairs 3 No difference in temperature between suction pipe and discharge pipe of compressor The temperature of compressor is kept at room temperature The evaporator does no...

Страница 48: ...me LEDs do not light No response when touching the control buttons For this symptom check to see if there any response after disconnecting and reconnecting the power before replacing the Display Contr...

Страница 49: ...fails to operate it is defective and must be replaced 9 4 5 Testing the Heater Fan CWB8420DZ 1 The heater fan motor operates when the PTC heater operates and at the rest time it cycles ON and OFF to...

Страница 50: ...e the probe makes good contact with bare metal One at a time connect the other ohm meter probe to each of the three compressor terminals 3 If the meter shows no continuity to ground install PTC and ov...

Страница 51: ...er the compressor will trip on the overload 3 A Capacitor Low in Capacitance A capacitor may lose capacitance by a loss of its electrolytic properties The compressor would run under a light load but w...

Страница 52: ...ernal working components In spite of this technology your model may make sounds that are unfamiliar Normal operating sounds may be more noticeable because of the unit s environment Hard surfaces such...

Страница 53: ...sensor is an open circuit It may be caused by the following reasons The temperature sensor is defective Replace the thermistor The Power PCB is defective Replace the Power PCB The Control PCB is defe...

Страница 54: ...is defective Replace the Power PCB The Control PCB is defective Replace the Control PCB 9 5 6 E6 E6 indicates the solenoid valve is defective It may be caused by the following reasons The solenoid val...

Страница 55: ...ature drops Such changes happen over a short time and their influence is too minimal to affect wine preservation Liquid tends to keep an average temperature by physical law For example if a swimming p...

Страница 56: ...e for one zone if the above condition can t be met the temperature of the second zone will change automatically to meet the condition 10 11 The control panel doesn t seem to work This unit s control p...

Страница 57: ...ll 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 DATE REVISION NOTES 4 10 2018...

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