LG LFX25976STL, FX25976WB, LFX25976SW Service Manual

REFRIGERATOR

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

MODEL: LFX25976ST

LFX25976WB
LFX25976SW

COLOR : STAINLESS(ST)

WESTERN BLACK
SUPER WHITE

CONTENTS

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

1. SPECIFICATIONS ............................................................................................................................................................. 3

2. PARTS IDENTIFICATION ................................................................................................................................................. 4

3. DISASSEMBLY ............................................................................................................................................................ 5-16

REMOVING AND REPLACING REFRIGERATOR DOORS ............................................................................................. 5

DOOR ................................................................................................................................................................................ 6

DOOR ALIGNMENT .......................................................................................................................................................... 7

FAN AND FAN MOTOR(EVAPORATOR) ......................................................................................................................... 7

DEFROST CONTROL ASSEMBLY ................................................................................................................................... 7

LAMP ................................................................................................................................................................................. 8

MULTI DUCT ..................................................................................................................................................................... 8

MAIN PWB ......................................................................................................................................................................... 9

DISPENSER ...................................................................................................................................................................... 9

DISPLAY PCB ................................................................................................................................................................... 9

ICE BUTTON ASSEMBLY ................................................................................................................................................. 9

WATER BUTTON ASSMEBLY ........................................................................................................................................ 10

ICE CORNER DOOR REPLACEMENT ........................................................................................................................... 10

ICEMAKER REPLACEMENT ..................................................................................................................................... 10-11

SUB PWB FOR WORKING DISPENSER ....................................................................................................................... 11

CAP DUCT MOTOR REPLACEMENT ............................................................................................................................ 11

HOW TO REMOVE A ICE BIN ........................................................................................................................................ 12

HOW TO INSERT A ICE BIN ........................................................................................................................................... 12

HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER ............................................................................. 13-14

WATER VALVE DISASSEMBLY METHOD .................................................................................................................... 15

FAN AND FAN MOTOR DISASSEMBLY METHOD ........................................................................................................ 15

PULL OUT DRAWER ...................................................................................................................................................... 16

4. ADJUSTMENT ........................................................................................................................................................... 17-19

COMPRESSOR ................................................................................................................................................................ 17

INTRODUCTION OF E-LINEAR COMPRESSOR ...................................................................................................... 17-19

5. CIRCUIT DIAGRAM ........................................................................................................................................................ 20

6. TROUBLESHOOTING .................................................................................................................................................... 21

7. PCB PICTURE ........................................................................................................................................................... 22-23

8. Troubleshooting With Error Display ....................................................................................................................... 24-32

9. Troubleshooting Without Error Display ................................................................................................................. 33-41

10. Reference .................................................................................................................................................................. 42-47

11. COMPONENT TESTING INFORMATION ................................................................................................................. 48-56

12. TROUBLESHOOTING .............................................................................................................................................. 57-63

13. ICEMAKER OPEARTING AND TROUBLE SHOOTING METHOD ......................................................................... 64-67

14. DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM ........................................................................................... 68-71

SAFETY PRECAUTIONS

Please read the following instructions before servicing your refrigerator.

1. Unplug the power before handling any elctrical componets.

2. Check the rated current, voltage, and capacity.

3. Take caution not to get water near any electrical components.

4. Use exact replacement parts.

5. Remove any objects from the top prior to tilting the product.

- 2 -

1. SPECIFICATIONS

25 cu. ft.

ITEMS SPECIFICATIONS

DOOR DESIGN

DIMENSIONS (inches)

NET WEIGHT (pounds)

COOLING SYSTEM

TEMPERATURE CONTROL

DEFROSTING SYSTEM

DOOR FINISH

HANDLE TYPE

INNER CASE

INSULATION

DIMENSIONS

Side Rounded

35

X 34

X 69

3/

1/

4

4

(WxDxH) 25cu.ft

3/

4

324.18 (25cu.ft)

Fan Cooling

Micom Control

Full Automatic

Heater Defrost

Embossed Metal, VCM, Stainless

Bar

ABS Resin

Polyurethane Foam

ITEMS SPECIFICATIONS

VEGETABLE TRAY

COMPRESSOR

EVAPORATOR

CONDENSER

REFRIGERANT

LUBRICATING OIL

DEFROSTING DEVICE

REFRIGERATOR

LAMP

FREEZER

Opaque Drawer Type

Linear

Fin Tube Type

Spiral Condenser

R-134a (140 g)

ISO10 (280 ml)

SHEATH HEATER

LED Module(27)

Bulb Lamp

Description LFX25976

Depth w/ Handles

Depth w/o Handles

Depth w/o Door

Depth (Total with Door Open)

Height to Top of Case

Height to Top of Door Hinge

Width

Width (door open 90 deg. w/o handle)

Width (door open 90 deg. w/ handle)

- 3 -

A

B

C

D

E

F

G

H

I

34 1/4 in.

31 3/4 in.

27 7/8 in.

46 1/2 in.

68 3/8 in.

69 3/4 in.

35 3/4 in.

39 1/4 in.

44 1/4 in.

2. PARTS IDENTIFICATION

ADJUSTABLE REFRIGERATOR SHELVING

1

The refrigerator compartment shelves are adjustable to allow
flexibility for storage needs.

GALLON STORAGE BINS

2

Three interchangeable bins can be arranged to suit your
storage needs.

REMOVABLE ICE STORAGE BIN

3

The ice storage bin can be removed to fill ice buckets,
coolers, or pitchers.

LED INTERIOR LAMPS

4

Refrigerator interior is lit by the LED array.

CAN STORAGE BIN

5

FIXED DOOR BINS

6

- 4 -

3. DISASSEMBLY

Correct

Incorrect

3-1 REMOVING AND REPLACING REFRIGERATOR DOORS

Removing Refrigerator Door

CAUTION: Before you begin, unplug the refrigerator. Remove food and bins from doors.

Left Door -FIG. 2

1. Disconnect water supply tube by pushing back on the disconnect ring (3).-FIG. 1

2. Open door. Loosen top hinge cover screw (1).
Use flat tip screwdriver to pry back hooks on front underside of cover (2). Lift up cover.

3. Disconnect door switch wire harness. Remove cover.

4. Pull out the tube.

5. Disconnect the three wire harnesses (4). Remove the grounding screw (5).

6. Rotate hinge lever (6) counterclockwise. Lift top hinge (7) free of hinge lever latch (8).

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

7. Lift door from middle hinge pin and remove door.

8. Place door, inside facing up, down onto a non-scratching surface.

Right Door -FIG. 3

1. Open door. Loosen top hinge cover screw (1). Lift up cover (2).

2. Disconnect door switch wire harness. Remove cover.

3. Rotate hinge lever (3) clockwise. Lift top hinge (4) free of hinge lever latch (5).

4. Lift door from middle hinge pin and remove door.

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

5. Place door, inside facing up, down onto a non-scratching surface.

Figure 2 Figure 3

Figure 1

- 5 -

1) Insert the tube until you can see only one of
the lines printed on the tube.

2) After inserting, pull the tube to ascertain that
it is secure.

3) Assemble clip.

3-2 DOOR

Pillar Removal

1. Remove 2 screws.

2. Lift pillar up carefully.

3. Disconnect wire harness.

Door Gasket Replacement

1. Insert gasket into channel

Press gasket into channels on the four remaining
sides of door.

Figure 6

Pillar Replacement

1. Connect wire harness.

Door Gasket Removal

1. Remove gasket

Pull gasket free from gasket channel on the four
remaining sides of door.

2. Insert pillar into channel.

Inserting pillar assy’ into bracket, door

3. Assemble 2 screws.

Figure 3

- 6 -

3-3 Door Alignment

If the space between your doors is uneven, follow the
instructions below to align the doors:
Remove the Base Grillie. Turn the leveling legs (CCW) to
raise or (CW) to lower the height of the front of the
refrigerator by using flat blade screw driver or 11/32"
wrench. Use the wrench (Included with the User Manual) to
adjust the bolt in the door hinge to adjust the height. (CCW
to raise or CW to lower the height.)

* Ice Fan Scroll Assembly Replacement

1) Remove the plastic guide for slides on left side by
unscrewing phillips head screws.

2) Pull the grille forward as shown in the second picture.

3) Disconnect wire harness of the grille.

4) Remove the scroll assembly by loosening all screws.

(1) (2)

Figure 8

3-4 FAN AND FAN MOTOR(EVAPORATOR)

1. Remove the freezer shelf. (If your refrigerator has an
icemaker, remove the icemaker first)

2. Remove the plastic guide for slides on left side by
unscrewing phillips head screws.

3. Remove the grille by removing one screw and pulling the
grille forward.

4. Remove the Fan Motor assembly by loosening 2 screws
and disassembling the shroud.

5. Pull out the fan and separate the Fan Motor and Bracket.

FAN MOTOR

BRACKET

MOTOR

FAN

(3) (4)

3-5 DEFROST CONTROL ASSEMBLY

Defrost Control assembly consists of Defrost Sensor and
FUSE-M.
The Defrost Sensor works to defrost automatically. It is
attached to the metal side of the Evaporator and senses its
temperature. At 46°F (8°C), it turns the Defrost Heater off.
Fuse-M is a safety device for preventing over-heating of the
Heater when defrosting.

1. Pull out the grille assembly. (Figure 10)

2. Separate the connector with the Defrost Control
assembly and replace the Defrost Control assembly after
cutting the Tie Wrap. (Figure 11)

GRILLE ASSEMBLY

Figure 10 Figure 11

DEFROST-CONTROL
ASSEMBLY

GRILLE

CAUTION

DO NOT ATTEMPT TO REMOVE THE MULLION :

REFRIGERANT LINES!

Figure 9

CAUTION

DO NOT ATTEMPT TO REMOVE THE MULLION :

REFRIGERANT LINES!

- 7 -

3-6 LAMP

Unplug Refrigerator, or disconnect power at the circuit
breaker.
If necessary, remove top shelf or shelves.

3-6-1 Refrigerator Compartment Lamp

1) Release 2 screws.

2) Hold both ends with your both hands and pull it
downward to remove it.

Figure 12

3) Use a flat tool as shown below to remove
the cover lamp.

3-7 MULTI DUCT

1. Remove the upper and
lower Caps by using a flat
screwdriver, and remove 2
screws. (Figure 16)

2. Disconnect the lead wire
on the bottom position.

Figure 16

Figure 13

4) As shown below, use a flat tool to remove the cover
lamp.

Cover, Lamp

3-6-2 Freezer Compartment Lamp

1. Unplug refrigerator power cord form outlet.

2. Remove screw with direver.

3. Grasp the cover Lamp,pull the cover downward.

LED, Assembly Case Lamp

Figure 14

Figure 15

- 8 -

3-8 MAIN PWB

1) Loosen the 3 screws on the PWB cover.

2) Remove the PWB cover

3) Disconnect wire harness and replace the main PWB in
the reverse order of removal.

CAUTION: When replacing the dispensor cover in the
reverse order of removal, be careful that the lead wire
does not come out and the water tube is not pinched by
the dispensor.

3-10 DISPLAY PCB

As shown below, remove 1 case PCB fixing screw.
Remove the display PCB fixing screw.

3-9 DISPENSER

1) Pull out the darin 2) Hold the inner side of

cover dispenser with
both hands at the handle
side to pull it out forward.

Case, PCB

Display PCB

3-11 ICE BUTTON ASSEMBLY

1) Remove the screw fixing the button lever.

2) Push the spring from the hanging hook to remove it.

3) Apply some pressure to the rib in
button in

Button Lever

direction.

direction and lift the

3) If nozzle is interfered with button,
push and pull out the bottom of
button.

4) Rmove the
connected part
of Lead wire.

- 9 -- 9 -

3-12 WATER BUTTON ASSMEBLY

1) Romove screws.

2) Grasp the Button assembly and lift up.

Button Lever

3-13 ICE CORNER DOOR REPLACEMENT

1) Loosen the front screw as shown in the picture.

2) Lift up the hinge with one hand.

3) Pull out the Ice Corner Door with the other hand.

3-14 ICEMAKER REPLACEMENT

1) Remove the stainless screws marked in the picture
below.

2) Grasp the bottom of motor cover assembly and pull it out
slowly.

hinge

3) Disconnect wire harness from wall of compartment.

In-door
motor

- 10 -

Caution: Check to see if the housing is stuck to mold and
taped. If the housing is not on its original position, it will
disturb Cover, motor to be positioned to the unit.

3-15 SUB PWB FOR WORKING DISPENSER

1) Disconnect the wire harness.

3-16 CAP DUCT MOTOR REPLACEMENT

1) Separate the Housing of the Cap Duct Motor.

2) Unscrew 3 screws to disassemble the motor.

3) When replacing to a new Motor, always check position of
the Duct Door and Link to install the Motor.

Duct Door

Link

Cap Duct Motor

NG Position

2) Loosen the screw on the sub PWB and replace the sub
PWB in the reverse order of removal.

4) Assemble on the screws.

5) Contract the Housing.

- 11 -

3-17 HOW TO REMOVE A ICE BIN



1) Grip the handles, as shown in the picture.

2) Lift the lower part slightly.

3-18 HOW TO INSERT A ICE BIN

1) Insert the Ice Bin, slightly tilting it to avoid touching the
Icemaker. (Especially, Ice-Detecting Sensor)

3) Take the Ice Bin out slowly.

- 12 -

3-19 HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER

3-19-1 Follow Steps to Remove

Step 1) Open the freezer door.

Step 3) Remove the two screws from the guide rails (one

from each side).

Step 2) Remove the lower basket.

Step 4) Lift the freezer door up to unhook it from the rail

support and remove.
Pull both rails to full extension.

Step 5) First :

Second : Remove the center rail.

Third : Remove the gear from the right side by following the same steps for the left side.

Remove the gear from the left side first by releasing the tab behind the gear, place a screwdriver between the
gear and the tab and pull up on the gear.

NOTE : THIS TAB MUST BE PUSHED IN TO RELEASE THE GEAR.

- 13 -

3-19-2 Follow Steps to Reinstall

Step 1) Reinstall the right side gear into the clip.

Step 2) Insert the rail into the right side gear. Gears do not

need to be perpendicular to each other.

Step 4) The rail system will align itself by pushing the rails

all the way into the freezer section.
Pull the rails back out to full extension.

Step 3) Insert the rail into the left side gear, and insert the

gear into the clip.

Step 5) Reinstall the freezer door by inserting the rail tabs

into the guide rail.

Step 6) Reinstall the two screws into the guide rails

(one from each side).

Step 7) Reinstall the lower basket, and close the freezer

door.

- 14 -

3-20 WATER VALVE DISASSEMBLY METHOD

→

→

1) Turn off the water. Then separate the water line from the
valve.

3-21 FAN AND FAN MOTOR DISASSEMBLY

METHOD

1) Using a short screwdriver, loosen one SCREW in DRAIN
PIPE ASSEMBLY and one connected to the MOTOR
COVER.

MOTOR COVER

2) Separate the Mechanical Cover and Valve Screw.

Mechanical Cover

3) Separate the housing and pull out the valve.

Housing

4) Lay a dry towel on the floor and get ready to spill water
from the water filter. Pull out the Cilp. Then press te
collet to separate the tube from the connector and pour
out the water until emptied.

2) Pull and separate the FAN ASSEMBLY and MOTOR
turning counterclockwise based on the MOTOR SHAFT.

FAN ASSEMBLY

The assembly is in the reverse order of the disassembly and
take special care for the following details.

1. Be careful not to bend the tube during assembly.

2. Press the WATER DISPENSER button until water pours
out and check for leakage in the CONNECTOR TUBE (It
differs by the water pressure but usually takes about 2
minutes until water pours out.)

MOTOR

- 15 -

3-22 PULL OUT DRAWER

To remove the drawer, push the tabs located on the front inside surface of each rail. Next, gently lift the rear left and right
sides of the drawer and pull it out.

To reinstall, pull out both rails to full extension. Insert the end of rib in the bracket at left and right. Making sure that the
guides at the front are lined up properly, gently push down on both sides.

Bracket

- 16 -

4. ADJUSTMENT

❸

❶

❷

4-1 COMPRESSOR

4-1-1 Role

The compressor intakes low temperature and low pressure
gas from the evaporator of the refrigerator and compresses
this gas to high-temperature and high-pressure gas. It then
delivers the gas to the condenser.

4-1-2 Note for Usage

(1) Be careful not to allow over-voltage and over-current.
(2) Do not drop or handle carelessly.
(3) Keep away from any liquid.

If liquid such as oil or water enters the Cover PTC
Compressor may fail due to breakdown of their
insulating capabilities.

(4) Always use the Parts designed for the compressor and

make sure it is properly attached to the compressor.
Parts may appear physically identical but could have
different electrical ratings. Replace parts by part number
and model number. Use only approved substitute parts.

4-1-3 Remove the cover PTC

4-2 INTRODUCTION OF E-LINEAR COMRESSOR

E-Linear compressor is run by mechanical part design
through automatically varying the cooling power. The
main parts consist of compressor and Sub PCB which
controls the compressor. PCB authorizes constant
voltage and constant frequency to the compressor and
protects it.

4-2-1 Control of Compressor Block Diagram

PWM

Compressor Controller Inverter

Main

Micom

Control Block Diagram of Compressor

Signal

Frequ

-ency

DC link

Voltage

Counter elec-

tromotive force

Calculate counter

electromotive force

Linear
Comp

Vcap Voltage

(1) Remove the Cover Back M/C

(2) Loosen two screws on comp base

(3) Use a L-shaped flap tooll to pry off the cover
(4) Assembly in reverse order of disassembly

4-2-2 Compressor operating pattern

Drive half stroke after turning on initial power for 1
second. Then, Reach Target Voltage by increasing

0.35 Vrms per every 0.3 second. Once reaching the
target input, input naturally changes according to
refrigerator load without any special control.

Comp. input

Interval 1) Half stroke interval - after initial running, stay at

the initial value for 1 second

Interval 2) Running interval - Increase at every 0.3 till it

reaches the target input; it takes about 1 minute

Interval 3) CVCF interval - Run by target voltage and main

operating frequency and the input naturally
changes according to refrigerator load

- 17 -

4-2-3 Compressor protection logic

Since linear Comp conducts linear reciprocating motion,
we have protection logic for compressor, motor and PCB
as the below.

- Stroke Trip
During the operation, if stroke is above the target value,
decrease the target volt by 3V.

- Current Trip
Current trip is set in order to protect compressor
mechanical part and drive from the overcurrent that might
arise during the operation.
Check the current for every 416.7us and if the Trip
exceeds 1.86Arms more than three times at Comp ON,
forcibly stop and restart six minutes later.

4-2-4 Compressor problems diagnosis

When there is a problem or failure with the `operation,
you are kindly recommended to check it as follows ;

1) Check to normality by measurement of resistance

Measure the resistance between poles of the hermetic
terminal (as shown picture) with a multi-tester.
(measurement several minutes after power off)

P : Power Line
C : Common Line

Multi-tester

- Lock Piston Trip
If stroke is under 5mm even if the current is more than
14Arms, Take it as ‘piston lock’ and restart after 2’30” of
Comp OFF. Check the current and stroke for every

416.7us and if the condition fits more than three times at
Comp ON, the Trip occurs.

- IPM fault Trip
It occurs if FO signal received from IPM is LOW. For
every 416.7us, check whether FO signal is LOW. The trip
occurs if it is found three times during the five
periods(83ms).

Case 1-1
If the measured values lie in the normal resistance range as
in the table below,

Compressor is normal.

Case 1-2
If the measured values are above several M

Wire is disconnected in the shell.

Case 1-3
If the measured values are excessively of small number,

There is short somewhere in the shell.

Normal resistance range (measured at ambient
temperature 23

According to ambient temperature or operation situation,
the values could show a little deviation.

)

FC75LANE

Resistance

6~8

or a infinity,

- 18 -

2) Check to normality by measurement of Voltage

3) Check problems by LED On & Off Count _ (Sub PCB)

Measure the resistance between pin of the connector (as
shown picture) with a multi-tester.

<Fig. 1> <Fig. 1>

Standard for normality

- In order to decide whether compressor operating is normal
or not, check the output transfer during the refrigerator
operation.

- After input the initial power and compressor operates, wait
for 10 minutes to estimate.

- Compressor operation may be diagnosed as normal if the
voltage falls between 145V and 180V.

Warning

1. Please be cautious of electric shock and short (it is

estimated after turning on initial power).

2. If the voltage is estimated less than 80V, it is diagnosed

as bad.

If compressor protection logic is running, LED Lamp’s
blinking frequency of sub PCB, which takes in charge of
control, can help estimate the protection logic’s symptoms
and the cause of its problems.

Trip name

Stroke Trip

Current Trip

Lock Piston Trip

IPM fault trip

- Current Trip PCB defects or Cycle clogging maybe the
causes. After estimating winding resistance, estimate
compressor operation voltage to check if there is any
problem and take actions to repair cycle at replacement of
compressor.

- Stroke Trip
temperature is high, C-Fan, F-Fan and so on are
constrained, or when cycle problems, such as moisture
blocking or compressor defect, are related.

- Lock Piston Trip
potential cause of a defect, estimate the compressor
resistance value according to #1’s compressor winding
value estimation method and estimate the #2’s
compressor operation voltage to decide whether it is
defective or not
(Before replacement of compressor, replace PCB and
conduct the replacement of compressor during
compressor replacement)

can occur when the surrounding

Led Times

2

6

5

7

Since compressor itself can be a

Comp Off Time

1min

6min

2min 30sec

20sec

- IPM fault Trip
chance that it is caused by sub PCB’s part defect.

Replace sub PCB since there is high

- 19 -

5. CIRCUIT DIAGRAM

- 20 -

6. TROUBLESHOOTING

6-1 Error Code Summary

WARNING: When you check the Resistance values,

be sure to turn off the power.
And wait for the voltage-discharge sufficiently.

NOTE) 3 hours before the error : Press the Ice Plus button and Freezer button simultaneously

3 hours after the error : All errors, except for "Er rt", "Er SS",
"Er IS(except for Icing sensor)", "Er gF", "Er It" error, are displayed.
"Er IS" which is displayed without input of user is the error of Icing Sensor.

NO

Error Detection

Category

1 Normality None Normal operation of Display

Freezer Sensor

2

3

4

5

6

7

8

9

Error

Refrigerator

Sensor Error

Defrosting

Sensor Error

Icing Sensor

Error

Pantry sensor

error

Room Temp

Sensor Error

Ice maker kit

defect

Flow

Meter(Sensor)

Defect

Temperature

Error Display

Freezer

Temperature

Er FS

Er rS

Er dS

Er IS

Er SS

Er rt

Er It

Er gF

Freezer

Error Generation Factors

Short or Disconnection

of Freezer Sensor

Short or Disconnection

of Refrigerator Sensor

Short or Disconnection

of Defrosting Sensor

Short or disconnection of

the sensor about Ice maker

(Icing sensor, Ice maker

sensor)

Short or Disconnection

of Pantry Sensor

Short or Disconnectoin of

Room temp.sensor

Other Electric system error
such as moter, gear, Hall IC,
operation circuit within I/M kit

Error of flow meter or water
input or low water pressure

Remark

Check each sensor and its

connector.

When the ice does not drop

even when the I/M Test S/W

is pressed

(same as model applied

Twisting Ice Maker before)

Error of flow meter or water

input or low water pressure or

flow meter connection

10 Poor Defrosting Er dH

11

12

13

14

15

Abnormality of

BLDC FAN Motor

for Ice Making

Abnormality of

BLDC FAN Motor

for Freezer

Abnormality of

BLDC FAN

MOTOR For

Refrigerator

Abnormality of

BLDC FAN Motor

for Mechanic

Room

Communication

Error

Er IF

Er FF

Er rF

Er CF

Er CO

Even though it is passed

1 hour since then Defrosting,

if Defrosting sensor is not

over 46°F(8°C), it is caused

It is caused when feedback

signal isn’t over 65 seconds

during BLDC FAN motor

operating

It is caused when feedback

signal isn’t over 65 seconds

during BLDC FAN motor

operating

It is caused when feedback

signal isn’t over 65 seconds

during BLDC FAN motor

operating

It is caused when feedback

signal isn’t over 65 seconds

during BLDC FAN motor

operating

Communication Error

between Micom of Main PCB

and Display Micom

- 21 -

Temperature Fuse

Disconnection, Heater

disconnection, DRAIN Jam,

Poor Relay for Heater

Poor BLDC Motor connection,

DRIVE IC, and TR

Poor BLDC Motor connection,

DRIVE IC, and TR

Poor BLDC Motor connection,

DRIVE IC, and TR

Poor BLDC Motor connection,

DRIVE IC, and TR

Poor Communication

connection,Poor TR of

Transmitter and Receiver

Tx/Rx between display and

main board.

7. PCB Picture

7-1 Main PCB

P/No & MFG

EBR67348001

(2010.02~)

Picture

CON3

CON4

CON2

CON5

CON8

CON1

- 22 -

7-2 Display PCB & Sub PCB

P/No

Display PCB

EBR67357901

(2010.02~)

Picture

Sub PCB

EBR60070707

(2010.02~)

CON101CON102CON103

CON3 CON1

CON2

- 23 -

8. Troubleshooting With Error Display

8-1 Freezer Sensor Error (Er FS)

No

1

2

Checking flow

Check for a loose connection.

Check the Blue/White to
Blue/White.

<CON4>

Result & SVC Action

Result SVC Action

0

-22°F / -30°C

-13°F / -25°C

-4°F / -20°C

5°F / -15°C

14°F / -10°C

Short

Open

Normal

<Temperature table-1>

(1) To (2)

Change the sensor

Replace the refrigerator

Check the Temp and

resistance (Table-1)

Result

40.5 ~ 38.5

30.5 ~ 28.5

23 ~ 21.5

17.5 ~ 16.5

13.5 ~ 12.5

23°F / -5°C

32°F / 0°C

The sensor is determined by
the temperature.

For example, 23 indicates -4°F.

10.5 ~ 9.5

8 ~7.5

- 24 -

8-2 Refrigerator Sensor Error (Er rS)

No

1

2

Checking flow

Check for a loose connection.

Check the White to White.

<CON4>

Result & SVC Action

Result SVC Action

0

Temperature

23°F / -5°C

32°F / 0°C

41°F / 5°C

50°F / 10°C

59°F / 15°C

Short

Open

Normal

<Temperature table-2>

Change the sensor

Replace the refrigerator

Check the Temp and

resistance (Table-2)

Result

38.5 ~ 36.5

30.5 ~ 29.5

24.5 ~ 23.5

20 ~ 19

16 ~15.5

The sensor is determined by
the temperature.

For example, 30 indicates 32°F.

- 25 -

8-3 Icing Sensor Error (Er IS)

No

1

2

Checking flow

Check for a loose connection.

Check the Blue to Blue.

Result & SVC Action

Result SVC Action

0

-22°F / -30°C

-13°F / -25°C

-4°F / -20°C

5°F / -15°C

14°F / -10°C

Short

Open

Normal

<Temperature table-1>

(1) To (2)

Change the sensor

Replace the refrigerator

Check the Temp and

resistance (Table-1)

Result

40.5 ~ 38.5

30.5 ~ 28.5

23 ~ 21.5

17.5 ~ 16.5

13.5 ~ 12.5

CON101

<Display>

<CON101>

23°F / -5°C

32°F / 0°C

The sensor is determined by
the temperature.

For example, 23 indicates -4°F.

10.5 ~ 9.5

8 ~7.5

- 26 -

8-4 Defrost Sensor Error (F dS)

No

1

2

Checking flow

Check for a loose connection.

Check the Orange to Orange.

Check the Brown to Brown.

Result & SVC Action

Result SVC Action

0

Temperature

23°F / -5°C

Short

Open

Normal

<Temperature table-3>

Change the sensor

Replace the refrigerator

Check the Temp and

resistance (Table-3)

Result

38.5 ~ 36.5

<CON4>

32°F / 0°C

41°F / 5°C

50°F / 10°C

59°F / 15°C

The sensor is determined by
the temperature.

For example, 23 indicates -4°F.

30.5 ~ 29.5

24.5 ~ 23.5

20 ~ 19

16 ~15.5

- 27 -

8-5 Defrost Heater Error (Er dH)

No

1

2

3 Input Test 3 Mode.

4 Check the Blue to Orange.

Check the Door gasket.

Check the Defrost control part.

(Push the button 3 times)

Checking flow

Fuse

M

Def Heater

Def

Sensor

Result & SVC Action

Part Result SVC Action

Fuse-M

Def

Heater

Def

Sensor

0

34~42

21

Go to the 3

Change Fuse-M

Go to the 3

Change Fuse-M

Go to the 3

Go to the 5

<CON3>

5 Release the test mode.

Push the button 1 times. (Normal)

6 Check the Blue to Orange.

<CON3>

Result

112 ~ 116 V

0 V

Result

0 V

112 ~ 116 V

SVC Action

Go to the 5

Replace Main PCB

SVC Action

Explain to customer

Replace Main PCB

- 28 -

8-6 Freezer Fan Error (Er FF)

No

1

2

Checking flow

Reset the unit and
Input Test 1 Mode.
(Push the button 1 time)

Open the freezer door and Check the air
flow.

While an error code is displayed,
the fan is not working.

Result & SVC Action

Status

No windy

Windy

SVC Action

Go to 3

Go to 4

3 Check the Fan motor.

4 Check the Fan motor voltage.

<CON4>

(1)(2) (3)

Rotate fan using your hand.
It feel sticky, change the motor.
(Cause of ice or rust inside of motor)

Point Result SVC Action

(1) ~ (2)

(2) ~ (3)

Below 9 V

0 or 5 V

Change the PCB

Change the motor

- 29 -

8-7 Icing Fan Error (Er IF)

No

1

2

3 Check the Connector.

Reset the unit and
Input Test 1 Mode.
(Push the button 1 time)

Open the refrigerator door and Check the
air flow.

While an error code is displayed,
the fan is not working.

(Frozen caused the PCB short)

Checking flow

Result & SVC Action

Status

No windy

Windy

Tip
To protect ice short, add wire seal in
connector. We developed new type
connector, so order the new type.

SVC Action

Go to the 3,4

Go to the 5

4 Check the Fan motor.

(Frozen, Lock, ect.)

5 Check the Fan motor voltage.

<CON4>

(1)(2) (3)

407A

(1) ~ (2)

(2) ~ (3)

Wire seal (Silicon)

Part Name Old P/No New P/NoNo

Duct Asm,

Connector

Result SVC Action

Below 9 V

0 or 5 V

5209JA

1044A

Change the PCB

Change the motor

5209JA

1044A

- 30 -

8-8 Condenser Fan Error (Er CF)

No

1

2

3 Check the Fan motor and surrounding. Rotate fan using your hand.

Reset the unit and
Input Test 1 Mode.
(Push the button 1 time)

Check the fan rotating.

While an error code is displayed,
the fan is not working.

Checking flow

Result & SVC Action

Status

No windy

Windy

It feel sticky, change the motor.

SVC Action

Check motor

Go to the 4

4 Check the Fan motor voltage.

<CON4>

(1)(2) (3)

(1) ~ (2)

(2) ~ (3)

Result SVC Action

Below 9 V

0 or 5 V

Change the PCB

Change the motor

- 31 -

8-9 Communication Error (Er CO)

No

1

2

3 Check the Orange to White/Red.

4 Check the White/Black to White/Red.

Check the loose connection.

Check the Red to White/Red.

Checking flow

CON101

<CON101><Display>

CON101

<CON101><Display>

Result & SVC Action

Result

12 V

Other

Result

0 V or 5 V

Other

Result

SVC Action

Go to the 3

Check the Hinge

(loose connection)

Change the Main PCB

SVC Action

Change the Display PCB

Go to the 4

SVC Action

CON101

<CON101><Display>

5 Check the White/Red to Orange.

<CON5>

6 Check the White/Red to White/Black.

<CON5>

0 V or 5 V

Other

Result

0 V or 5 V

Other

Result

0 V or 5 V

Other

Change the Main PCB

Go to the 5

SVC Action

Change the Display PCB

Go to the 6

SVC Action

Change the Main PCB

Explain to customer

- 32 -

9. Troubleshooting Without Error Display

9-1 Cube mode doesn’t work

No

1

2

3 Check the Red to White Red.

Check the loose connection.

Check the Black to White.
(While pushing the lever S/W)

Check the Red to White Red.
(While pushing the lever S/W)

(While pushing the lever S/W)

Checking flow

<CON2>

Result & SVC Action

Lever s/w Result SVC Action

Pushing

Not

pushing

Lever s/w Result SVC Action

Pushing

Not

pushing

112 ~ 115 V

Other

0 ~2 V

Other

9 ~ 12 V

Other

0 ~2 V

Other

Go to the 3

Change PCB

Go to the 3

Change PCB

Go to the 4

Change PCB

Go to the 4

Change PCB

4 Check the resistance value.

<Ice Maker>

(2)(1)

<CON1><CON3>

Point Result SVC Action

Explain

Replace

Geared Motor

Explain

Replace

Geared Motor

(3)

(4)

(1) to (2)

(3) to (4)

31.1 ~ 42.1

Other

9.9 ~ 12.1

Other

<Geared Motor> <Dispenser Motor>

- 33 -

9-2 Crush mode doesn’t work

No

1

2

3 Check the Red to White Red.

Check the loose connection.

Check the Sky Blue to White.
(While pushing the lever S/W)

(While pushing the lever S/W)

Checking flow

<CON2>

Result & SVC Action

Lever s/w Result SVC Action

Pushing

Not

pushing

Lever s/w Result SVC Action

Pushing

Not

pushing

<CON1><CON3>

112 ~ 115 V

Other

0 ~2 V

Other

9 ~ 12 V

Other

0 ~2 V

Other

Go to the 3

Change PCB

Go to the 3

Change PCB

Go to the 4

Change PCB

Go to the 4

Change PCB

4 Check the resistance value.

<Ice Maker>

(2)(1)

<Dispenser Motor><Geared Motor>

(3)

(4)

Point Result SVC Action

Explain

Replace

Geared Motor

Explain

Replace

Geared Motor

(1) to (2)

(3) to (4)

31.1 ~ 42.1

Other

9.9 ~ 12.1

Other

- 34 -

9-3 Water mode doesn’t work

No

1

2

3 Check the Blue to Gray.

Check the loose connection.

Check the Purple to White.
(While pushing the lever S/W)

(While pushing the lever S/W)

Checking flow

<CON2>

Result & SVC Action

Lever s/w Result SVC Action

Pushing

Not

pushing

Lever s/w Result SVC Action

Pushing

Not

pushing

112 ~ 115 V

Other

0 ~2 V

Other

112 ~ 115 V

Other

0 ~2 V

Other

Go to the 3

Change PCB

Go to the 3

Change PCB

Go to the 4

Change PCB

Go to the 4

Change PCB

<CON3>

4 Check the resistance value.

(1) (2) (3) (4)

Dispenser Ice Maker

<Pilot Valve>

Machine Room

<Water Valve>

In door

Point Result SVC Action

Explain

Replace

Water Valve

Explain

Replace

Water Valve

(1) to (2)

(3) to (4)

360 ~ 420

Other

360 ~ 420

Other

- 35 -

9-4 Freezer room AC Bulb Lamp doesn’t work

No

1

2 Check the door S/W resistance.

3 Check the Yellow Blue to Sky blue.

Check the Freezer door switch. If feel sticky, Change the door s/w.

Checking flow

Result & SVC Action

Status Result SVC Action

Normal

Push

S/W

Status Result SVC Action

Closed

0

Infinity

Infinity

0

5 V

Other

Go to the 3

Change door S/W

Go to the 3

Change door S/W

Go to the 4

Change the Door S/W

4 Check the Blue to Black. Check the Blue to Black.

<CON4>

<CON3>

Open

Status Result SVC Action

Closed

Open

0 V

Other

0 ~ 2 V

Other

115 V

Other

Go to the 4

Change the Door S/W

Explain to customer

Change the Main PCB

Change the F Lamp

Change the PCB

- 36 -

9-5 Refrigerator room lamp doesn’t work

No

1

2 Check the door S/W resistance.

3 Check the Black to Gray White.

Check the Refrigerator door switch. If feel sticky, Change the door s/w.

Checking flow

Result & SVC Action

Status Result SVC Action

Normal

Push

S/W

Status Result SVC Action

Normal

0

Infinity

Infinity

0

12 V

Other

Go to the 3

Change door S/W

Go to the 3

Change door S/W

Go to the 4

Change the PCB

4 Check the Red to Black.

5 Check the Black to White.

<CON4>

- 37 -

Status Result SVC Action

Normal

Status Result SVC Action

Closed

Open

12 V

Other

0 ~ 2 V

Other

12 V

Other

Go to the 5

Change the LED Lamp

Explain to customer

Change the Door S/W

Explain to customer

Change the LED Lamp

9-6 Poor cooling in Fresh food section

No

1

2 Reset the unit and

Check the sensor resistance.

The sensor is determined by
the temperature.

For example, 30 indicates 32°F.

Input Test 1 Mode.
(Push the button 1 time)

Checking flow

<CON4>

Result & SVC Action

Temperature

23°F / -5°C

32°F / 0°C

41°F / 5°C

50°F / 10°C

59°F / 15°C

Result

38.5 ~ 36.5

30.5 ~ 29.5

24.5 ~ 23.5

20 ~ 19

16 ~15.5

3 Open the fresh food door and

Check the air flow.

4 Check the air temperature.

Cold or not?

- 38 -

Status

Windy

No windy

Status

Cold

Not cold

SVC Action

Go to the 4

Check the R Fan motor

Check the damper

(Go to the 6)

SVC Action

Explain to customer

Check the Compressor

And sealed system

No

Checking flow

Result & SVC Action

5

6 Check the Fan motor.

Damper checking method.
Inputting TEST Mode,
Check the damper and PCB.

(1)(3)

(2)

Rotate fan using your hand.
It feel sticky, change the motor.
(Cause of ice or rust inside of motor)

(4)

Test

Mode

1 Mode

2 Mode

1,2

mode

Point Result SVC Action

(1) to (2)

(3) to (4)

Point Result SVC Action

Damper

State

Open

Closed

Not

working

270 ~330

Other

270 ~330

Other

StickyMotor Change the motor

SVC Action

Damper is normal.

(Check the Damper)

Change the damper

It’s normal

Change damper

It’s normal

Change damper

7 Check the F Fan motor voltage.

<CON4>

(1)(2) (3)

- 39 -

Point Result SVC Action

(1) ~ (2)

(2) ~ (3)

Below 12 V

0 or 5 V

Change the PCB

Change the motor

9-7 Poor cooling in Freezer compratment

No

1

2 Reset the unit and input Test 1 Mode.

Check the sensor resistance.

The sensor is determined by
the temperature.

For example, 23 indicates -4°F.

(Push the button 1 time)

Checking flow

<CON4>

Result & SVC Action

(1) To (2)

-22°F / -30°C

-13°F / -25°C

-4°F / -20°C

5°F / -15°C

14°F / -10°C

23°F / -5°C

32°F / 0°C

Result

40.5 ~ 38.5

30.5 ~ 28.5

23 ~ 21.5

17.5 ~ 16.5

13.5 ~ 12.5

10.5 ~ 9.5

8 ~7.5

3 Open the freezer door and check the air

flow.

4 Check the air temperature.

Cold or not ?

Status

Windy

No windy

Status

Cold

Not cold

SVC Action

Go to the 4

Check the F Fan motor

SVC Action

Explain to customer

Check the Compressor

And sealed system

- 40 -

9-8 Over cooling in Fresh food compartment

No

1

2 Reset the unit and

3 Open the refrigerator door and

Check the sensor resistance.

The sensor is determined by
the temperature.

For example, 30 indicates 32°F.

Input Test 1 Mode.
(Push the button 1 time)

Check the air flow.

Checking flow

<CON4>

Result & SVC Action

Temperature

23°F / -5°C

32°F / 0°C

41°F / 5°C

50°F / 10°C

59°F / 15°C

Status

Windy

Result

38.5 ~ 36.5

30.5 ~ 29.5

24.5 ~ 23.5

20 ~ 19

16 ~15.5

SVC Action

Go to the 4

4 Input Test 2 Mode and

Check the air flow.
(Push the button 1 time)

5 Check the damper resistance.

(2)

(1)(3)

(4)

Check the R Fan

No windy

Status

Windy

No windy

Point Result SVC Action

270 ~330

(1) to (2)

270 ~330

(3) to (4)

Check the damper

(Go to the 5)

SVC Action

Go to the 5

It’s normal

Other

Other

It’s normal

Change damper

It’s normal

Change damper

- 41 -

10. Reference

10-1 TEST MODE and Removing TPA

1. How to make TEST MODE
If you push the test button on the Main PCB, the refrigerator will be enter the TEST MODE.

1 time : Comp / Damper / All FAN on

*

2 times : Damper closed

*

(All things displayed)

(22 22 displayed)

Main PWB

2. How to remove Terminal Position Assurance (TPA)

<AC TPA> <DC TPA>

After measure the values, you should put in the TPA again.

3 times : Forced defrost mode

*

(33 33 displayed)

- 42 -

10-2 TEMPERATRUE CHART - FRZ AND ICING SENSOR

TEMP

-39°F (-40°C)

-30°F (-35°C)

-21°F (-30°C)

-13°F (-25°C)

-4°F (-20°C)

5°F (-15°C)

14°F (-10°C)

23°F (-5°C)

32°F (0°C)

41°F (5°C)

RESISTANCE

73.29

53.63

39.66

29.62

22.33

16.99

13.05

10.10

7.88

6.19

VOLTAGE

4.09 V

3.84 V

3.55 V

3.23 V

2.89 V

2.56 V

2.23 V

1.92 V

1.63 V

1.38 V

50°F (10°C)

59°F (15°C)

68°F (20°C)

77°F (25°C)

86°F (30°C)

95°F (35°C)

104°F (40°C)

4.91

3.91

3.14

2.54

2.07

1.69

1.39

1.16 V

0.97 V

0.81 V

0.67 V

0.56 V

0.47 V

0.39 V

- 43 -

10-3 TEMPERATRUE CHART - REF AND DEF SENSOR

TEMP

-39°F (-40°C)

-30°F (-35°C)

-21°F (-30°C)

-13°F (-25°C)

-4°F (-20°C)

5°F (-15°C)

14°F (-10°C)

23°F (-5°C)

32°F (0°C)

41°F (5°C)

RESISTANCE

225.1

169.8

129.3

99.30

76.96

60.13

47.34

37.55

30

24.13

VOLTAGE

4.48 V

4.33 V

4.16 V

3.95 V

3.734 V

3.487 V

3.22 V

2.95 V

2.67 V

2.40 V

50°F (10°C)

59°F (15°C)

68°F (20°C)

77°F (25°C)

86°F (30°C)

95°F (35°C)

104°F (40°C)

19.53

15.91

13.03

10.74

8.89

7.40

6.20

2.14 V

1.89 V

1.64 V

1.45 V

1.27 V

1.10 V

0.96 V

- 44 -

10-4 How to check the Fan-Error

No signal Error Display

15s

10s

15s

10s

15s

Normal drive

No signal Repeat

20s

10s

15s

10s Pause 30min

Pause 30min

10s

15s 20s

(1) EBR673480

After sending a signal to the fan, the MICOM checks the BLDC fan
motor s lock status. If there is no feedback signal from the BLDC fan,
the fan motor stops for 10 seconds and then is powered again for 15
seconds. To determine that there is a fan motor malfunction,
this process is repeated 3 times. If the fan motor is determined to be
defective, the error code will be shown in the display for 30 minutes.
At this point, the process will be repeated until the fan motor operates
normally. If normal operation is achieved, the error display is erased and
the MICOM is reset automatically.

- 45 -

Compressor Troubleshooting

Step 1) Loosen up screw of Case Assembly PCB and open

the Cover PCB

Step 2) Check for blinking frequency of LED, PWB

If compressor is normal, it does not blink

: Refer to the next page to find out what actions to take according to how many times LED blink

- 46 -

Actions to take according to Led blinking frequency

No LED operating condition Cause Service guideline

1. Please check, Whether
connector of
compressor is attached
rightly or not. after
power off

2. After the first action,
You check on normal
operation of
compressor.

3. If the same symptom
arises after the second
action, replace PCB

1. After resetting power,
check if it is running
normal

2. If the same symptom
arises after the first
action

3. If the same symptom
arises after the second
action, replace
compressor

LED two - time repetiton (Stroke Trip)

1

on - on - off - on - on - off - on - on - off repeating

LED four - time repetiton (Overload Protect)

2

on - on - on - on - off - on - on - on - on - off repeating

PCB Parts
defect or
Compress
or
Connector
miss
connecting
(Piston
over run)

Outlet
clogging

LED five - time repetiton (Piston Lock Trip)

3

on - on - on - on - on - off - on - on - on - on - on - off repeating

LED six - time repetiton (Current Trip)

4

on

-

on

-

on - on - on - on

LED seven- time repetiton (IPM Fault Trip)

5

on - on - on - on - on - on - on - off - on - on -on - on - on - on- on - off repeating

- off -

on - on - on - on - on - on

- off

repeating

Piston
constraint

Circuit
over
current
error
Or cycle
error

PCB parts
defect
(IPM)

1. After resetting power,
check if it is running
normal

2. If the same symptom
arises after the first
action

3. If the same symptom
arises after the second
action, replace
compressor

1. After resetting power,
check if it is running
normal

2. If the same symptom
arises after the first
action

3. If the same symptom
arises after the second
action, replace
compressor

1. After resetting power,
check if it is running
normal

2. If the same symptom
arises after the first
action, replace PCB

- 47 -

11. COMPONENT TESTING INFORMATION

11-1 Defrost Controller Assembly

Function - Controller assembly is consist of 2 kinds of part those are fuse-m and sensor. we can

decide part is defect or not when we check the resistance.

- Fuse-m can cut off the source when defrost heater operate the unusual high temperature.

- Sensor give temperature information to Micom

How to
Measure
(Fuse-M)

How to
Measure
(Sensor)

(1) to (2)

(1) to (2)

Set a ohmmeter to the 2 housing pin.
Measure the 2 pin connected to Fuse-M.
If the ohmmeter indicate below 0.1ohm
fuse-m is a good condition, But infinitely
great ohm Fuse-M is disconnection

Set a ohmmeter to The 2housing pin.
Measure the 2 pin connected to Sensor.
If the ohmmeter indicate 11
temperature) Sensor is not a defect.
When check the ohm at other temperature
Check the sensor manual.

(at room

Standard

Fuse-M (at all temperature)

Test Point

(1) to (2)

Ressult

0 ~ 0.1

- 48 -

Sensor (at room temperature)

Test Point

(1) to (2)

Ressult

11

11-2 Sheath Heater

Function Sheath heater is a part for defrost. All heating wire is connected to only one line. So we can

decide part is defect or not when we check the resistance.

How to
Measure

(1) (2)

Set a ohmmeter connect to The 2 housing pin.
Measure the 2 pin connected to Sheath Heater.
If the ohmmeter indicate (V°øV)/Watt=R is good condition,
ex) when watt=350w, voltage=115v R=(115°ø115)/350=38
But the ohmmeter indicate infinitely great
Sheath heater is disconnection

Standard

Sheath heater (at all temperature)

Test Point

(1) to (2)

Ressult

34 ~ 42

- 49 -

11-3 Door Heater Assembly

1

2

3

5

8

9

4

6

7

Function The heater is designed to prevent the raising dew from door.

How to
Measure

Standard

Test Point

(1) to (2)

Ressult

2.3 ~ 2.9

- 50 -

11-4 Door Switch

Function The switch sense if the door open or close.

-When the door open, lamp on.

-When the door open, the switch give information to Micom.
When the door open, internal contact operate on and off moving plunger of door switch up
and down.

How to
Measure

<Switch, Freezer> <Switch, Refrigerator>

Button

(Plunger)

1

2 3 4

3 4 2 1

1 2 3 4

Standard

Beep Beep

Check the resistance between connectors 1, 2 and 3, 4 .It means
check whether or not applying an electric current. If there is
resistance, it means the switch not inferiority

Multimeter beep – Switch F,R

Nomal

Beep or 0

Push the button(Plunger)

None (

- 51 -

11-5 Dispenser DC Motor

Function - Dispenser DC Motor : When customer push the dispenser button, Pull duct door and

abstract from ice bank.

How to
Measure

(1)

(2)

Dispensor DC Motor

Standard

Dispenser DC Motor

Test Points

(1) to (2)

Result

9.9 ~ 12.1

- 52 -

11-6 AC Motor ASSEMBLY

Function The In-door motor of AC motor assembly pushes ices to the dispenser.

How to
Measure

< In-door Motor > < In-door Motor >

Take out the male

1

housing from
female housing

Measure the

2

resistance between
(1) and (2)

(1)

(2)

(1)

(3)

Take out the male

1

housing from
female housing

Measure the

2

resistance between
(1) and (3)

Standard

Check the resistance between connectors (In-door motor 1, 2) and
(In-door motor 1, 3). It means check whether or not applying an
Electric current. If there is resistance, it means the geared motor or
solenoid is not inferiority

Geared Motor

Test Points

(1) to (2)

Result

31.1 ~ 42.09

Test Points

Cube Solenoid

(1) to (3)

- 53 -

Result

31.1 ~ 42.09

11-7 Damper

Function The damper supplies the cold air at freezer room to chillroom

by using the damper’s plate. Chillroom is colder than before
when damper’s plate is open. When damper’s plate is close,
chillroom’s temperature will rise.

How to
Measure

< Damper Circuit >

Blue

1

Red

2

White

3

Yellow

3

Check the ,

Check the resistance between connectors 1,3 and 2,4 .It means
check whether or not applying an electric current. If there is
resistance, it means the damper not inferiority

2 4

Check the ,

Blue

1

3

Check the ,

< extension >

1 3

1 3

White

Standard

Damper

Test Points

Red and Yellow

Result

373 ~ 456

- 54 -

Test Points

Blue and White

Result

373 ~ 456

11-8 Lamp Socket

Function

How to
Measure

The lamp socket connect cover lamp assembly to lamp.
The lamp socket fix lamp and unite lamp and cover lamp assembly.
The lamp socket supply electric source to lamp also.

(1) (2)

Standard

(3) (4)

Check the resistance between connector of housing and connector of lamp socket. It means
check whether or not applying an electric current.
If there is resistance it means the lamp socket is not inferiority.

Test Points

(1) to (2) and (3) to (4)

Result

0

- 55 -

11-9 Flow Sensor

Function

How to
Measure

Flow Sensor (in machine room)
Count the water quantity from city water to water filter in refrigerator

Flow Sensor

(in machine room)

Standard

Test Points

Red wire to Black wire

Result

4 ~ 30

- 56 -

12. TROUBLESHOOTING

FC75LANE



!

"

12-1 INFORMATION OF LINEAR COMPRESSOR

The information tag provides compressor model, refrigerant, serial number and safety approval

Compressor Label

1. Compressor Model

F C 7 5 L A N E

Series name
DLF/FA/FB

Displacement
ex)90=9.0 /stroke

Application Category

-L: LBP with R134a

-H: HBP with R134a

-N: LBP with R600a

Efficiency version
A:1
B:2ndgeneration

Operating Type
A:A-Inverter
E:E-Inverter

Rated Voltage
& Frequency

-M : 220V 50/60Hz

-N : 115V 50/60Hz

st

generation

Name Plate

2. Refrigerant

3. Serial Number

Buyer Code

Model Code

Size : 90mm X 20mm

Line

4. Safety Approval

There are two types of controllers used in the linear compressor system.

- The “E”-inverter system is used with the FC75LANE compressor.

- The “A”-inverter system is used with the FC90LANA compressor.

FC75LANE

E-Inverter

Refrigerator

Comp On/Off

Comp Drive

Inverter

CVCF

System

00 00 9 2003 5 13 0012

Month

1: January O : October

~

9: September D : December

Year

Ex)

Compressor

Self

Modulation

Serial No.

Date

N : November

FC90LANA

A-Inverter

System

Controls the

algorithm

according to

various

conditions

Inverter

VVVF

Stroke

Modulation

*VVVF : Variable Voltage Variable Frequency

**CVCF : Constant Voltage Constant Frequency

- 57 -

To reduce noise level, the piston stroke is slowly increased to full power during start up.

Step 1) Start up - Half stroke interval for first 1 second.
Step 2) Ramp up - Stroke increases every 0.8sec until

Step 3) CVCF interval - 180V / 60Hz

maximum stroke length is reached
(about 1 min)

Step 1) Start up - Half stroke interval for first 20

Step 2) Ramp up - Stroke increases until maximum

Step 3) VVVF interval - target voltage and frequency

seconds.

stroke length is reached (about 1 min, 40 sec)

controlled by Control Board signals

There are 6 protection logics designed to protect the linear compressor system. When a failure is detected,
the compressor will shut and will try to restart after a set period of time for each type of failure. The LED
located on the inverter drive PCB will flash the appropriate code to indicate the detected failure. This code will
continue to flash until the unit is disconnected from the power source.

Inverter Error Codes

The number of

LED flashes

1

2

5

6

7

8

FCT0

Stroke Trip

Locked Piston

Trip

Current Trip

IPM Fault

Communication

Error

App.

A-Inv.

E-Inv.
A-Inv.

E-Inv.
A-Inv.

E-Inv.
A-Inv.

E-Inv.
A-Inv.

A-Inv.

Requirement

Compressor current and voltage error.

Piston stroke overrun detected.

Piston is locked.

Current overload detected.

High current detected due to IPM failure.

Miscommunication with Refrigerator

Waiting Time

20 sec.

1 min.

2 min. 30 sec.

6 min.

20 sec.

0

- 58 -

Bridge Diodes converts 115V AC (Alternating current) to 115V DC (Direct current)
The Voltage Multiplying circuit then increases the 115V DC to 230V DC.
Then the IPM (Intelligent Power Module) converts the 230V DC to 230V AC.
The converted AC power can be regulated to any required voltage and frequency.

E-Inverter

FC75LANE

There is a PCB located in the PCB case next to the
compressor. That is the driver PCB, the linear
compressor.

A-Inverter

FC90LANA

Measure the voltage at locations on the connector (as shown picture) with a multi-tester.

Multi

Tester

E-Inverter

IPM Voltage Check

To ensure proper diagnosis, make sure that the unit

Multi

Tester

has been plugged in for at least 10 min.
To determine if the compressor is receiving the
proper voltage, check the PCB output voltage
during operation.

A-Inverter

Normal operating voltage will be between 80V AC
and 180V AC.

Note : Higher voltage readings may occur under

“heavy” load conditions.

- 59 -

Insulation check : Check for infinite Ohms between all compressor terminal and ground.

GN

GND

FC90LANA

Capacitor Spec.

450V/18uF 5%

Po N/C

Co

Po : Power

Co : Common

N/C : No Connecting

Compressor Winding Resistance Check

6 ~ 8

Ω

Between Po and Co

FC75LANE

Capacitor Spec.

550V/10uF 5%

Po N/C

Co

Po : Power

Co : Common

N/C : No Connecting

Compressor Winding Resistance Check

6 ~ 8

Ω

Between Po and Co

LG Linear Compressor

6 ~ 8

Ω

NOTE : Any Terminal to Ground should

read Inf ( ~ )

Inf (~)

6 ~ 8 ΩInf (~)

- 60 -

12-2 SERVICE DIAGNOSIS CHART

COMPLAINT

No Cooling.

Cools poorly.

Food in the
Refrigerator
is frozen.

Condensation
or ice forms
inside the unit.

Condensation
forms in the
Exterior Case.

There is
abnormal noise.

Door does not
close well.

Ice and foods
smell
unpleasant.

POINTS TO BE CHECKED REMEDY

• Is the power cord unplugged from the outlet?

• Check if the power switch is set to OFF.

• Check if the fuse of the power switch is shorted.

• Measure the voltage of the power outlet.

• Check if the unit is placed too close to the wall.

• Check if the unit is placed too close to the stove,
gas cooker, or in direct sunlight.

• Is the ambient temperature too high or the room
door closed?

• Check if food put in the refrigerator is hot.

• Did you open the door of the unit too often or
check if the door is sealed properly?

• Check if the Control is set to Warm position.

• Is food placed in the cooling air outlet?

• Check if the control is set to colder position.

• Is the ambient temperature below 41°F(5°C)?

• Is liquid food sealed?

• Check if food put in the refrigerator is hot.

• Did you open the door of the unit too often or
check if the door is sealed properly?

• Check if the ambient temperature and humidity of
the surrounding air are high.

• Is there a gap in the door gasket?

• Is the unit positioned in a firm and even place?

• Are any unnecessary objects placed in the back
side of the unit?

• Check if the Drip Tray is not firmly fixed.

• Check if the cover of the compressor enclosure in
the lower front side is taken out.

• Check if the door gasket is dirty with an item like
juice.

• Is the refrigerator level?

• Is there too much food in the refrigerator?

• Check if the inside of the unit is dirty.

• Are foods with a strong odor unwrapped?

• The unit smells of plastic.

• Plug into the outlet.

• Set the switch to ON.

• Replace the fuse.

• If the voltage is low, correct the wiring.

• Place the unit about 4 inches (10 cm) from
the wall.

• Place the unit away from these heat sources.

• Lower the ambient temperature.

• Put in foods after they have cooled down.

• Don't open the door too often and close it
firmly.

• Set the control to Recommended position.

• Place foods in the high-temperature section.
(front part)

• Set the control to Recommended position.

• Set the control to Warm position.

• Seal liquid foods with wrap.

• Put in foods after they have cooled down.

• Don't open the door too often and close it
firmly.

• Wipe moisture with a dry cloth. It will
disappear in low temperature and humidity.

• Fill up the gap.

• Adjust the Leveling Screw, and position the
refrigerator in a firm place.

• Remove the objects.

• Fix the Drip Tray firmly in the original position.

• Place the cover in its original position.

• Clean the door gasket.

• Position in a firm place and level the Leveling
Screw.

• Make sure food stored in shelves does not
prevent the door from closing.

• Clean the inside of the unit.

• Wrap foods that have a strong odor.

• New products smell of plastic, but this will go
away after 1-2 weeks.

Other possible problems:

Check if frost forms
in the freezer.

Check the
refrigeration system.

Check the
Thermistor.

Not
defrosting

The system
is faulty.

The operation of the
Thermistor is incorrect.

- 61 -

Check Components of
the defrosting circuit.

Perform sealed
system repair.

Replace the
Thermistor.

12-3 REFRIGERATION CYCLE

Troubleshooting Chart

CAUSE REMARKS

PARTIAL
LEAKAGE

LEAKAGE

COMPLETE
LEAKAGE

CLOGGED BY DUST

PARTIAL
CLOG

WHOLE
CLOG

MOISTURE CLOG Cooling operation

STATE OF

THE UNIT

Freezer
compartment and
Refrigerator don't
cool normally.

Freezer
compartment and
Refrigerator don't
cool normally.

Freezer
compartment and
Refrigerator don't
cool normally.

Freezer
compartment and
Refrigerator don't
cool.

stops periodically.

STATE OF THE
EVAPORATOR

Low flowing sound of
Refrigerant is heard
and frost forms in
inlet only.

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

Flowing sound of
refrigerant is heard
and frost forms in
inlet only.

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

Flowing sound of
refrigerant is not
heard and frost melts.

TEMPERATURE

OF THE

COMPRESSOR

A little higher than
ambient
temperature.

Equal to ambient
temperature.

A little higher than
ambient
temperature.

Equal to ambient
temperature.

Lower than ambient
temperature.

• Refrigerant level is low due
to a leak.

• Normal cooling is possible by
restoring the normal amount
of refrigerant and repairing
the leak.

• No discharging of
Refrigerant.

• Normal cooling is possible by
restoring the normal amount
of refrigerant and repairing
the leak.

• Normal discharging of the
refrigerant.

• The capillary tube is faulty.

• Normal discharging of the
Refrigerant.

• Cooling operation restarts
when heating the inlet of the
capillary tube.

COMP-

COMPRESSION

RESSION

DEFECTIVE

NO COMP­RESSION

Freezer and
Refrigerator don't
cool.

No compressing
operation.

Low flowing sound of
refrigerant is heard
and frost forms in
inlet only.

Flowing sound of
refrigerant is not
heard and there is
no frost.

A little higher than
ambient
temperature.

Equal to ambient
temperature.

• Low pressure at high side of
compressor due to low
refrigerant level.

• No pressure in the high
pressure part of the
compressor.

12-3-1 Cleaning

There is no need for routine condenser cleaning in normal Home operating environments. If the environment is
particularly greasy or dusty, or there is significant pet traffic in the home, the condenser should be cleaned
every 2 to 3 months to ensure maximum efficiency.

If you need to clean the condenser:

Remove the mechanical cover.
Use a vacuum cleaner with a soft brush to clean the grille, the open areas behind the grille and the front
surface area of the condenser.
Replace the mechanical cover.

- 62 -

12-3-2 SEALED SYSTEM DIAGNOSIS

All components operating, No airflow problems, Not frosted up as a defrost

problem has been isolated to sealed system area

“Not Cooling” Complaint

problem

Very Fast

Inefficient

Compressor

Partial

Equalization

Test

Fast

Condenser

Temperature

Hotter than Normal

Room Temperature

Very Slow

Partial

Restriction

Frost

Pattern?

None

Equalization

Test

Very Slow

Very Fast

Complete

Restriction

Cap Tube

Sound

Faint

None to Weak

Air/Low Side

Leak

Trace of Oil

Yes

No

Leak

Undercharge

(The equalization test is trying to restart a compressor using a start kit after it has been operating.)

Loss of Change

Compressor Not

Pumping

- 63 -

13. ICEMAKER OPERATING METHOD AND TROUBLE SHOOTING

13-1 Icemaker’s Basic Operating Method

Power OnPower On

Start Position

Icemaking

Mode

Full Ice

Check

Full Ice?

Harvest

Mode

Fill

Test Mode

• Adjusts Ice Tray to Start Position with power on.• Adjusts Ice Tray to Start Position with power on.

•Waits until water becomes ice.
For cold air circulation, Ice tray will be
on a slightly tilt one hour after
ice-making mode begins. Atilt ice tray
means icemaker’s normal operation.

Ice Tray on a slightly tilt

• If water becomes ices in the ice tray, Ice-detecting
sensor check if the ice bin is full.

• Twist the ice tray to drop ice into the ICE BIN.

• Supply water to the ice tray by operating the solenoid
valve.

• To force water to supply to the ice tray, or check
icemaker’s condition press and hold the FILL Key for
about 3seconds.
In the test mode, The icemaker will run through 3
stages step by step
: Harvest Fill water Ice making

To reset the icemaker’s operation, set the power switch OFF position and back it to ON position.

Power
Switch

Ice Tray

Ice-detecting sensor

Icemaker Unit

- 64 -

13-2 ICE MAKER FUNCTIONS

13-2-1 Icemaking Mode

1. Icemaking Mode begins right after the ice tray fills with water.

2. Icemaker waits until water becomes ice in the ice tray.

Ice-detecting sensor checks if the ice bin is full every 2min.

13-2-2 Harvest Mode

At least in 110min, since icemaker begun icemaking mode, Icemaker starts to twist the ice tray to drop ices into the Ice bin.
(After installation, at least 1day is needed to make ices)

If the icemaker never drop ices to the ice bin though water becomes ices in the ice tray, check the real temperature of
compartment. (not temperature on display)
Icemaker needs below 0°F to drop ices to ice bin.

13-2-3 Fill/Park Position

Once the normal harvest mode has been completed, the water solenoid will be activated.

13-3 Trouble Shooting Ice & Water system Issues

13-3-1 Icemaker not making ice or not making enough ice (Environmental Diagnosis)

Icemaker can’t make ices itself. Basically, water, temperature and time are needed.

- Water : If no Water, then no Ice.

- Temperature : The compartment, where the icemaker is located, has to be at least 1°F so that icemaker dumps ices to
the bin.

- Time : At least 80 minutes must be passed to make one series of ices after water comes into icemaker.

Test Mode should not be carried out before checking below.

Not making ice

Water

Is Icemaker’s tray filled
with water or Ice?

Temperature

Is measured
temperature below 10°F
in the icemaker
compartment

Time

How long has customer
waited for icemaker to
make ices?

Yes

Yes

1. Is saddle valve turned on?

2. Is the icemaker fill tube frozen?

No

No

No

If the issue haven’t resolved yet, though you have checked all the items above, go to next step.

resistance.

3. Are water valve housings are connected properly?

connection.

4. Water line kinked or damaged?

5. Is water filter too old?

1. Does cold air come out from air vent normally?

2. Are the R & F room cold enough?
at the back.

3. Does icemaker compartment door close tightly?

1. At least 120min. must be passed to make ices after water comes into icemaker.

2. At least 24 hours must be passed to have ice bin full of ices. (not in case of

installation)

Check saddle valve.

Check the fill tube heater’s electrical

Check all the water valve’

Check if Icing fan is working.
Check if multi duct is blocked.

Measure the temp. and Check gas leakage

- 65 -

13-3-2 Icemaker not making ice or not making enough ice

(Icemaker Unit & Ice-detecting sensor Diagnosis)

Icemaker Unit and Ice-detecting sensor Diagnosis

The icemaker unit and Ice-detecting sensor is programmed to be diagnosed.
Follow the procedure step by step to check to see if icemaker and Ice-detecting sensor is working normally.

Icemaker Unit

Ice-detecting sensor

Fill Key

1

st STEP (Icemaker Unit Diagnosis)

Press the fill key for about 3sec. If the icemaker runs 2 stages of harvest and filling water step by step, It means icemaker’s
mechanism is normal.

Caution : Be sure that the ice tray is not filled with water before pressing fill key.

- 66 -

2

st

STEP (Ice-detecting sensor Diagnosis)

2. Close the left door

(Door switch pushed)

4. Stay opening freezer door

5. Hold pushing

Refrigerator button& Lock

button at the same time

If

ETY is shown on the display after the procedure above, Ice-detecting sensor is normal.

If

FULL is shown on the display after the procedure above, Ice-detecting sensor is abnormal.

ETY = empty

3. Wait for 3min.1. Remove Ice bin from compartment

13-3-3 Icemaker not making ice or not making enough ice (Other Suspected Items)

Strongly suspect items below If the issue remains yet, though all the diagnosis for icemaker has been carried out.

- Cap duct bad sealing

- Defective thermal sensor in the icemaker compartment

- Not cold icemaker compartment area (sealed system)

13-3-4 Not Dispensing Ice

Clogged Ice In the Ice Bin (suspected items)

- Customer haven’t used ice dispenser over a week.
Resolution : the ices gets stuck if customer doesn’t use ice dispenser.
In this case, empty the ice bin and wait until the new ices are stacked in the ice bin.

- Temperature of icemaker compartment is not cold enough.
Resolution : Check ice fan, sealed system, cap duct, vent and other items related to temperature.

- Cap duct doesn’t seal the air properly.
Resolution : Possibly, warm air could get into the compartment and make ices get stuck. Replace the cap duct with
new one.

- In-door geared motor doesn’t work
Resolution : Change the in-door geared motor and test it.

- The water comes out of fill cup and the water get into the ice bin.
Resolution : The water pressure from shutoff valve is too high.
Recommend to use regulator to the customer and close the shutoff valve slightly.

Clogged Ices In the Chute (suspected items)

- Cap duct doesn’t seal the air properly.
Resolution : Possibly, warm air could get into the compartment and make ices get stuck. Replace the cap duct with
new one.

- 67 -

14. DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM

14-1 FUNCTION

14-1-1 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 is initially applied or restored after a power failure, it is set to Control temperature Previously.

3. If you do not press any button after turning on the power, only CRUSH or CUBE Label that has been selected will be
turned on and all other LEDs on the display Panel will be turned off within 60 seconds. (Power Save Mode)

4. If you press a button, only CRUSH, CUBE label and Lock icon that has been selected will be turned on and all other
LEDs on the display Panel will be turned off within 20 seconds. (Power Save Mode)

5. If you do not want to use the Power Save Mode, you can change the Mode by pressing the ICE PLUS Button and
Freezer TEMP button simultaneously for more than 5 seconds.

14-1-2 How to Toggle the Display between °F & °C

1. The initial setting is °F and the display temperature mode can be changed from °F to °C or °C to °F by pressing and
holding the FRZ TEMP and the REF TEMP keys at the same time for over 5 seconds.

14-1-3 Lock function (dispenser and display button lock)

1. When the refrigerator is first turned on, the buttons are not locked.
“LOCK” is deactivated with no light on.

2. To lock the display, the dispenser, and the control panel, press
and hold the LOCK button for 3 seconds. “LOCK” is activated with
“Lock Icon” on.

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.

5. If you don’t hold the Alarm/Lock button more than 3 seconds,
Alarm function will be changed and alarm for opened door will be
on/off same as alarm icon indicating.

Ex) In selecting

"LOCK"

Ex) In selecting

"LOCK" again

14-1-4 Filter condition display function

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

2. Water filter needs replacement once six months or of
using water filter.

3. When the Water Filter Icon blinks, you must exchange
the filter.

4. After replacing the filter, press and hold the Light/Filter
button for more than 3 seconds.
After then water Filter icon turn off with reset status.

Classification

Filter Status

Display

In initial Power On

/ Filter RESET

Blinking

- 68 -

14-1-5 Ice Plus selection

1. Please select ice plus function for quick freezing.

2. When you press the ice plus button, the ice plus icon will be turned
on again.

3. Ice plus function automatically turns off after a fixed time passes.

4. If you want additional power save, you can turn on energy saving
(some heater off for anti-dew).

5. To turn on or off the energy saving function, press Ice plus/Energy
saving Button for more than 3 seconds.

6. We recommend using energy saving function when you go out for
quite a long time and are out of the rainy season.

14-1-6 Dispenser use selection

You can select water or ice by separated pad switch.

• When you press ice type button, ice type will be changed. (Crush or
Cube)

• Hold your cup in the dispenser for a few seconds after dispensing
ice or water to allow the last pieces of ice drops of water to fall into
the cup.

• When after initially establ ishing the water comes out, the water tank
inside fills and until at the time of quality the hour is caught.

WATER PAD
ICE PAD

14-1-7 CONTROL OF FREEZER FAN MOTOR

1. Freezer fan motor has high and standard speeds.

2. High speed is used at power-up, for Ultra Ice, and when refrigerator is overloaded.
Standard speeds is used for general purposes.

3. To improve cooling speed, the RPM of the freezer fan motor change from normal speed to high.

4. High speed (2700RPM) : Initial power on or load corresponding operation, Ultra Ice.
Normal speed (2400RPM) : General working conditions.

14-1-8 Cooling Fan Motor

1. The cooling fan is switched ON and OFF in conjunction with the compressor.

2. The cooling fan Motor has high and standard speeds. (When room temper rapture more high then 38°C speed is high)

3. The Failure sensing method is the same as in the fan motor of the freezing fan motor(refer to failure diagnosis function
table for failure display).

14-1-9 Ice Compartment Fan

1. The Icing Fan is controlled by the the sensor on the top of the ice compartment.

2. The Failure sensing method is the same as in the fan motor of the freezer
(refer to failure diagnosis function table for failure display)

14-1-10 Refrigeration room Fan Motor

1. The refrigeration room fan is switched ON and OFF in conjunction with the refrigeration room temperature.

2. The Failure sensing method is the same as in the fan motor of the freezing fan motor (refer to failure diagnosis function
table for failure display).

- 69 -

14-1-11 Ice PLUS

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, Ice PLUS will be canceled.

4. To activate this function, press the Ice PLUS key and the Icon will turn ON. This function will remain activated for 24 hrs.
The first one hours the compressor, Freezer Fan and Icing Fan will be ON. The next 23 hours the Ice room will be
controlled at the lowest temperature. After 24 hours or if the Ice PLUS key is pressed again, the Ice room will return to its
previous temperature.

5. During the first 1 hours :
(1) Compressor, Freezer Fan and Icing Fan run continuously.
(2) If a defrost cycle begins during the first 30 minutes of Ice Plus, the Ice PLUS cycle will complete its cycle after

defrosting has ended.
If the defrost cycle begins when Ice Plus has run for more than 30 minutes, Ice PLUS will run for 40 minutes after the
defrost is completed.

(3) If Ice PLUS is pressed during defrost, Ice Plus Icon is on but this function will start seven minutes after defrost is

completed and it shall operate for three hours.

(4) If Ice Plus is selected within seven minutes after compressor has stopped, the compressor (compressor delays

seven minutes) shall start after the balance of the delay time.

6. For the rest of the 23 hours, the Ice room will be controlled at the lowest temperature.

14-1-12 How to set the display mode and cancel it

1. With the refrigerator door open, keep pressing the Refrigerator Temp Button and ICE PLUS Button more than 5 seconds,
then it goes to the display mode with Special Beep Sound With Special Beep Sound.

2. Perform the same way again to cancel the display mode.

3. All Freezing unit will be turned off at display mode (Exceptions : Lamp, Display)

- 70 -

14-1-13 Defrosting (removing frost)

1. Defrosting starts each time the COMPRESSOR running time Betwee 7~50 hours.

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

3. Defrosting stops if the sensor temperature reaches 46.4°F(8°C) or more. If the sensor doesn’t reach 46.4°F(8°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)

14-1-14 Defect Diagnosis Function

1. Automatic diagnosis makes servicing the refrigerator easy.

2. When a defect occurs, the buttons will not operate; but the tones. such as ding. will sound.

3. When the defect CODE removes the sign, it returns to normal operation (RESET).

4. The defect CODE shows on the Refrigerator and Freezer Display.

* Display check function: If simultaneously pressing Ultra Ice button and freezing temperature adjustment button for a

second, display LCD graphics on. If releasing the button, the LCD graphic displays the previous
status.
You can check the error code Within 3-hour Period from initial error

14-1-15 Auto pantry

1. The temperature control will automatically start upon the selected Auto Pantry temperature control.

2. You can adjust the Pantry control with three different temperature ranges by pressing the Temp.Selector button.

- 71 -

9. EXPLODED VIEW & REPLACEMENT PARTS LIST

315A

500A

103A

S02

S01

S01

207B

103B

207A

315B

315B

315C

315C

158A

503D

405F

404A

405C

407B

S17

145B

120B

145A

610A

405B

329A

103C

402A

S10

S12

S12

313A

S08

282G

282F

S03

S03

S14

262B

B02

B02

S14

262H

406D

402A

249D

250F

406B

249C

411A

120A

503E

S12

409D

501F

271B

271D

610D

B01

B01

312C

106A

106A

300A

314A

316A

105A

318A

317A

312A

304A

302B

400A

316B

408A

323B

S20

329C

319C

319A

420A

309B

332C

S16

407A

610C

158B

409B

624C

624D

626A

603C

603E

624E

145G

504A

624A

303A

290A

500H

310B

410G

413A

410J

S02

CASE PARTS

CAUTION : Use the part number to order part, not the position number.

FREEZER PARTS

145C

136B

145F

131A

250C

250D

250E

250D

250C

145G

145J

145M

145J

145H

145K

136A

237C

CAUTION : Use the part number to order part, not the position number.

REFRIGERATOR PARTS

142A

140A

142B

142D

141A

141C

141B

141A

141C

141B

141A

141C

141B

162B

145D

162A

146E

151A

151C

161B

141D

161C

151B

154A

161A

CAUTION : Use the part number to order part, not the position number.

DOOR PARTS

230B

233B231B

235A

B06

B06

243C

244A

243B

B06

243D

243A

262E

244A

233A 231A

230A

212G

B06

619B

603B

603C

262C

262C

615A

312B

241A

241B

241C

241E

241D

241D

203A

201A

200A

212D

B06

B06

250B

250B

249H

249G

249K

250A

249J

249E

249F

205B

205A

205C

250H

241G

241K

241K

CAUTION : Use the part number to order part, not the position number.

DISPENSER PARTS

279B

276A

276B

405A

279I

279H

279J

402C

281A

279D

500C

279E

501A

279A

279C

281B

275A

276F

276G

501D

278C

278D

CAUTION : Use the part number to order part, not the position number.

VALVE & WATER TUBE PARTS

617A

625A

616G

623B

616J

616G

623B

616J

603C

616D

616D

S31

616F

627B

S31

619E

627A

S31

603B

S32

619A

CAUTION : Use the part number to order part, not the position number.

ICE BANK PARTS

600A

630F

630B

630A

630H

630G

630C

630Q

630E

630D

611A

612A

630J

606A

630J

CAUTION : Use the part number to order part, not the position number.

P/No. MFL47317027 FBE., 2010 Printed in Korea