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CWB8420DZ
EdgeStar CWB8420DZ User Manual
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EdgeStar, 8606 Wall St, Suite 1800, Austin, TX 78754
support.edges
tar.com • service@edgestar.com • edgestar.com
*Warranty service should be performed 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 Cooler
Document Type: Service Manual
Version: V1.0 04102018
CAUTION: READ ALL SAFETY PRECAUTIONS IN THIS
MANUAL BEFORE SERVICING THE UNI
T
2
Table of Contents
Default Chapter
2
Table of Contents
2
1 Safety Warnings
5
Warnings and Safety Instructions
5
Safety Instructions for R600A Refrigerant
8
2 Refrigeration System
9
Refrigerant Cycle Diagrams
9
Refrigeration Process
11
Refrigeration System Components
12
Service Precautions for R600A Refrigerant
13
Performance Checks
15
Leak Testing
16
3 Exploded Diagrams and Part Lists
17
CWB1760FD Exploded Diagram
17
CWB1760FD Parts List
18
CWB8420DZ Exploded Diagram
19
CWB8420DZ Parts List
20
4 Electronic Controls
21
Modes
21
Alarms
21
Other Functions
22
Fan Operation
22
Control System Self-Check
23
Test Mode
23
5 Schematic Diagrams
23
CWB1760FD Wiring Diagram
23
CWB8420DZ Wiring Diagram
24
Power PCB
24
Control PCB
25
6 Compressor Compartment Components
26
7 Reversing the Door Swing (CWB8420DZ)
27
8 Replacing Main Components
28
Replacing the Control PCB (CWB1760FD)
28
Replacing the Evaporator Fan and Temperature Sensor (CWB1760FD)
29
Sensor Test Resistance Table
30
Replacing Components in and Around the Middle Divider (CWB8420DZ)
31
Replacing the Fan and Control PCB in the Middle Divider (CWB8420DZ)
32
Replacing the Evaporator Fan and Temperature Sensor in the Upper Zone (CWB8420DZ)
34
Replacing the PTC Heater, Fan and Temperature Sensor in the Lower Zone (CWB8420DZ)
34
Replacing the Power PCB (CWB1760FD and CWB8420DZ)
35
Replacing the Condenser Fan (CWB1760FD and CWB8420DZ)
35
Replacing Kick Plates
36
Kick Plate on CWB1760FD
36
Kick Plate on CWB8420DZ
37
Replacing LED Lights (CWB1760FD & CWB8420DZ)
38
Replacing the Evaporator Assembly
39
Replacing the Compressor, Compressor PTC Starter and Overload Protector
40
Replacing the Filter Dryer
40
Replacing the Condenser
41
Leveling the Door(S) and Hinge Adjustments
42
Replacing the Door Gasket
42
9 Troubleshooting
43
Troubleshooting Guide
43
Diagnostic Guide
45
Troubleshooting the Refrigerant System
47
Special Detailed Diagnosis
48
Testing the Power PCB & Display/Control PCB
48
Testing the Condenser Fan
48
Testing the Evaporator Fan
48
Testing the Fan in the Middle Divider (CWB8420DZ)
49
Testing the Heater Fan (CWB8420DZ)
49
Testing the PTC Heater (CWB8420DZ)
49
Overload Protector
50
PTC Starter
50
Run Capacitor
51
Abnormal Vs. Normal Noise
52
Evaporator Freezing
52
Solenoid Valve (CWB1760FD)
53
Display Error Codes
53
10 Faqs
55
4
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EdgeStar CWB8420DZ Specifications
General
Brand
EdgeStar
Model
CWB8420DZ
Category
Kitchen Appliances
Language
English
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