LG LMX25964 User Manual

Download

REFRIGERATOR

SERVICEMANUAL

CAUTION BEFORE SERVICING THE UNIT,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

MODEL" LMX25964** COLOR • STAINLESS

CONTENTS

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

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

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

3. DISASSEMBLY ............................................................................................................................................................. 5-14

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

DOOR INSTALLATION ....................................................................................................................................................... 6

DOOR .............................................................................................................................................................................. 7-8

TO REMOVE THE DISPENSER ......................................................................................................................................... 8

DOOR ALIGNMENT ........................................................................................................................................................... 8

FAN AND FAN MOTOR(Evaporator) .................................................................................................................................. 8

ICE FAN SCROLL ASSEMBLY REPLACEMENT ............................................................................................................... 9

DEFROST CONTROL ASSEMBLY .................................................................................................................................... 9

LAMP .................................................................................................................................................................................. 9

CONTROL BOX-REFRIGERATOR .................................................................................................................................... 9

MULTI DUCT .................................................................................................................................................................... 10

MAIN PWB, DISPLAY PWB REPLACEMENT, FUNNEL REPLACEMENT ..................................................................... 10

SUB PWB FOR DISPENSER, DUCT DOOR REPLACEMENT, ICE CORNER DOOR

REPLACEMENT, ICE MAKER ASSEMBLY ..................................................................................................................... 11

AUGER MOTOR COVER, AUGER MOTOR REPLACEMENT ........................................................................................ 12

DOOR ICE BIN ................................................................................................................................................................. 13

HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER .............................................................................. 14-17

4. ADJUSTMENT ............................................................................................................................................................ 18-19

COMPRESSOR ................................................................................................................................................................ 18

PTC-STARTER ................................................................................................................................................................. 18

OLP(OVERLOAD PROTECTOR) ..................................................................................................................................... 19

TO REMOVE THE COVER PTC ...................................................................................................................................... 19

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

6. TROUBLESHOOTING ................................................................................................................................................ 21-25

COMPRESSOR AND ELECTRIC COMPONENTS .......................................................................................................... 21

OTHER ELECTRICAL COMPONENTS ............................................................................................................................ 22

SERVICE DIAGNOSIS CHART ........................................................................................................................................ 23

REFRIGERATION CYCLE .......................................................................................................................................... 24-25

7. OPERATION PRINCIPLE & REPAIR METHOD OF ICEMAKER .............................................................................. 26-28

8. DESCRIPTION OF FUNCTION, CIRCUITS & ERROR CODES ................................................................................ 29-45

9. EXPLODED VIEW & REPLACEMENT PARTS LIST ..................................................................................................... 46-

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

DOOR DESIGN

DIMENSIONS (inches) NET WEIGHT (pounds)

COOLING SYSTEM

TEMPERATURE CONTROL

DEFROSTING SYSTEM

DOOR FINISH HANDLETYPE INNER CASE

INSULATION

DiMENSiONS

SPECIFICATIONS

Side Rounded

353/4X 34 ,/4X 69 3/_(WXDXH) 25cu.ft

308.65 (25cu.ft)

Fan Cooling Micom Control

Full Automatic Heater Defrost Stainless Bar ABS Resin

Polyurethane Foam

ITEMS

VEGETABLE TRAY COMPRESSOR

EVAPORATOR

CONDENSER

REFRIGERANT

LUBRICATING OIL DEFROSTING DEVICE

REFRIGERATOR

LAMP

FREEZER

SPECIFICATIONS

TransparentDrawerType Linear

Fin Tube Type

Spiral Condenser R-134a (145 g) FREOLa8G (180 ml)

SHEATH HEATER

LED Module(21)

Bulb Lamp

i! G

iii i

Description LMX25964**

Depth w/Handles A 34 1/4 in. Depth w/o Handles B 31 1/4 in. Depth w/o Door C 27 7/8 in.

Depth (Total with Door Open) D 46 1/2 in. Height to Top of Case E 68 3/8 in.

Height to Top of Door Hinge F 69 3/4 in.

Width G 35 3/4 in. Width (door open 90 deg. w/o handle) H 39 1/4 in.

Width (door open 90 deg. w/handle) I 44 1/4 in.

-3-

2. PARTS IDENTIFICATION

_) ADJUSTABLE REFRIGERATOR SHELVING

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

MODULAR DOOR BINS

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

_) LED INTERIOR LAMPS _) FIXED DOOR BIN

O INTERIOR LAMP

BOTTLE HOLDER (OPTIONAL)

Ice Bank

Ice Door

-4-

3. DISASSEMBLY

3=1 REMOVING AND REPLACING REFRIGERATOR DOORS

• Removing Refrigerator Door

-& CAUTION : Before you begin, unplug the refrigerator. Remove food and bins from doors. 1_Left Door -FIG. 2

1. Disconnect water supply tube by pushing back on the disconnect ring (4).-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(3).

5. Disconnect the two 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. 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. Disconnect wire harness (3).

4. Remove the grounding screw (4).

4. Rotate hinge lever (5) clockwise. Lift top hinge (6) free of hinge lever latch (7).

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

5. Lift door up from middle hinge pin door.

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

Figure 2

(7) /

(3).

(2)

(8)

_(1)

Figure 3

(1)_

(3)_-4_

(2)

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.

Incorr_ct

3-2 DOOR

• Door Gasket Removal

1. Remove door frame cover

Starting at top of cover and working down, snap cover out and away from door.

Frame

Figure 1

• Door Gasket Replacement

1. Insert gasket bracket clips

1) Insert gasket bracket edge beneath door frame edge.

2) Turn upper gasket bracket spring so that the spring ends are in the door channel.

3) Push in clip until you hear it snap securely into place.

Bracket Clip [] .

Spring

/I, il

Door -..

Frame

Correct Incorrect

Figure 4

2. Remove gasket bracket clips

There are two clips on each door. Start bracket removal near one of the middle clips.

1)Pull gasket back to expose gasket bracket clip and door frame.

2)Insert a flat tip screwdriver into seam between gasket bracket and door frame and pry back until clips snap

out.

3)Continue prying back along seam until all clips snap out.

__] Gasket

Door /_ II ,_ Bracket Clip

Frame ,_ ___"L

Flat Tip _ II \

Screwd river___l.. _..T_.._-"

Jll III Ill II W Gasket

3. Remove gasket Pull gasket free from gasket channel on the three remaining sides of door.

Bracket

Figure 2

4) Push in remaining clip until you hear it snap securely into place.

Note : Make sure that no part of gasket bracket edge

protrudes from beneath door frame edge.

2. Insert gasket into channel

1) Snap gasket assembly into the door bracket.

Correct

Incorrect

Figure 5

Figure 3

2) Press gasket into channels on the three remaining sides of door.

Figure 6

3. Replace door frame cover

Starting at top of cover and working down, snap cover back into door.

3-3 DOOR ALIGNMENT

If the space between your doors is uneven, follow the instructions below to align the doors:

1. With one hand, lift up the door you want to raise at middle hinge.

2. With other hand, use pliers to insert snap ring as shown.

3. Insert additional snap rings until the doors are aligned. (Three snap rings are provided with unit.)

t,,f,_,

ttFtt:

Figure 7

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

-7-

GRILLE Figure 9

CAUTION

DO NOT ATTEMPT TO REMOVE THE MULLION •

REFRIGERANT LINES!

* 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)

(3) (4)

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.

3-5 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

DEFROST-CONTROL

ASSEMBLY

Figure 10 Figure 11

CAUTION

DO NOT ATTEMPT TO REMOVE THE MULLION •

REFRIGERANT LINES!

Figure 13

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

Cover, Lamp LED, Assembly Case Lamp

Figure 14

3-6-2 Freezer Compartment Lamp

1. Unplug refrigerator power cord form outlet.

2. Remove screw with driver.

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

-8-

Figure 15

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.

3-9 DISPENSER

1) Disconnect funnel and button assembly by pulling down and

forward.

Figure 16

3-8 MAIN PWB

_k WARNING : Unplug the refrigerator before removing the

control board.

1) Loosen 3 screws on the PWB cover.

2) Remove the PWB cover

2) Hold the left and right side of the "Cover Assembly,

dispenser" as shown inthe picture, and pull and

remove it. The cover

dispenser is attached with a

hook.

CAUTION : When replacing the dispenser 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 dispenser cover, as shown in the picture below.

3-10 DISPLAY PWB REPLACEMENT

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

1) Pull up and out on the dispenser cover to remove.

2) Follow the steps in the pictures

-9-

3-11 FUNNEL REPLACEMENT

1) Pull up and out on the dispenser cover to remove.

2) Disconnect the wire harness.

3) Replace in reverse order.

3-12 SUB PWB FOR WORKING DISPENSER

1) Loosen the screw on the sub PWB.

3-14 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.

3-15 ICEMAKER ASSEMBLY

1) Loosen twoscrews as shown in the first picture.

2) Pull the sub PWB down.

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

3-13 DUCT DOOR REPLACEMENT

1) Pull up and out on the dispenser cover to remove.

2) Disconnect the wire harness.

3) Remove the funnel

4) Replace in reverse order.

2) Disconnect the wire harness & ground screw replace thelcemaker assembly in the reverse order of removal.

3) It separates a ground connection screw.

-10-

3-16 AUGER MOTOR COVER

1) After removing the icemaker remove the (5) stainless screws holding the auger motor cover, shown in the picutres below.

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

3) Disconnect wire harness of motor cover assembly. There is a auger motor on the back, as shown in the picture.

Auger Motor

Icemaker Power & Full detection Signal

-11 -

3-17 HOW TO REMOVE A DOOR ICE BIN

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

2) Lift the lower part slightly.

3-18 HOW TO INSERT A DOOR ICE BIN

1) Insert the Ice Bin, slightly tilting it to avoid touching the Icemaker. (especially, ice maker lever)

•_ Insert the ice bucket carefully avoid contacting the automatic shut off arm.

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 2) Remove the top drawer

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

from each side).

Step 5) Remove only 1 screw of gear ice, and disassemble

the bar and gear ice

Step 4) Removal of the freezer door is done by lifting clear

of the rail support. Fully extend both rails.

Step 6) Remove 2 screws of both side of supporter covers

tv and disassemble the supporter cover tv.

-13-

3-19-2 Follow Steps to Reinstall

Step 1) Insert both side of supporter cover tv into connector rails, and then screw them.

Step 2) (_ Assemble a bar and gear ice with screw.

2_ Push the otherside of the gear to inside of the bar.

Step 3) Put gear ice assembled with the bar by screw into connector rail's hole.

Step 4) Insert opposite gear ice into connector rail and screw them

-14-

Step 5) 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 6) Reinstall the freezer door by inserting the rail tabs

into the guide rail.

* Assemble them like as pictures

Step 7) Reinstall the two screws into the guide rails

(one from each side).

Step 8) Reinstall the top drawer, and close the freezer

door.

-15-

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.

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 MOTOR

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.)

Collet --

Tube --

Insert Line

Clip --

-16-

3-22 TOP DRAWER

To remove the freezer drawer, pull the drawer open to full extension. Remove the drawer and Ice Bin lifting the basket from the rail system.

3-23 BOTTOM DRAWER

To remove the freezer drawer, pull the drawer open to full extension. Remove the lower DuraBase @basket by lifting the

basket from the rail system.

-17-

4. ADJUSTMENT

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

4-1-4 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 vaJue,

decrease the target volt by 3V.

- Current Trip

Current trip is set in order to protect compressor mechanical part and drive from the overcu rrent that might

arise during the operation. Check the current for every 416.7,s and if the Trip exceeds 1.86Arms more than three times at Comp ON,

forcibly stop and restart six minutes later.

- 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

416.7,s and if the condition fits more than three times at Comp ON, The Lock Point Trip occurs.

- IPM fault Trip It occurs if FO signal received from IPM is LOW. For

every 416.7_s, check whether FO signal is LOW. The trip occurs if it is found three times during the five

periods(83ms).

(1) Remove the Cover Back M/C

(2) Loosen two screws on comp base

(3) Use a L-shapedflap tool to pry off the cover (4) Assembly in reverse order of disassembly

-18-

LG Electronics IIIIlllllllllllIIIIIIll C_RCUUTD_AGRAM

MEZ64036506

*pIECE DE M_E A LA TERRE REACTEIJR _ARTI E WP DE PRISE ET OE MIS A _ TERRE DU CO_pRESSEUR

]

€0

_W(N)

ICEMAKERKI-

BK(BLACK):NOIR B_(BLUE):BLEU BN(BROWN): MARRON BO(BRIG_TORANGE): ORANGEBRILLANT GY(GRAY):GRIS RD(RED): ROUGE WH/RD(W_ITE/RED): BLANC/ROUGE BNtWH(BROWN/WHITE}: MARRON/BLANC R_YL(RED/YELLOW): ROUGE_AUNE YL(YELLOW):JAUNE GN(GREEN}: VERT PR(PURPLE):PURPLE WH(WHITE):BLANC WH/BK(WHITE!BLACK):LANC!NOIR YUBK(YELLOW/BLACK}:JAUNE/NOIR P_WH(PURPLE_HITE): VlOLE_BLANC BL/RD(BLUEiRED}:BLEU!ROUGE SB(SKYBLUE): BLEU/BLANC PK(PINK): ROSE GN/YL(GREEN/YELLOW): VERT!JAUNE BL_H(BLUE_HITE) : BLEU/BLANC RDANH(RED_HITE):ROUGE/BLANC GY/W_(GRAY/WHITE): GRIS/BLANC BOIBL(BRIGHTO_NG_LUE} :ORANGEBRILLAN_BLEU BOeVH(BRIGHTORAN6E_HITE):ORANGEBRILLANT_BLANC

6. TROUBLESHOOTING

ERROR CODE on display panel

Error Detection

3 Er rS Refrigerator Sensor

4 Er dS Defrosting Sensor

5 Icing Sensor Error Er IS

Category

Normality

Freezer Sensor

Error

Refrigerator

Sensor Error

Defrosting Sensor

Error

Poor Defrosting

Abnormality of

Brushless DC

FAN Motor for Ice

Making

Abnormality of

Brushless DC FAN Motor for

Freezer

Temperature

Error Display

Freezer

Temperature

Er FS

Ref.

Error Generation Factors Remark

None Normal operation of Display Short or Disconnection of

Freezer Sensor Short or Disconnection of

Short or Disconnection of

Short or Disconnection of Icing Sensor

Even though it is passed 1hour since then Defrosting, if Defrosting sensor is not over 46°F(8°C), it is caused

It is caused when F/B signal isn't over 65 seconds during

Brushless DC FAN motor operating

It is caused when F/B signal isn't over 65seconds during

Brushless DC FAN motor operating

Each Sensor have to check disconnection

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

Abnormality of

Brushless DC FAN Motor for

Mechanic Room

Communication

NOTE) In the case of Room Temperature Seneor Error, "Er rt" appears on the Display when ICE PLUS KEY and Freezer

Temp' KEY pressed at the same time for one second.

NOTE) 3 hours befor the error : Press the ICE PLUS button and Freezer button simultaneously

3 hours after the error : All errors, except for "Er rt" error, are displayed.

Error

It is caused when F/B signal isn't over 65seconds during

Brushless DC FAN motor operating

Communication Error between Micom of Main PCB

and Display Micom

Poor BLDC Motor connection, DRIVE IC, and TR

Poor Communication

connection, Poor TR of Transmitter and Receiver

- 20 -

7. PCB Picture

7-1 Main PCB

P/No & MFG

EBR73304201

(2011.03~)

Picture

CON2 CON3

CON1

CON5

CON201

CON7

-21 -

7-2 Display PCB & Sub PCB

P/No Picture

Display PCB

EBR433585

(2010.02~)

Sub PCB

EBR60070706

(2010.02~)

CON3 CON1

CON2

- 22 -

8. Troubleshootin laWith Error Dis

84 Freezer Sensor Error (Er FS)

No Checking flow Result & SVC Action

1 Check for a loose connection.

2 Check the Blue/White to

Blue/White.

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii_i_;!_;!_i_!!_i_!iii_!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_!_i!_!_!iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii_i_i!_!_i!_i!_i!_!_!i_i!_!_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_i_

0 S Short Change the sensor

Infinite Replace the

ohms Open refrigerator

<CON4>

See

resistance Normal resistance (Table-I)

table

-22°F / -30°C 40 k_

-13°F / -25°C 30 k_

-4°F / -20°C 23 k_ 5°F/-15°C 17 k_

14°F/-10°C 13 k_

23°F / -5°C 10 k_

32OF/ OoC 8 k_

The sensor is determined by the temperature.

For example, 23k£ indicates =4°F.

Check the Temp and

- 23 -

8-2 Refrigerator Sensor Error (Er rS)

No Checking flow Result & SVC Action

1 Check for a loose connection.

2 Check the White to White.

0 _ Short Change the sensor

Infinite Replace the

ohms Open refrigerator

<CON4>

See

resistance Normal resistance (Table-2)

table

23°F / -5°C 38 k_

32°F / O°C 30 k_

41°F / 5°C 24 k_ 50°F/10°C 19.5 k_ 59°F/15°C 16 k_

The sensor is determined by

the temperature.

For example, 30k£ indicates 32°F.

Check the Temp and

- 24 -

8-3 Icing Sensor Error (Er IS)

No Checking flow Result & SVC Action

1 Check for a loose connection.

2 Check the Blue to Blue.

0 _ Short Change the sensor

Check the resistance

of the defrost sensor

wires back to the

main PCB. If they are

Infinite Open open between the

ohms Main PCB and the

connector for the

icemaker it will be

necessary to replace

the refrigerator.

See

Check the Temp and

resistance Normal resistance (Table-I)

table

-22°F / -30°C 40 k_

-13°F / -25°C 30 k_

-4°F / -20°C 23 k_

- 25 -

5°F/-15°C 17 k_

14°F/-10°C 13 k_

23OF/ -5oc 10 k_

32OF/ OoC 8 k_

The sensor is determined by

the temperature.

For example, 23k£ indicates -4°F.

8-4 Defrost Sensor Error (F dS)

No Checking flow Result & SVC Action

1 Check for a loose connection.

Check the Orange to Orange.

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii i i ! ! l i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii i ;! ! ! ! ! i i ii i i ! i! i! i! i! i! i! i! i! i! i! i! i! i! i! i! i! i! i! i! i! i! i! i! i! i! !i !i !i !i !ii i

0 _ Short Change the sensor

Infinite Replace the

ohms Open refrigerator

Check the Brown to Brown.

<CON4>

See

resistance Normal resistance (Table-3)

table

-22°F / -30°C 40 k_

-13°F / -25°C 30 k_

-4°F / -20°C 23 k_

5°F/-15°C 17 k_

14°F/-10°C 13 k_

23°F / -5°C 10 k_

32OF/ OoC 8 k_

Check the Temp and

- 26 -

The sensor is determined by

the temperature.

For example, 23k£ indicates -4°F.

8-5 Defrost Heater Error (Er dH)

No Checking flow Result & SVC Action

1 Check the Door gasket.

Check the Defrost control part.

Defrost Heater

Fuse-M

Defrost 34~42 _ Goto the 3

Heater Other Change Fuse-M

Defrost Sensor

Other Change Fuse-M

0 _ Go to the 3

Check the resistance of

the defrost sensor wires

back to the main PCB.

Infinite

ohms

between the Main PCB

and the connector for the icemaker it will be

necessary to replace

Go to the 3

If they are open

the refrigerator.

Input Test 3 Mode. (Push the button 3 times)

Check the Blue(Pin4) to Orange(PinD) at CON3 on the main PCB

112 ~ 116V Go to the 5

0 V Replace Main PCB

<CON3>

Release the test mode. Push the button 1 times. (Normal)

Check the Blue(Pin4) to Orange(PinD) at CON3 on the main PCB

<CON3>

0 V Normal

112 ~ 116 V Replace Main PCB

- 27 -

8-6 Freezer Fan Error (Er FF)

Checking flow

Reset the unit and Input Test I 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.

Check the Fan motor.

Result & SVC Action

!i!i!i!i!i!i!i!i!iiiiiiiiii ! ii ii ilililililililililiiiii !i ii i!,i!i!i!i!iiii ii'il

No airflow Go to 3

Airflow Go to 4

Rotate fan using your hand. It feel stuck or locked up, change the motor.

(Cause of ice or rust inside of motor)

(1)Pin8, (2)Pin10, (3)Pin12

<CON7>

iiiiiiiiiiiiiiiiiiiiiiiiii ! ! ii ii ! {i i i i i i i i i i i i i i

(1) ~ (2) (2) ~ (3)

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii i 'ii i! 'i! ii i iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

Below 12 V Change the PCB

0 or 5 V Change the motor

- 28 -

8-7 Icing Fan Error (Er IF)

No Checking flow Result & SVC Action

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.

Check the Connector. (Frozen caused the PCB short)

Check the Fan motor. (Frozen, Lock, ect.)

iiiiiiiiii ii'ii !i !iv !i !i !i ii i ii!iii i i 'ii ii'ii ii ii !ii!,!i!i

No airflow Go to the 3,4

Airflow Go to the 5

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

Wire seal (Silicon)

Check the Fan motor voltaqe.

(1)Pin1, (2)Pin3, (3)Pin5

<CON7>

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii i i!!i!i!! iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii i ! i iI ! i! i! i! i! i! i! i! i! i! i! i! i! i! ! ;! ;! ;! ;! ! !i!

(1) ~ (2) Below 9 V Change the PCB (2) ~ (3) 0 or 5 V Change the motor

- 29 -

8-8 Condenser Fan Error (Er CF)

No Checking flow Result & SVC Action

Reset the unit and Input Test I Mode.

(Push the button 1 time)

Check the fan rotating.

While an error code is displayed,

the fan is not working.

Check the Fan motor and surrounding.

Check the Fan motor voltage.

!i!i!i!i!i!i!i!i!iiiiiiiiii ! ii ii ilililililililililiiiii !iiii!,i!i!i!i!iiiiiiil

No airflow Check motor

Airflow Go to the 4

Rotate fan using your hand. It feel stuck or locked up, change the motor.

(1)Pin2, (2)Pin4, (3)Pin6

<CON7>

(1) ~ (2) Below 10 V Change the PCB (2) ~ (3) 0 or 5 V Change the motor

- 30 -

8-9 Communication Error (Er CO)

No Checking flow Result & SVC Action

1 Check the loose connection.

Check the Red to White/Red.

Check the Orange to White/Red.

Check the White/Black to White/Red.

12 V Go to the 3

Check the Hinge

Other (loose connection)

Change the Main PCB

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii_i'_,_i_i_i'ii_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_i!_ii_!i_!_iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii_i_i_ii'ii_!i_!_i_ii_i_i_i_iii__i,_i_'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii'ii,i!_i!_!

0 V or 5 V Change the Display PCB

Other Go to the 4

0 V or 5 V Change the Main PCB

Other Go to the 5

Check the White/Red to Orange.

0 V or 5 V Change the Display PCB

Other Go to the 6

<CON5>

Check the White/Red to White/Black.

!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i_!i!_!_ii_!i!!i!!i!!i!!i!!i!!i!!i!!i!!i!!i!!i!!i!!i!!_!!i`i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!ii_ii_i_!_!!_!_!!_!_!i_j_!_i_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!!_i_

0 V or 5 V Change the Main PCB

Other Normal

<CON5>

- 31 -

9. laTroubleshootin Without Error Dis

9-1 Cube mode doesn't work

No Checking flow Result & SVC Action

1 Check the loose connection.

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

<CON2>

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

<CON2>

Check the resistance value.

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii_ii_!_ivi!_ii!i_!i_ii_i_i_i!_i_!;!;!;!;!;!;!;!_!;!;!;!;!;!;!;!_!;!;!

Activated

Not

activated

112~115V

Other

0~2V

Other

Go to the 3

Change PCB

Go to the 3

Change PCB

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii_ii_!_ivi!_ii!i_!i_ii_i_i_i!_i_!;!;!;!;!;!;!;!_!;!;!;!;!;!;!;!_!;!;!

Activated

Not

activated

9~12V

Other

0~2V

Other

Go to the 4

Change PCB

Go to the 4

Change PCB

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii_!ii_!i_i_i_i_i_i_i_i_i_i_i_i_i_i_iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii_!_i_i!_ii_i!_iiiiiiiiiiiiiiiiiiiii_i_;!_!_!_!_!_i_!_ii_i_i_i_i!_ii_ii_ii_ii_ii_ii_ii_ii_ii_ii_ii_ii_ii_ii_ii_ii_ii_ii_

31.1 ~ 42.1 _ Normal

(1) to (2) Replace

Other

Geared Motor

44~54 _ Normal

(3) to (4) Other Replace

Dispenser Solenoid

(3) (4)

- 32 -

9-2 Water mode doesn't work

No Checking flow Result & SVC Action

1 Check the loose connection.

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

<CON2>

Check the Blue to Gray on the Dispenser PCB (While pushing the Water Button)

<CON3>

Activated

Not

activated

Activated

Not

activated

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii_i!_iii_iJ_ii_ii_ii_ii_il_ii_ii_ii_ii_ii_ii_ii_il_ii_ii_ii_ii_ii_ii_ii_il_iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii_ii_!_i_i_ii_i_!i_i!i_i_!i_!!_!!_!!_!!_!!_!!_!!_!!_!!_!!_!!_!!_!!_!!_!_!_!_i

112 ~ 115V

Other

0~2V

Other

Go to the 3

Change PCB

Go to the 3

Change PCB

112 ~ 115V

Other

0~2V

Other

Go to the 4

Change PCB

Go to the 4

Change PCB

Check the resistance value.

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

II I

Dispenser Ice Maker

Machine Room

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiii#_i_!_i_!i_!i_!i_!i_!i_!i_!i_!i_!i_!i_!i_!i_!i_iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii_i_i!ii!_i_!_ii_i!ii_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii_i_i_!i!_i!_i!_i!_i!_iiiii_i_i_i_ii_ii_ii_ii_ii_ii_ii_ii_ii_ii_ii_ii_ii

360 ~ 420 _ Normal

(1)to (2)

Other Replace

Water Valve

360 ~ 420 _ Normal

(3) to (4) Other Replace

Water Valve

In door

- 33 -

9-3 Freezer room AC Bulb Lamp doesn't work

No Checking flow Result & SVC Action

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

Check the door S/W resistance.

Check the Yellow Blue to Sky blue.

<CON4>

Check the Blue to Black.

iiiiiiiiiiiiiiiiiill!_ili_aii_i!i!!i!!i!!i!!i!!i!!i!!i!!i!!i!iliiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii!_i_iiiililii_!_ii!_!_i_ii_iiiiiiii_iiiiiiii_iiiiiiii_iiiiiiii_ii_i

0_ Go to the 3

Normal

Other Change door S/W

Push Infinity Go to the 3

S/W Change door S/W

5 V Go to the 4

Closed

Other Change the Door S/W

0 V Go to the 4

Open

Other Change the Door S/W

0 ~ 2 V Normal

Closed

Other Change the Main PCB

<CON3>

- 34 -

Open

115 V Change the F Lamp Other Change the PCB

9-4 Refrigerator room lamp doesn't work

No Checking flow Result & SVC Action

1 If feel sticky, Change the door s/w.

Check the Refrigerator door switch.

Check the door S/W resistance.

Check the Black to Gray White.

iiiiiiiiiiiiiiiiiiiii ! i ii ii iii!i!i!i!iii!!i

0 _ Go to the 3

Normal

Other Change door S/W

Push Infinity Go to the 3

S/W Other Change door S/W

iiiiiiiiiiiiiiiiiiiiiiiii i ' ! iliiiii i !ii!ii!ii!ii!i!i;i! ;i!iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii i i i i i! i ! i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i ii

12 V Go to the 4

Normal

Other Change the PCB

<CON7>

Check the Red to Black.

Check the Black to White.

iiiiiiiiiiiiiiiiiiiiiiiii ii ii iili i i i i i i i i i i iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii i i ! i i i i i iii ! i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i

12 V Go to the 5

Other Change the LED Lamp

0 ~ 2 V Normal

Closed

Other Change the Door S/W

12 V Normal

Open

Other Change the LED Lamp

- 35 -

9-5 Poor cooling in Fresh food section

No Checking flow Result & SVC Action

1 Check R-Sensor resistance.

23°F / -5°C 38 k;2

32°F / 0°C 30 k_2

41 °F / 5°C 24 k_2

50°F/10°C 19.5 k_2

<CON7>

R-Sensor is determined by the temperature.

For example, 30k_ indicates 32°F.

59°F/15°C 16 k_2

Reset the unit and Input Test I Mode.

(Push the button 1 time)

Open the fresh food door and Check the air flow.

Check the air temperature. Cold or not?

i!i!i!i!i!i!i!i!i!i!i!i! _i i_ii_!i!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!i!iii'ii_ii_ii_i_i_!_i_ii_i,ii_i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!'!!'!!_i!

Airflow Go to the 4

Check the R Fan motor

No airflow Check the damper

(Go to the 6)

_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_i_i_i_i_!_i!_i!_i!Ii!ii_ii_ii_ii_ii_ii_ii_ii_ii_ii_ii_ii_ii_!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!_i_ii_!i_!i_ii_!i_!_i_i_i_i_!i_i_ii_!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i'!i!i_!i

Cold Normal

Check the Compressor

Not cold And sealed system

- 36 -

Checking flow Result & SVC Action

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

1 Mode

2 Mode

Open

Closed

Damper is normal.

(Check the Damper)

(4)

Check the Fan motor. Rotate fan using your hand.

It feel stuck or locked up, change the motor.

(Cause of ice or rust inside of motor)

1,2

mode

(1)to (2)

(3) to (4)

Not

working Change the damper

270 ~330_

Other

270 ~330_

Other

Normal

Change damper

Normal

Change damper

Check the F Fan motor voltage.

(1)Pin8, (2)Pin10, (3)Pin12

<CON7>

- 37 -

(1) ~ (2) (2) ~ (3)

Below 12 V Change the PCB

0 or 5 V Change the motor

9-6 Poor cooling in Freezer compratment

No Checking flow Result & SVC Action

1 Check the F Sensor resistance

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii_iiiiiii_i!i!iiiiiiiiiillili_iilliiililiii_iiilliiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii,iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii iiii_iiiii_iililiiilililili_iililiiilililili_iililiiililiiili_iilil.....

-22°F / -30°C 40 k_2

-13°F / -25°C 30 k_2

-4°F / -20°C 23 k_2 5°F/-15°C 17 k;2

<CON7>

The F Sensor is determined by the temperature.

For example, 23k_ indicate -4°F.

14°F/-10°C 13 k_2

23°F / -5°C 10 k_2

32°F / 0°C 8 k_2

Reset the unit and Input Test I Mode.

(Push the button 1 time)

Open the freezer door and check the air

flow.

Check the air temperature. Cold or not ?

i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!i!_!_i_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!_!_i!_i_i!_!_i_!_!_i!

Airflow Go to the 4

No airflow Check the F Fan motor

_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_i_i_i_i_i_i_I_I_I_I_I_I_I_I_I_I_I_!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!_i_!i_!_i_!_!_i__!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!_!i_!i'!i_i

Cold Normal

Check the Compressor

Not cold And sealed system

- 38 -

9-7 Over cooling in Fresh food compartment

No Checking flow Result & SVC Action

1 Check the R Sensor resistance.

23°F / -5°C 38 k_

32°F / 0°C 30 k_ 41°F / 5°C 24 k_

50°F/10°C 19.5 k_

<CON7>

The R Sensor is determined by the temperature.

For example, 30k_ indicates 32°F.

59°F/15°C 16 k_

Reset the unit and Input Test 1 Mode.

(Push the button 1 time)

Open the refrigerator door and Check the air flow.

Airflow Go to the 4

Check the R Fan

No airflow Check the damper

(Go to the 5)

Input Test 2 Mode and Check the air flow.

(Push the button 1 time)

Airflow Go to the 5

No airflow Normal

Check the damper resistance.

_(4)

(1)

270 ~330_ Normal

(1) to (2)

Other Change damper

270 ~330_ Normal

(3)to (4)

Other Change damper

- 39 -

10. Reference

10=1TEST MODE and Removing TPA

1. How to enter the 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

(All things displayed)

* 2 times :Damper closed

(22 22 displayed)

Main PWB

2. How to remove Terminal Position Assurance (TPA)

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

* 3 times :Forced defrost mode

(33 33 displayed)

- 40 -

10-2 TEMPERATURE CHART - FREEZER AND ICING SENSOR

-39°F (-40°C) 73,29 k_ 4,09 V

-30°F (-35°C) 53,63 k_ 3,84 V

-21OF(=30°C) 39,66 k_ 3,55 V

-13°F (=25°C) 29,62 k_ 3,23 V

-4°F (-20°0) 22.33 k_ 2.89 V

5°F (-15°C) 16.99 k_ 2.56 V

14°F (-10°0) 13.05 k_ 2.23 V

23°F (-500) 10,10 k_ 1.92 V

32°F (O°C) 7.88 k_ 1.63 V

41°F (500) 6.19 k_ 1.38 V

50°F (10°0) 4.91 k_ 1.16 V

59°F (15°0) 3.91 k_ 0.97 V

68°F (2000) 3.14 k_ 0.81 V

77°F (2500) 2.54 k_ 0.67 V

86°F (3000) 2.07 k_ 0.56 V

95°F (3500) 1.69 k_ 0.47 V

104°F (4000) 1.39 k_ 0.39 V

- 41 -

10-3 TEMPERATURE CHART - REFRIGERATOR AND DEFROST SENSOR

-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 (O°C)

41 °F (5°C)

50°F (10°C)

225.1 k_

169.8 k_

129.3 k_

99.30 k_

76.96 k_

60.13 k_

47.34 k_

37.55 k_

30 k_

24.13 k_

19.53 k_

4.48 V

4.33 V

4.16V

3.95 V

3.734 V

3.487 V

3.22 V

2.95 V

2.67 V

2.40 V

2.14V

59°F (15°C)

68°F (20°C)

77°F (25°C)

86°F (30°C)

95°F (35°C)

104°F (40°C)

15.91 k_

13.03 k_

10.74 k_

8.89 k_

7.40 k_

6.20 k_

1.89 V

1.64 V

1.45 V

1.27 V

1.10V

0.96 V

- 42 -

10-4 How to check the Fan-Error

(1) EBR733042

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 afan motor malfunction,

this process is repeated 3 times. Ifthe 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.

No signal Error Display

;15s 15s 15s;

N°rmal drive I........ __

No signal

Pause 30min _

;20s 15s 15s;

Repeat

20s

Pause 30min

- 43 -

11. COMPONENT TESTING INFORMATION

11-1 Defrost Controller Assembly

Function

How to Measure

(Fuse-M)

How to Measure

(Sensor)

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

Measure the 2 pin connected to Fuse-M. If the ohmmeter indicate below O.1ohm

Fuse-M is good. If Fuse-M measures infinite

ohms, it is open and needs to be replaced.

Measure the 2 pin connected to Sensor. If the ohmmeter indicate 11k;2(at room

temperature) It is normal.

Checking the resistance at other

temperatures, check the sensor resistance chart.

Standard

Fuse-M (at all temperature)

Test Point Ressult

(1) to (2) 0 ~ 0.1

Sensor (at room temperature)

Test Point Ressult

(1) to (2) 11

- 44 -

11-2 Sheath Heater

Function

How to Measure

Sheath heater is a part for defrost.

(1) (2)

Measure the 2 pin connected to Sheath Heater. If resistance is between 34 ~ 42 ohms, the heater is normal.

If it measures infinite ohms the heater is open and needs to be replaced.

Standard

Sheath heater (at all temperature)

Test Point Ressult

(1) to (2) 34 ~ 42_

- 45 -

11-3 Door Heater Assembly

Function

How to Measure

The heater is designed to prevent the exterior moisture on the door.

GY BL

BN YL I

i i

Standard

Test Point Ressult

(1) to (2) 2.3 ~ 2.9_

- 46 -

11-4 Door Switch

Function Senses when the door is opened or closed by sending a signal to the Main PCB.

How to

Measure

<Switch, Freezer> <Switch, Refrigerator>

Button

(Plunger)

Standard

Beep Beep

Check the resistance between connectors 1,2 and 3, 4.

Multimeter beep - Switch F,R

Nomal Push the button(Plunger)

O_ None (_ _)

- 47 -

11-5 Solenoid

Function

How to Measure

- Dispenser solenoid : When customer push the dispenser button, Pull duct door and abstract from ice bank.

Dispenser Solenoid

Standard

Dispenser Solenoid

Test Points Result

(1) to (2) 44 ~ 54_

- 48 -

11-6 AC Motor ASSEMBLY (Geared Motor & Solenoid)

Function

How to Measure

The Geared Motor of ac motor assembly advances forward the ice by rotating the ice and The solenoid of ac motor assembly selects one of the cube mode or crush mode.

- Cube solenoid • Pulling the stir lip for moving the ice in icemaker system.

< Geared Motor >

Take out the male

housing from

female housing

Measure the resistance between

(1) and (2)

< Geared Motor >

Remove the female housing from

terminal.

istance between (3) and (4)

) Measure the res

Standard

Check the resistance between connectors (Geared motor 1,2) and (solenoid 3, 4). 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 Result

(1) to (2) 2.38 ~ 4.02&&

Test Points Result

Cube Solenoid

(1) to (3) 32 ~ 40S&

- 49 -

11-7 Damper

Function

How to Measure

The damper supplies the cold air from the freezer to the refrigerator section.

F ................................. r ....................................... 1

Table(I)-" 2L_-- r'er'ing)

I I I

Red o

I I I

I I

L ................................. L ....................................... i

_A4E W

Table(2): 2-2{ _0]XF_£](CWRotation}

Housln_ No. & Step

L/Wire Color I 2 3 4

I I

t- Blue (A) + +

2- Red (B} + +

3- White(AT + +

I I

4- Yellow(E_) - + +

I I

< Damper Circuit >

Blue

Red

White

I I I

I I

Standard

White

Yellow

Check the @ ,@

Check the resistance between connectors 1,3 and 2,4.

Damper

Test Points Result

Red and Yellow 373 ~ 456_

Blue and White 373 ~ 456_

Check the @, @

< extension >

Check the @, @

Test Points Result

- 50 -

11-8 Light Bulb Socket

Function

How to Measure

Make sure the light bulb is screwed in tight to the light socket.

Standard

Check the resistance between connector of housing and connector of lamp socket.

Test Points Result

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

- 51 -

12. TROUBLESHOOTING

PCB Check (Simplify)

A-inverter

Power Off

[

Test Mode

TEST1

oon2o1Disconnect

Ref.

Forced Starting

Power On

Comp

FC75(A-Inverter)

TDC (Full Stroke)

TEST 1 Mode

Protection Logic

PCB OK ]

Display & sound

Display ON, Buzz 1 time

Check Voltage about 200V

past 30second after turn on

Refer

Troubleshooting

= " Y N

LED blink2

LED blink6

- 52 -

12-1 Check A

There is PC Board located in the PCB case. The control driver is PC board for the compressor.

This step shows the source voltage of the driver PC board.

Step1. Open PCB Cover Step2. Check Driver PCB

* Driver PCB located in machine room.

- 53 -

12-2 Check B B1. LED blinks once, then repeats (FCT0 Fault:A-Inverter)

Blink OFF Blink OFF

- Purpose: Detecting motor current and voltage error

- Check voltage at point A (Motor Voltage), point B (Motor Current) and Point C (Capacitor Voltage) when compressor is off.

- Spec: Points A, B, & C 2.5V +- 0.3V

Protection

logic

Check B

(FCT 0) Check B1

b[ Blink I time

Replace Driver PCB ]

Protection Logic

:" GND

0 Voltage

B2. LED blinks two times, then repeats (Stroke Trip: A & E Inverters)

Blink Blink OFF Blink Blink OFF

- Purpose: Prevent abnormally long piston strokes.

- Case 1. If compressor doesn't work and LED blinks - Cause: Possibly harness from compressor to PCB might be defective.

- Case 2. If compressor works intermittently and LED blinks - Cause: Condenser Fan or Freezer Fan is not running. Sealed system problem such as moisture restriction, restriction at capillary tube or refrigerant leak.

- Logic: Compressor is forced to off and then tries to restart after 1 minute.

[ Protection I _1 Blink 2 times I

logic

Check B FI (Stroke Trip)Check B2 I N _.[

L_J _ ' J/ i

Driver PCB N .._ompressor_Y

I Check Procedure ]

Fix Harness I

.,, _ _ Compressor ,_,, N_j

"_ Damage _ Replace

Protection Logic

Capacitor

Replace ]

,_ ,,- _ Compressor

,, _,Check C ,- _

- 54 -

B3. LED blinks five times, then repeats (Locked Piston: A & E Inverters)

Blink Blink Blink Blink Blink OFF

Purpose: To detect locked piston Cause: Lack of oil to the cylinder, cylinder or piston damaged and or restricted discharge.

A Locked Piston can also be caused by foreign materials inside the compressor.

Logic: Compressor is forced off and tries to restart within 2.5 minutes.

Protection

logic

Check B

B,lnkStlmesI I ReplaceI

(Lock Piston Trip) Check B3 I I Compressor j

[ CheckRprPoeca:dur_-_ _ 1< N

Protection Logic

B4. LED blinks six times, then repeats (Current Trip: A & E=lnverters)

Blink Blink Blink Blink Blink Blink OFF

Purpose: Prevent over-current (overload protect) Cause: Ambient temperature is high (over 43°C) and/or refrigerator's condenser air movement is restricted. Condenser Fan is stopped, restricted discharge line, compressor is damaged, or IPM device is defective. Logic: Compressor is forced off and tries to restart after 6 minutes.

Protection y NG

.' ] .i Blink 6 time _v. _NG_[ Rep,acei

CIhOgclkB [_ (Current Trip) Check B4 _ Capacitor

[ Repeat ] N _ _ ........... t tri n-'"_"'-_._ _/., ..... _ , [ Replace

| Check Procedure _ _ uccurr _ I Power I '" _.CheckC3 _ _ _ _ _ Compressor

_ -_ ._ _ _. I ,,. Damage _l

,. _dom sop-- .. NG

Protection Logic

]

- 55 -

B5. LED blinks seven times, then repeats (IPM Fault: A & E Inverters)

Blink Blink Blink Blink Blink Blink Blink OFF

- Purpose: Prevent high current due to IPM Short

- Cause: Damaged IPM (Dead Short)

- Test for a dead short at Point A with a VOM.

- Logic: Compressor is forced off and tries to restart in 20 minutes.

logic

I Protection _[

Check B

Protection Logic

- 56 -

12-3 Check C

01. Harness Connection Check

02. Capacitor Specifications

C3. Compressor Check

Step 1. Power off. Step 2. Check capacitor spec. (table1). Step& Check resistance of point A

Step 4. Check wire harness (INF ohm). Step 5. Check resistance at point B. Step 6. Point D.

Compressor

._[ Replace

Check Process

Connecting

Harness 1

Caution Turn off power during checkC 1

]

Measure the resistance at each point except point C Dead short check: measure the resistance between power line in compressor and earth ground in refrigerator (Inf. Ohm)

Multi

Tester

"J ,

Po: Power Co: Common N/C: Open terminal

l 1

Because of ambient temperature or operating situations, the values shown can have a slight

!!iii_i

- 57 -

Hermetic terminal

12-4 Check D

DI. Activate Protection logic Cycle check with protection logic

- We have to check Condenser fan and Freezer fan before performing Check D

- Locked Piston, Current trip and stroke trip can be activated by other problems then the driver or compressor.

I Locked piston

I Stroke trip

I Current trip

High Pressure

Side

Restricted

Side

Low

Restriction

Refrigerant

Over charging ]_I

Refrigeration

Low side ]_

leak

Refrigerant leak _

_-_When process tine on compressor is opened, and refrigerant is not expetled

because it has accumulated in condenser.

_-_ If fauk is corrected after refrigerant is recaptured from sealed system, change

dryer.

_-_Low side restriction can cause a stroke trip. _-_ If fault is corrected after refrigerant is recaptured, perform a sealed

system evacuation and dryer replacement.

--_ Check Suction Line

---* If refrigerant is overcharged and suction line temperature is lower than ambient temperature (about 5-10 degrees) or frost is present

150mm from where the suction line enters the compressor..

Temp. of compressor and discharge line is normal to stightly higher. High side pressure is normal to slightly higher than normal conditions. This is because condenser cannot condense the air

that is trapped in the condenser. The high side pressure and temperature will not mimic the low side pressures and

temperatures.

-_ Customer complains of longer run times and poor cooling performance.

--_ Lack of refrigerant can, in some incidents, cause piston over travet.

--_ Pressure of refrigerant cycle is usually higher than ambient pressure, therefore oit will flow out with the refrigerant at teak point.

D2. sealed system diagnosis

- Check as follows;

i Check Temp of

Discharge line I

and Condenser I

) No

I Sealed System t

Repair leak

at point where _____

N using heat gun.

_ Heaw repair i

Sealed system

In/Out Leakage

Evaporator !--_

Leakage

Check frost status Evaporat

Of Evaporator Heat Inlet tubing

o_ Frost onl_ 1

IsealedSystemI

Welding point

1. Comp process stub,

2. Comp discharge

3. Hot Line inlet

4. Drier inlet

5. Drier outlet

6. Evaporator inlet

7. Evaporator outlet

8. suction pipe

- 58 -

Step 1) Open PWB cover 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

- 59 -

No LED operating condition Service guideline

LED two - time repetiton (Stroke Trip)

•.on - on - off - on - on - off - on - on - off .. repeating

Cause

PCB Parts defect or

Compress

Connector miss

connecting (Piston over run)

Please check, Whether connector of

compressor is attached rightly or not. after power off

After the first action, You check on normal

operation of compressor.

Ifthe same symptom arises after the second

action, replace PCB

After resetting power, check if it is running

LED five - time repetiton (Piston Lock Trip)

Piston constraint

•.on - on - on - on - on - off- on - on - on - on - on - off .. repeating 3.

normal

Ifthe same symptom arises after the first

action Ifthe same symptom

arises after the second action, replace compressor

After resetting power, check if it is running

LED six - time repetiton (Current Trip) Circuit

over 2. current

error

•.on - on - on - on - on - on - off - on - on - on - on - on - on - off • •repeating Or cycle 3. error

normal Ifthe same symptom

arises after the first action

Ifthe same symptom arises after the second

action, replace compressor

LED seven- time repetiton (IPM Fault Trip)

•.on - on - on -on - on - on - on -off - on - on -on - on - on - on- on - off ,,repeating

- 60 -

PCB parts defect

(IPM)

1. After resetting power, check if it is running

normal

2. If the same symptom arises after the first

action, replace PCB

12-2 SERVICE DIAGNOSIS CHART

COMPLAINT POINTS TO BE CHECKED REMEDY

No Cooling. • Is the power cord unplugged from the outlet? • Plug into the outlet.

• Check if the power switch is set to OFF. • Set the switch to ON.

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

• Measure the voltage of the power outlet. • If the voltage is low, correct the wiring.

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

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.

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

• • Place the unit away from these heat sources.

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.

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

is faulty.

The system

the Thermistor is

,_ The operation of

incorrect.

- 61 -

defrosting circuit.

Check Components of the

system repair.

_, Perform sealed

J, Replace the Thermistor.

12-3 REFRIGERATION CYCLE

T Troubleshooting Chart

CAUSE

PARTIAL LEAKAGE

COMPLETE

m LEAKAGE

_ CLOG if)

m t2J

._ WHOLE _ CLOG

c o9

-t

MOISTURE CLOG

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.

Cooling operation 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

OFTHE

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.

REMARKS

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-

2°

"_J -rl

Mmo

o_ -_ NO COMP- _ m_ RESSION

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.

- 62 -

12-3-1 SEALED SYSTEM DIAGNOSIS

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

"Not Cooling" Complaint

problem has been isolated to sealed system area

__ None

Test

Very Slow "_

r Very Fast

Hotter than Normal

Room Temperature I r

Trace of Oil

Yes

g--a:m

_ soCapTube

und

Faint "%1

_' None to Weak

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

- 63 -

13.OPERATIONPRINCIPLEANDREPAIRMETHODOFICEMAKER

13-1 OPERATION PRINCIPLE 13-1-1 Operation Principle of IceMaker

• Adjusts EJECTOR to Start Position with power on.

• Waits until water becomes ICE after starting the icemaking operation.

• Runs MOTOR to drop ice from the tray into the ICE BIN. (During harvest mode, check if the ice bin is full)

• Reaches Start Position

• Performs Ice Making Mode after supplying water by operating the SOLENOID in ICE VALVE.

• To operate LINE and SERVICE, press and hold the Fill Key for 3 seconds. The icemaker will run through 3 stages: Harvest _ Fill _ Icemaking.

1. Turning the Icemaker stop switch off (O) stops the ice making function.

2. Setting the Icemaker switch to OFF and then turning it back on will reset the icemaker control.

Switch

jector

Cube Size Indicator Light

Test Button

Hole(use tool like pin end of tool have to smooth) pin,

Shutoff Arm

- 64 -

13-2 ICE MAKER FUNCTIONS

13-2-1 Icemaking Mode

1. Icemaking refers to the freezing of supplied water in the ice tray. Complete freezing is assured by measuring the temperature of the Tray with Icemaking SENSOR.

2. Icemaking starts after completion of the water fill operation.

3. The Ice Making function is completed when the sensor reaches 19°F (-7°C), 55 minutes after starting.

NOTE : After Icemaker Power is ON, the Icemaker heater will be on for test for 6 sec.

13-2-2 Harvest Mode

1. Harvest (Ice removing) refers to the operation of dropping ices into the ice bin from the tray when icemaking has completed.

2. Harvest mode: (1)The Heater is ON for 30 seconds, then the motor starts.

(2)The feeler arm senses the quantity of ice in the ice storage bin while rotating with the EJECTOR.

A. Ice storage bin is full : The EJECTOR stops (heater off).

B. Ice storage bin is not full : The EJECTOR rotates twice to open for ice.

•_ If the EJECTOR does not rotate once within 5 minutes in B mode, separate heater control mode starts operating to prevent the EJECTOR from being constrained. (It is recommended that the user open for ice to return to normal mode.

13-2-3 Fill/Park Position

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

2. The amount of water is adjusted by pressing the Fill Key repeatedly. This changes the time allowed for fill as illustrated in the table below.

Water supply amount TABLE

STAGE TIME TO SUPPLY

5 sec.

5.5 sec.

(FIRST STAGE)

6 sec.

INDICATIONS REMARKS

The water amount will vary depending on the water control Switch setting, as well as the water pressure of the connected

water line.

- 65 -

13-2-5 Function TEST

1. This is a forced operation for TEST, Service, cleaning, etc. It is operated by pressing and holding the Fill Key for 3seconds.

2. The test works only in the Icemaking Mode. It cannot be entered from the Harvest or Fill mode.

3. Caution! If the test is performed before water in the icemaker is frozen, the ejector will pass through the water. When the Fill mode begins (Stage 4), unless the water supply has been shut off, added water will overflow into the ice bin. If the

control doesn't operate normally in the TEST mode, check and repair as needed.

4. After water is supplied, the normal CYCLE is followed : icemaking _ Harvest _ Park Position _ Fill.

5. Five seconds after Stage 5 is completed, the Ice Maker returns to MICOM control. The time needed to supply water resets to the pre- test setting.

Diagnosis TABLE

STAGE ITEMS

HEATER

MOTOR

HALL IC I

HALL IC II

VALVE

Reset

INDICATOR

Return to Status prior to

TEST MODE

REMARKS

Five seconds after heater starts, a heater will go off if the temperature by sensor is higher than 10°C

Five seconds after heater starts, you can confirm that a motor is moving.

Check if Ice Bin is full or not. If Ice bin is full, the motor and heater are

off and on stand by until Ice bin is empty. You can confirm HALL IC detection of

start position.

Two seconds after detection of start position, you can confirm that valve is on.

Five seconds after fifth stage is completed, The icemaker resets to initial

status.

13-3 DEFECT DIAGNOSIS FUNCTION

13-3-1 ERROR CODES shownon Ice Maker water supply control panel

NO DIVISION INDICATOR CONTENTS REMARKS

1 Normal Mark time to supply None Display switch operates

properly

Icemaking _ Make sure that the wire on

2 Sensor _ Open or short-circuited wire each sensor is connected.

malfunction

- 66 -

14.DESCRIPTIONOF FUNCTION & CIRCUITOF MICOM

14-1 FUNCTION 14-1-1 Function

1. When the appliance is plugged in, it is set to 37°F for Refrigerator and O°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.

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 Freezer Temp and the Fridge 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. 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.

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. Water Filter icon turn on to tell you need to replace the filter soon.

4. After replacing the filter, press and hold the lock button more than 3 seconds.

Water Filter icon turn off with reset status.

Classification

Filter Status

Display

Ex) Inselecting Ex) Inselecting

"LOCK.... LOCK"again

In initial Power On Replace indicator

/ Filter RESET light on

_!ii_!i_:_!_iiii_iiiiiiiii_ii_iii!!_ii!_!ii!i!_!iiiiii_ii_iiiiii_ii_iiiiiiii_!!_ii_iii_iiiiiiiiiii

;;;;;;;;;; iL7

- 67 -

14-1-5 ICE PLUS selection

Please select this function for quick freezing.

• Function is repeat ICE PLUS Icon whenever pressing ICE PLUS button.

• ICE PLUS function automatically turns off after a fixed time passes.

14-1-6 Dispenser use selection You can select water or ice.

;_ Select water or ice cubes by cycling through the selections when pressing the

DISPENSER button,

;_ Hold your cup in the dispenser for a few seconds after dispensing ice or water to allow the

last pieces of ice or drops of water to fall into the cup.

;_ When after initially establishing the water comes out, the water tank inside fills and until at

the time of quality the hour is caught.

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 ICE PLUS, 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, ICE PLUS. Normal speed (2400RPM) : General working conditions.

5. Fan motor stops when refrigerator or freezer door opens.

P_eStcSing[I I

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)

- 68 -

14-1-10 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 LCD 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 LCD 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 ICE PLUS 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 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 90 minutes, ICE PLUS will run for two hours after

the defrost is completed.

(3) If ICE PLUS is pressed during defrost, ICE PLUS LCD 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.

(5) The fan motor in the freezer compartment runs at high speed during ICE PLUS.

6. For the rest of the 21 hours, the freezer will be controlled at the lowest temperature.

14-1-11 Alarm for Open Door

1. This feature sounds a buzzer when the freezer or refrigerator door is not closed within 1 minute after it is opened.

2. One minute after the door is opened, the buzzer sounds three times each for 1/2 seconds. These tones repeat every 30seconds.

3. The alarm is cancelled when the freezer or the refrigerator is closed while the buzzer sounds.

Freezer Door

or Refrigerator

Door

Buzzer

Closed

Open

Within 1 min. 1 min.

Closed

Open

Closed

3 Times 3 Ti::mes 3 Times 3 Times

30sec ' 30sec 30sec '

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.

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

3. All freezing units do not work at the display mode. (Exceptions : Display, Lamp)

- 69 -

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 1hours, 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.

;_ LED check function: If simultaneously pressing ICE PLUS button and freezing temperature adjustment button for a

second, display LED graphics on. If releasing the button, the LED graphic displays the previous status.

- 70 -

13. EXPLODED VIEW & REPLACEMENT PARTS LIST

CASE PARTS

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

(310B;,

-1-

FREEZER PARTS

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

-2-

REFRIGERATOR PARTS

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

-3-

DOOR PARTS

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

,230B

,231B

/24i

244A ;

$25 )

/ •

_:i!iii!i!i}!!!::,

250A

-4-

_201Bt

249J

DISPENSER PARTS

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

I" I

@ ""

I I

-5-

ICE & MAKER PARTS

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

623B

16J:

616D

ICE BANK PARTS

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

-7-

LG El÷ n_cs into

P/No. MFL48178836 MAY., 2011 Printed in Korea

LG LMX25964 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual