Kenmore 795.51012.001, 795.51023.001, 795.51013.001, 795.51014.001, 795.51016.001 Service Manual

TM

SXS FREEZER REFRIGERATOR

REFRIGERATOR

SERVICE MANUAL

CAUTION
BEFORE SERVICING THE PRODUCT
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

MODELS:

795.51022.001

795.51023.001

795.51024.001

795.51026.001

795.51029.001

795.51012.001

795.51013.001

795.51014.001

795.51016.001

795.51019.001

MFL62078230

Printed in Mexico

Sears Brands Management Corporation, Hoffman Estates, IL 60179 U.S.A.

www.sears.com

ECN (Engineering Change Number)

Rev.01
New Cover Hinge (new item is not replaceable with previous revision)

CONTENTSCONTENTS

SAFETY PRECAUTIONS ........................................................................................................

1. SPECIFICATIONS ...............................................................................................................

2. PARTS IDENTIFICATION ....................................................................................................

3. DISASSEMBLY ...................................................................................................................

1. Door Alignment..................................................................................................................

2. Install Water Filter..............................................................................................................

3. Refrigerator Shelves..........................................................................................................

4. Freezer Shelf.....................................................................................................................

5. How to Control the amount of water supplied to ice maker................................................

4. HOW TO DISASSEMBLY AND ASSEMBLY.......................................................................

1. Removing and Replacing Refrigerator door.......................................................................

2. Handle Removal................................................................................................................

3. How to Remove Swtich Lamp............................................................................................

4. Fan Shroud Grille...............................................................................................................

5. Ice maker Assembly...........................................................................................................

6. Water Valve Disassembly Method.....................................................................................

7. Water Valve Tubes Assembly Method................................................................................

8. Disassemble of fan Motor..................................................................................................

9. Disassemble of Tray Drip...................................................................................................

10. Dispenser...........................................................................................................................

5. MICOM FUNCTION .............................................................................................................

1. Monitor Panel.....................................................................................................................

6. EXPLANATION FOR MICOM CIRCUIT ..............................................................................

1. Explanation for PCB circuit...............................................................................................

7. ICEMAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR............................

1. Working Principles............................................................................................................

2. Function on Icemaker........................................................................................................

3. Ice maker Troubleshooting................................................................................................

4. Icemaker Circuit................................................................................................................

8. CIRCUIT DIAGRAM.............................................................................................................

9. TROUBLE DIAGNOSIS.......................................................................................................

10. EXPLODED VIEW .............................................................................................................

3
4
6
7
7
8
9
9
10
12
12
13
14
15
15
16
17
18
19
20
22
22
32
32
47
47
48
51
52
53
54
134

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 frost bite.

6.Prevent water from spiling on to electric
elements or the machine parts.

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.

- 3 -

1. SPECIFICATIONS

1-1. DISCONNECT POWER CORD BEFORE SERVICING

IMPORTANT: Reconnect all grounding devices.

All parts of this appliance capable of conducting electrical current are grounded. If grounding wires, screws, straps, clips, nuts
or washers used to complete a path to ground are removed for service, they must be returned to their original position and
properly fastened.

1-2. IMPORTANT NOTICE

This information is intended for use by individuals possessing adequate background of electrical, electronic and mechanical
experience.
Any attempt to repair a major appliance may result in personal injury and property damage. The manufacturer or seller cannot
be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.

ELECTRICAL SPECIFICATIONS

1-3.

Freezer temperature control (Middle setting)

Defrost Control ..............................................................................................................

Defrost Thermostat .......................................................................................................

Electrical Rating : 115VAC, 60Hz...................................................................................

Maximum Current Leakage ...........................................................................................

Maximum Ground Path Resistance ..............................................................................

Energy Consumption......................................................................................................

.................................................................

1-4. NO LOAD PERFORMANCE

Control Position: MID/MID

And Ambient of:

Fresh Food, °F........................................................

Frozen Foor, °F........................................................

Percent Running Time ..............................................

1-5. REFRIGERATION SYSTEM

Minimum Compressor Capacity Vaccum.............................

Minimun Equalized Pressure

@70°F..............................................................

@90°F..............................................................

Refrigerant R134a..........................................................

Compressor...............................................................

70°F

33°F to 41°F

-4°F to +4°F
25% - 35%

21 in

49 PSIG
56 PSIG

6.5 oz

956 BTU/hr

Fresh Food, °F......................................................

Frozen Foor, °F.....................................................

Percent Running Time ...........................................

1-6. INSTALLATION

Clearance must be provided at top, sides and rear of the
refrigerator for air circulation.

At Top.................................................................................

At Sides..............................................................................

At Rear...............................................................................

-6°F to +8°F
Automatic
50°F
1-7 A

0.5mA

0.1 Ohms
27 cu.ft. 590kWh/yr (Energy Star)

90°F

33°F to 41°F

-4°F to +4°F
45% - 60%

2 in
2 in
2 in

- 4 -

1-7. REPLACEMENT PARTS

Relay...........................................................

Overload.....................................................

Defrost Thermostat.....................................

Defrost Heater............................................

Evaporator Fan Motor.................................

Capacitor CR..............................................

Capacitor CS..............................................

Compressor (Hi-Side).................................

Evaporator (Lo-Side)..................................

Condenser..................................................

Dryer............................................................

Condenser Fan Motor.................................

Temperature Control...................................

Main Control................................................

1-8. AIR FLOW

EBG42993602
EAF39584205
6615JB2002R
5300JB1102D

5901JA1022A
0CZZJB2010H
J513-00012P
TCA31748011
ADL72916201
5403JA1003A
5851JA2007A
5901JJ1019A
EBR61526804
EBR61526803
EBR64585301

PERFORMANCE DATA

(NORMAL OPERATING CONDITIONS)

SYSTEM PRESSURE (PSIG)

AMB WATTS

HIGH SIDE LOW SIDE

70°F 98 (+10 / -10) 98 (+5 / -3) (-5) to (-2)

90°F 98 (+10 / -10) 130 (+3 / -3) (-4) to 1

110°F 103 (+5 / -5) 174 (+5 / -5) (-2) to 3

EVAPORATOR FAN

DRYER

COMPRESSOR

EVAPORATOR

HOT LOOP

CONDENSER

CONDENSER

FAN

COLD AIR

MIXED AIR

AIR RETURN TO
EVAPORATOR

- 5 -

2. PARTS IDENTIFICATION

A

G

H

B

C

D

A

E

A

F

I

J

K

H

L

M

L

N

Use this page to become more familiar with the parts and features. Page references are included for your
convenience.

Note: This guide covers several different models.The refrigerator you have purchased may have some

all of the items listed below. The locations of the features shown below may not match your model.

A

Freezer Door Rack

Automatic Icemaker

B

The ice is produced in the icemaker

and sent to the dispenser.

C

Freezer Lamp

D

Freezer Shelf (With Deco/No Deco)

E

Drawer (Plastic/Wire)

Base Grille

F

G

Dairy Corner

For storage of dairy products
such as butter and cheese.

Refrigerator Lamp

H

Water Filter

I

Refrigerator Shelf

J

Snack Pan

K

For storage of meat or fresh food.

Refrigerator Door Rack (Plastic/Opaque)

L

Vegetable Drawer

M

Coil Tank Water

N

- 6 -

or

3. HOW TO INSTALL THE REFRIGERATOR

DOOR ALIGNMENT

1.

Before adjusting the doors, remove the Base Grille.

If the freezer compartment door is lower than
the refrigerator compartment door, make them
level by inserting flat blade screwdriver into the
groove of the left leveling leg and rotating it
clockwise.

Height

difference

Adjust the level when the refrigerator door is lower than
the freezer door during the installation of the refrigerator.

Tools you need

• Wrench 5/16 in (8 mm)

• Wrench 3/4 in (19 mm)

Height

difference

Keeper nut

Wrench

Left leveling

leg

Height

difference

If the freezer compartment door is higher than the
refrigerator compartment door, make them level by
inserting flat blade screwdriver into the groove of
the right leveling leg and rotating it clockwise.

Height

difference

Height

difference

Adjustment
hinge pin

Up

Down

Using a ¾” (19 mm) wrench, turn the keeper nut clockwise

to lossen the keeper nut.

Using a 5/16” (8 mm) wrench, turn the adjustment hinge pin

c refrigerator clockwise or ounterclockwise to level the and

freezer door.

After adjusting the level door, turn the keeper nut

counterclockwise to tighten.

Do not over tightening the door adjustment screw. The
hinge pin can be pulled out. (Adjustable range of height is a
maximum of ½” (1.27 cm)).

Height

difference

Left leveling leg

AFTER LEVELING THE DOOR HEIGHT

Make sure the front leveling legs are completely
touching the floor.

- 7 -

2. INSTALL WATER FILTER

Installing the water filter

• Filter Reset: When the Filter reset icon turns on, you

have to change the water filter. Press the Filter Reset
button for 3 seconds to turn the icon off .

Before removing or installing water filter:

1. IMPORTANT: Turn off household water supply.

2. Take out the top shelf and move it to the lowest level.

Removing the water filter:

1. For first-time installation, remove filter substitute cap
(A) by turning it counterclockwise a quarter turn and
pulling it down. The substitute cap must be retained

for the future. If the filter is removed and not
replaced, it is necessary to reinstall the substitute
cap to prevent water leaks from the filter housing.

Remove red cap from the filter and insert the two
tabs on the filter tip into the two slots in the
refrigerator filter receptacle. You should feel the filter
entering completely. Turn the filter to the right a quarter
turn clockwise to lock it into place. The locked symbol
will be lined up with the indicator arrow.

After installing water filter

1. Replace the shelf to the initial position.

2. After installing filter, turn on household water supply.

3. Dispense 2.5 gallons (9.46 L) of water to purge the
system, depressing and releasing the dispenser button
(30 seconds ON, 60 seconds OFF). Open the
refrigerator door and check the shelf area for leaks.

2. For subsequent installation, remove old filter by
slowly turning it to the left a quarter turn and pulling it
down.

A

Filter

- 8 -

3. REFRIGERATOR SHELVES

The refrigerator compartment shelf is adjustable so that
you can place it at a height according to space
requirement of foods.

• Slide shelf
Pull the shelf head towards you , then lift both the front
and rear parts of the shelf upward  to remove .

Car e andMai ntenance

3

2

1

NOTE: Make sure to keep shelf horizontal while
removing; otherwise it may drop.

• Fixed shelf
Lightly lift up the front part of shelf  pull the shelf head
towards you , then take it out while lifting the rear part
of shelf .

2

3

1

4. FREEZER SHELF

• Lift the left part of the shelf a bit. Lift it to the direction

, push the right part to the direction k, and take it out.

- 9 -

5. HOW TO CONTROL THE AMOUNT OF
WATER SUPPLIED TO ICE MAKER

1. DISASSEMBLY ICE STORAGE BIN

NOTE: Use both hands to remove the ice bin to avoid

dropping it. If the ice bin does not slide into place easily,
twist the drive device slightly.

• Hold the ice storage bin as shown in the figure 
and pull it out .

2

1

• To assemble the ice storage bin, lift it  while
slightly push it out .

2) Turn on the electricity after connecting water pipe.

1) Press the test switch under the icemaker for two seconds as
shown below.

2) The bell rings (ding ~ dong), the ice tray rotates, and water
comes out the icemaker water tube.

3) The water is supplied into the tray two or three times. The
amount is small each time. Put a container under the ice tray
and press test switch.

4) When the ice tray rotates, the water in it will spill. Collect the
spilled water and discard it.

5) When ice tray has finished rotation, water comes out the
water tube. Check the amount that goes into the ice tray.
(Refer to the drawing below. The optimum amount is 110cc.
(Almost 4 oz.)).

:

NOTE Make sure the bin is fully engaged into the auger

drive . If not, rotate the auger drive in the direction
shown by the arrow until they bin is fully engaged into the
auger drive.

2. DISASSEMBLY ICEMAKER

If you need acces to the Icemaker, follow these steps:

• Lift the ice shelf  and pull it out .

COVER

Power Switch
ON/OFF

Test

switch

Feeler Arm

* It is acceptable is the adjusted water level is less than the
optimum level.

(On the lower

part of icemaker)

2

1

- 10 -

3-2 Control the amount of water supplied to the icemaker.

Caution: • Unplug the power cord from the wall outlet and wait at least three minutes before removing the main PWB cover.

310 Volts are present in the control panel.

Water Supplying Time Control Option

No Water Supply Time Note

DISP S/W

S1 S2

1ON2

9.0

8.0

10.0

11.0

DIP S/W Setting will be depend of

water pressure

1 OFF OFF

2 ON OFF

3 OFF ON

4ON ON

1) The water supplying time is set at 9s when the refrigerator is delivered.

2) The amount of water supplied depends on the setting time and water pressure (city water pressure).

3) If the ice cubes are too small, increase the water supplying time. This happens when too little water is supplied into the ice tray.

4) If the ice cubes stick together, decrease the water supplying time. This happens when too much water is supplied into the ice

tray.

Caution: When adjusting the amount of water supplied, adjust step by step. Otherwise the water may spill over.

Switch ON
Switch OFF

3. When the adjustment of the control switch for the amount of water supplied is complete, check the level of water in the ice.

- 11 -

4. HOW TO DISASSEMBLY AND ASSEMBLE

1. REMOVING AND REPLACING
REFRIGERATOR DOORS

Before removing the doors, remove the base grille.

To remove the right (refrigerator) door:

(1)

(2)

)

(3

(4)

(5)

Type 1

(4)

(5)

1. Open the door. Remove the top hinge cover screw

2. Use a flat blade screwdriver to pry back the hooks
(not shown) on the cabinet underside of the cover (2).
Lift up the cover.

3. Rotate the hinge lever (3) clockwise . Lift the top hinge

(4) free of the hinge lever latch (5).

NOTE: Regardless of hinge lever type, removal process
is the same.

)

(3

Type 2

(1).

Rivet

(2)

(1)

(3)

(5)

(6)

(4)

(7)

Type 1

1. Open the door. Remove the top hinge cover screw (1).

2. Use a flat blade screwdriver to pry back the hooks
(not shown) on the cabinet underside of the cover (2).
Lift up the cover.

3. Disconnect all the wire harnesses (3).

4. Remove the grounding screw (4).

(5)

(7)

(6)

Rivet

Type 2

5. Rotate hinge lever (5) counterclockwise . Lift the top

hinge (6) free of the hinge lever latch (7).

NOTE: Regardless of hinge lever type, removal
process is the same.

CAUTION: When lifting the hinge free of the latch,

be careful that the door does not fall forward.

4. Lift the door from the lower hinge pin.

5. Place the door, inside facing up, on a nonscratching
surface.

CAUTION: When lifting the hinge free of the latch,
be careful that the door does not fall forward.

Removing the left (freezer) door with water line
connection.

Pull up the water feed tube while pressing area

•

(Figure 1) as shown in the figure below.

• NOTE:
part away. Disconnecting the tube under the door
causes about 0.5 liters water to flow out. Put a large
container at end of tube to prevent water from draining
onto the floor.

If a tube end is deformed or abraded, trim the

Figure 1

6. being careful to Lift the door from the lower hinge pin

pull the water lines through the lower hinge pin.

7. Place the door, inside facing up, on a nonscratching
surface.

- 12 -

Reinstalling the right (Refrigerator) door

(1)

(2)

(3)

(4)

(5)

(4)

(5)

Type 1

Type 2

2. HANDLE REMOVAL

Identify you handle type

4

• Type 1

•

Grasp the handle tigthtly with both hands and slide the

handle up (1) (this may require some force).

)

(3

Rivet

keyhole slots (2) on the back of the handle allow

• The
the handle to separate from the mounting screws (3).

CAUTION: When trying to remove or install the handle

if hit wit a hammer, it could be damaged or broken.

1. Place the door onto the lower hinge pin.

2. Fit top hinge (4) over hinge lever latch (5) into
place. Rotate lever (3) counterclockwise to secure

hinge.

NOTE: Regardless of hinge lever type. removal
process is the same.

3. Hook tab on switch side of corner under edge of wire
opening in cabinet top. Position cover (2) into place.
Insert and tighten cover screw (1).

Reinstalling the left (Freezer) door

(2)

(1)

(4)

(5)

(6)

(7)

Type 1

(3)

(7)

(5)

(6)

Rivet

Type 2

CAUTION: When you assemble or dissasemble

handle, you must push and pull with moment force.

Keyhole slots

Screws

mounted

on door

on back of

handle

1. Feed the water tubes through the lower hinge pin and

place the door onto the lower hinge pin.

2. Fit top hinge (6) over hinge lever latch (7) and into
place. Rotate lever (5) clockwise to secure hinge

NOTE: Regardless of hinge lever type, removal
process is the same.

3. Install the grounding screw (4) and connect all the
wire harnesses (3).

4. Hook tab on door switch side of cover (2) under edge
of wire opening in cabinet top. Position cover into
place. Insert and tighten cover screw (1).

5. Reconnect the water tubes by inserting the tubes into
the connectors.

- 13 -

• Type 2

3. HOW TO REMOVE SWITCH LAMP

NOTE: It is ALWAYS recommended to remove the

refrigerator doors when it is necessary to move the
refrigerator through a narrow opening. If necessary,
follow the directions below to remove the door handles.

•

Loosen the set screws with a 3/32” (2.38 mm) Allen

wrench and remove the handle.

NOTE: If
tightened or moved, use a 1/4” (6.35 mm) Allen wrench.

the handle mounting fasteners need to be

Mounting
fasteners

Set screw

1. Open the door. Remove the top hinge cover screw (1).

(2)

(1)

2. Use a flat blade screwdriver to pry back the hooks (not
shown) on the cabinet underside of the cover (2). Lift up the
cover.

3. (3).

Disconnect the wire harnesses

Allen Wrench

(2)

(1)

(3)

(4)

4. To remove the switch (4) press and hold the hooks and
push it out.

(4)

- 14 -

4. FAN SHROUD GRILLE

5. ICEMAKER ASSEMBLY

1. Loosen one screw with a screwdriver blade.

2. Disassembly of an upper grille fan: Hold upper part of an

upper grille fan (U) and pull forward carefully.

3. Disassembly of a lower grille fan: Hold upper part of a

lower grille fan and pull forward carefully.

4. Disassembly of an upper freezer shroud: Hold lower part,

pull forward and disconnect housing A and B.

5. Check for foam sticking conditions around a shroud,

upper freezer and lower freezer during assembling. If
damaged torn, or badly stuck, assemble with a new one afer
sealing well.

Housing A

Housing B

Shroud F(U)

Grille Fan

(U)

Motor

Fan

1. Dispenser Model

1) How to disassemble:
(1) Remove ice bin from the freezer compartment.
(2) Loosen the screw on the upper part of icemaker bracket.
(3) Disconnect icemaker bracket so that it can slide forward.
(4) Disconnect icemaker housing and sensor housing.
(5) Disconnect icemaker horizontally by pressing bracket hook
part. (Don’t disassemble further. The set value may be
changed).

2) The assembly is the reverse order of the above disassembly.

Hook

Icemaker Bracket

Icemaker unit

Bracket

screw

Evaporator

Socket

Lamp

Cover Lamp

Lever

Ice Tray

Insulation

Sensor

Sensor Cover

- 15 -

6. WATER VALVE DISASSEMBLY METHOD

1. Turn off the water supply. Then separate the Water
connection connected to the water valve.

Water Connection

2. Separate the cover back M/C y valve screw.

Cover Back M/C

Valve Screw

3. Separate the housing and pull out the valve.

Housing

Water Valve

- 16 -

7. WATER VALVE TUBES ASSEMBLY METHOD

1) Connect the Water Filter tube (IN) to the water valve.

2) Connect the Water Filter tube (OUT) to the water valve.

3) Connect the Ice maker tube (IN) to the water valve.

4) Connect the Water Tank tube (IN) to the water valve.

The pipe has a Red mark on the end that connects to the water valve, make sure it is the correct tube.

NOTA: For a successful connection, insert the tubes to the water valve until you can see only a line.

4

1

2

3

4

Side View of Water Valve

1

2

3

Water valve

Tubes

1

Water Filter (IN) 5/16”

4

3

Ice maker (IN) 1/4”

Water Tank (IN) 5/16”

4

Red mark in tube

2

Water Filter (OUT 1/4”

- 17 -

8. DISASSEMBLE OF FAN MOTOR

1. Remove screws from water valve and drain pipe using a

phillips screwdriver.

2. Pull down drain pipe to remove it.

4. Remove fan motor by pushing fan motor in direction of the
arrow.

5. Remove the motor from housing and cut tie wrap.

3. Using a small phillips screwdriver remove screws from

bracket motor.

6. Unplug fan motor.

7.- To reinstall repeat the same process but inverted (6 to 1)

- 18 -

9. DISASSEMBLE OF TRAY DRIP

Move

Move

1. Remove guide fan and drain pipe screws using a philips

screwdriver.

2. Remove fan motor by pushing fan motor in direction of

arrow.

4. Remove screws in compressor base in order to release
tray drip.

5. Use a tool to release clips (2) in order to disassemble
guide fan (move to right).

3. Remove screws from wire condenser bracket. Use philips

screwdriver.

6. Turn condenser clockwise carefully in order to remove it
from tray drip. Then remove tray drip carefully. Avoid any
damage to condenser or pipes.

- 19 -

10. DISPENSER

1) Disconnect funnel and button assembly by pulling down

and forward.

Botón

2) Remove the display frame pulling out with both hands on

one side and repeat the process in the other side while pulling
it forward like shows the picture.

4) Loosen four screws with a phillips screwdriver and pull the
funnel assembly to disconnect.

Funnel Assembly

Funnel

The duct cap assembly can be disconnected if the hold lever
connecting screws is loosened with a phillips driver.

Motor Assembly

3) The display assembly can be disconnected by pressing the

top of the dispenser cover and pushing it after separating the
display frame from its housing.

Holder

Lever

6) To install the duct cap assembly, insert one end of the spring
into the right hole of the dispenser lever and insert the other
end into the right hole in the top part of the dispenser. Then
attach the holder at the solenoid switch.

Duct Cap

Assembly

Motor Assembly

- 20 -

7) Dispenser related parts

5

7

8

6

12

16

11

13

18

10

18

14

1 FRAME ASSEMBLY, DISPLAY

9

2 COVER, DISPLAY

3 DECO, DISPLAY

4 PCB ASSEMBLY, DISPLAY

5 FRAME FUNNEL ASSEMBLY

6 SWITCH

7 FRAME, FUNNEL

8 LEVER DISPENSER (BUTTON)

9 FUNNEL

10 BUTTON LEVER

11 MOTOR ASSEMBLY

12 SPRING

17

13 HOLDER LEVEL

14 CAP ASSEMBLY, DUCT

15 CAP, DUCT

16 DISPENSER LEVER, (CAP DUCT)

17 RUBBER, CAP

15

18 DECO, DRAIN

- 21 -

5. MICOM FUNCTION

B

C

A

F

E

D

B

F

E

D

C

A

B

F

E

D

C

A

1. MONITOR PANEL

4 Identify your Control type

• Type A

• Type B

ULTRA ICE function selection.

Filter RESET function selection.

Temperature adjustment button for Freezer compartment.

Dispensing Selection button (Cubed Ice / Water / Crushed Ice).

Temperature adjustment button for Refrigerator compartment.

Lock function button.

- 22 -

1-1. Display Function

1) When the appliance is plugged in, it is set to 37°F for refrigerator and 0°F for freezer. You can adjust the Refrigerator and
the Freezer control temperature by pressing the ADJUST button.

2) When the power initially applied or restored after a power failure, it is set to the previously controlled temperature.

• Type A

Display

OFF Mode

Demonstration

Mode

• Type B

Display

OFF Mode

Demonstration

Mode

1-2. Display OFF Mode

It places display in standby mode until any door is opened or any button is pressed.
Press FRZ TEMP and ULTRA ICE buttons simultaneously to turn ON all leds and 5 seconds after, these will turn OFF with
the recognition sound of “Ding~” (Be sure press both buttons for this to work).
Once the mode activates, all leds are always OFF except to dispensing icon (This depends on last selection dispensed). To
deactivate this mode, perform the same sequence used for activation.

1-3. Demonstration Mode (OFF Mode)

1) Any Door must be opened to enter in this mode.

2) To activate this mode press and hold ULTRA ICE and REF TEMP button over 5 seconds.

3) The display will show the word “OFF” in Freezer and Refrigerator Temperature level.

4) In this mode all loads are turned off(Compressor, Heater, Fans, etc)

5) Lamps and Dispenser Functions will work normally (even in demonstration mode the refrigerator Lamp automatic off
function works normally)

6) To exit Demonstration mode open any Door then press and hold ULTRA ICE and REF TEMP button over 5 seconds
(Display return to normal mode).

- 23 -

1-4. Lock function (dispenser and display button lock)

1) When the refrigerator is first turned on, the buttons are not locked. The display panel shows the padlock unlocked icon.

2) To lock the display, the dispenser, and the control panel, press, and hold the LOCK button for 3 seconds. The locked
pad lock icon is displayed.

3) The LOCK button is the only control feature that remains active in the locked state. The buzzer sound, other control
buttons, and the dispenser are deactivated.

4) To release from the locked state, press and hold the LOCK button again for 3 seconds.

Ex) “LOCK”

Function ON

Ex) “LOCK”

Function OFF

1-5. Filter condition display function

1) There is a replacement indicator for filter cartridge on the dispenser.

2) Water filter needs replacement once six months.

3) At initial power ON, filter indicator is OFF.

4) After six months, filter indicator turns ON to tell you need replace the filter as soon as possible.

5) Once that filter is replaced, press and hold 3 seconds the FILTER button to reset the filter indicator, then, filter
indicator turns OFF.

6) Indicator will turn ON after six months, when you need change the filter again.

In initial Power On

/ Filter RESET

Replace indicator

light on

1-6. ULTRA ICE selection

Please select this function for quick freezing.
This function automatically turns off after a preset time and must be selected each time for operation.

1-7. Dispenser Light

1) Normal status of dispenser light is OFF.

2) When dispenser pad is pressed, dispenser light turns ON.

3) Dispenser light will turns OFF immediately after dispenser pad is released.

- 24 -

1-8. ULTRA ICE

1) The purpose of this function is to intensify the cooling speed of freezer and to increase the amount of ice.

2) Whenever selection switch is pressed, selection/ release, the icon will turn ON or OFF.

3) If there is a power outage and the refrigerator is powered on again, ULTRA ICE will be canceled.

4) To activate this function, press the ULTRA ICE key and the icon will turn ON. This function will remain activated for 24 hrs.

The first three hours the compressor and Freezer Fan will be ON. The next 21 hours the freezer will be controlled at the lowest
temperature. After 24 hours or if the ULTRA ICE key is pressed again, the freezer will return to its previous temperature.

5) During the first 3 hours:

(1) Compressor and freezer fan (HIGH RPM) run continuously.
(2) If a defrost cycle begins during the first 90 minutes of ULTRA ICE, the ULTRA ICE cycle will complete its cycle after
defrosting has ended. If the defrost cycle begins when ULTRA ICE has run for more than 90 minutes, ULTRA ICE will run for
two hours after the defrost is completed.
(3) If ULTRA ICE is pressed during defrost, ULTRA ICE icon is on but this function will start seven minutes after defrost is
completed and it shall operate for three hours
(4) If ULTRA ICE is selected within seven minutes after compressor has stopped, the compressor (compressor delays
seven minutes) shall start after the balance of the delay time.
(5) The fan motor in the freezer compartment runs at high speed during ULTRA ICE.
(6) For the rest of the 21 hours, the freezer will be controlled at the lowest temperature.

1-9. Control of variable type of freezing fan

1. To increase cooling speed and load response speed, MICOM variably controls he freezer fan motor at the high RPM

speed and standard RPM.

2.

MICOM only operates in the input of initial power, ULTRA ICE, Load response and Test mode 1 for the high RPM speed
and operates in the standard RPM in other general operation.

3. If the freezer door is opened while the fan motor is operating, the fan motor will continue to operate normally. (If the fan
motor is running at high speed, it will automatically be reduced to the standard speed). However, if the refrigerator door is
opened, the freezer fan motor will stop operating.

4. As for monitoring of BLDC fan motor error in the freezer, MICOM will immediately stop the fan motor by determining that the
BLDC fan motor is locked or failed if the fan motor position does not change for more than 115 seconds at the BLDC motor.
Then a failure code will be displayed (refer to failure diagnosis function table) on the refrigerator, for BLDC motor failure. If
you want to operate the BLDC motor, turn off and on at the power source.

1-10. Control of cooling fan motor

1. The cooling fan motor performs ON/OFF control by linking with the COMP.

2. It controls at the single RPM without varying RPM.

3. Failure sensing method is same as in the freezer fan motor (refer to failure diagnosis function table for failure

display).

1-11. Door opening alarm

1. The buzzer will sound if the freezer or refrigerator doors have been left open for longer than one minute.

2. The buzzer will ring three times every 30 seconds if the doors have been left open for longer than 1 minute.

3. Closing all refrigerators doors will stop the Buzzer alarm function.

3. If all the doors of freezing / cold storage room or Refrigerator Room are closed during door open alarm, alarm is immediately

released.

Freezer and refrigerator

door position.

Close

Open

Close

Open

Close

3 Times 3 Times 3 Times 3 Times

BUZZER

Within

a minute

- 25 -

A minute

30

seconds30seconds30seconds

1-12. Ringing of compulsory operation, compulsory frost removal buzzer

1. If pressing the test button in the main PCB,

2. In selecting compulsory operation, alarm sound is repeated and completed in the cycle of On for 0.2 second and Off for

1.8 second three times.

3. In selecting compulsory frost removal, alarm sound is repeated and completed in the cycle of On for 0.2 second , Off for

0.2 second, On for 0.2 second and Off for 1.4 second three times.

“Phi ~” sound rings.

1-13. Defrosting (Removing frost)

1. Defrosting starts each time the accumulated COMPRESSOR runnig time is between 7 and 50 hours. This time is
determinated by how often and how long the dorrs are opened.

2. For initial power on or for restoring power, defrosting starts when the compressor running tume reaches 4 hours.

3. Defrosting stops if the sensor tempreature reaches 41°F (5°C) or more. If the sensor doesn´t reach 41°F (5°C) in 1 hours, the
defrost mode is malfunctioning. (Refer to the defect diagnosis function, 8-1-15).

4. Defrosting won´t function if its sensor is defective (wires are cut or short circuited).

1-14. Refrigerator room lamp automatically off

• The refrigerator compartment lamp will turn on and off by refrigerator door switch.
If the refrigerator compartment lamp will turn off automatically if it has been on for longer than 7 minutes.

•

1-15. Sequential operation of built-in product

Built-in components such as the compressor, defrost removal heater, freezer compartment fan, Cooling Fan and step motor

damper are sequentially operated as follows to prevent noise and part damage from occurring during testing procedure.

Function Load Operation Remarks

If any occurs in
operation, initial
power on
sequence won’t
be performed.

When Defrost
Sensor is more
than 45°C

POWER

ON

0.3

sec.

COMP

ON

0.6

sec.

F-FAN

Hi-Speed

&

C-FAN

ON

0.3

sec.

DAMPER

OPEN

When Defrost
Sensor is lower

INITIAL POWER ON

than 45°C

POWER

ON

TEST SW

(PRESS

TEST MODE 1

Once)

In case of Defrost Sensor is below than 5°C

TEST MODE

TEST SW

TEST MODE 2

(PRESS

2 Times)

0.3

sec.

0.3

sec.

DEF HTR

ON

OTHER

LOADS

OFF

0.6

sec.

COMP

OFF

10

sec.

DEF HTR

F-FAN

&

C-FAN

OFF

OFF

0.6

sec.

0.3

sec.

0.3

sec.

- 26 -

15

sec.

F-FAN

Hi-Speed

C-FAN

COMP

ON

DEF

HEATER

ON

&

ON

0.3

sec.

0.6

sec.

sec.

0.3

sec.

0.3

F-FAN

Hi-Speed

&

C-FAN

ON

COMP

ON

DAMPER

OPEN

DAMPER

OPEN

0.3

sec.

DAMPER

OPEN

•

It is a load
movement
sequence in case
of F/R doors
closed.

If pressing S/W
once more in TEST
MODE 2 or defrost
sensor is more
than 5°C, it returns
from TEST MODE
to the INITIAL
POWER ON mode
(Compressor will
operates after 7
min).

1-16. Failure Diagnosis Function

To display the error message, press and hold ULTRA ICE button and FRZ TEMP button. If no errors are displayed, all LEDs
will be illuminated. If a primary or secondary error is present, certain LEDs will be illuminated indicating failure mode.

No.

1 No Error

ITEM

FAILURE CODE

INDICATOR

(F-Section)

ALL LED ON -

CONTENTS OF FAILURE

2 Abnormal Freezer Sensor

Abnormal Refrigerator

3 Standard RPM

Sensor (1)

Abnormal Refrigerator

4 SEE NOTE (1)

Sensor (2)

Abnormal Defrost Sensor

5 Standard RPM

Abnormal Room

6

Temperature Sensor

Abnormal Icemaker Sensor

7 SEE NOTE (1)

SEE NOTE (1)

8 Abnormal Defrost Standard RPM

9

Icemaker UNIT

Abnormal Freezing BLDC

10

Fan Motor

Abnormal Cooling BLDC

11

Fan Motor

SEE NOTE (1)

Cut o short circuit wire

Defrost heater defective, fuse
melting, short circuit, unplugged
connector (error indicated 80 min
later after trouble).

Faulty Icemkaer unit, Motor or Hall
IC; Lead wire short circuit;
Faultumotor driver.

Motor defect, hooked of lead wire to
fan, contact of structures with fan,
short or open of lead wire (there is no
signal of BLDC Motor for more than
115s in operation of fan motor).

PRODUCT OPERATION STATUS IN FAILURE

Compressor

15min ON /
15min OFF

Freezer

Fan

Standard RPM

Off (Re-check

after 30min)

Cooling

Fan

Off (Re-check

after 30min)

Defrost

Heater

No Defrost

STEP MOTOR

10 min
OPEN /

15min

CLOSE

Primary Error: F sensor, R1 sensor, D sensor, Defrost errors, F-FAN errors, C-FAN Error.
Secondary Error: R2 sensors, RT sensors, W / T sensors, I / M sensors, I / M Kit.

When an error occur the first 3 hours the Primary Error and Secondary Error is indicated in the display check mode (Pressing
FRZ TEMP and ULTRA ICE button at the same time more than one second). After the 3 hours and if the error is still present
the Primary Error will show in the display automatically (See Note 1) and the Secondary Error is indicated in the display check
mode.

Note1: In the Primary Error after 3 hours of the error occurs all display lights turn OFF except the Freezer Temperature
(Trouble Code Index) indicating the failure mode.

- 27 -

Failure Diagnosis Function

• Type A

D

A

B

ROOM TEMPERATURE SENSOR

ABNORMAL: SECTION TURNS OFF
NORMAL: SECTION TURNS ON

ICEMAKER SENSOR

ABNORMAL: SECTION TURNS OFF
NORMAL: SECTION TURNS ON

ICEMAKER UNIT FAILURE

ABNORMAL: SECTION TURNS OFF
NORMAL: SECTION TURNS ON

C

A

A

B

B

The other display
graphics Turn On

C

C

REFRIGERATOR SENSOR (2) [MIDDLE ROOM]

ABNORMAL: SECTION TURNS OFF
NORMAL: SECTION TURNS ON

D

D

- 28 -

Failure Diagnosis Function

• Type B

D

A

B

C

ROOM TEMPERATURE SENSOR

ABNORMAL: SECTION TURNS OFF
NORMAL: SECTION TURNS ON

ICEMAKER SENSOR

ABNORMAL: SECTION TURNS OFF
NORMAL: SECTION TURNS ON

ICEMAKER UNIT FAILURE

ABNORMAL: SECTION TURNS OFF
NORMAL: SECTION TURNS ON

REFRIGERATOR SENSOR (2) [MIDDLE ROOM]

ABNORMAL: SECTION TURNS OFF
NORMAL: SECTION TURNS ON

A

A

B

B

The other display
graphics Turn On

C

C

D

D

- 29 -

1-17. Test Function

1. The purpose of test function is to check function of the PWB and product and to search for the failure part at the failure

status.

2. Test button is placed on the main PCB of refrigerator (test switch), and the test mode will be finished after maximum 2

hours irrespective of test mode and then is reset to the normal status.

3. Function adjustment button is not perceived during performance of test mode.

4. In finishing test mode, always pull the power cord out and then plug-in it again for the normal state.

5. If non conforming contents such as sensor failure are found during performance of test mode, release the test mode and

display the failure code.

6. Even if pressing the test button during failure code display, test mode will not be performed.

MODE OPERATION CONTENTS REMARKS

1. COMP & C Fan ON

2. Freezer fan in high speed

3. Defrost Heater OFF

4. Stepping Motor OPEN

5. Display fully illuminated

1. COMP & C Fan OFF

2. Freezer fan OFF

3. Defrost Heater ON

4. Stepping Motor CLOSE

5. Only F & R notch are illuminated
(first four bars from bottom to top)

Compressor will turn ON after a 7min delay.

Under TEST 1, if the test circuit is shorted
continuously, stay to keep the TEST 1.

If Defrost Sensor is lower than +5°C, then
Defrost Heater turn ON. If Desfrost Sensor
reach greater than +5°C, then Defrost

Heater turn OFF.

TEST 1

TEST 2

NORMAL

OPERATION

Press once Test S/W

<Forced Freezing

Mode>

From Test 1 press

again TEST S/W

From Test 2 press

again TEST S/W

• Type A

• Type B

- 30 -

1-18. Function of dispenser and water dispenser built-in

1) While any door of refrigerator is open, Dispenser function can’t be used.

2) There is 1 dispenser pad, this can be used to dispense cubed ice, crushed ice and water.

3) Press button to illuminate your desired option to be dispensed. SELECT DISPENSER

LED turn on to indicate option selected

Control Type A

4) When pressing Dispenser Pad in cubed ice or crushed ice option, Duct motor is activated by 1 second to open the duct
door, it remains open mean while you keep pressed the pad, 5 seconds after pad release, duct motor becomes activated
inverting motor polarity, in order to close duct door. Dispenser Pad has direct communication to the Main PCB, Main PCB
read this signal as input to control Duct Motor and GEARED MOTOR. When Dispenser PAD is released, GEARED MOTOR
will stop immediately, after 5 seconds Duct Motor will be activated to close Duct Door.

5) When pressing Dispenser Pad in water option, water solenoid is activated allowing water dispensing. Dispenser Pad has
direct communication with the main PCB, Main PCB read this signal as input to control PILOT VALVE and WATER VALVE,
When Dispenser Pad is released, the PILOT VALVE and WATER VALVE is closed and water dispenser will stop.

6) While using any Dispensing function and any door is opened, dispensing operation will be stopped immediately.

7) If Dispensing pad exceeds 3 minutes, GEARED MOTOR, CUBE SOLENOID or WATER SOLENOID will turn OFF
automatically (this is a protection to avoid the overheating in the mentioned components), the duct motor will close Duct Door
after 5 seconds after this interruption.

8) Last dispensing option (CUBED ICE, CRUSHED ICE or WATER) is saved in the internal memory of Main PCB and
displayed by Display. Even after energy failure, Main PCB will display the last dispensing function used.

LED turn on to indicate option selected

Control Type B

- 31 -

6.EXPLANATION FOR MICOM CIRCUIT

1. EXPLANATION FOR PCB CIRCUIT

1-1. Power circuit

The power circuit includes a Switched Mode Power Supply (SMPS). It consists of a rectifier (BD1 and CE1) converting AC
to DC, a switch (IC2) switching the DC voltage, a transformer, and a feedback circuit (IC3 and IC4).

Caution : Since high voltage (160 Vdc) is maintained at the power terminal, wait at least 3 minutes after unplugging the

appliance to check the voltages to allow the current to dissipate.

Voltage of every part is as follows:

Parte VA1 CE1 CE2 CE3 CE4 CE5

Part VA1 CE1 CE2 CE3 CE4 CE5

Voltaje 110~127 V 160 Vdc 14 Vdc 12 Vdc 15.5 Vdc 5 Vdc

Voltage 110~127 Vac

160 Vdc 14 Vdc 12 Vdc 15.5 Vdc 5 Vdc

The part highlighted, are the
components of the Switched Mode
Power Supply

- 32 -

1-2. Oscillation circuit

The oscillation circuit generates a basic clock signal for synchronization and time calculation related to the transmission of
data and calculations made by the MICOM (IC1). The oscillator (OSC1) must always be replaced with an exact rated part,
because if this changes, the time calculations of the MICOM will be affected and it might not work at all.

CSTLS4M00G53-A0

0SCI

1-3. Reset circuit

The RESET circuit allows various parts of the MICOM, such as RAM, defrosting, etc., to be restarted from the initial state
when power is interrupted or restored. A LOW signal applied to the reset terminal for 10 ms causes the MICOM to reset
itself. During normal operation, the voltage at the reset terminal is 5 Vdc. If the reset fails, the MICOM will not operate.

CC8*
104

IC9

KIA7042

2

R83*

100

31

CE19

1uF/50V

+

R14*
IM

2

3

R15

4.7K

CC9*
104

XIN

XOUT

IC1

MICOM

8

RESET

MICOM

IC1

- 33 -

1-4. Load/dispenser operation, door opening circuit

1. Load Driving Circuit

LOAD

MEASURING

PART

STATUS

DEFROST

HEATER

CON 2

PIN 1

CON 2

PIN 5

AUGER MOTOR SOLENOID CUBE ICE VALVE

CON 3

PIN 9

CON 4

PIN 5

CON 2

PIN 9

CON 2

PIN 3

CON 3

PIN 5

CON 4

PIN 5

CON 1

PIN 7

REFRIGERATOR

LAMP

CON 1

PIN 1

CON 1

PIN 7

COMPRESSOR

+-+-+-+-+-+-+-

CON 1

PIN 3
115 ~ 127 VAC 115 ~ 127 VAC 115 ~ 127 VAC 115 ~ 127 VAC 115 ~ 127 VAC 115 ~ 127 VAC 115 ~ 127 VAC

ON

OFF

0 VAC 0 VAC

WATER VALVE

CON 3

PIN 3

CON 4

PIN 5

0 VAC0 VA C 0 VA C 0 VA C 0 VA C

PIN7

PIN5

PIN1

PIN9

PIN3

CON1 CON2 CON3 CON4

PIN7

PIN5

PIN3

PIN1

- 34 -

PIN11

PIN9

PIN7

PIN5

PIN3

PIN1

PIN5

PIN3

PIN1

- 35 -

2. Door opening sensing circuit

ICI

P11_DVO

45

CC15*

104

R35

2K

R36*

2K

CON 6

F-DOOR S/W

MICOM

P21_XTIN

CONNECTOR 6

F- DOOR S/W

2*RD

PIN 5&6

6

CC20*

104

R51

2K

R52*

2K

CON 7

R-DOOR S/W

CONNECTOR 7

R- DOOR S/W

BO, PK

PIN 3&4

Measuring Part

Door of Freezer / Refrigerator

Closing

Opening

• Since door switches (A) and (B) are interconnected, if either fails, the other will not respond properly.

• If either switch fails, the light will not come on.

IC1 (MICOM) PIN 39, 40

5 V ( A - B , C - D . Interruptor en ambos extremos están apagados

0 V ( A - B , C - D . Interruptor en ambos extremos están encendidos)

- 36 -

1-5. Temperature sensing circuit

A

B

C

D

E

F

A

B

C

D

E

F

COLORLOCATIONSENSORITEM

RTA

RTA

B

B
C

C
D

D
E

E
F

F

1-6. Switch entry circuit

The following circuits are sensing signal form the test switch, damper motor reed switch for testing and diagnosing the
refrigerator.

F

F
D

D

R1

R1
R2

R2
I/M

I/M

CON6 PIN1,2

CON6 PIN3,4
CON7 PIN5,6
CON7 PIN7,8
CON8 PIN1,2

2*WHCON5 PIN4,5

2*WH
2*BO
2*WH
2*GY

2*GY

IC1

MICOM

P67

63

- 37 -

CC10*

104

R84*

2K

R28*

4.7K
SW1

1-7. Stepping motor operation circuit

CONNECTOR 9

STEPPING MOTOR

PIN 9, 10, 11, 12

BL, BK, YL, RD

- 38 -

The motor is driven by magnetism formed in the areas of the coils and the stator. Rotation begins when a HIGH signal is
applied to MICOM Pin 16 of IC10 (TA7774P). This causes an output of HIGH and LOW signals on MICOM pins 14 and 15.

Explanation) The stepping motor is driven by sending signals of 3.33 mSEC via MICOM pins 14, 15, and 16, as shown in

the chart below. These signals are output via terminals 10, 11, 14, and 15 via input terminals 3, 6, and 8 of
IC10 (TA7774P), the motor drive chip. The output signals allow the coils wound on each phase of the stator to
form a magnetic field, which causes rotation. Input to the terminals INA and INB of IC10 as shown in the chart
below drives the motor.

CCW (Reverse rotation) (Positive rotation) CW

INA

INB

A

B

A

B

- 39 -

1-8. Fan motor driving circuit (freezer, mechanical area)

C

1. The circuit cuts all power to the fan drive IC, resulting in a standby mode.

2. This circuit changes the speed of the fan motor by varying the DC voltage between 7.5 Vdc and 16 Vdc.

3. This circuit stops the fan motor by cutting off power to the fan when it senses a lock-up condition.

4. The ground is connector 7, pin 2.

Between a c , d c Between b c Between e c

Motor OFF 5V 2V or less 2V or less

Motor ON 2~3V 12~14V 8~16V

b

a

e

d

c

b

d

a

ec

- 40 -

Temperature compensation table at the refrigerator is as follows:

Modification

resistance

Current
resistance

470

2 k

3.3 k

5.6 k

8.2 k

Refrigerator

(RCR1) 2.5 °C 2 °C 1.5 °C 1°C 0.5 °C No 0.5 °C 1 °C 1.5 °C 2 °C 2.5 °C

10 k [4.5 °F] [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F] [0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F] [4.5 °F]

470 2 k 3.3 k 5.6 k 8.2 k 10 k 12 k 18 k 33 k 56 k 180 k

No 0.5 °C 1 °C 1.5 °C 2 °C 2.5 °C 3 °C 3.5 °C 4 °C 4.5 °C 5°C

[0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F] [4.5 °F] [5.4 °F] [6.3 °F] [7.2 °F] [8.1 °F] [9 °F]

change

0.5 °C No 0.5 °C 1 °C 1.5 °C 2 °C 2.5 °C 3 °C 3.5 °C 4 °C 4.5 °C

[0.9 °F] [0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F] [4.5 °F] [5.4 °F] [6.3 °F] [7.2 °F] [8.1 °F]

Down change

1 °C 0.5 °C No 0.5 °C 1 °C 1.5 °C 2 °C 2.5 °C 3 °C 3.5 °C 4°C

[1.8 °F] [0.9 °F] [0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F] [4.5 °F] [5.4 °F] [6.3 °F] [7.2 °F]

Down

1.5 °C 1 °C 0.5 °C No 0.5 °C 1 °C 1.5 °C 2 °C 2.5 °C 3 °C 3.5 °C

[2.7 °F] [1.8 °F] [0.9 °F] [0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F] [4.5 °F] [5.4 °F] [6.3 °F]

Down Down Down

2 °C 1.5 °C 1 °C 0.5 °C No 0.5 °C 1 °C 1.5 °C 2 °C 2.5 °C 3°C

[3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F] [0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F] [4.5 °F] [5.4 °F]

Down Down Down

Down Down Down Down Down

Up Up Up Up Up Up Up Up Up Up

Up Up Up Up Up Up Up Up Up

Down

change

Up Up Up Up Up Up Up Up

change

Drop

Up Up Up Up Up Up Up

change

Up Up Up Up Up Up

change

Up Up Up Up Up

3 °C 2.5 °C 2 °C 1.5 °C 1 °C 0.5 °C No 0.5 °C 1 °C 1.5 °C 2°C

12 k [5.4 °F] [4.5 °F] [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F] [0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F]

Down Down Down Down Down Down

3.5 °C 3 °C 2.5 °C 2 °C 1.5 °C 1 °C 0.5 °C No 0.5 °C 1 °C 1.5 °C

18 k [6.3 °F] [5.4 °F] [4.5 °F] [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F] [0.9 °F] [1.8 °F] [2.7 °F]

Down Down Down Down Down Down Down

4 °C 3.5 °C 3 °C 2.5 °C 2 °C 1.5 °C 1 °C 0.5 °C No 0.5 °C 1°C

33 k [7.2 °F] [6.3 °F] [5.4 °F] [4.5 °F] [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F] [0.9 °F] [1.8 °F]

Down Down Down Down Down Down Down Down

4.5 °C 4 °C 3.5 °C 3 °C 2.5 °C 2 °C 1.5 °C 1 °C 0.5 °C No 0.5 °C

56 k [8.1 °F] [7.2 °F] [6.3 °F] [5.4 °F] [4.5 °F] [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F] [0.9 °F]

Down Down Down Down Down Down Down Down Down

5 °C 4.5 °C 4 °C 3.5 °C 3 °C 2.5 °C 2 °C 1.5 °C 1 °C 0.5 °C No

180 k

[9 °¡F] [8.1 °F] [7.2 °F] [6.3 °F] [5.4 °F] [4.5 °F] [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F]

Down Down Down Down Down Down Down Down Down Down

change

Up Up Up Up

change

Up Up Up

change

Up Up

change

Up

change

Temperature compensation at the freezer is performed the same as at the refrigerator. The value for the freezer is twice
that of the refrigerator.

This circuit enters the necessary level of temperature compensation for adjusting the appliance. The method is the same
for every model in this appliance family.

- 41 -

1) Sensor resistance characteristics table

Measuring Temperature (°C) Freezing Sensor

-20 °C 22.3 k 77 k

-15 °C 16.9 k 60 k

-15 °C 13.0 k 47.3 k

-5 °C 10.1 k 38.4 k

0 °C 7.8 k 30 k?

+5 °C 6.2 k 24.1 k

+10 °C 4.9 k 19.5 k

+15 °C 3.9 k 15.9 k

+20 °C 3.1 k 13 k?

+25 °C 2.5 k 11 k

+30 °C 2.0 k 8.9 k

+40 °C 1.4 k 6.2 k

+50 °C 0.8 k 4.3 k

Cold storage sensor 1&2

Frost removal sensor, Outside sensor

• Resistance value allowance of sensor is ±5%.

• When measuring the resistance value of the sensor, allow the temperature of that sensor to stabilize for at least 3 minutes
before measuring. This delay is necessary because of the sense speed relationship.

• Use a digital tester to measure the resistance. An analog tester has to great a margin of error.

• Resistance of the cold storage sensor 1 and 2 shall be measured with a digital tester

• Resistance of the freezing sensor shall be measured with a digital tester after separating CON7 of the PWB ASSEMBLY
and the MAIN part.

- 42 -

- 43 -

- 44 -

1.3A, 40mH

L2

CM2
220nF

275V

AC

VA1
SVC621-200V
(SVC331-100V)

FUSE1
250V/15A

N

R26*

A

B

10

12

CE4
1000uF
/35V

8

1K

D3
RL3

D4

RL3

7

5

3

1

9

7

5

3

1

11

9

7

5

3

1

5

3

1

2

68,1/2W

CM5

223/100V

+12V

+16V

BUZZER

100uF

R87

R8*

1.8K
1/8W

R9*

1K

CE3

1/8W

1000uF

CC37*

/25V

104

CC36*
104

1

CC4*
104

CON101

5V

TEST

TX

RX

GND

RY1

(OMIH-SS-112LM)

(OZ-SS-112L1)

RY2

RY14

G5NB-1A-E

G5NB-1A-E

RY3

(OMIH-SS-112LM)

RY4

(OZ-SS-112L1)

RY5

JP1

(OMIH-SS-112LM)

RY6

G5NB-1A-E

RY8

G5NB-1A-E

RY9

RY10G5NB-1A-E

RY12

G5SB-14

G3MC-201PL

IC15

OPTION

R10(PRC)
56K/2W

D10

D11
IN4148

IN4007

CSTS4.00MG03

1

CC8*
104

SW 2

2

1

8

Vcc

7

NO
CC30*
104

6

NO

5

GND

R77*
220

CE16
47uF

/25V

CE20

+

7

8

+

/25V

10

IC16

BA6222

2

1

7805

Q7

IC5

1

2

KIA7042

A106M

2

PS2561-1

IC9

2

IC12*

Q6

C106M

5
6

4
3
9

IC3

PS2561-1

R82*

10K

IC4
KIA431

3

CC5*
104

R99*

4.7K

104
CC36*

R100*

4.7K

D5
IN4004

D6
IN4004

D7
IN4004

D8
IN4004

D9
IN4004

D16
IN4004

IC8

4

3

R83*

3

100

R24*

4.7K

R73*

4.7K

1

CS
SK

2

DI

3

BR93LC46RF-W

DO

4

Forward
Reverse

CC35*
223

R103

R101*

16

15

14

13

12

11

10

15

14

13

11

H

OSC1

R86*

4.7K

CC34*
223

CC3*

104

+5V

9

R12
10K

4.7K

/16V

150

R102

IC6*
KID65003AF

9

+

R25*

4.7K

R74*

RF2*

9.1KF

RF3*

2.4KF

CE5
220uF

4.7K

150

150

8

IC7*
KID65003AF

8

R11*
100

R15*

4.7K

CE19
1uF
/50V

C106MQ12

R78

4.7K

R98*

2

2

3

223

R75*

4.7K

4.7K

CC33*
223

1

3

4

5

6

7

4

6

CC7*

R85*

5

VDD

18

VAREF

19

AVDD

CC6*
104

1

VSS

4

TEST

12

P02_TXD1

11

P01_RXD1_BOOT

38

P42_TXD2

37

P41_RXD2

36

P40

35

P77_AIN15

34

P76_AIN14

33

P75_AIN13

32

P74_AIN12

31

P73_AIN11

30

P72_AIN10

29

P71_AIN9

2

XIN

R14*
1M

XOUT

3

8

RESET
CC9*
104

27

P67_AIN07_STOP3

28

P70_AIN8

R76*

4.7K
P44_SI2

40

P45_SO2

41

P46_SCK2

42

P47

43

P14_TC4_PDO4_PWM4_PPG4

48

47

P13_TC3_PDO3_PWM3

63

P36

64

P37

P60_AIN00

TMP86FS49BFG(IC1)

D1
FR107

CE2
22uF

D2
FR107

Rocp

0.68,1W

CM3
473
/630V

68,1/4W

TRANS
2013D

1

2

R5

5

4

CC2

221/250V

BD1

D3SBA60

R2(PRC)
560K
1/2W

R1(PRC)
330K,1W

FUSE2

250V/5A

L1
7A, 2mH

CM1
330nF

275V

AC

JF1

JF2

CON201

L

4

IC2

STR

G6351

R3(PRC)
56K,2W

CE1
68uF
/450V

FB1

BFS3510A0

R4

6.8K
/50V

1/4W

4

1

3

2

R6

5

680,1/4W

CC1*
471

3

CON1

RUNNING CAPACITOR

COMP

STRATING CAPACITOR

R-DOOR S/W

C

P.T.C ASSY

D

OLP

R-LAMP

R-LAMP

CON2

SOLENOID CUBE

DISP' HEATER

OPTION

A

F-LAMP

FUSE-MELTING

B

F-DOOR
SWITCH

DISPENSER
LEVER S/W

DEF-HEATER

AUGER MOTOR

WATER

SOLENOID

FUSE-M1

M

ICE

PILOT

VALVE

H/BAR-HEATER

OPTION 2

CON3

CON4

Table 1. WATER SUPPLYING TIME CONTROL(S/W 2)

SWITCH
LOCATION(FIG.1)
S/W1

S/W2

OFF

OFF

ON

OFF

OFF

ON
ON

ON

WORK

6.5 s

5.5 s

7.5 s

8.5 s

SWITCH ON

ON

1

SWITCH OFF

- FIG.1 -

- 45 -

39

P43

CC10*
223

R92

4.7K

57

P30

58

P31

59

P32

60

P33

61

P34

62

P35

R90

4.7K

52

P50_SCL

R91

4.7K

53

P51_SDA

R19

54

4.7K

P52

R20

4.7K

55

P53

R21*
2K

56

P54

26

P66_AIN06_STOP2

(OPTION2)

25

P65_AIN05_STOP1

TMP86FS49BFG(IC1)

P16_TC5_PDO5_PWM5

P17_TC6_PDO6_PWM6_PPG6

P64_AIN04_STOP0

P20_INT5_STOP

P07_INT2

P60_AIN00

P61_AIN01

P11_DVO

P15_TC2_INT3

P03_INT1

P21_XTIN

P63_AIN03

P06_SCK1

P05_SO1

P04_SI1

P62_AIN02

P00_INT0_A3

P10_TC1

P22_XTOUT

P12_PPG

CC32*
223

17

20

21

45

R37*

4.7K

50

49

CC17*
103

R44*

4.7K

51

13

CC19*

103

6

CC20*
104

24

23

CC22*
223

R55*
10K

16

15
14

22

CC23*

223

10

CC24*
223

9

CC25*
223

44

CC26*
223

R65*

7

4.7K

46

CC27*
223

CC14*

CC15*

CC21*
223

CC13*
223

223

104

3.9K

R45*

3.9K

R93

4.7K

C106M

R38*

R39*
10K

R28*

4.7K

R84

2K

SW1

IC13*

R97*

R96*

R95*

R94*

4.7K

4.7K

5

4

3

2

11

CC12*
223

Q10

R40*

KTB1151

330

R41

1.5K
1/2W

Q3

KTC3198

Q4

R47*

KTB1151

330

R48

1.5K
1/2W

Q5
KTC3198

R46*
10K

R57*

R56*

10K

10K

R66*

Forward

4.7K

Reverse

CC28*
223

CC29*
223

M54563FP

10

4.7K

4.7K

2

19

18

3

17

4

16

5

6

15

14

7

11

IC14*

KID65003AF

9

12

13

14

15

8

6

R22

2K

IC14-1*

R32

2K

R72

2K

R81*

330

R80*

Q11

2K

KTA1273

RF1*

16.2KF
(R)J1

R33

(R)J2

2K

RD1*

26.1KF

R34

2K

R36*

R35

2K

2K

Q2

D12

L3

FR107

1mH

CE9

D13

220uF

FR107

/25V

R42
10K

D14
FR107

L4

1mH

CE10

D15

220uF
/25V

FR107

R49

10K

R51
2K

RR1*

26.1KF
R_J4

R_J3

R53

2K

RR2*

R54

26.1KF

2K

IC10

9,16

TA7774P

15

+

CE13

1,2

1uF

/50V

14

ST/OP

8

11

B

6

4,5,7,

10

A

3

12,13

RIM1*

16.2KF

R58*

2K

R59

R60

2K

2K

R61

R62

4.7K

2K

R64*
2K

R63

2K

7

+

8

5

10

6

IC11

4

BA6222

2

3

1

9

180,1/2W

180,1/2W

120,1/2W

240,1/2W

CC31*

102

RT1*

10KF

RW1*

26.1KF

R43

4.7K

R50

4.7K

R52*
2K

CE15
100uF
/25V

R88

R29

R30

R31

CE11
10uF
/50V

CE12
10uF
/50V

10uF
/50V

R23*

100

CE6
10uF

/50V

CE18
10uF
/50V

CE7

10uF

/50V

CE8

10uF

/50V

CC16*

223

CC18*

223

CE14

R67
68,1/2W

CM4
223/100V

CON9

7

B

A

CON5

6

5

4

3

2

1

11

10

9

8

7

6

4

5

2

3

1

12

13
14

1
2
3
4
5
6

7

8

9

12

11

10

1

2

3

4

5
6
7

8

9

10

11

12
13

1

2

3

4

5

6

7

8

9

10

10

CON101

CON6

1

1

CON7

A

A
B
B

CON8

3

DUCT DOOR

M

MOTOR

11

9

8
7
6

5

4

3

2

1

(ÉÙ KEY)

RT-SENSOR

WT-SENSOR

F-SENSOR

D-SENSOR

A

F-DOOR S/W

B

3

4

C-FAN

2

4

3

F-FAN

2

DAMPER,HEATER

H/BAR-DOOR S/W

C

D

R-DOOR S/W

R1-SENSOR

R2-SENSOR

STEPPING
MOTOR

ICE MAKER SENSOR

ICE MAKER
STOP S/W

ICE MAKER
TEST S/W

2

1

HALL

IC

ICE MAKER

M

MOTOR

D101

D102

SW102

SW101

(É¥ KEY)

(ICE PLUSE KEY)

DISPENSER LED

D103

SW103

(FILTER KEY)

D105

D104

SW104

SW105

(DISPENSER KEY)

D106

SW106

(LOCK KEY)

D112

D111

D110

D109

D108

D107

(ÉÙ 2)

(ÉÙ 3)

(ÉÙ 5)

(ÉÙ 6)

LD103

LD104

(É¥ 2)

LD115

LD116

(É¥ 7)
LD127

LD128

(CUBE FIG.)

(É¥ OFF)

LD139

LD133

LD105

LD106

(É¥ 3)

LD117

LD118

(CUBE 8l)

LD129

LD132

120

(LOCK KEY)

LD140

(ÉÙ 4)
LD107

LD108

(É¥ 4)

LD120

(WATER 8l)

(WATER FIG.)

LD135

R102

(FILTER KEY)
LD141

LD119

R103
120

LD109

LD110

(É¥ 5)
LD121

LD122

(CRUSH 8l)

LD130

LD134

R104

120

LD142

(ICE/PLUS KEY)

LD111

LD112

(É¥ 6)
LD123

LD124

LD131

LD136

(CRUSH FIG.)

LD137

(ÉÙ 1)

LD101

LD102

(É¥ 1)

LD113

LD114

(ÉÙ 7)
LD125
LD126

60

R101

(ÉÙ OFF)
LD138

- 46 -

7. ICEMAKER AND DISPENSER OPERATION AND REPAIRING

1. ICE MAKER OPERATION

1-1. Ice Maker operation

1-2. Dispenser Operation

1. The function is available in models where water and ice are available
without opening freezer compartment door.

→

→

- 47 -

2. FUNCTION OF ICE MAKER

2-1. Initial Control Function

Pin No. 44.

2-2. Water Supply Control Function

No Water Supply Time Note

DISP S/W

S1 S2

1 OFF OFF

2 ON OFF

3 OFF ON

4ON ON

2-3. Icemaking Control Function

9.0

8.0

10.0

11.0

DIP S/W Setting will be depend of

water pressure

- 48 -

2-4. Ice Ejection Control Function

full, ice ejection motor rotates in reverse direction and stops under icemaking or waiting conditions.

º

- 49 -

2-5. Test Function

2-6. Other functions relating to freezer compartment door opening

- 50 -

3. ICEMAKER TROUBLESHOOTING

It is possible to confirm by pressing freezer and refrigerator temperature control buttons for more than 1
second (icemaker is normal if all LEDs are ON): refer to trouble diagnosis function in MICOM (page 27).

8.

(Pin No. 22 of IC1)

8

•

•

44

•

•

8

•

1

9

•

8

•

•

•

- 51 -

4. ICEMAKER CIRCUIT

Forward

Reverse

CC29*
223

R58*

2K

R60

2K

R62

2K

R63

2K

5

6

4

3
9

IC11

BA6222

SW 2

7

8

2

1

P10_TC1

22

CC23*

223

10

CC24*
223

9

CC25*
223

44

CC26*

223

R66*

R65*

7

46

27

28

4.7K

CC27*
223

R25*

4.7K

4.7K

CC28*
223

R24*

4.7K

P62_AIN02

P00_INT0_A3

P20_INT5_STOP

P22_XTOUT

P12_PPG

IC1 MICOM

P67_AIN07_STOP3

P70_AIN8

10

2

1

RIM1*

16.2KF

R59
2K

R61

4.7K

R64*
2K

+

CE15

100uF
/25V

CE14
10uF
/50V

R67
68,1/2W

CM4
223/100V

CON8

1

2

3

4

5

6

7

8

9

10

3

2

HALL

IC

M

ICE MAKER
SENSOR

ICE MAKER

STOP S/W

ICE MAKER

TEST S/W

1

ICE MAKER

MOTOR

The above icemaker circuits are applied to 795.5101** 795.5102** and composed of icemaker unit in the freezer and
icemaker driving part of main PWB. Water is supplied to the icemaker cube mold through the solenoid relay for ice
valve of solenoid valve in the mechanical area by opening valve for the same time.
Water supply automatically stops when water supply time is elapsed. This circuit is to realize the functions such as ice
ejection of icemaker cube mold, ice full detection, leveling, ice making test switch input detection is the same as the
door switch input detection circuit of main PWB.

- 52 -

→→

→

→

→

→

8. CIRCUIT DIAGRAM

CIRCUIT DIAGRAM

I/M MOTOR

I/M TEST S/W

ICE MAKER

S/W

STOP S/W

PAR T

ICE MAKER UNIT

I/M SENSOR

R2-SENSOR

R1-SENSOR

DAMPER-HTR

DUCT MOTOR

SB
YL

BK

RD/
WH

BL

WH

WH/

BK

BO
BN
RD 1

PWB ASSEMBLY, DISPLAY

CON101

RT-SENSOR

DISPENSER

PLUG TYPE

11

10

9
8

7

6PR
5
4
3
2

PIPE-HTR

LED

M

HALL

STEPPING

MOTOR

a

b

IC

M

RD
WH

9

YL

8

BL

7

BK

6

BN

5

BO

4

BO

3

GY

2
110GY

CON8

13

RD

1112YL
10

BK

9

BL

8

GY

7

GY

6

WH

5

WH

4

BO

3

PK

2

PR

1

BN

CON7

BN 7
RD 6

SB 5
YL 4 6

BK 3

RD/

2

WH

BL 1

CON9

11

PR

10

WH

WH/

9

BK

BO

8
7

BN

6

RD

5

WH
WH

4
3
2

1PK

14

YL

BL/

13

WH

RD/

12

WH

CON5

1YL

BL

2

CON201

BL

12

PR

11

YL

10

SB

9

BN

8

GY

7

RD

6

RD

5

BO

4
3

BO

2

WH

1

WH

CON6

9

GY
8
7
6
5

BN
4
3BL
2
1PR

CON2

11 Y L

10

9

SB
8
7

5

RD
4
3

BN
2
1

PK

CON3

BL5
4
3
2
1WH

CON4

7BL
6
5

BL
4

BK

3
2
1

PR
CON1

F-FAN

C-FAN

SOLENOID CUBE

FUSE-M

F-DOOR S/W

c

AUGER MOTOR

WATER VALVE

PILOT VALVE

R-LAMPS

c

d

D-SENSOR

F-SENSOR

SHEATH-HTR

FUSE-M

FUSE-M

d

M

ICE VALVE

LQ COMP’

3

6

1

52

F-LAMP

a

R-DOOR S/W

* P.T.C OPTION

LD COMP’ EG COMP’

2

5

6

* PLUG TYPE, CAPACITOR PART, P.T.C, FUSE-M

AND COMP' ACCESSORIES ON CIRCUIT DIAGRAM ARE

SUBJECT TO CHANGE IN DIFFERENT LOCALITIES

AND MODEL TYPE.

b

3

6

4

5

3

COMP'

OLP

C

M

* COMP' ACCESSORIES

BL

2

CAPACITOR

3
6

S

5

COMP' ACCESSORIES

CR

N

PTC

PAR T

1

2

P. T. C

CR

CS

BK

L

OLP

COMBO KIT
(PTC+OLP)

BK: BLACK
YL: YELLOW
SB: SKY BLUE
BN: BROWN

GN: GREEN
PK: PINK
BO: BRIGHT ORANGE
PR: PURPLE

- 53 -

GY: GRAY
WH: WHITE
BL: BLUE
RD: RED

GN/YL: GREEN/YELLOW
BL/WH: BLUE/WHITE
BK/WH: BLACK/WHITE
WH/RD: WHITE/RED

9. TROUBLE DIAGNOSIS

1. TroubleShooting

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

1. Faulty start

1) No power at outlet.

2) No power on cord.
Bad connection between adapter and outlet. (faulty adapter)

The Inner diameter of adapter.
The distance between holes.
The distance between terminals.
The thickness of terminal.

Bad connection between plug and adapter (faulty plug).

The distance between pins.
Pin outer diameter.

3) Shorted start circuit.

No power on
power cord.

Disconnected copper wire.

Internal electrical short.
Faulty terminal contact.

Disconnected.

Weak connection.
Short inserted cord length.
Worn out tool blade.

Power cord is disconnected.
Faulty soldering.

Loose contact.

- Large distance between
male terminal.

- Thin female terminal.

Terminal disconnected.
Bad sleeve assembly.

* Measuring instrument:

Multi tester

Check the voltage.
If the voltage is within ±85%
of the rated voltage, it is OK.

Check the terminal

movement.

Check both terminals of
power cord.
Power conducts:OK.
No power conducts:NG

OLP is off.

No electric power on compressor. - Faulty compressor.

Faulty PTC

4) During defrost.

Specification of OLP is wrong.
Defect in OLP.
Bad connection.

Power is
disconnected.

Power does not conduct. - Damage.
Characteristics of PTC is wrong.
Bad connection with

compressor.
Bad terminal connection.

Start automatic defrost.
Cycle was set at defrost when the refrigerator

was produced.

Inner Ni-Cr wire blows out.
Bad internal connection.
Faulty terminal caulking (Cu wire is cut).
Bad soldering.

Too loose.
Assembly is not possible.

Check rating of OLP

OLP: 4TM419TFBYY

Temp. 120°C
If rating different: change it
If not: OK

Check the resistance of both

terminals.
Take the combo off and

install it again.

- 54 -

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

2. No cooling.

2) Refrigeration system is clogged.
Moisture

clogged.

No electric
power on
thermo­stat.

Weld joint
clogged.

Drier clogging.

Residual moisture

in the evaporator.

Residual moisture.

Insufficient drier
capacity.

Residual moisture
in pipes.

Moisture penetration - Leave it in the air. - Moisture penetration.
into the refrigeration oil.

Short pipe insert.
Pipe gaps.

Too much solder.

Too large.
Damaged pipes.

The capillary tube inserted depth. - Too much.
Capillary tube melts. - Over heat.
Clogged with foreign materials.

Reduced cross section by cutting. - Squeezed.

• Heat a clogged evaporator to

Air Blowing.

Leave it in the air.

Caps are missed.

Not dried in the compressor.
Elapsed more than 6 months after drying
Caps are missed.
No pressure when it is open.

Dry drier - Drier temperature.
Leave it in the air.

Caps are missed.

Air blowing.

Not performed.
Too short.
Impossible moisture

confirmation.
Low air pressure.

During rest time.
After work.

Check on package
condition.

Good storage after
finishing.

During transportation.
During work.

Not performed.
Performed.

Too short time.
Low air pressure.
Less dry air.

• The evaporator does not cool

Desiccant powder.
Weld oxides.
Drier angle.

check it. As soon as the
cracking sound starts, the
evaporator will begin to
freeze.

from the beginning
(no evidence of moisture
attached).
The evaporator is the same
as before even heat is
applied.

Foreign material clogging.

Compressor cap is disconnected.
Foreign materials are in the pipe.

- 55 -

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

3. Refrigeration
is weak.

1) Refrigerant Partly leaked.

2) Poor defrosting capacity.
Drain path (pipe) clogged.

Defrost heater does not
generate heat.

Weld joint leak.
Parts leak.

Inject adiabatics into drain
hose.

Foreign materials
penetration.

Adiabatics lump input.
Damage by a screw or

clamp.
Other foreign materials input.

Cap drain is not disconnected.

Parts
disconnected.

Plate
heater

Cord
heater

Inject through the
hole.

Seal with drain.

Wire is cut.

- Heating wire.

- Contact point
between heating
and electric wire.

Dent by fin evaporator.
Poor terminal contacts.

Wire is cut.

- Lead wire.

- Heating wire.

- Contact point
between heating and
electric wire.

Heating wire is corroded

- Water penetration.

Bad terminal connection.

• Check visually.

• Check terminal

Conduction: OK.
No conduction: NG.
If wire is not cut, refer to
resistance.
P=Power
V=Voltage
R=Resistance

2

V

P=

R

2

V

R=

P

- 56 -

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

3. Refrigeration
is weak.

Residual
frost.

No automatic defrosting.

Defrost does not return.

Weak heat from heater.

Too short defrosting time. Defrost Sensor.

Structural fault. Gasket gap.

Sheath Heater - rated.

Heater plate

Heater cord-L

- Faulty characteristics.
Seat-D (missing, location. thickness).

Air inflow through the fan motor.
Bad insulation of case door.

No contact to drain.
Loosened stopper cord.

Not touching the
evaporator pipe.

Location of assembly
(top and middle).

3) Cooling air leak.
Bad gasket adhestion

Door sag.

4) No cooling air circulation.

Faulty fan motor.

Bad adhesion.
Weak binding force at hinge.

Gap.
Bad attachment.
Contraction.

Fan motor.

Door switch.

Self locked.
Wire is cut.
Bad terminal contact.

Faults.

Refrigerator and freezer switch reversed.
Button is not pressed.

Contact distance.
Button pressure.
Melted contact.
Contact.

Poor door
attachment.
Door liner
(dimension).
Contraction inner
liner.
Misalignment.
Bad terminal
connection.
Adiabatics liquid
leak.

• Check the fan motor
conduction: OK.
No conduction: NG.

- 57 -

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

3. Refrigeration
is weak.

4) No cooling air circulation.
Faulty fan motor.

Small cooling air
discharge.

5) Compressor capacity.

Fan is
constrained.

Insufficient
motor RPM

Faulty fan.

Shorud. Bent.
Ice and foreign materials on rotating parts.

Fan shroud contact. - Clearance.
Damping evaporator contact.
Accumulated residual frost.

Fan overload. - Fan misuse.
Bad low termperature RPM characteristics.
Rated power misuse.
Low voltage.

Fan misuse.
Bad shape.
Loose connection. - Not tightly connected.
Insert depth.

Rating misuse.
Small capacity.
Low valtage.

6) Refrigerant

too much or too little.

7) Continuous operation

- No contact of temperature controller. - Foreign materials.

8) Damper opens continuously.

Foreign materials
jammed.

Failed sensor. - Position of sensor.
Characteristics

of damper.

9) Food storing place. - Near the outlet of cooling air.

Malfunction of charging cylinder.
Wrong setting of refrigerant.
Insufficient compressor. - Faulty compressor.

Adiabatics liquid dump.
The EPS (styrofoam) drip tray has sediment in it.
A screw or other foreign material has fallen into the drip
tray or damper.

Bad characteristics of its own temperatue.
Parts misuse.
Charge of temperature - Impact.

characteristics.

• Check visually after
disassembly.

• Check visually after
disassembly.

- 58 -

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

4. Warm
refrigerator
compartment
temperature.

5. No automatic
operation.
(faulty

contacts)

1) Colgged cooling path.
Adiabatics liquid leak.

Foreign materials. –– Adiabatics dump liquid.

2) Food storate.

1) Faulty temperature sensor in freezer or refrigerator compartment.
Faulty contact.

Faulty temperature characteristics.

2) Refrigeration load is too much.

3) Poor insulation.

4) Bad radiation.

5) Refrigerant leak.

6) Inadequate of refrigerant.

7) Weak compressor discharging power.

8) Fan does not work.

9) Button is set at strong .

Store hot food.
Store too much at once.
Door open.
Packages block air flow.

Food.

Frequent opening and closing.
Cool air leak.
Poor door close. – Partly opens.

High ambient temperature.
Space is secluded.

Too much food.
Hot food.

Different rating.
Small capacity.

• Inspect parts measurements
and check visually.

6. Condensation
and ice
formation.

1) Ice in freeezer compartment.
External air inflow. ––Bushing installed incorrectly.

Door opens
but not closes.

Gap around gasket. –– Contraction, distortion, loose, door twisted, corner not

Food vapor. –– Storing hot food. –– Unsealed food.

2) Condensation in the refrigerator compartment.
Door opens
but not closes.

Gasket gap.

3) Condensation on liner foam.
Cool air leak

and transmitted.

Weak door closing power.
Stopper malfunction.
Door sag.
Food hinders door closing.

fully inserted.

Insufficient closing.
Door sag.
Food hinders door closing.

Not fully filled.

Flange gap. –– Not sealed.
Gasket gap.

Top table part.
Out plate Ref/Lower part.

- 59 -

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

6. Condensation
and ice
formation.

4) Condensation on door.
Condensation on the duct door. - Duct door heater is cut.
Condensation on the

dispense recess.

Condensation on the Not fully filled. Surface.
door surface. Cormer.

Condensation
on the gasket
surface.

5) Water on the floor.
Condensation in the refrigerator compartment.
Defrosted water overflows. Clogged discharging hose.
Discharging hose Evaporation tray located at wrong place.
location.
Tray drip. Damaged.

Position of drain.

Recess Heater is cut.
Duct door is open. / Foreign material clogging.

Adiabatics liquid contraction.

Bad wing adhesion. Wing sag(lower part).

Door liner shape mismatch.

Corner. Too much notch.

Broken.

Home Bar heater is cut.

Breaks, holes.
Small Capacity.

Liquid shortage.
Liquid leak.

7. Sounds

1) Compressor compartment operating sounds.
Compressor sound Sound from machine itself.

inserted. Sound from vibration.

Restrainer.
Bushing Too hard.
seat. Distorted.

Aged.
Burnt.

Stopper. Bad Stopper Not fit

assembly. (inner

diameter

of stopper).
Tilted.
Not

Compressor base not connected.
Bad welding compressor stand(fallen).
Foreign materials in the compressor

compartment.

COMBO sound Chattering

Insulation paper vibration.
Capacitor noise.
Pipe sound. No vibration damper. Damping Bushing-Q.

Pipe contacts each other. .- Narrow interval.

Capillary tube unattached.

sound.

Damping Bushing-S.

- 60 -

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

7. Sounds

1) Compressor compartment operating sounds.
Transformer

Drip tray vibration sound.

Back cover machine sound.

Condenser drain sound.

2) Freezer compartment sounds.
Fan motor sound.

Sounds from fan
contact.

Unbalance fan sounds.

sound.

Its own fault. - Core gap.
Bad connection. - Correct screw connection.

Bad assembly.
Distortion.
Foreign materials inside.

Bad connection.
Partly damaged.

Not connected.
Bad pipe caulking.

Normal operating sound.
Vibration sound.

Fan guide contact.
Shroud burr contact.
Damping evaporator contact.
Residual frost contact.

Unbalance.

Aged rubber seat.
Bad torque for assembling motor
bracket.

Damaged heater cord.
Narrow evaporator interval.

Surface machining conditions.
Fan distortion.
Misshappen.
Burr.

Ice on the fan. - Air intake (opposite to motor

bushing assembly.)

Motor shaft
contact sounds.

Resonance.
Evaporator noise.

3) Bowls and bottles make contact on top shelf.

4) Refrigerator roof contact.

5) Refrigerator side contact.

6) Insufficient lubricants on door hinge.

Supporter disorted.
Tilted during motor assembly.

Evaporator pipe contact. - No damping evaporator.
Sound from refrigerant. - Stainless steel pipe shape in

Sound from fin evaporator and pipe during expansion
and contraction.

accumulator.

- 61 -

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

8. Faulty lamp
(freezer and

refrigerator
compartment).

9. Faulty internal
voltage (short).

1) Lamp problem. Filament blows out.
Glass is broken.

2) Bad lamp assembly. Not inserted.
Loosened by vibration.

3) Bad lamp socket.

Disconnection. Bad soldering.

Bad rivet contact.

Short. Water penetration. Low water

level in tray.

Bad elasticity of contact.
Bad contact(corrosion).

4) Door switch. Defective.

Refrigerator and freezer switches are reversed.
Travlel distance.
Bad connection.
Bad terminal contact.
Adiabatics liquid leak..

1) Lead wire is damaged.

Wire damage when assembling Bracket Cover.
Outlet burr in the bottom plate.
Pressed by cord heater. lead wire, evaporator pipe.

2) Exposed terminal.

Compressor Compartment terminal. - Touching other

components.

Freezer compartment terminal. - Touching evaporator pipe.

3) Faulty parts.

Transformer. Coil contacts cover.

Welded terminal parts contact cover.
Compressor. Bad coil insulation.
Plate heater.
Melting fuse. Sealing is broken. Moisture penetration.
Cord heater. Pipe damaged. Moisture penetration.

Bad sealing.
Sheath heater.

• Connect conduction and
non-conduction parts and
check with tester.
Conduction: NG.
Resistance

: OK.

- 62 -

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

10. Structure,
appearance,
and others.

1) Door foam.
Sag.

Hinge loose

Weak gasket
adhesion.
Fixed tape.

Bolt is loosened during
transportation.
Not tightly fastened.
Screw worn out .
Adhesion surface.

Not well fixed.

Noise during
operation.

Malfunction.

2) Odor.
Temperature of

refrigerator
compartment.

Deodorizer.

Food Storage.

Others.

Hinge interference.

Not closed Interference between door liner and inner liner.
Refrigerator
compartment is
opened when freezer
compartment is
closed (faulty stopper).

High. Faulty damper control.

No deodorizer.
Poor capacity.

Seal condition.
Storage of fragrant foods.
Long term storage.

Odors from cleaners or items which shroud not
be stored in a refrigerator.

Bigger door foam.
Hinge-Pin tilted-Poor flatness.
No washer.
No grease.

Stopper worn out.
Bad freezer compartment door
assembly.
No stopper.

Button is set at weak.
Door is open (interference by
food).

- 63 -

•

Problems Causes Checks Measures Remarks

2. FAULTS

2-1. POWER

Problems Causes Checks Measures Remarks

2-2. Compressor

- 64 -

attach sheets.

cleaner from the coils condenser

while the refrigerator is off.

2-3. TEMPERATURE

Problems Causes Checks Measures Remarks

High Poor cool air circulation due to faulty - Lock –– Check resistance with a - Replace fan motor.

: cut. - Reconnect and reinsert.

: short.

rotation.

- Rotate rotor manually and check

compartment.

temperature fan motor. tester.

in the freezer 0

visually.

- Fan icing:

Confirm visually.

contact: Confirm deformation).

Fan shroud is constrained by shroud

-

terminal visually. (Repair and/or replace shroud if fan

- Wire is cut.

- Bad terminal contact: Check - Maintain clearance and remove ice

- Fan constraint.

Press button to check operation.

- Faulty button pressure and contact:

Faulty fan motor due to faulty door - Iced button (faulty) operation: - Confirm icing causes and repair.

switch operation. Press button to check - Replace door switch.

button: Check visually. - Door liner bent:replace door or

- Door cannot press door switch - Door sag: fix door.

minimum). 50mm). performs while the

- Check dust on the grill in - Remove dust and contaminants refrigerator is on.

Bad radiation conditions in - Check the clearance between the - Keep clearance between - The fan may be

compressor compartment. refrigerator and wall (50 mm in refrigerator and walls (minimum broken if cleaning

compressor compartment. from grill for easy heat radiation.

- Check dust on the condenser coils. - Remove the dust with vacuum

- 65 -

Problems Causes Checks Measures Remarks

2-4. COOLING

- 66 -

Problems Causes Checks Measures Remarks

- 67 -

Problems Causes Checks Measures Remarks

- 68 -

Ù

?

Problems Causes Checks Measures Remarks

2-5. DEFROSTING FAILURE

Ù

∞

Ù

Ù

∞

Ù

- 69 -

Ù

Ù

∞

Problems Causes Checks Measures Remarks

- 70 -

Problems Causes Checks Measures Remarks

2-6. ICING

- 71 -

Problems Causes Checks Measures Remarks

- 72 -

Problems Causes Checks Measures Remarks

2-7. SOUND

- 73 -

Problems Causes Checks Measures Remarks

- 74 -

´s

Problems Causes Checks Measures Remarks

- 75 -

Problems Causes Checks Measures Remarks

2-8. ODOR

- 76 -

2-9. MICOM

1. PCB Picture – Main PCB

EBR64585301

(2010.01~)

CON 201

CON 1CON 2CON 3CON 4

CON 9CON 5CON 6

CON 8CON 7

- 77 -

1. PCB Picture - Display PCB & Sub PCB

Display PCB
EBR615268

CON 101

EBR61526803

CON 101

EBR61526804

- 78 -

2. Troubleshooting With Error Display

1) Abnormal Freezer Sensor Error

NO.

1

2

CHECKING FLOW RESULT & SERVICE ACTION

Check for a loose connection in CON6

Unplug connector and check between
White to White as is shown in the picture.

Result

Firmly plugged

Loose

Result

0 Ù

OFF

Other

Temperatures when unit is energized
(Refer to Temperature Chart #1)

Short

Open

Normal

Service Action

Go to Step 2

Service Action

Go to Step 3

Go to Step 4

Check the Temperature
and Resistance
(Temperature Chart #1)
Go to Step 6

1) Remove the Cover Sensor.

2) Cut Sensor and check resistance value.

3

- 79 -

0 Ù

OFF

Result

Short

Open

Service Action

Replace Product

Change the sensor

1) Abnormal Freezer Sensor Error

NO.

4

5

CHECKING FLOW RESULT & SERVICE ACTION

1) Remove the Cover sensor.

2) Cut sensor and stripe terminals.

3) Make a short in striped terminals.

4) Maker measurement.

0 Ù

OFF

YES

ERROR

Result

Result

Short

Open

Normal

Same

Different

Service Action

Change the sensor

Replace Product

Service Action

Explain to costumer

Replace Main PCB

Proceed acord the
displayed error

6

Resistance Values are according to Temperature
Chart table?

YES

NO

Result

Normal
Sensor

Abnormal
Sensor

Service Action

Replace Main PCB

Replace Sensor

- 80 -

2) Abnormal Refrigerator Sensor Error (1)

NO.

1

2

CHECKING FLOW RESULT & SERVICE ACTION

Check for a loose connection in CON7

Unplug connector and check between
White to White as is shown in the picture.

Result

Firmly plugged

Loose

Result

0 Ù

OFF

Other

Short

Open

Normal

Service Action

Go to Step 2

Service Action

Go to Step 3

Check the Temperature
and Resistance
(Temperature Chart #2)
Go to Step 7

1) Remove the Control Box in Refrigerator sensor.

2) Check for any loose connection.

3

3) Turn on the Refrigerator.

Connectors must be firmly .connected, and wires don’t be
have any damage.

Next Action: Go to Step 4.

- 81 -

2) Abnormal Refrigerator Sensor Error (1)

NO.

4

5

CHECKING FLOW RESULT & SERVICE ACTION

Unplug connector of Control Box.

Unplug connector in CON 7 and check between
White to White as is shown in the picture.

Go to Step 5.

Result

0 Ù

OFF

Short

Open

Service Action

Replace Product

Go to Step 6

1) Remove the Control Box in Refrigerator sensor.

6

Check resistance value between and .

1

2

Resistance Values are according to Temperature
Chart table?

7

Result

0 Ù

OFF

1

4

Other

Short

Open

Normal

Service Action

Replace Control Box
Assembly or sensor
(if possible).

Check the Temperature
and Resistance
(Temperature Chart #2)
Go to Step 7

4

3

YES

NO

Result

Normal
Sensor

Abnormal
Sensor

Service Action

Replace Main PCB

Replace Sensor

- 82 -

3) Abnormal Refrigerator Sensor Error (2)

NO.

1

2

CHECKING FLOW RESULT & SERVICE ACTION

Check for a loose connection.

Unplug connector in CON 7 and check between
Gray to Gray as is shown in the picture.

Result

Firmly plugged

Loose

Result

0 Ù

OFF

Other

Short

Open

Normal

Service Action

Go to Step 2

Service Action

Go to Step 3

Go to Step 4

Check the Temperature
and Resistance
(Temperature Chart #2)
Go to Step 6

1) Remove Cover sensor.

2) Cut sensor and check resistance value.

3

- 83 -

0 Ù

OFF

Result

Short

Open

Service Action

Replace Product

Change Sensor

3) Abnormal Refrigerator Sensor Error (2)

NO.

4

5

CHECKING FLOW RESULT & SERVICE ACTION

1) Remove the Cover sensor.

2) Cut sensor and stripe terminals.

3) Make a short in striped terminals.

4) Maker measurement.

1) Reconnect CON 7.

2) Reset Refrigerator.

3) Execute DISPLAY CHECK MODE

4) All LED’s on?

0 Ù

OFF

YES

ERROR

Result

Result

Short

Open

Normal

Same

Different

Service Action

Change the sensor

Replace Product

Service Action

Explain to costumer

Replace Main PCB

Proceed acord the
displayed error

Resistance Values are according to Temperature
Chart table?

6

- 84 -

YES

NO

Result

Normal
Sensor

Abnormal
Sensor

Service Action

Replace Main PCB

Replace Sensor

4) Abnormal Defrost Sensor Error

NO.

1

2

CHECKING FLOW RESULT & SERVICE ACTION

Remove cover PCB, then, check for loose
connection in CON6.

Unplug connector and check between
Orange to Orange as is shown in the picture.

Result

Firmly plugged

Loose

Result

0 Ù

OFF

Other

Short

Open

Normal

Service Action

Go to Step 2

Service Action

Go to Step 3

Check the Temperature
and Resistance
(Temperature Chart #2)

In Freezer compartment, unplug Defrost controller
assembly, then, check resistance value between

Orange to Orange.

Defrost Controller
Assembly connector

3

Unplug connector CON 6 from Main PCB and
check between Orange to Orange as is shown
in the picture.

4

0 Ù

OFF

Other

0 Ù

OFF

Other

Result

Result

Short

Open

Normal

Short

Open

Normal

Service Action

Replace Defrost controller
assembly, then, explain to
customer.

Plug Defrost controller
assembly, then, go to
step 4.

Service Action

Replace Product

Replace Main PCB

- 85 -

5) Abnormal Room Temperature Sensor Error

NO.

1

2

CHECKING FLOW RESULT & SERVICE ACTION

Check for a loose connection in CON5.

Unplug connector in CON 5 and check between
White to White as is shown in the picture.

Result

Firmly plugged

Loose

Result

0 Ù

OFF

Other

Short

Open

Normal

Service Action

Go to Step 2

Service Action

Change the sensor

Replace Product

Check the Temperature
and Resistance
(Temperature Chart #3)

- 86 -

6) Abnormal Ice maker Temperature Sensor Error

NO.

1

2

CHECKING FLOW RESULT & SERVICE ACTION

Check for a loose connection in CON8
on Main PCB.

In Freezer compartment remove Tray ice, remove
screw of Ice maker unit, quit Ice maker from holders
and check for any loose connection.

Result

Firmly plugged

Loose

Result

Firmly plugged

Loose

Service Action

Go to Step 2

Service Action

Go to Step 3

In the Main PCB, unplug CON8 and check between
Gray to Gray as is shown in the picture.

3

Unplug Ice maker unit and check value between

White to White.

4

- 87 -

0 Ù

OFF

Other

0 Ù

OFF

Other

Result

Result

Short

Open

Normal

Short

Open

Normal

Service Action

Plug CON 8, then, go to
Step 4

Replace Main PCB

Service Action

Replace Ice Maker unit

Replace product

7) Abnormal Defrost Error

NO.

1

2

CHECKING FLOW RESULT & SERVICE ACTION

Check the Door Gasket for any abnormality.

Unplug the product, remove Grille Fan assy, and
check the Defrost Control Part.

Defrost Controller

Assy connector

Defrost
sensor

Defrost

Heater

Connector

Reset Refrigerator, then, enter to TEST MODE 2
(Press twice TEST S/W on Main PCB.

Fuse-M

Fuse-M

Defrost
Heater

Desfrost
Sensor

Result

48~54 Ù

0 Ù

OFF

Other

0 Ù

OFF

Service Action

Go to Step 3
Change Defrost

Controller Assy
Go to Step 3

Change Defrost

Controller Assy
Go to Step 3
Change Defrost

Controller Assy

3

Check Voltage between Purple to Brown
wires in CON 2.

4

Release TEST MODE 2 (Press once TEST S/W
on Main PCB)

5

Check Voltage between Purple to Brown
wires in CON 2.

6

110~127 V

0 V

0 V

110~127 V

Result

Result

All LED’s ON

Service Action

Go to Step 5

Replace Main PCB

Service Action

Explain to customer

Replace Main PCB

- 88 -

8) Abnormal Ice maker Unit Error

NO.

1

2

CHECKING FLOW RESULT & SERVICE ACTION

Remove Cover PCB, then check for any loose
connection in CON 8.

Remove Tray ice, remove screw of Ice maker unit,
quit Ice maker from holders and check for any
loose connection.

Result

Firmly plugged

Loose

Result

Firmly plugged

Loose

Service Action

Go to Step 2

Service Action

Go to Step 3

Check Voltage from Ice maker S/W in CON 8.

3

Check Voltage from Ice maker TEST S/W in CON 8.
Press the TEST S/W of Ice maker unit for 3 seconds,
permit finish Test Cycle before press again.

4

- 89 -

ON

OFF

ON

OFF

Result

Result

5V

0V

Other

5V

0V

Other

5V

0V

Other

5V

0V

Other

Service Action

Replace Ice maker unit

Go to Step 4

Replace Main PCB

Go to Step 4

Replace Ice maker unit

Replace Main PCB

Service Action

Replace Ice maker unit

Go to Step 5

Replace Main PCB

Go to Step 5

Replace Ice maker unit

Replace Main PCB

8) Abnormal Ice maker Unit Error

NO.

5

6

CHECKING FLOW RESULT & SERVICE ACTION

Check HALL IC signal in CON 8
Press Ice maker TEST S/W for 3 seconds. Check
the change between 0V and 5V in HALL IC signal
during Test period.

Check Motor Signal in CON 8.
Press Ice maker TEST S/W for 3 seconds. Check the
Voltage changes in motor signal during Test period.
It must change from positive voltage to negative
voltage during the Test.

Result

Signal Change
(0V 5V 0V ...)

No change (Still in 0V
or 5V)

Other

Result

Voltage inversion

No voltage inversion

Service Action

Go to Step 6

Replace Ice maker unit

Replace Main PCB

Service Action

Go to Step 6

Replace Main PCB

Check the movements in Ice maker unit.
Press Ice maker TEST S/W for 3 seconds. Check
the rotation of motor and the movement of arm.

7

- 90 -

Result

Movement is
present in
Motor and
Arm

No movement
present
in Motor and
Arm

Normal

Abnormal

Service Action

Explain to costumer

Replace Ice maker unit

9) Abnormal Cooling Fan Error

NO.

1

2

CHECKING FLOW RESULT & SERVICE ACTION

Turn Off the product.

Remove Cover Machin Room, and check the
movement of Cooling Fan Motor manually, feel
the rotation condition, then proceed.

1) Turn On the product.

2) Remove Cover PCB, then press TEST S/W on
Main PCB to enter to TEST MODE 1.

Tight
Movement

Free
movement

Air Flow

No Air Flow

Result

Result

Abnormal

Normal

Normal

Abnormal

Service Action

Go to Step 3

Service Action

Go to Step 4

Go to Step 5

3

3) Check the Fan rotation.
NOTE: If error code is displayed, Fan won’t operates.

Air flow direction

Check Motor rotation (air flow) is continuous for
more than 3 minutes.
NOTE: If error is detected, Fan Motor will try to work
4 or 5 times.

4

ON OFF ON OFF ON ... OFF
15s 10s 15s 10s 15s

Continuous

Intermittent

Result

Normal

Abnormal

Service Action

Explain to the customer

Go to Step 5

- 91 -

9) Abnormal Cooling Fan Error

(b) ~ (c)

NO.

5

6

CHECKING FLOW RESULT & SERVICE ACTION

1) Reset product.

2) Enter to TEST MODE 1 (press once TEST S/W
on Main PCB)

3) Remove Cover PCB.

4) Check voltage in CON 6 as shown in the pictures.

Disconnect Motor connector, and check status of
plated terminals.

Terminals contact surface must be free of rust and
dirt. Also, the terminals red with a T.P.A., Motor
wire must not have any damage.

Result

(a) ~ (b)

(b) ~ (c)

(a) ~ (b)

Wire damage,rust, dirt,
TPA absences.

Normal appearance

Normal

Abnormal

Result

Service Action

Change Main PCB

Change Motor

Service Action

Change Main PCB

Go to Step 7

Reset the product.

After 3 minutes execute DISPLAY CHECK MODE,
check the result.

7

- 92 -

All Display
LED’s are
turned ON

Cooling Fan
Error Code
appears

Result

Normal

Abnormal

Service Action

Explain to the customer

Replace Cooling
Fan Motor

10) Abnormal Freezer Fan Error

NO.

1

2

3

CHECKING FLOW RESULT & SERVICE ACTION

Turn Off the product.

Remove Grille Fan Assembly, and check the
movement of Freezer Fan Motor manually, feel
the rotation condition, then proceed.

1) Turn On the product.

2) Remove Cover PCB, then press TEST S/W on
Main PCB to enter to TEST MODE 1.

3) Check the Fan rotation.
NOTE: If error code is displayed, Fan won’t operates.

Tight
Movement

Free
movement

Air Flow

No Air Flow

Result

Result

Abnormal

Normal

Normal

Abnormal

Service Action

Go to Step 3

Service Action

Go to Step 4

Go to Step 5

Check Motor rotation (air flow) is continuous for
more than 3 minutes.
NOTE: If error is detected, Fan Motor will try to work
4 or 5 times.

4

ON OFF ON OFF ON ... OFF
15s 10s 15s 10s 15s

- 93 -

Continuous

Intermittent

Result

Normal

Abnormal

Service Action

Explain to the customer

Go to Step 5

10) Abnormal Freezer Fan Error

NO.

5

6

CHECKING FLOW RESULT & SERVICE ACTION

1) Reset product.

2) Remove Cover PCB.

3) Enter to TEST MODE 1 (press once TEST S/W
on Main PCB)

4) Check voltage in CON 6 as shown in the pictures.

Disconnect Motor connector, and check status of
plated terminals.

Terminals contact surface must be free of rust and
dirt. Also, the terminals must be assured with a
T.P.A., Motor wire must not have any damage.

Result

(a) ~ (b)

(b) ~ (c)

(a) ~ (b)

(b) ~ (c)

Wire damage,rust, dirt,
TPA absences.

Normal appearance

Below 10V

0V or 5V

Result

Service Action

Change Main PCB

Go to Step 6

Service Action

Replace Motor

Go to Step 7

Reset the product.

After 3 minutes execute DISPLAY CHECK MODE,
check the result.

7

- 94 -

All Display
LED’s are
turned ON

Freezer Fan
Error Code
appears

Result

Normal

Abnormal

Service Action

Explain to the customer

Replace Freezer
Fan Motor

1

3

2

3

2. Troubleshooting With Error Display

11) Ice Cube Mode is not working

NO.

Check Lever S/W signal in CON 4.

CHECKING FLOW RESULT & SERVICE ACTION

1

Check Auger Motor signal in CON 3 & CON 2.

2

Lever S/W

Pressing

Not Pressing

Lever S/W

Pressing

Not
Pressing

0 Vac
Other

50~70 Vac

Other

110~127 Vac

Other

0 Vac

Other

Service Action

Go to Step 2

Change PCB

Go to Step 2

Change PCB

Service Action

Go to Step 3

Change PCB

Go to Step 3

Change PCB

Check Solenoid Cube signal in CON 2.

3

Check impedance in solenoid cube and auger motor
signal in CON 2.

1

4

2

Lever S/W

Pressing

Not
Pressing

to

3

to

110~127 Vac

Lever S/W

33 ~43 Ù

2.88-2.52Ù

1

to

Other

0 Vac

Other

Other

Other

3

Service Action

Go to Step 4

Change PCB

Go to Step 4

Change PCB

Service Action

Go to Step 5

Replace Solenoid Cube

Go to Step 5

Repalce auger motor

3

2

to

4

- 95 -

11) Ice Cube Mode is not working

NO.

Remove Cover dispenser, then check for any
loose connection in Duct motor.

CHECKING FLOW RESULT & SERVICE ACTION

5

Unplug connector from Duct motor and check the
resistance value.

6

Check Duct Motor signal in CON 9.

NOTE: Voltage only will be appreciated during the
first second after press lever S/W after release
lever S/W voltage to close Duct Motor will be applier.

Result

Firmly plugged

Loose

Result

3

to

2

Lever S/W

Pressing

Not
Pressing

9.9 ~12.1 Ù

Other

+/- 12Vdc

Other

Same than
pressing
voltage, but
inverted

Other

Service Action

Go to Step 6

Service Action

Go to Step 7

Replace Duct Motor

Service Action

Go to Step 8

Change PCB

Go to Step 8

Change PCB

7

Refer to next diagram.

ITEM STATUS

Pressed

Lever S/W Released

012345 678910111213

12V

Duct Motor 0V

-12V

- 96 -

11) Ice Cube Mode is not working

NO.

Remove Cover hinge in Freezer Door, and check
connection.

CHECKING FLOW RESULT & SERVICE ACTION

8

Disconnect joint 1 as is marked in the picture.

9

Then check resistance value marked points.

Result

Firmly plugged

Loose

Result

0 Ù

OFF

Service Action

Go to Step 9

Service Action

Replace Product

Go to Step 10

10

Unplug connector from Duct Motor and check the
resistance value in the connector.

- 97 -

Result

0 Ù

OFF

Service Action

Replace Door assembly

Explain to customer

12) Ice Crush Mode is not working

NO.

Check Lever S/W signal in CON 4.

CHECKING FLOW RESULT & SERVICE ACTION

1

Check Auger Motor signal in CON 3 & CON 2.

2

Lever S/W

Pressing

Not Pressing

Lever S/W

Pressing

Not
Pressing

0 Vac
Other

50~70 Vac

Other

110~127 Vac

Other

0 Vac

Other

Service Action

Go to Step 2

Change PCB

Go to Step 2

Change PCB

Service Action

Go to Step 3

Change PCB

Go to Step 3

Change PCB

Check impedance in solenoid cube and auger motor
signal in CON 2.

1

3

2

Remove Cover dispenser, then check for any
loose connection in Duct motor.

4

2

Lever S/W

3

to

2.88-3.52Ù
Other

Service Action

Go to Step 5

Repalce auger motor

3

3

2

to

4

Result

Firmly plugged

Loose

Service Action

Go to Step 5

Plug firmly, then check
again.
Problem persist?
Yes: Go to Step 5
No: Explain to Customer

- 98 -

12) Ice Crush Mode is not working

NO.

Unplug connector from Duct motor and check the
resistance value.

CHECKING FLOW RESULT & SERVICE ACTION

5

Check Duct Motor signal in CON 9.

NOTE: Voltage only will be appreciated during the
first second after press lever S/W after release
lever S/W voltage to close Duct Motor will be applier.

Refer to next diagram.

6

ITEM STATUS

Pressed

2

to

Lever S/W

Pressing

Not
Pressing

Result

9.9 ~12.1 Ù

3

Other

+/- 12Vdc

Other

Same than
pressing
voltage, but
inverted

Other

Service Action

Go to Step 6

Replace Duct Motor

Service Action

Go to Step 7

Change PCB

Go to Step 7

Change PCB

Lever S/W Released

0 1 2 3 4 5 6 7 8 9 10 11 12 13

12V

Duct Motor 0V

-12V

Remove Cover hinge in Freezer Door, and check
connection.

7

- 99 -

Result

Firmly plugged

Loose

Service Action

Go to Step 8