EdgeStar CWR461DZ, CWR262DZ, CWF340DZ, CWR1101DZ, CWR1551DZ Service Manual

Document Type: Service Manual

Version 1.1 10162017

SERVICE MANUAL

Multi Zone Cooler

MODEL:

CWR461DZ, CWR262DZ, CWF340DZ, CWR1101DZ,
CWR1551DZ, CWR1551DD, CWR1431TZ

CAUTION: READ ALL SAFETY PRECAUTIONS IN THIS
MANUAL BEFORE SERVICING THE UNIT

EdgeStar, 8606 Wall St, Suite 1800, Austin, TX 78754

support.edgestar.com • [e-mail] • edgestar.com

*Warranty service should be performed by an authorized service representative only.

CONT

ENTS

- 2 -

SAFETY PRECAUTIONS .............................................................................................................................................................2

PARTS IDENTIFICATION .........................................................................................................................................................3-7

DISASSEMBLY........................................................................................................................................................................8-22

DOOR .......................................................................................................................................................................................8

WOODEN SHELVES................................................................................................................................................................8

WIRES SHELVES.....................................................................................................................................................................8

LAMP………… ....................................................................................................................................................................9-12

DISPLAY BOARD BOARD & CONTROL BOARD............................................................................................................12-15

POWER BOARD & TRANSFORMER ...............................................................................................................................15-16

SENSOR & FAN................................................................................................................................................................16-19

COMPRESSOR PTC STARTER & OVERLOAD PROTECTOR......................................…………………………….…….19-22

TROUBLESHOOTING.........................................................................................................................................................23-26

COMPRESSOR COMPONENTS ..........................................................................................................................................23

ANOTHER ELECTRIC COMPONENT ..................................................................................................................................24

SERVICE DIAGNOSIS CHART.............................................................................................................................................25

REFRIGERATING CYCLE ....................................................................................................................................................26

DESCRIPTION OF PCB .....................................................................................................................................................27-28

SAFETY PRECAUTIONS

Please read the followings before servicing your appliance.

1. Check if an electric leakage occurs in the set.

2. To prevent electric shock, unplug prior to servicing.

3. In case of testing with power on, wear rubber gloves
to prevent electric shock.

4. If you use any appliances, check regular current,
voltage and capacity.

5. Don't touch metal products in cold freezer with wet
hand. It may cause frostbite.

6. Prevent water flowing to electric elements in
mechanical parts.

7. When sloping the set, remove any materials on the
set, especially thin plate type. (ex.: glass shelf or
books.)

8. When servicing evaporator part, wear cotton gloves
without fail. It is to prevent wound by sharp fin of
evaporator.

9. Leave a breakage of refrigerating cycle to a heavy
service center. The gas in cycle inside may soil
ambient air.

- 3 -

2. PARTS IDENTIFICATION

Model：CWR461DZ

Models：CWR262DZ

- 4 -

2. PARTS IDENTIFICATION

Models：CWF340DZ

Models：CWR1101DZ

- 5 -

2. PARTS IDENTIFICATION

Models：CWR1551DZ

- 6 -

2. PARTS IDENTIFICATION

Models：CWR1551DD

- 7 -

2. PARTS IDENTIFICATION

Models：CWR1431TZ

Seamless Stainless Door

Light

Carbon Filter

Internal Fan

Shelf

Door Lock

Lower control Panel

Upper Control Panel

Front Vent

Leveling foot

Door Handle

- 8 -

3. DISASS

EMB

LY

3-1 DOOR

(Models：CWR461DZ , CWR262DZ )

Loosen 2 bolts fixing the lower door axis to the lower

hinge to remove the door. (Figure 1)

Low

er Door Axis

Lower Hinge

BOLT

Figure 1

(Models：CWR1101DZ, CWR1551DZ, CWR1551DD,
CWR1431TZ)

Loosen 2 bolts fixing the lower door axis to the lower

hinge to remove the door. (Figure 2)

Figure2

(Models：CWF340DZ)

Loosen 3 bolts fixing the lower hinge to the cabinet to
remove the door. (Figure 3)

Low

er Hinge

BOLT

Figure3

3-2 WOODEN SHELVES

(Models：CWR461DZ , CWR262DZ
CWR1101DZ, CWR1551DZ, CWR1551DD, CWR1431TZ)

 Open the door completely.
 If necessary, make sure you remove all the contents sitting

on the shelf..

 Pull the shelf forward until the notch aligns with the plastic

post on each side of the shelf track.

 Lift the shelf until both notches pass through the posts.
 Continue to pull the shelf forward until it is completely

removed from the inner compartment. (Figure 4)

Figure 4

WIRES SHELVES

(Models：CWF340DZ)

 Open the door completely.
 If necessary, make sure you remove all the contents sitting

on the shelf..

 Pull the shelf forward until the notch aligns with the plastic

post on each side of the shelf track.

 Lift the shelf until both notches pass through the posts.
 Continue to pull the shelf forward until it is completely

removed from the inner compartment. (Figure 5)

Figure 5

- 9 -

3. DISASS

EMB

LY

3-3 LAMP

(Models：CWR461DZ , CWR262DZ , CWR1101DZ,
CWR1551DZ ,

LED light in upper zone

1.

Loosen four screws. (figure 6)

screws

Figure 6

2.

Open the electrical box and remove four fixer on the PCB
board. (figure 7)

Figure 7

3. Unplug the led light connector. (figure 8)

connector

Figure 8

4.

Pull out the LED light. The LED light is like below. (figure 9)

Figure 9

LED light in lower zone

1. Loosen one screws. (figure 10)

Figure 10

2. Unplug the led light connector. (figure 11)

Figure 11

5. Loosen two screws. (figure 12)

Screw

Figure 12

6.

Pull out the LED light. The LED light is like below.
(figure 13)

Figure 8

Figure 13

(Models：CWF340DZ)
LED Light in upper zone

1. Loosen four screws. (figure 14)

Figure 14

connector

- 10 -

3. DISASS

EMB

LY

2. Unplug the led light connector. (figure 15)

Figure 15

3. Loosen two screws. (figure 16)

Figure 16

4. The LED light is like below. (figure 17)

Figure 17

LED light in lower zone

3. Loosen one screws. (figure 18)

Figure 18

4. Unplug the led light connector. (figure 19

Figure 19

7. Loosen two screws. (figure 20)

Screw

Figure 20

(Models：CWR1551DD )

LED Light in upper zone

1. Loosen four screws. (figure 21)

Figure 21

Screw

2. Pull out the electrical box. (figure 22)

Figure 22

3. Unplug all cable connectors. (figure 23)

4. Press the plastic nail supporting the control board with
forefinger and thumb. (figure 24)

Figure 23

Figure 24

5. The LED light is like below. (figure 25)

Figure 25

co

nnector

- 11 -

3. DISASS

EMB

LY

LED light in lower zone

1. Remove four screws from the middle air duct board (figure

26)

Screw

Figure 26

2.

Remove the middle air duct board cover. Unscrew four

screws (figure 27)

Screw

Figure 27

3.

Ta

ke out the complete middle air duct board

(figure 28)

.

Figure 28

5.

Pul

l out the LED light connector

(figure 29)

Light connector

Figure 29

5.Loosen t

he LED light five fixer. Take out the LED light.

(figure 30)

Figure 30

6. The LED light is like below. (figure 31)

Figure 31

(Models： CWR1431TZ )

LED light in upper zone

1. Loosen one screws. (figure 32)

Figure 32

2. Unplug the led light connector. (figure 33)

Figure 33

3. Loosen two screws. (figure 34)

Screw

Figure 34

4. The LED light is like below. (figure 35)

Figure 35

LED

light in middle and lower zone

1. Remove five screws（figure 36)

Screw

Figure 36

co

nnector

- 12 -

3. DISASS

EMB

LY

2. Pull ou

t the cover board

（figure 37)

Figure 37

3. Tak

e out the LED light connector

（figure 38)

Figure 38

4. Lossen

the LED light five fixer.

（figure 39)

Figure 39

5.

The LED light is like below. (figure 40)

Figure 40

3-4 DISPLAY BOARD & CONTROL BOARD

(Models：CWR461DZ, CWR262DZ, CWR1101DZ,
CWR1551DZ)

1. Loosen four screws. (figure 41)

2. Pull out the electrical box.

Figure 41

Screw

3.

Unplug all cable connectors. (figure 42)

4. Press the plastic nail supporting the control board with
forefinger and thumb.

Figure 42

5. The control board is like below. (figure 43)

Figure 43

6. Disassemble the display board. (figure 44)

Figure 44

7. The display board is like below. (figure 45)

Figure 45

(Models：CWF340DZ)

1. Loosen free screws. (figure 46)

Figure 46

- 13 -

3. DISASS

EMB

LY

2. Push up the top insert Assembly. (figure 47)

Figure 47

3.

Unplug the cable connector. (figure 48)

Figure 48

4. Loosen six screws. (figure 49)

Figure 49

5. The display board is like below. (figure 50)

Figure 50

6. Loosen four screws.

7. Press the plastic nail supporting the control board with
forefinger and thumb. (figure 51)

Figure 51

8.

Unplug all cable connectors.

9. The control board is like below. (figure 52)

Figure 52

(Models：CWR1551DD )

1. Loosen four screws. (figure 53)

Figure 53

Screw

2. Pull out the electrical box. (figure 54)

Figure 54

3. Loosen the two fixer from PCB board. Take out the PCB
board.(figure 55)

Figure 55

3. The display board is like below. (figure 56)

Figure 56

- 14 -

3. DISASS

EMB

LY

(Models： CWR1431TZ )

PCB boar

d for lower zone

1. Remove five screws from the air duct board (figure 57)

Screw

Figure 57

2. Pull out the air duct board cover

(figure 58)

Figure 58

3. Unplug all cable connectors. (figure 59)

Figure 59

4. The control board is like below. (figure 60)

Figure 60

5.Remove the six screws from Air duct board C(figure 61)

Figure 61

6.Loosen the display PCB board connector. Pull out the air
duct board C.Take out the front display PCB board cover from
left side(figure 62)

Figure 62

7. Loosen the display PCB board fixer and take out the PCB
board.(figure 63)

Figure 63

8. The display board is like below. (figure 64)

Figure 64

Display PC

B board in upper zone

9. Remove the screws form air duct board (figure 65)

Figure 65

Screw

10. Pul

l out the air duct board cover

(figure 66)

Figure 66

Front cover

- 15 -

3. DISASS

EMB

LY

11.Remove the six screws from Air duct board C (figure 67)

Figure 67

12.Loosen the display PCB board connector. Pull out the air

duct board C.Take out the front display PCB board cover from
left side(figure 68)

Figure 68

13. Loosen the fixer from the display PCB board. Take out the

display PCB board(figure 69)

Figure 69

14. The display board is like below. (figure 70)

Figure 70

3-5 POWER BOARD & TRANSFORMER

(Models： CWR262DZ)

1. Remove the screws from the box near compressor. (figure

71)

Figure 71

2. The power board & transformer as below. (figure 72)

Figure 72

(Models：CWR461DZ, CWR1101DZ, CWR1551DZ)

1. Loosen three screws. (figure 73)

Figure 73

2. The power board & transformer are like below. (figure 74)

Figure 74

(Models： CWF340DZ)

1. Loosen three screws. (figure 75)

Figure 75

Front display PCB board cover

- 16 -

3. DISASS

EMB

LY

2. The power board & transformer are like below. (figure 76)

Figure 76

(Models：CWR1551DD)

3. Loosen three screws. (figure 77)

Figure 77

4. The power board & transformer are like below. (figure 78)

Figure 78

(Models：CWR1431TZ)

5. Loosen three screws. (figure 79)

Figure 79

6. The power board & transformer are like below. (figure 80)

Figure 80

3-6 SENSOR & FAN

(Models：CWR262DZ)

1. Loosen six screws. Pull out the rear air duct cover.
(figure 8 1 )

fan

Screw

Sensor

Figure 81

2.

Loosen screw. You can replace the sensor ,heater & fan.
(figure 82)

heater

wire housing

screw

evaporator

defrost
sensor

Figure 82

- 17 -

3. DISASS

EMB

LY

(Models：CWR461DZ)

1. Loosen six screws. Pull out the rear air duct cover.
(figure 8 4 )

Screw

fan

cold catalyst

Figure 84

2. Loosen 1 screw. You can replace the sensor ,heater &

fan. (figure 85)

evaporator

sensor

heater

wire housing

screw

Figure 85

Models：CWR1101DZ)

1. Loosen screws. Pull out the rear air duct cover. (figure 8 6 )

screw

sensor

fan

Carbon Filter

sensor

fan

Figure 86

2.

Loosen screw. You can replace the sensor ,heater &
fan.(figure 87)

defrost
sensor

evaporator

screw

wire housing

heater

Figure 87

(Models：CWR1551DZ)

1. Loosen screws. Pull out the rear air duct cover. (figure
8 8 )

screw

sensor

fan

Carbon Filter

sensor

fan

Figure 88

2.

Loosen screw. You can replace the sensor,heater & fan.
(figure 89)

defrost
sensor

evaporator

screw

wire housing

heater

Figure 89

- 18 -

3. DISASS

EMB

LY

(Models：CWF340DZ)

1. Loosen screws. Pull out the rear air duct cover.
(figure 9 0 )

Screw

sensor

fan

Figure 90

2.

Loosen 1 screw. You can replace the sensor,heater & fan.
(figure 91)

evaporator

sensor

heater

wire housing

screw

Figure 91

(Models：CWR1551DD)

1. Loosen screws. Pull out the rear air duct cover.
(figure 9 2 )

screw

fan

sensor

fan

sensor

Figure 92

2.

Loosen screw. You can replace the sensor ,heater &
fan.(figure 93)

screw

wire housing

heater

evaporator

screw

wire housing

heater

evaporator

Figure 93

(Models：CWR1431TZ)

1. Loosen screws. Pull out the rear air duct cover.
(figure 9 4 )

fan

screw

sensor

fan

sensor

sensor

fan

Figure 94

- 19 -

3. DISASS

EMB

LY

2.

Loosen screw. You can replace the sensor ,heater &
fan.(figure 95)

screw

wire housing

heater

evaporator

evaporator

Figure 95

heater

3-7 COMPRESSOR PTC STARTER & OVERLOAD

PROTECTOR

(Models：CWR262DZ)

1. Remove the clamp that is used to fix the compressor
junction box. (figure 96)

Figure 96

2. Remove the compressor junction box. (figure 97)

Figure 97

3. Dismantle the compressor PTC starter and overload
protector. (figure 98)

Figure 98

4. The compressor PTC starter and overload protector is like
below. (figure 99)

Figure 99

(Models：CWR461DZ)

1. Loosen one screw. (figure 100)

Figure 100

- 20 -

3. DISASS

EMB

LY

2. Remove the compressor junction box. (figure 101)

Figure 101

3. Dismantle the compressor PTC starter and overload
protector. (figure 102)

Figure 102

4. The compressor PTC starter and overload protector is
like below. (figure 103)

Figure 103

(Models：CWR1101DZ)

1. Loosen one screw. (figure 104)

Figure 104

2. Remove the compressor junction box. (figure 105)

Figure 105

3. Dismantle the compressor PTC starter and overload
protector. (figure 106)

Figure 106

- 21 -

3. DISASS

EMB

LY

4. The compressor PTC starter and overload protector is
like below. (figure 107)

Figure 107

(Models：CWR1551DZ， CWR1551DD)

)

1、Open the box near compressor, take out the box.(figure 108)

Figure 108

2、 Remove the compressor junction box. (figure 109)

Figure 109

3. Dismantle the compressor PTC starter and overload
protector. (figure 110)

Figure 110

4. The compressor PTC starter and overload protector
is like below. (figure 111)

Figure 111

(Models：CWF340DZ)

1 .

Opne the box newr compressor and take out the box.(figure

112)

Figure 112

- 22 -

3. DISASS

EMB

LY

2.

Dismantle the compressor PTC starter and overload

protector. (figure 113)

Figure 113

3、 The compressor PTC starter and overload protector is

like below. (figure 114)

Figure 114

Models：CWR1431TZ

1.

Open the box near compressor and take out the box（figure

115)

Figure 115

2.

Dismantle the compressor PTC starter and overload

protector. (figure 116)

Figure 116

3. The compressor PTC starter and overload protector is
like below. (figure 117)

Figure 117

- 23 -

4. TROUBL

ESHOOTING

1

4-1 COM

PRESSOR COMPONENTS

Check the
resistance of
Motor
Compressor.

2

Check the
resistance of
PTC-Starter.

Check the resistance
among M-C, S-C and
M-S in Motor
Compressor. If its

normal

Check the resistance
of two terminals in
PTC-Starter. If its

normal

YES

NO

Replace Compressor.

YES

NO

2

2 3

3

Replace

PTC-Starter.

3

Check OLP.

Check if applying
a regular OLP.

NO

Replace OLP.

- 24 -

4. TROUBLESHOOTING

Check if current flows to the

following components.

Cause.

a. Starting devices

Shorted or broken.

b. OLP

Poor contacting

or shorted.

c. Compressor coil Coil shorted.

d. Circuit Parts

Poor contacting

or shorted.

4-2 ANOTHE

R ELECTRIC COMPONENTS

▼ Cooling is impossible

Compressor
doesn't run.

Replace
each component.

Running state of
Compressor is poor.

Check a starting
voltage.

Low voltage. Raise the voltage.

Check if current flows
to starting devices.

Poor contacting
and broken.

Replace
each component.

Check current flowing
in coil of
Compressor.

Shorted.

Check capacity of OLP.

Lack of capacity.

The items described
above are normal.

Coil of motor
Compressor.

Replace
the compressor.

▼ Cooling ability is poor

Fan motor
doesn't run.

Check Control PCB

Check current flowing
in the Fan Motor.

Poor contacting.

Coil is shorted.

Replace
each component.

Much frost are sticked
to the EVAPORATOR.

Check current flowing
of the following
components.

• Def. Sensor

Shorted.

Replace
each component.

- 25 -

4. TROUBLESHOOTING

4-3 SERVICE DIA

GNOSIS CHART

Probl

em

Possible Cause

Appl

iance does not operate.

Not plugged in.
The appliance is turned off.
The circuit breaker tripped or a blown fuse.

Applia

nce is not cold enough.

Check

the temperature control setting. External
environment may require a higher
setting.
The door is opened too often.
The door is not closed completely.
The door gasket does not seal properly.

Turns on and off fr

equently.

The roo

m temperature is hotter than normal.

A large amount of contents has been added to the wine chiller.
The door is opened too often.
The door is not closed completely.
The temperature control is not set correctly. The door
gasket does not seal properly.

The light

does not work.

Not pl

ugged in.
The circuit breaker tripped or a blown fuse. The bulb has
burned out.
The light button is “OFF”.

Energy

conservation button is on.

Vibrations.

Check to assure that the Wine Chiller is level.

The Win

e Chiller seems to make too much noise.

The rattlin

g noise may come from the flow of the refrigerant,
which is normal.
As each cycle ends, you may hear gurgling
sounds caused by the flow of refrigerant in your
Wine Chiller.
Contraction and expansion of the inside walls may cause
popping and crackling noises.
The Wine Chiller is not level.

The door will

not close properly.

The Wine Chiller is not level.
The door was reversed and not properly installed. The gasket is
dirty.
The shelves are out of position.

Displ

ay error code “E1”

The air sensor is open circuit failed. Connection main control
PCB

is with yellow color wires. Check the circuit, if it is normal,

the sensor need to be replaced.

Displ

ay error code “E2”

The air sensor is short circuit failed. Connection main control
PCB i

s with yellow color wires. Check the circuit, if it is normal,

the sensor need to be replaced.

Displ

ay error code “E3”.

The defrost sensor is open circuit failed. Connection main
control P

CB is with red color wires. Check the circuit, if it is

normal, the sensor need to be replaced.

Displ

ay error code “E4”.

The defrost sensor is short circuit failed. Connection main
control P

CB is with red color wires. Check the circuit, if it is

normal, the sensor need to be replaced.

Display error code “E7”.

The air sensor is open circuit failed. Connection main
control P

CB is with white color wires. Check the circuit, if it

is normal, the sensor need to be replaced.

Displ

ay error code “E8”.

The air sensor is short circuit failed. Connection main
control P

CB is with white color wires. Check the circuit, if it

is normal, the sensor need to be replaced.

- 26 -

4. TROUBLESHOOTING

4-4 REFRI

GERATING CYCLE

▼ Troubleshooting Chart

LEAKAGE

PA R TIAL
LEAKAGE

Low owing sound of
Refrigerant is heard and
frost forms

A little high ­more than
ambient room
temperature.

WHOLE
LEAKAGE

Flowing sound of Refrigerant
is not heard and frost isn't
formed.

CLOG

IN CAPILLARY

Flowing sound of Refrigerant
is heard and frost forms

A little high ­more than
ambient room
temperature.

A little high ­more than
ambient room
temperature.

A little high ­more than
ambient room
temperature.

Flowing sound of Refrigerant
is not heard and frost isn't
formed.

YES

No frost or forms
in inlet only

Faulty

Normal amount

Inject Refrigerant to

Observe the discharging
amount of Refrigerant.

No or not much

NO

YES

Compressor.

Compressor and check
cooling operation.

Check Compressor

Clogged or restricted

Normal formed
frost in Evaporator

Find and Repair Leak

Appliance does
not get cold
enough

Appliance does
not get cold at all

Does compressor
turn on?

Is gas leak detected?

Observe refrigerant disharging point. Oil dishcharge/stain is often best indicator. indicator. Use bubbles to locate hole in line,
evaporator or condensor.

No cooling

Is oil leak detected?

• No discharging of refrigerant

• The capillary tube is faulty.

• The lter dryer is faulty.

• The condensor is faulty.

• The evaporator is faulty.

• No discharging of refrigerant

• A little refrigerant discharges

• Normal cooling is possible when

charging refrigerant of regular amount

stated on specication plate / rating

label.

• A little refrigerant discharges

• Normal cooling is possible when

charging refrigerant of regular amount

stated on specication plate / rating

label.

Does frost form on
the evaporator?

Appliance does
not get cold
enough

PARTIAL
RESTRICTION

CAUSE STATE OF UNIT STATE OF EVAPORATOR TEMPERATURE

OF COMPRESSOR

COMMENTS

WHOLE
RESTRICTION

Appliance does
not get cold

NO

- 27 -

5.

DE

SCRIPTION

OF PCB

(Models：CWR461DZ, CWR262DZ, CWR1101DZ, CWR1551DZ)

Figure 55

(Models：CWF340DZ)

Figure 57

- 28 -

5.

DE

SCRIPTION

OF PCB

(Models：CWR1551DD)

(Models：CWR1431TZ)

DATE REVISION NOTES:

9/22/2017 Initial Document

10/16/2017 Minor Text and Title Revision

EdgeStar, 8606 Wall St, Suite 1800, Austin, TX 78754

support.edgestar.com • [e-mail] • edgestar.com

*Warranty service should be performed by an authorized service representative only.