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Document Type: Service Manual
Version 1.2 10272017
SERVICE MANUAL
Dual Zone Cooler
MODEL:
AWC151DZ, AWC241DZ, AWC241TDZ
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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CONTENTS
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SAFETY PRECAUTIONS .............................................................................................................................................................2
PARTS IDENTIFICATION .........................................................................................................................................................3-5
DISASSEMBLY........................................................................................................................................................................6-13
DOOR .......................................................................................................................................................................................6
WOODEN SHELVES................................................................................................................................................................6
LAMP ………… .........................................................................................................................................................................7
COLD CATALYST SYSTEM..............................................................................................................................................8-10
DISPLAY BOARD & CONTROL BOARD...........................................................................................................................7-10
POWER BOARD & TRANSFORMER ....................................................................................................................................10
SENSOR & FAN................................................................................................................................................................11-12
COMPRESSOR PTC STARTER & OVERLOAD PROTECTOR......................................…………………………….…….12-13
TROUBLESHOOTING.........................................................................................................................................................13-16
COMPRESSOR COMPONENTS ..........................................................................................................................................13
ANOTHER ELECTRIC COMPONENT ..................................................................................................................................14
SERVICE DIAGNOSIS CHART.............................................................................................................................................15
REFRIGERATING CYCLE ....................................................................................................................................................16
DESCRIPTION OF PCB .........................................................................................................................................................17
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.
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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.
DATE REVISION NOTES:
9/22/2017 Initial Document
10/16/2017 Minor text and title edits
10/27/2017 Text edits
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2. PARTS IDENTIFICATION
Models：AWC241DZ
Page 5
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2. PARTS IDENTIFICATION
Models：AWC241TDZ
Page 6
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3. DISASSEMBLY
3-1 DOOR
(Models：AWC151DZ, AWC241DZ)
Loosen 2 bolts securing the lower door axis to the lower
hinge to remove the door. (Figure 1)
Lower
Door Axis
BOLT
Figure 1
(Models：AWC241TDZ)
Loosen 2 bolts securing the lower door axis to the lower
hinge to remove the door. (Figure 2)
Figure2
3-2 WOODEN SHELVES:
(Model：AWC151DZ, AWC241DZ)
you must pull the shelves approximately 1/3 out of the rail
compartment.
To remove the shelves out of the rail, pull each shelf
approximately 1/3 out. Use a long flat screwdriver to press
down the right plastic notch as shown in Figure 3 and at the
same time lift the left plastic notch as shown in Figure 3.
Then proceed to pull out the shelf slowly.
Figure 3
3-3 WOODEN SHELVES:
(Model： AWC241TDZ)
1. Open the door completely.
2. Remove all of the contents loaded on the shelf, if
applicable.
3. Line up the shelf notches with the rail posts as
indicated below. This will require you to hold on to both
rails as you
move the shelf to line up the posts with the notches on
both sides of the shelf.
4. Evenly lift the shelf up and then pull the shelf out.
(Figure 4)
Figure 4
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
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3. DISASSEMBLY
3-4 TOP LAMP
(Models：AWC151DZ, AWC241DZ,AWC241TDZ)
1.
1 Loosen four screws. (figure 6)
Figure 6
screw
2. Unplug the led light connector. (figure 7)
Figure 7
3. Loosen four screws. (figure 8)
Figure 8
screw
4.
Pull out the LED light. The LED is pictured below. (figure 9)
Figure 9
3-5 BROADSIDE LAMP
(Models：AWC151DZ, AWC241DZ,AWC241TDZ.)
1.
Pull the lamp cover.
2. Separate the claw fixed to the LED light. Separate the
lead
wire housing. (figure 10)
Figure 10
3. The LED light is pictured below.
(figure 11)
Figure 11
3-6 DISPLAY BOARD &
(Models：AWC151DZ)
1. Loosen four screws. (figure 12)
screw
Figure 12
2. Lift up the cover and pull it out.. (figure 13)
Figure 13
conn
ector
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3. DISASSEMBLY
3. Loosen two screws. (figure 14)
screw
Figure 14
4. Find out the display board connector. (figure 15)
Figure 15
5. Pull out the air duct board assemby from the cabinet,
then remove the front display support bracket from right
side (figure 16)
Figure 16
6. Loosen two screws. (figure 17)
Figure 17
7. The display board is pictured below.
(figure 18)
Figure 18
(Models：AWC241DZ)
1. Loosen four screws. (figure 19)
screw
Figure 19
2. Lift up the cover and pull it out. (figure 20)
Figure 20
3. Loosen two screws. (figure 21)
Figure 21
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3. DISASSEMBLY
4.Find out the display board connector. (figure 22)
Figure 22
5.Pull out the air duct board assembling from the cabinet, then
remove the front display support bracket from left side (figure
23)
Figure 23
6. Loosen two screws. (figure 24)
Figure 24
7. The display board is like below. (figure 25)
Figure 25
(Models：AWC241TDZ)
1. Loosen five screws. (figure 2 6 )
Figure 26
screw
2. Remove two screws from both side of air duct board C
(figure 27)
Figure 27
screw
3. Remove screws from the lower side of air duct board C
(figure 28)
Figure 28
screw
4. Lift up the air duct board B cover and pull it out (figure 29)
Figure 29
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3. DISASSEMBLY
5. Find out the display board connector(figure 30)
Connector
Figure 30
6. Pull out the air duct board assembling from the cabinet,
then remove the front display support bracket from left side.
(figure 31)
Figure 31
7. Loosen two screws. (figure 32)
Figure 32
8. The display board is like below. (figure 33)
Figure 33
3-5 CONTROL BOARD & TRANSFORMER
(Models：AWC151DZ)
1． Loosen three screws. (figure 34)
Figure 34
2. The power board & transformer are like below. (figure 35)
Figure 35
(Models：AWC241DZ,AWC241TDZ)
1. Loosen three screws. (figure 36)
Figure 36
2. The power board & transformer are like below. (figure 36)
Figure 36
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3. DISASSEMBL
Y
3-6 SENSOR & FAN
(Models：AWC151DZ)
1. Loosen six screws. Pull out the rear air duct cover.
(figure 37)
Carbon Filter
fan
Screw
Sensor
Figure 37
2.
Loosen 1 screw to replace the sensor & fan.
(figure 38)
wire housing
PTC Heater
screw
evaporator
defrost
sensor
Figure 38
(Models：AWC241DZ)
1. Loosen six screws. Pull out the rear air duct cover. (figure
(figure 39)
Screw
fan
cold catalyst
Sensor
Figure 39
2.
Loosen 1 screw to replace the sensor & fan.
(figure 40)
evaporator
defrost
sensor
wire housing
screw
PTC Heater
Figure 40
(Models：AWC241TDZ)
1. Loosen screws. Pull out the rear air duct cover.
(figure 41)
sensor
fan
cold catalyst
Sensor
fan
screw
Figure 41
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3. DISASSEMBLY
2.
Loosen 1 screw to replace the sensor & fan.
(figure 42)
defrost
sensor
evaporator
Figure 42
screw
wire housing
PTC Heater
3-7 COMPRESSOR PTC STARTER & OVERLOAD
PROTECTOR
(Models：AWC151DZ, AWC241DZ)
1. Open the box near compressor, The starter and overload
protector are located inside. (figure 43)
Figure 43
2. Dismantle the compressor PTC starter and overload
protector. (figure 44)
Figure 44
3. The compressor PTC starter and overload protector is like
below. (figure 45)
Figure 45
(Models：AWC241TDZ)
1、Open the box near compressor, The starter and overload
protector are located inside.(figure 46)
Figure 46
2、 Remove the compressor junction box. (figure 47)
Figure 47
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3. DISASSEMBLY
1
3、 The compressor PTC starter and overload protector is
pictured below. (figure 48)
Figure 54
Figure 48
4-1 COMPRESSOR 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.
Is it normal?
Check the resistance
of two terminals in
PTC-Starter.
Is it 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.
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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 ANOTHER EL
ECTRIC 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.
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4. TROUBLESHOOTING
4-3 SERVICE DIAGNOSIS CHART
Problem
Possible Cause
Appliance
does not operate.
Not plugged in.
The appliance is turned off.
The circuit breaker tripped or a blown fuse.
Appliance i
s not cold enough.
Check the
temperature control setting. External
environment may require a higher setting.
If ambient room temp too high, adjust control setting.
The
door is opened too often.
The door is not closed completely.
The door gasket does not seal properly.
Turns on and off frequently.
The room temperature is hotter than normal.
A large amount of contents has been added to the appliance.
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 plugged 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 appliance is level.
The appliance seems to make too much noise.
The rattling 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 refrigeration
appliance
.
Contraction and expansion of the inside walls may cause
popping and crackling noises.
The appliance is not level.
The door will not close properly.
The appliance is not level.
The door was reversed and not properly installed. The gasket is
dirty.
The shelves are out of position.
Display error code “E1”
The air sensor has an open circuit. Connection to main control
PCB is with yellow color wires. Check the circuit, if it is normal,
the sensor may need to be replaced.
Display error code “E2”
The air sensor has a short circuit. Connection to main control
PCB is with yellow color wires. Check the circuit, if it is normal,
the sensor may need to be replaced.
Display error code “E3”.
The defrost sensor has an open circuit. Connection to main
control PCB is with red color wires. Check the circuit, if it is
normal, the sensor may need to be replaced.
Display error code “E4”.
The defrost sensor has a short circuit. Connection to main
control PCB is with red color wires. Check the circuit, if it is
normal, the sensor may need to be replaced.
Display error code “E7”.
The air sensor has an open circuit. Connection to main
control PCB is with white color wires. Check the circuit, if it
is normal, the sensor may need to be replaced.
Display error code “E8”.
The air sensor has a short circuit. Connection to main
control PCB is with white color wires. Check the circuit, if it
is normal, the sensor may need to be replaced.
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4. TROUBLESHOOTING
4-4 REFRIGERATING
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 specication plate / rating
label.
• A little refrigerant discharges
• Normal cooling is possible when
charging refrigerant of regular amount
stated on specication 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
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5.
DES
CRIPTION
OF PCB
(Models：AWC151DZ AWC241DZ AWC241TDZ))
Figure 56
Page 18
DATE REVISION NOTES:
9/22/2017 Initial Document
10/16/2017 Minor text and title edits
10/27/2017
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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