PARTS IDENTIFICATION ....................................................................................................................................................... 4
TO REMOVE THE DISPENSER ...........................................................................................................................................6
FAN AND FAN MOTOR........................................................................................................................................................ 7
DEFROST CONTROL ASSEMBLY...................................................................................................................................... 7
CONTROL BOX-REFRIGERATOR ...................................................................................................................................... 7
MULTI DUCT........................................................................................................................................................................ 7
TO REMOVE THE COVER PTC...........................................................................................................................................9
COMPRESSOR AND ELECTRIC COMPONENTS............................................................................................................ 11
PTC AND OLP.................................................................................................................................................................... 12
OTHER ELECTRICAL COMPONENTS ............................................................................................................................. 13
SERVICE DIAGNOSIS CHART.......................................................................................................................................... 14
OPERATION PRINCIPLE & REPAIR METHOD OF ICEMAKER .................................................................................. 17-20
DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM ............................................................................................... 21-43
EXPLODED VIEW & REPLACEMENT PARTS LIST ..................................................................................................... 44-54
SAFETY PRECAUTIONS
Please read the following instructions before servicing your
refrigerator.
1. Check the refrigerator for current leakage.
2. To prevent electric shock, unplug before servicing.
3. Always check line voltage and amperage.
4. Use standard electrical components.
5. Don't touch metal products in the freezer with wet
hands. This may cause frostbite.
6. Prevent water from spiling onto electric elements or the
machine parts.
- 2 -
7. Before tilting the refrigerator, remove all materials from
on or in the refrigerator.
8. When servicing the evaporator, wear gloves to prevent
injuries from the sharp evaporator fins.
9. Service on the refrigerator should be performed by a
qualified technician. Sealed system repair must be
performed by a CFC certified technician.
1. SPECIFICATIONS
22 cu. Ft. (22.4 cu. Ft.)
ITEMSSPECIFICATIONS
DOOR DESIGNSide Rounded
DIMENSIONS
NET WEIGHT
COOLING SYSTEMFan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM
DOOR FINISHVCM, Stainless
HANDLE TYPE Bar
INNER CASEABS Resin
INSULATIONPolyurethane Foam
W(836)x D(870)x H(1764) mm
W(32.91)x D(34.25)x H(69.45) in
128.4 Kg
283.29 pounds
Full Automatic
Heater Defrost
ITEMSSPECIFICATIONS
VEGETABLE TRAYOpaque Drawer Type
COMPRESSORPTC Starting Type
EVAPORATORFin Tube Type
CONDENSERWire Condenser
REFRIGERANTR-134a (115 g)
LUBRICATING OILISO10 (220 ml)
DEFROSTING DEVICESHEATH HEATER
REFRIGERATOR60 W (2EA)
LAMP
FREEZER60 W (1EA)
- 3 -
2. PARTS IDENTIFICATION
- 4 -
A
B
C
D
E
F
G
H
J
K
L
M
N
O
P
I
A
Digital Sensor Control*
B
Refrigerator Light
C
Shelves
D
Chef Fresh
E
Can Dispenser
F
Optibin Crisper
Keeps fruits and vegetable fresh and crisper
G
Customcube Icemaker
H
Ice Bin
I
Full Widht Wire Basket
J
Wire Durabase
K
Filter (inside)*
L
Dairy Bin
M
Egg Box
N
Design-A-Door Bins
O
Freezer Light
P
Wire Basket
*On some models
3. DISASSEMBLY
3-1 DOOR
Left Door
Disconnect water supply tube by pushing back
on the disconnect ring (3).
Loosen the cover screw (1).
Disconnect door switch wire (2).
Attach the tube on the door with door.
Pull out the tube (4).
Disconnect wire harness (5).
Loosen screws (6) and lift off the top hinge (7).
Place the door on a non-scratching surface with
the inside up.
Right Door
Loosen the cover screw (1).
Disconnect door switch wire (2).
Disconnect wire harness (4).
Remove the ground screw (8).
Loosen screws (6) and lift off the top hinge (7).
Place the door on a non-scratching surface with
the inside up.
2. Remove gasket bracket clips
There are two clips on each door. Start bracket removal
near one of the middle clips.
1) Pull gasket back to expose gasket bracket clip and
door frame.
2) Insert a flat tip screwdriver into seam between gasket
bracket and door frame and pry back until clips snaps
out.
3) Continue prying back along seam until all clips snap
out.
Door
Frame
Flat Tip
Screwdriver
3. Remove gasket
Pull gasket free from gasket channel on the three
remaining sides of door.
Gasket
Bracket Clip
Figure 3
Gasket
Bracket
Left
Figure 1
Door Gasket Removal
1. Remove door frame cover
Starting at top of cover and working down, snap cover
out and away from door.
Frame Cover
Handle
Right
Figure 2
Figure 4
Door Gasket Replacement
1. Insert gasket bracket clips
1) Insert gasket bracket edge beneath door frame edge.
2) Turn upper gasket bracket spring so that both spring
ends are in the door channel.
3) Push in clip until you hear it snap securely into place.
Gasket
Bracket Clip
Spring
Door
Frame
4) Push in remaining two clips until you hear each snap
securely into place.
Note: Make sure that no part of gasket bracket edge
protrudes from beneath door frame edge.
CorrectIncorrect
Figure 5
- 5 -
2. Insert gasket into channel
1) Snap gasket assembly into the door bracket.
<Inserting the Gasket Assembly into the Bracket Door>
Correct
Incorrect
Figure 6
3-2 TO REMOVE THE DISPENSER
1. Use fiat tip screwdriver to pry back hooks on botton
underside of cover dispenser.
Figure 9
2. Pry off cover dispenser.
2) Press gasket into channels on the three remaining
sides of door.
Figure 7
3. Replace door frame cover
Starting at top of cover and working down, snap cover
back into door.
Figure 10
Disconnect wire harness.
3. Replace cover dispenser in opposite manner and order
of removal.
Figure 8
- 6 -
3-3 FAN AND FAN MOTOR
GRILLE ASSEMBLY
DEFROST-CONTROL
ASSEMBLY
CONTROL BOX
COVER LAMP
1. Remove the freezer shelf. (If your refrigerator has an
icemaker, remove the icemaker first)
2. Remove the plastic guide for slides on left side by
unscrewing phillips head screws.
3. Remove the grille by removing one screw and pulling the
grille forward.
4. Remove the Fan Motor assembly by loosening 2 screws
and disassembling the shroud.
5. Pull out the fan and separate the Fan Motor and Bracket.
FAN MOTOR
BRACKET
MOTOR
3-5-1 Refrigerator Compartment Lamp
1. Unplug the power cord from the outlet.
2. Remove refrigerator shelves.
3. Release the hooks on both ends of the lamp shield and
pull the shield downward to remove it.
4. Turn the lamp counterclockwise.
5. Assembly is the reverse of disassembly. Replacement
bulb must be the same specification as the original
(Max. 60 W2EA).
FAN
GRILLE
Figure 11
3-4 DEFROST CONTROL ASSEMBLY
Defrost Control assembly consists of Defrost Sensor and
FUSE–M.
The Defrost Sensor works to defrost automatically. It is
attached to the metal side of the Evaporator and senses its
temperature. At 72°C, it turns the Defrost Heater off.
Fuse-M is a safety device for preventing over-heating of
the Heater when defrosting.
1. Pull out the grille assembly. (Figure 12)
2. Separate the connector with the Defrost Control
assembly and replace the Defrost Control assembly
after cutting the Tie Wrap. (Figure 13)
Figure 15
3-5-2 Freezer Compartment Lamp
1. Unplug refrigerator or disconnect power.
2. Reach behind light shield to remove bulb.
3. Replace bulb with a 60-watt appliance bulb.
4. Plug in refrigerator or reconnect power.
3-6 CONTROL BOX-REFRIGERATOR
1. First, remove all shelves in the refrigerator, than remove
the Refrigerator control Box by loosening 2 screws.
Figure 16
2. Remove the Refrigerator Control Box by pulling it
downward.
3. Disconnect the lead wire on the right position and
separate the lamp sockets.
3-5 LAMP
Figure 12
Figure 13
Figure 14
3-7 MULTI DUCT
1. Remove the upper and
lower Caps by using a flat
screwdriver, and remove 2
screws. (Figure 17)
2. Disconnect the lead wire
on the bottom position.
Figure 17
- 7 -
4. ADJUSTMENT
PTC STARTER
SEALED
TERMINAL
COMPRESSOR
MOTOR
C
M
S
M
2
5
6
3
S
PTC
N
L1
OVERLOAD PROTECTOR
Resistance Starter Capacitor Running
4-1 COMPRESSOR
4-1-1 Role
The compressor intakes low temperature and low pressure
gas from the evaporator of the refrigerator and compresses
this gas to high-temperature and high-pressure gas. It then
delivers the gas to the condenser.
4-1-2 Composition
The compressor includes overload protection. The PTC
starter and OLP (overload protector) are attached to the
outside of the compressor. Since the compressor is
manufactured to tolerances of 1 micron and is hermetically
sealed in a dust and moisture-free environment, use
extreme caution when repairing it.
4-1-3 Note for Usage
(1) Be careful not to allow over-voltage and over-current.
(2) If compressor is dropped or handled carelessly, poor
operation and noise may result.
(3) Use proper electric components appropriate to the
Particular Compressor in your product.
(4) Keep Compressor dry.
If the Compressor gets wet (in the rain or a damp
environment) and rust forms in the pin of the Hermetic
Terminal, poor operation and contact may result.
(5) When replacing the Compressor, be careful that dust,
humidity, and soldering flux don’t contaminate the inside
of the compressor. Contamination in the cylinder may
cause noise, improper operation or even cause it to
lock up.
4-2 PTC-STARTER
4-2-1 Composition of PTC-Starter
(1) PTC (Positive Temperature Coefficient) is a no-contact
semiconductor starting device which uses ceramic
material consisting of BaTiO
(2) The higher the temperature is, the higher the resistance
value. These features are used as a starting device for
the Motor.
4-2-2 Role of PTC-Starter
(1) The PTC is attached to the Sealed Compressor and is
used for starting the Motor.
(2) The compressor is a single-phase induction motor.
Durign the starting operation, the PTC allows current
flow to both the start winding and main winding.
4-2-3 PTC-Applied Circuit Diagram
● Starting Method for the Motor
Figure 18
4-2-4 Motor Restarting and PTC Cooling
(1) It requires approximately 5 minutes for the pressure to
equalize before the compressor can restart.
(2) The PTC device generates heat during operation.
Therefore, it must be allowed to cool before the
compressor can restart.
4-2-5 Relation of PTC-Starter and OLP
(1) If the compressor attempts to restart before the PTC
device is cooled, the PTC device will allow current to
flow only to the main winding.
(2) The OLP will open because of the over current
condition. This same process will continue (3 to 5
times) when the compressor attempts to restart until
the PTC device has cooled. The correct OLP must be
properly attached to prevent damage to the
compressor.
Parts may appear physically identical but could have
different electrical ratings. Replace parts by part
3.
number and model number. Using an incorrect part
could result in damage to the product, fire, injury, or
possibly death.
4-2-6 Note for Using the PTC-Starter
(1) Be careful not to allow over-voltage and over-current.
(2) Do not drop or handle carelessly.
(3) Keep away from any liquid.
If liquid such as oil or water enters the PTC,
PTC materials may fail due to breakdown of their
insulating capabilities.
(4) If the exterior of the PTC is damaged, the resistance
value may be altered. This can cause damage to the
compressor and result in a no-start or hard-to-start
condition.
(5) Always use the PTC designed for the compressor and
make sure it is properly attached to the compressor.
Parts may appear physically identical but could have
different electrical ratings. Replace parts by part
number and model number. Using an incorrect part
could result in damage to the product, fire, injury, or
possibly death.
Compressor and protects the Motor by opening the
circuit to the Motor if the temperature rises and
activating the bimetal spring in the OLP.
(2) When high current flows to the Compressor motor, the
Bimetal works by heating the heater inside the OLP,
and the OLP protects the Motor by cutting off the
current flowing to the Compressor Motor.
4-3-2 Role of the OLP
(1) The OLP is attached to the Sealed Compressor used
for the Refrigerator. It prevents the Motor Coil from
being started in the Compressor.
(2) For normal operation of the OLP, do not turn the Adjust
Screw of the OLP in any way.
4-4 TO REMOVE THE COVER PTC
(1) Remove the Cover Back M/C.
(2) Disconnect two housing upper side of comp connected
in.
(3) Loosen two screws on comp base.
Figure 19
(4) Use a L-shaped flap tool to pry off the cover.
(5) Assembly in reverse order of disassembly.
- 9 -
5. CIRCUIT DIAGRAM
- 10 -
5. CIRCUIT DIAGRAM
- 10 -
6. TROUBLESHOOTING
1
2
3
4
5
2
5
5
3
5
1
43
YES
NO
YES
The range of resistance is between 1~50Ω(ok)
Open or short
YES
YES
NO
NO
6-1 COMPRESSOR AND ELECTRIC COMPONENTS
Power Source.
Remove PTC-Starter
from Compressor and
measure voltage
between Terminal C of
Compressor and
Terminal 5 or 6 of PTC.
No Voltage.
Applied voltage isn't
in acceptable range.
(115V ±10%)
(Rated Voltage
±10%)?
OLP disconnected?
Advise customer that
power supply needs to be
checked by an electrician.
Replace OLP.
Check connection
condition.
Reconnect.
Check
resistance of
Motor
Compressor.
Check
resistance of
PTC-Starter.
Check resistance
between M-C, S-C and
M-S in Motor
Compressor.
Check resistance of
two terminals in
PTC-Starter.
Replace
Compressor.
Reference Page12.
Check OLP.
Check resistance of two
terminals in OLP.
Reference Page12.
Check
starting state.
Check the power supply
under load.
(Compressor attempting
to re-start after being off
for 5 minutes).
Supply
voltage rating
with ±10%.
Did
compressor
start?
Compressor
is OK
Replace the
compressor
- 11 -
6-2 PTC AND OLP
65
Shows continuity
Open
Normal operation of
Compressor is
impossible or poor.
Separate PTC-Starter
from Compressor and
measure resistance
between No. 5 and 6
of PTC-Starter with a
Tester.
(Figure 20)
Separate OLP from
Compressor and check
resistance value
between two terminals
of OLP with a Tester.
(Figure 21)
Observation value is
115V/60Hz : 6.8Ω±30%
The resistance value
is 0Ω (short) or
∞ (open).
Check another
electric component.
Replace OLP.
Replace PTCStarter.
Figure 20
Figure 21
- 12 -
6-3 OTHER ELECTRICAL COMPONENTS
▼ Not cooling at all
Compressor
doesn't run.
▼ Poor cooling performance
Compressor runs
poorly.
Check for open short or
incorrect resistance readings
in the following components
a. Starting devices
b. OLP
c. Compressor coil
d. Wiring harness
Check starting
voltage.
Check voltage at
starting devices.
Cause
Short, open, or broken.
Poor contact
or shorted.
Coil open or shorted.
Poor contact
or shorted.
Low voltage.
Poor or broken or
open contact.
Replace
indicated component.
Advise customer that
the Power supply
needs to be checked
by an electrician.
Replace
indicated component.
Fan motor
doesn't run.
Heavy frost buildup on
EVAPORATOR.
Check current flowing
in sub-coil of
Compressor.
Check rating of OLP.
Check wiring circuit.
Check Fan Motor.
Check current flow in
the following
components:
Sensor
Fuse-M
Check current flow in
the Defrost Heater.
Shorted.
Lack of capacity.
Wire is open or
shorted.
Coil is shorted
or open.
Open.
Open.
Replace
indicated component.
Replace
indicated component.
Replace
Defrost Heater.
- 13 -
6-4 SERVICE DIAGNOSIS CHART
COMPLAINTPOINTS TO BE CHECKEDREMEDY
No Cooling.
Cools poorly.
Food in the
Refrigerator
is frozen.
Condensation or ice
forms inside
the unit.
Condensation forms
in the Exterior Case.
There is abnormal
noise.
• Is the power cord unplugged from the outlet?
• Check if the power switch is set to OFF.
• Check if the fuse of the power switch is shorted.
• Measure the voltage of the power outlet.
• Check if the unit is placed too close to the wall.
• Check if the unit is placed too close to the stove,
gas cooker, or in direct sunlight.
• Is the ambient temperature too high or
the room door closed?
• Check if food put in the refrigerator is hot.
• Did you open the door of the unit too often
or check if the door is sealed properly?
• Check if the Control is set to Warm position.
• Is food placed in the cooling air outlet?
• Check if the control is set to colder position.
• Is the ambient temperature below 41°F(5°C)?
• Is liquid food sealed?
• Check if food put in the refrigerator is hot.
• Did you open the door of the unit too
often or check if the door is sealed properly?
• Check if the ambient temperature and humidity
of the surrounding air are high.
• Is there a gap in the door gasket?
• Is the unit positioned in a firm and even place?
• Are any unnecessary objects placed
in the back side of the unit?
• Check if the Drip Tray is not firmly fixed.
• Check if the cover of the compressor enclosure
in the lower front side is taken out.
• Plug into the outlet.
• Set the switch to ON.
• Replace the fuse.
• If the voltage is low, correct the wiring.
• Place the unit about 4 inches (10 cm) from the wall.
• Place the unit away from these heat sources.
• Lower the ambient temperature.
• Put in foods after they have cooled down.
• Don't open the door too often and close
it firmly.
• Set the control to Recommended position.
• Place foods in the high-temperature section.
(front part)
• Set the control to Recommended position.
• Set the control to Warm position.
• Seal liquid foods with wrap.
• Put in foods after they have cooled down.
• Don't open the door too often and close
it firmly.
• Wipe moisture with a dry cloth. It will disappear
in low temperature and humidity.
• Fill up the gap.
• Adjust the Leveling Screw, and position the
refrigerator in a firm place.
• Remove the objects.
• Fix the Drip Tray firmly in the original position.
• Place the cover in its original position.
Door does not
close well.
Ice and foods
smell unpleasant.
● Other possible problems:
Check if frost forms in
the freezer.
Check the
refrigeration system.
Check the
Thermistor.
• Check if the door gasket is dirty with
an item like juice.
• Is the refrigerator level?
• Is there too much food in the refrigerator?
• Check if the inside of the unit is dirty.
• Are foods with a strong odor unwrapped?
• The unit smells of plastic.
Not
defrosting
The system
is faulty.
The operation of
the Thermistor is
incorrect.
• Clean the door gasket.
• Position in a firm place and level the
Leveling Screw.
• Make sure food stored in shelves does not prevent
the door from closing.
• Clean the inside of the unit.
• Wrap foods that have a strong odor.
• New products smell of plastic, but this
will go away after 1-2 weeks.
Check Components
of the defrosting
circuit.
Perform sealed
system repair.
Replace the
Thermistor.
- 14 -
6-5 REFRIGERATION CYCLE
▼ Troubleshooting Chart
CAUSE
PARTIALFreezer Low flowing sound ofA little higher• Refrigerant level is low due
LEAKAGEcompartment and Refrigerant is heard andthan ambient• to a leak.
LEAKAGE
COMPLETE Freezer Flowing sound of refrigerantEqual to ambient• No discharging of Refrigerant.
LEAKAGEcompartment andis not heard and frost isn'ttemperature.• Normal cooling is possible by
CLOGGED BY DUST
PARTIALFreezer Flowing sound of refrigerantA little higher• Normal discharging of the
CLOGcompartment andis heard and frost formsthan ambient • refrigerant.
WHOLE
CLOG
MOISTURECooling operationFlowing sound of refrigerantLower than• Cooling operation restarts
CLOGstops periodically.is not heard and frost melts.ambient• when heating the inlet of the
COMPRESSION
COMP-Freezer andLow flowing sound ofA little higher • Low pressure at high side
DEFECTIVE
RESSIONRefrigeratorrefrigerant is heard andthan ambient• of compressor due to low
STATE OF
THE UNIT
Refrigerator don't frost forms in inlet only.temperature.• Normal cooling is possible by
cool normally.• restoring the normal amount of
Refrigerator don't formed.• restoring the normal amount of
cool normally.• refrigerant and repairing the leak.
Refrigerator don't in inlet only.temperature.• The capillary tube is faulty.
cool normally.
Freezer
compartment and
Refrigerator don't cool.
don't cool.frost forms in inlet only.temperature.• refrigerant level.
STATE OF THE
EVAPORATOR
Flowing sound of refrigerantEqual to ambient• Normal discharging of the
is not heard and frost isn'ttemperature.• Refrigerant.
formed.
TEMPERATURE
OF THE
REMARKS
COMPRESSOR
• refrigerant and repairing the leak.
temperature.• capillary tube.
NO COMP-No compressingFlowing sound of refrigerantEqual to ambient• No pressure in the high
RESSIONoperation.is not heard and there istemperature.• pressure part of the
no frost.• compressor.
- 15 -
6-5-1 SEALED SYSTEM DIAGNOSIS
“Not Cooling” Complaint
All components operating, No airflow problems, Not frosted up as a defrost problem
problem has been isolated to sealed system area
Frost
Pattern?
Equalization
Test
Partial
Very Fast
Inefficient
Compressor
Partial
Restriction
Complete
Restriction
Equalization
Test
Condenser
Temperature
None
Very Fast
Very SlowVery Slow
Hotter than Normal
Air/Low Side
Leak
Loss of Change
Compressor Not
Pumping
Cap Tube
Sound
Room Temperature
Trace of Oil
Undercharge
Leak
Yes
No
Faint
Fast
None to Weak
(The equalization test is trying to restart a compressor using a start kit after it has been operating.)
- 16 -
7. OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER
• Adjusts EJECTOR to Start Position with power on.
Power On
Start Position
Ice Making
Mode
Harvest
Mode
Park Position
Fill
Test Mode
• Waits until water becomes cold after starting the
ice making operation.
• Runs MOTOR to drop ice from the tray into the ICE BIN.
• Performs Ice Making Mode after supplying water by operating
the SOLENOID in ICE VALVE.
• To operate LINE and SERVICE, press and hold the Fill Key
for 3 seconds. The ice maker will run through 3 stages:
Harvest Fill Icemaking.
• With the detect lever, checks if the ICE BIN is full.
Power (On/ Off) Switch
Fill Key
7-1 OPERATION PRINCIPLE
7-1-1 Operation Principle of IceMaker
1. Turning the Icemaker stop switch off (O) stops the ice making function.
2. Setting the Icemaker switch to OFF and then turning it back on will reset the icemaker control.
- 17 -
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