LG LRSC21934xx Service Manual

CAUTION

PLEASE READ CAREFULLY THE SAFETY PRECAUTIONS OF THIS BOOK BEFORE CHECKING OR OPERATING THE REFRIGERATOR.

REFRIGERATOR

SERVICE MANUAL

MODEL: LRSC21934SW

COLOR:

http://biz.lgservice.com

Ref. No. GR-L217BVK

SUPER WHITE

WARNINGS AND PRECAUTIONS FOR SAFETY ................................................................................................................ 3

SPECIFICATIONS................................................................................................................................................................... 4

PARTS IDENTIFICATION..................................................................................................................................................... 12

HOW TO INSTALL THE REFRIGERATOR.......................................................................................................................... 18

HOW TO ADJUST DOOR HEIGHT OF THE REFRIGERATOR........................................................................................ 18

HOW TO INSTALL WATER PIPE........................................................................................................................................19

HOW TO CONTROL THE AMOUNT OF WATER SUPPLIED TO THE ICEMAKER......................................................... 23

MICOM FUNCTION .............................................................................................................................................................. 25

EXPLATION FOR MICOM CIRCUIT..................................................................................................................................... 34

EXPLANATION FOR PWB CIRCUIT ..................................................................................................................................34

COMPENSATION CIRCUIT FOR WEAK-COLD, OVER-COLD AT FREEZING ROOM.....................................................49

PWB PARTS DRAWING AND LIST ....................................................................................................................................53

PWB CIRCUIT DIAGRAM...................................................................................................................................................63

ICE MAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD.......................................................... 67

WORKING PRINCIPLES.....................................................................................................................................................67

FUNCTION OF ICE MAKER...............................................................................................................................................68

ICE MAKER TROUBLESHOOTING....................................................................................................................................71

ICE MAKER CIRCUIT PART...............................................................................................................................................72

CIRCUIT................................................................................................................................................................................ 73

TROUBLE DIAGNOSIS........................................................................................................................................................ 75

TROUBLE SHOOTING ...................................................................................................................................................... 75

FAULTS .............................................................................................................................................................................. 85

COOLING CYCLE HEAVY REPAIR................................................................................................................................. 102

HOW TO DEAL WITH CLAIMS........................................................................................................................................ 109

HOW TO DISASSEMBLE AND ASSEMBLE..................................................................................................................... 114

DOOR............................................................................................................................................................................... 114

HANDLE ........................................................................................................................................................................... 115

SHROUD, GRILLE FAN ................................................................................................................................................... 115

ICEMAKER....................................................................................................................................................................... 115

DISPENSER..................................................................................................................................................................... 116

WATER TANK AND WATER LINE.................................................................................................................................... 118

HOME BAR....................................................................................................................................................................... 118

EXPLODED VIEW............................................................................................................................................................... 119

REPLACEMENT PARTS LIST........................................................................................................................................... 128

CONTENTS

- 2 -

Please observe the following safety precautions in order to use safely and correctly the refrigerator and to prevent accident and danger during repair.

1. Be care of an electric shock. Disconnect power cord from wall outlet and wait for more than three minutes before replacing PWB parts. Shut off the power whenever replacing and repairing electric components.

2. When connecting power cord, please wait for more than five minutes after power cord was disconnected from the wall outlet.

3. Please check if the power plug is pressed down by the refrigerator against the wall. If the power plug was damaged, it may cause fire or electric shock.

4. If the wall outlet is over loaded, it may cause fire. Please use its own individual electrical outlet for the refrigerator.

5. Please make sure the outlet is properly earthed, particularly in wet or damp area.

6. Use standard electrical components when replacing them.

7. Make sure the hook is correctly engaged. Remove dust and foreign materials from the housing and connecting parts.

8. Do not fray, damage, machine, heavily bend, pull out, or twist the power cord.

9. Please check the evidence of moisture intrusion in the electrical components. Replace the parts or mask it with insulation tapes if moisture intrusion was confirmed.

10. Do not touch the icemaker with hands or tools to confirm the operation of geared motor.

11. Do not let the customers repair, disassemble, and

reconstruct the refrigerator for themselves. It may cause accident, electric shock, or fire.

12. Do not store flammable materials such as ether, benzene, alcohol, chemicals, gas, or medicine in the refrigerator.

13. Do not put flower vase, cup, cosmetics, chemicals, etc., or container with full of water on the top of the refrigerator.

14. Do not put glass bottles with full of water into the freezer. The contents shall freeze and break the glass bottles.

15. When you scrap the refrigerator, please disconnect the door gasket first and scrap it where children are not accessible.

WARNINGS AND PRECAUTIONS FOR SAFETY

- 3 -

SPECIFICATIONS

- 4 -

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 894(W)X875(D)X1753(H) NET WEIGHT (kg) 128 COOLING SYSTEM Fan Cooling TEMPERATURE CONTROL Micom Control DEFROSTING SYSTEM Full Automatic

Heater Defrost INSULATION Cyclo-Pentane COMPRESSOR P.T.C. Starting Type EVAPORATOR Fin Tube Type CONDENSER Wire Condenser REFRIGERANT R134a (180g) LUBRICATING OIL FREOL @10G (310 cc) CAPILLARY TUBE ID 0.83 DRIER MOLECULAR SIEVE XH-7

ITEMS SPECIFICATIONS

FIRST DEFROST 4 - 5 Hours DEFROST CYCLE 13 - 15 Hours DEFROSTING DEVICE Heater, Sheath ANTI SWEAT HEATER Dispenser Duct Door Heater

Dispenser Heater

Home Bar Heater ANTI-FREEZING HEATER Damper Heater FREEZER LAMP 40W (1 EA) REFRIGERATOR LAMP 40W (1 EA) DISPENSER LAMP 15W (1 EA)

1. Ref No. : GR-P257

1753

948 894

687

747

796

875

1220.5

SPECIFICATIONS

- 5 -

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 894(W)X790(D)X1753(H) NET WEIGHT (kg) 120 COOLING SYSTEM Fan Cooling TEMPERATURE CONTROL Micom Control DEFROSTING SYSTEM Full Automatic

2. Ref No. : GR-P217

ITEMS SPECIFICATIONS

FIRST DEFROST 4 - 5 Hours DEFROST CYCLE 13 - 15 Hours DEFROSTING DEVICE Heater, Sheath ANTI SWEAT HEATER Dispenser Duct Door Heater

Dispenser Heater

Home Bar Heater ANTI-FREEZING HEATER Damper Heater FREEZER LAMP 40W (1 EA) REFRIGERATOR LAMP 40W (1 EA) DISPENSER LAMP 15W (1 EA)

1753

948 894

602

662

711

790

1135.5

SPECIFICATIONS

- 6 -

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 894(W)X875(D)X1753(H) NET WEIGHT (kg) 125 COOLING SYSTEM Fan Cooling TEMPERATURE CONTROL Micom Control DEFROSTING SYSTEM Full Automatic

ITEMS SPECIFICATIONS

DRIER MOLECULAR SIEVE XH-7 FIRST DEFROST 4 - 5 Hours DEFROST CYCLE 13 - 15 Hours DEFROSTING DEVICE Heater, Sheath ANTI SWEAT HEATER Dispenser Duct Door Heater

Dispenser Heater ANTI-FREEZING HEATER Damper Heater FREEZER LAMP 40W (1 EA) REFRIGERATOR LAMP 40W (1 EA) DISPENSER LAMP 15W (1 EA)

3. Ref No. : GR-L257

1753

948 894

687

747

796

875

1220.5

SPECIFICATIONS

- 7 -

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 894(W)X790(D)X1753(H) NET WEIGHT (kg) 117 COOLING SYSTEM Fan Cooling TEMPERATURE CONTROL Micom Control DEFROSTING SYSTEM Full Automatic

4. Ref No. : GR-L217

ITEMS SPECIFICATIONS

DRIER MOLECULAR SIEVE XH-7 FIRST DEFROST 4 - 5 Hours DEFROST CYCLE 13 - 15 Hours DEFROSTING DEVICE Heater, Sheath ANTI SWEAT HEATER Dispenser Duct Door Heater

Dispenser Heater ANTI-FREEZING HEATER Damper Heater FREEZER LAMP 40W (1 EA) REFRIGERATOR LAMP 40W (1 EA) DISPENSER LAMP 15W (1 EA)

1753

948 894

602

662

711

790

1135.5

SPECIFICATIONS

- 8 -

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 894(W)X875(D)X1753(H) NET WEIGHT (kg) 117 COOLING SYSTEM Fan Cooling TEMPERATURE CONTROL Micom Control DEFROSTING SYSTEM Full Automatic

ITEMS SPECIFICATIONS

FIRST DEFROST 4 - 5 Hours DEFROST CYCLE 13 - 15 Hours DEFROSTING DEVICE Heater, Sheath ANTI SWEAT HEATER Home Bar Heater ANTI-FREEZING HEATER Damper Heater FREEZER LAMP 40W (1 EA) REFRIGERATOR LAMP 40W (1 EA) DISPENSER LAMP 15W (1 EA)

1. Ref No. : GR-C257

1753

948 894

687

747

796

875

1220.5

SPECIFICATIONS

- 9 -

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 894(W)X790(D)X1753(H) NET WEIGHT (kg) 112 COOLING SYSTEM Fan Cooling TEMPERATURE CONTROL Micom Control DEFROSTING SYSTEM Full Automatic

2. Ref No. : GR-C217

ITEMS SPECIFICATIONS

1753

948 894

602

662

711

790

1135.5

SPECIFICATIONS

- 10 -

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 894(W)X875(D)X1753(H) NET WEIGHT (kg) 114 COOLING SYSTEM Fan Cooling TEMPERATURE CONTROL Micom Control DEFROSTING SYSTEM Full Automatic

ITEMS SPECIFICATIONS

DRIER MOLECULAR SIEVE XH-7 FIRST DEFROST 4 - 5 Hours DEFROST CYCLE 13 - 15 Hours DEFROSTING DEVICE Heater, Sheath ANTI-FREEZING HEATER Damper Heater FREEZER LAMP 40W (1 EA) REFRIGERATOR LAMP 40W (1 EA) DISPENSER LAMP 15W (1 EA)

3. Ref No. : GR-B257

1753

948 894

687

747

796

875

1220.5

SPECIFICATIONS

- 11 -

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 894(W)X790(D)X1753(H) NET WEIGHT (kg) 109 COOLING SYSTEM Fan Cooling TEMPERATURE CONTROL Micom Control DEFROSTING SYSTEM Full Automatic

ITEMS SPECIFICATIONS

4. Ref No. : GR-B217

1753

948 894

602

662

711

790

1135.5

PARTS IDENTIFICATION

- 12 -

Select

Meat

Cheese

Veg.

Conversion Switch

(Meats/Vegetables)

Humidity Switch

Freezer

Compartment

Refrigerator

Compartment

Cover PWB

Cover, Lamp-R/U Shelf

Egg Box

Snack Corner (Optional)

Vegetable Box (1 or 2)

Miracle Zone (Optional)

Adjust Screw

Basket

Cover Home Bar

Cover Lamp-R/L

Shelf

Folding Shelf

Guide Bottle Wine Rack

Water Tube

Cover,Lamp -F

Shelf -F

Drawer

Cover Lower

Adjust Screw

Cover, Dairy

Ice Bank

Assembly

Ice Shelf

Assembly

Door Rack

Home Bar

Frame Display

Dispenser Lamp

Ice & Water

Dispenser Button

Cover Hinge

1. Ref No. : GR-P257, GR-P217

2. Ref No. : GR-P257, GR-P217

PARTS IDENTIFICATION

- 13 -

Select

Meat

Cheese

Veg.

Home Bar

Frame Display

Dispenser Lamp

Ice & Water

Dispenser Button

Cover Hinge

Cover PWB

Folding Shelf

Miracle Zone (Optional)

Conversion Switch

(Meats/Vegetables)

Humidity Switch

Freezer

Compartment

Refrigerator

Compartment

Cover, Lamp-R/U Shelf

Egg Box

Snack Corner (Optional)

Vegetable Box (1 or 2)

Adjust Screw

Basket

Cover Home Bar

Cover Lamp-R/L

Shelf

Guide Bottle Wine Rack

Shelf -F

Drawer

Cover Lower

Adjust Screw

Cover, Dairy

Cover,Lamp -F

Ice Bank

Assembly

Ice Shel

Assembly

Door Rack

PARTS IDENTIFICATION

- 14 -

Frame Display

Dispenser Lamp

Ice & Water

Dispenser Button

Cover Hinge

Cover PWB

Water Tube

Folding Shelf

Miracle Zone (Optional)

Select

Meat

Cheese

Veg.

Humidity Switch

Freezer

Compartment

Refrigerator

Compartment

Conversion Switch

(Meats/Vegetables)

Cover, Lamp-R/U Shelf

Egg Box

Snack Corner (Optional)

Vegetable Box (1 or 2)

Adjust Screw

Basket

Cover Lamp-R/L

Shelf

Guide Bottle Wine Rack

Shelf -F

Drawer

Cover Lower

Adjust Screw

Cover, Dairy

Cover,Lamp -F

Ice Bank

Assembly

Ice Shelf

Assembly

Door Rack

3. Ref No. : GR-L257, GR-L217

4. Ref No. : GR-L257, GR-L217

PARTS IDENTIFICATION

- 15 -

Select

Meat

Cheese

Veg.

Frame Display

Dispenser Lamp

Ice & Water

Dispenser Button

Cover Hinge

Cover PWB

Water Tube

Miracle Zone (Optional)

Humidity Switch

Freezer

Compartment

Refrigerator

Compartment

Conversion Switch

(Meats/Vegetables)

Cover, Lamp-R/U Shelf

Egg Box

Snack Corner (Optional)

Vegetable Box (1 or 2)

Adjust Screw

Basket

Cover Lamp-R/L

Shelf

Folding Shelf

Guide Bottle Wine Rack

Shelf -F

Drawer

Cover Lower

Adjust Screw

Cover, Dairy

Cover,Lamp -F

Ice Bank

Assembly

Ice Shelf

Assembly

Door Rack

PARTS IDENTIFICATION

- 16 -

Cover PWB

Cover Hinge

Home Bar

Frame Display

Cover, Lamp-R/U Shelf

Egg Box

Snack Corner (Optional)

Vegetable Box (2 or 3)

Adjust Screw

Basket

Cover Home Bar

Shelf

Folding Shelf Cover, Lamp-R/L

Guide Bottle Wine Rack

Cover, Dairy

Control Box,R

Conversion Switch

(Meats/Vegetables)

Humidity Switch

Freezer

Compartment

Refrigerator

Compartment

Cover Lower

Adjust Screw

Shelf -F

Drawer

Triple & Movable

Twist Ice Tray

1. Ref No. : GR-C257, GR-C217

PARTS IDENTIFICATION

- 17 -

Cover PWB

Cover Hinge

Frame Display

Cover, Lamp-R/U Shelf

Egg Box

Snack Corner (Optional)

Vegetable Box (2 or 3)

Adjust Screw

Basket

Shelf

Folding Shelf Cover, Lamp-R/L

Guide Bottle Wine Rack

Cover, Dairy

Control Box,R

Conversion Switch

(Meats/Vegetables)

Humidity Switch

Freezer

Compartment

Refrigerator

Compartment

Cover Lower

Adjust Screw

Shelf -F

Drawer

Triple & Movable

Twist Ice Tray

3. Ref No. : GR-B257, GR-B217

1. How to Adjust Door Height of Refrigerator

■ Make the refrigerator level first. (If the refrigerator is not installed on the flat floor, the height of freezer and refrigerator door may not be the same.)

1. If the height of freezer door is lower than that of refrigerator compartment :

2. If the height of freezer door is higher than that of refrigerator compartment :

Insert a driver  into the groove  of adjusting screw and rotate driver in arrow direction (clockwise) until the refrigerator becomes horizontal.

HOW TO INSTALL REFRIGERATOR

- 18 -

Adjusting Screw

Driver

Height

Difference

Height Difference

2. How to Install Water Pipe

■ Before Installation

1. The icemaker requires the water pressure of 1.5 -

8.5kgf/cm

. (It is acceptable if city water fills a cup of

180cc with water for 3 seconds)

2. Install booster pump where the city water pressure is below 1.5kgf/cm

for normal operation of water and ice

dispenser.

3. The total length of water pipe shall be less than 12m. Do not bend the pipe at right angle. If the length is more than 12m, there will be troubles on water supply due to water pressure drop.

4. Please install water pipe where there is no heat around.

2-1. When connecting directly to the water tap.

■ Please confirm the following installation parts.

HOW TO INSTALL REFRIGERATOR

- 19 -

Class. Shape and Spec. Nomenclature P/No Remarks

Valve Feed 5221JA3001A Common Use

Connector, (MECH) Pipe 4932JA3003A Conversion Connector(3/4") 6631JA3004A

No Holes

Balance Conector(3/4") 6631JA3004B Packing(ø24x3t) 3920JA3001B

Connector, (MECH) Pipe 4932JA3003B

Conversion Connector(W25) 6631JA3004C

No Holes

Balance Conectoor(W25) 6631JA3004D Packing(ø23x3t) 3920JA3001A

Connector, (MECH) Pipe 4932JA3003C Conversion Connector(W28) 6631JA3004E

No Holes

Balance Conector(W28) 6631JA3004F Packing(ø26x3t) 3920JA3001C

Connector, (MECH) Pipe 4932JA3003D Conversion Connector(1/2") 6631JA3004G No Holes Balance Conector(1/2") 6631JA3004H Packing(ø19x3t) 3920JA3001D

Convertible Water Valve

Water Connector

Valve Feed Rubber, Packing Connector, Pipe

Tape, TeflonConnector, Pipe

1. Connection of Pipe Connector A and B.

1) Turn off main valve of water pipe.

2) Disconnect water tap from piping by loosening nuts.

3) Connect pipe connector A and B to piping after sealing the pipe connector with sealing tapes.

4) Connect feed valve to pipe connector A.

5) If there is only one tap water pipe, connect pipe connector A only and install feed pipe.

2. Water Supply

1) After the installation of feed water, plug the refrigerator to the earthered wall outlet, press the water dispenser button for 2 - 3 minutes, and confirm that the water comes out.

Caution : • Feed pipe should be connected to cold water

line. If it is connected to hot water line, trouble may occur.

• Please check rubber packing when connecting feed pipe.

2) Check leakage at connecting part, then arrange water tube and locate the refrigerator at its regular place if there is no leaking.

HOW TO INSTALL REFRIGERATOR

- 20 -

Single Lever Type Faucet (general)

Feed

Valve

General Type

Feed

Valve

Two Hands Type Faucet Single Lever Type Faucet (one

hole, tech type and hand spray)

Feed

Valve

Feed

Valve

Pipe Connector B

Hot Water

Pipe Connector A

Feed

Valve

Cold Water

How to wind

Sealing Tapes.

Water Tube

Nut

3. When customer uses bottled water.

*If customer wants to use bottled water, extra pump should be installed as shown below.

1. The pump system should not be on the floor (it may cause noise and vibration). Securely fasten the inlet and outlet nuts of pump.

2. If there is any leakage after installation, cut the water tube at right angle and reassemble.

3. When put the water tube end into the bottle, leave a clearance between bottle bottom and water tube end.

4 Check water coming out and any leakage.

Caution : • If feed tube is more than 4m, less water will come out due to pressure drops.

• Use standard feed tube to prevent leaking.

■ Outternal Filter

1. Filter Fixation

1) Connect feed tube to the filter outlet and water valve connecting tube.

2) Fix the filter at proper place around the sink where it is easy to replace the filter and to receive the cleaning water. Please consider the length of tube shall be less than 12m when locating filter.

3) When fixing the filter, use fixing plate and cable depending on the surrounding conditions.

2. Filter Cleaning

1) Connect feed tube to the inlet of feed valve and filter.

2) Clean the main valve and feed valve with water for at least one minute until clean water comes out.

HOW TO INSTALL REFRIGERATOR

- 21 -

Water Tube

Nut

Inlet

Outlet

Fixing Plate Fixing Plate

Fixing Cable

Water

Filter

Filter Inlet

Feed Valve

Hot Water

Cold Water

■ Install Water Filter (Applicable to some models only)

■ Before Installing water filter

1. Before installing the filter, take out the top shelf of the refrigerator after tilting it to the direction () and lifting it to the direction () and move it to the lower part.

2. Remove the lamp cover by pressing the protrusion under the cover and pulling the cover to the front.

■ Installing water filter

1. Initial installation of water filter Remove the filter substitute cap by turning it counterclockwise () by 90 degrees and pulling it down.

Note : Keep it safe to use it later when you do not use the

filter.

Remove the red cap from the filter and attach the sticker. Insert the upper part of the filter () after aligning with the guideline marked on the control box, and fasten it by turning it clockwise by 90 degrees.

Note : Check that the guideline and the fastening

indication line are aligned.

2. Replacement of water filter While holding the lower part of the filter, turn it counterclockwise () by 90 degrees and pull it down.

Note : Check that the guideline and the loosening

indication line are aligned.

■ After installing water filter

Reassemble the lamp cover and the top shelf of the refrigerator. To place the top shelf of the refrigerator, raise the front part of the shelf a bit so that the hook of the shelf is fit into the groove. In order to clean the water filter system, drain water for about 3 min.

Note : Then open the door of the refrigerator and check for

water droppings on the shelf under the filter.

HOW TO INSTALL REFRIGERATOR

- 22 -

Control box

Aligning with the guide line and the fastening indication line

Control box

Aligning with the guide line and the loosening indication line

Separation of red cap

Adhesion sticker

Substitute cap

3. How to Control the Amount of Water Supplied to Icemaker.

3-1. Confirm the amount of water supplied to the icemaker.

1. Pull out the ice bank in the upper part of the freezer compartment.

Caution : • Do not put hands or tools into the chute to confirm

the operation of geared motor. it may damage refrigerator or hurt hands.)

• Check the operation of motor with its operation noise.

2. Apply electricity after connecting water pipe.

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

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

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

4) When ice tray rotates, the water in it will spill. Collect the spilt water and throw away into the sink.

5) When ice tray has finished rotation, water comes out from the water tube. Confirm the amounts of water in the ice tray. (refer to fig. The optimum amount of water is 110cc)

* It is acceptable if the adjusted level of water is a bit smaller than optimum level.

HOW TO INSTALL REFRIGERATOR

- 23 -

Test Switch

Confirm the amount

of water

Ice maker

Too much

Too little

Optimum level

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

icemaker.

Caution : • Please unplug the power cord from the wall

outlet and wait for more than three minutes before disconnecting PWB cover as 310V is applied in the control panel.

1. Disconnect PWB cover from the upper part of the refrigerator.

2. Adjust the amount of water supplied by using DIP switch.

■ Water Supplying Time Control Option

1) The water supplying time is set at five seconds when the refrigerator is delivered.

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

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

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

Caution : When adjusting the amount of water supplied,

adjust step by step. Otherwise the water may spill over.

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

HOW TO INSTALL REFRIGERATOR

- 24 -

SWITCH NO Water Suppling

S/W1 S/W2 S/W3 Time

OFF OFF OFF 6.5 Sec.

ON OFF OFF 5.5 Sec.

OFF ON OFF 6 Sec.

ON ON OFF 7 Sec.

OFF OFF ON 7.5 Sec.

ON OFF ON 8 Sec.

OFF ON ON 9 Sec.

ON ON ON 10 Sec.

(+) Driver

Switch ON Switch OFF

Confirm the amount

of water

Optimum level

1. Monitor Panel

1-1. GR-P257, GR-P217, GR-L257, GR-L217

1-2. GR-C257, GR-C217, GR-B257, GR-B217

2. Description of Function

2-1-1. Funnction of Temperature Selection

* The temperature can vary ±3 °C depending on the load condition.

❉ Whenever pressing button, setting is repeated in the order of (Medium) ➝ (Medium Max) ➝ (Max) ➝ (Min) ➝

(Medium Min).

• The actual inner temperature varies depending on the food status, as the indicated setting temperature is a target temperature, not actual temperature within refrigerator.

• Refrigeration function is weak in the initial time. Please adjust temperature as above after using refrigerator for minimum 2~3 days.

MICOM FUNCTION

- 25 -

Express Freezer

Dispenser selection button

Temperature adjustment button for freezer compartment

Lock button

Filter reset button

Temperature adjustment button for refrigerator compartment

EXPRESS FRZ DISPENSER FREEZER REFRIGERATOR FILTER RESET LOCK

ROOM TEMP

JET FRZ

EXPRESS FRZ

OFF

ICEBEAM

DOOR COOLING

CUBE

WATER

FRZ TEMP REF TEMP

CRUSH

°F

°C

°F

°C

5 4 3 2 1

FILTER STATUS

6 5 4 3 2 1

FILTER RESET

HOLD 3 SECS

UNLOCK

LOCK

OFF

FRZ TEMP REF TEMP ROOM TEMP

ICEBEAM DOOR COOLING

1 2 3 4 5

UNLOCK

LOCK

5 4 3 2 1

Division Power Initially On 1st Press 2st Press 3th Press 4th Press

Setting temperature

Temperature Control

Medium Medium Max Max Min Medium Min

Freezer Control

-19 °C -22 °C -23 °C -15 °C -17 °C

Refrigeration

3 °C2 °C0°C6 °C4 °C

Control

5 4 3 2 1

2-1-2. LCD Back Light Control

1. In order to easily view display status on the LCD, LCD Back Light is turned on for a minute in application of initial power, for a minute in button manipulation and for a minute after closing time from opening time of door.

2. If pressing any display button once with the backlight turned off, buzzer rings and button function is not performed but only backlight is turned on (If pressing the first button with the back light turned off, only back light ON function is performed).

3. If pressing the special freezing button and the freezing temperature adjustment button for more than a second, the back light is turned on and all the graphics of LCD are turned on. If releasing the button, the LCD graphic is displayed in the previous status and the back light is turned off (check LCD graphic and back light ON/OFF status).

2-1-3. Outside temperature display function

1. Outside temperature sensor at the left U of refrigerator senses ambient temperature and displays the outside temperature in the left side of “Outside temperature” text on the LCD of the display part.

2. Ambient temperature is displayed up to -9°C ~ 49°C and displayed as “Lo” for less than -10°C and as “HI” for more than 50°C. If the ambient temperature sensor fails, it is displayed as “Er”.

3. Since display temperature of outside temperature is temperature sensed by the ambient sensor in the hinge U of the freezing room, it may differ from the outside temperature display of other household electrical appliances.

2-1-4. Lock function (display button lock)

1. In power application of refrigerator, the only “Release” text is turned on at the right side of lock graphic of LCD with the lock release status.

2. If desiring to lock the display status and pressing the lock/release button once, “Release” text is turned off at the right side of lock graphic of LCD and “Lock” text is turned on with lock status.

3. The buzzer sound and function is not performed even if pressing display button other than lock/release key in the lock status.

4. If desiring to release the lock status and pressing the lock/release button once, “Lock” text is turned off at the right side of lock graphic of LCD and “Release” text is turned on with lock release status.

2-1-5. Filter condition display function

1. As demonstrated below, it displays the months left in units of 30 days until the filter replacement is required, starting from when the refrigerator power usage is authorized.

2. After 6 months, the following sentence and will appear on the filter condition part of the LCD. "Press for 3 seconds after replacing filter"

3. After 6 months have passed, and if the filter has been replaced or you want to reset the filter condition display, press the filter replacement button for more than 3 seconds and it will reset to the initial Power On state.

MICOM FUNCTION

- 26 -

FILTER RESET HOLD 3 SECS

Classification

Filter Status

Display

In initial

Power On

FILTER STATUS

6 5 4 3 2 1

Pass of

a month

FILTER STATUS FILTER STATUS FILTER STATUS FILTER STATUS FILTER STATUS FILTER STATUS

6 5 4 3 2 1

Pass of

2 months

Pass of

3 months

6 5 4 3 2 1

Pass of

4 months

Pass of

5 months

6 5 4 3 2 1

Pass of

6 months

FILTER RESET

HOLD 3 SECS

6 5 4 3 2 1

2-2. Dispenser use selection

You can select water or ice.

❉ Please select water, slice ice and square ice by pressing button as you desire. ❉ Please press the push button lightly by catching and pushing in cup.

• The border line is indicated for the selected function.

• “Tak!” sounds if 5 seconds pass after ice comes out.

It is sound that the outlet of ice is closed.

REFERENCE : Please wait for 2-3 seconds in order to take final ice slices or drops of

water when taking out cup from the pressing switches after taking ice or water.

2-3. Automatic ice maker

• The automatic ice maker can automatically make 8 pieces of ice cube at a time, 80 pieces a day. But these quantities may

be varied according to various conditions including how many times the refrigerator door opens and closes.

• Ice making stops when the ice storage bin is full.

• If you don’t want to use automatic ice-maker, change the ice-maker switch to ON-OFF.

If you want to use automatic ice-maker again, change the switch to OFF-ON.

NOTE : It is normal that a noise is produced when ice made is dropped into the ice storage bin.

2-4. When ice maker does not operate smoothly

Ice is lumped together

• When ice is lumped together, take the ice lumps out of the ice storage bin, break them into small pieces, and then place

them into the ice storage bin again.

• When the ice maker produces too small or lumped together ice, the amount of water supplied to the ice maker need to

adjusted. Contact the service center.

✻ If ice is not used frequently, it may lump together.

Power failure

• Ice may drop into the freezer compartment. Take the ice storage bin out and discard all the ice then dry it and place it

back. After the machine is powered again, crushed ice will be automatically selected.

The unit is newly installed

• It takes about 12 hours for a newly installed refrigerator to make ice in the freezer compartment.

2-5. Express Freezer

Please select this function for prompt freezer.

• “On” or “Off” is repeated whenever pressing button.

• The arrow mark graphic remains at the On status after flickering 4 times when

selecting Special Refrigeration “On”.

• Super freezer function automatically turns off if a fixed time passes.

2-6. Lock

This button stops operation of different button.

• Locking or Release is repeated whenever pressing the .

• Pressing the other button when selecting ‘LOCK’, the button does not operate.

MICOM FUNCTION

- 27 -

Ex) In selecting

"On"

Ex) In selecting

"Off"

Ex) In selecting

"LOCK"

Ex) In selecting

"LOCK" again

EXPRESS FRZ

LOCK

OFF

LOCK

UNLOCK

DISPENSER

Pressing

Switch

CUBE

WATER

CRUSH

DISPENSER

EXPRESS FRZ

LOCK

2-7. Super freezing

1. Super freezing is function to improve cooling speed of the freezing room by consecutively operating compressors and freezing room fan. If pressing the super freezing button, “Turn Off” text of the LCD panel is turned off and “Turn On” is immediately turned on and “Arrow ( )” graphic is turned on after flickering once.

2. super freezing is cycled in order of Selection/ Release (“Turn On” / “Turn Off”) whenever pressing the selection button.

3. super freezing is released if power failure occurs and then returns to the original status.

4. Temperature setting is not changed even if selecting the super freezing.

5. The change of temperature setting at the freezing room or the cold storage room is allowed with super freezing selected and processed.

6. The cold storage room operates the status currently set with super freezing selected and processed.

7. If selecting the super freezing, the super freezing function is released after continuously operating compressor and freezing room fan.

8. If frost removal starting time is arrived during super freezing, super freezing operation is done only for the remaining time after completion of frost removal when the super freezing operation time passes 90 minutes. If passing 90 minutes, super freezing operation is done only for 2 hours after completion of frost removal.

9. If pressing super freezing button during frost removal, the super freezing LCD is turned on but if pressing the super freezing, compressor operates after the remaining time has passed.

10. If selecting super freezing within 7 minutes (delay for 7 minutes of compressor) after the compressor stops, compressor

operates after the remaining time has passed.

11. The freezing room fan motor operates at the high speed of RPM during operation of super freezing.

2-8. *Miracle Zone function

1. Miracle Zone is located at the bottom room of R-room and maintains optimum temperature depending on foods through selection of desired foods kept in the Miracle Zone from vegetables to meat with a display. Set temperature in the Miracle Zone by using a separate selection button at the right side of the Miracle Zone. Initial notch is in “veg.”status in application of power. Whenever pressing buttons, notch changes while LED is displayed in the order of “veg. → cheeze → meat → veg.”. Provided that selected notch LED turns off if opening doors of the R-room and it turns off if closing doors of R-room.

2. Temperature of the miracle zone is controlled with a stemping damper at the left side of the miracle zone and controlled with a miracle zone at the rear side of miracle zone.

3. Change of the notch by temperature control S/W at the miracle zone is controlled after 10 seconds have passed after selecting final notches.

4. Miracle zone damper is forcedly closed during test mode or defrost mode.

2-9. Control of variable type of freezing room fan

1. To increase cooling speed and load response speed, MICOM variably controls freezing room fan motor at the high speed of RPM and standard RPM.

2. MICOM only operates in the input of initial power or super freezing operation or load response operation for the high speed of RPM and operates in the standard RPM in other general operation.

3. If opening doors of freezing / cold storage room or home bar while fan motor in the freezing room operates, the freezing room fan motor normally operates (If being operated in the high speed of RPM, it converts operation to the standard RPM). However, if opening doors of freezing room or home bar, the freezing room fan motor stops.

4. As for monitoring of BLDC fan motor error in the freezing room, MICOM immediately stops the fan motor by determining that the BLDC fan motor is locked or poor if there would be position signal for more than 115 seconds at the BLDC motor. Then it displays failure (refer to failure diagnosis function table) at the display part of refrigerator, the BLDC motor doesn’t operate more. If you want to operate the BLDC motor, turn off and on power resource.

MICOM FUNCTION

- 28 -

Miracle Zone NOTCH meat cheeze veg.

Setting Indication -1°C2°C4°C

- 29 -

2-10. Control of M/C room fan motor

1. The M/C room fan motor performs ON/OFF control by linking with the COMP.

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

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

2-11. Door opening alarm

1. Buzzer generates alarm sound if doors are not closed even when more than a minute consecutively has passed with doors of freezing / cold storage room or home bar opened.

2. Buzzer rings three times in the interval of 0.5 second after the first one-minute has passed after doors are opened and then repeats three times of On/Off alarm in the cycle of every 30 seconds.

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

2-12. Ringing of button selection buzzer

1. If pressing the front display button, “Ding ~ “ sound rings.

2-13. Ringing of compulsory operation, compulsory frost removal buzzer

1. If pressing the test button in the main PCB, “Phi ~ “ sound rings.

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

1.8 second three times.

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

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

2-14. Frost removal function

1. Frost removal is performed whenever total operation time of compressor becomes 7 ~ 7.5 hour.

2. In providing initial power (or returning power failure), frost removal starts whenever total operation time of compressor becomes 4 ~ 4.5 hour.

3. Frost removal is completed if temperature of a frost removal sensor becomes more than 5°C after starting frost removal. Poor frost removal is not displaced if it does not arrive at 5°C even if two hours have passed after starting frost removal.

4. No removal is done if frost removal sensor becomes poor (snapping or short-circuit).

Doors of freezing / cold storage room

or home bar

BUZZER

Closing

Opening

Within

a minute

A minute

seconds30seconds30seconds

Opening

Closing Closing

3 Times 3 Times 3 Times 3 Times

MICOM FUNCTION

2-15. Sequential operation of built-in product

Built-in products such as compressor, frost removal heater, freezing room fan, Cooling Fan and step motor damper are sequentially operated as follows for preventing noise and part damage occurred due to simultaneous operation of a lot of parts in applying initial power and completing test.

MICOM FUNCTION

- 30 -

Function Load Operation Sequence Remark

In applying Initial power TEST MODE

When temperature of a frost removal sensor becomes more than 45°C (In purchase, movement)

If error occurs during operation, initial operation is not done.

■

Sequence of load operation when closing F-room and R-room.

If pressing switch once more in the test mode 2 or temperature of a frost removal sensor is more than 5°C, it immediately returns to the test mode for initial operation (COMP operates after 7 minutes).

When temperature of a frost removal sensor becomes less than 45°C (In power failure, service)

Test mode 1 (Compulsory function)

Test mode 2 (Compulsory frost removal)

POWER

COMP

F-FAN

C-FAN

R-STEP MOTOR

DAMPER

HOME

BAR

HEATER

MIRACLE

ZONE STEP

DAMPER

MOTOR

FROST

REMOVAL

HEATER

OFF

HOME

BAR

HEATER

HOME

BAR

HEATER

OFF

FROST

REMOVAL

HEATER

DAMPER

DUCT DOOR

HEATER

DAMPER

DUCT DOOR

HEATER

OFF

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

POWER

PIPE

DISP'

HEATER

0.3

sec.

PIPE

DISP'

HEATER

OFF

0.3

sec.

COMP

0.3

sec.

F-FAN

C-FAN

0.3

sec.

R-STEP MOTOR

DAMPER

0.3

sec.

MIRACLE

ZONE STEP

DAMPER

MOTOR

0.3

sec.

HOME

BAR

HEATER

TEST

S/W

(PRESS

Once)

OTHER

LOAD

OFF

COMP

F-FAN

C-FAN

R-STEP

MOTOR

DAMPER

MIRACLE

ZONE STEP

DAMPER

MOTOR CLOSE

TEST

S/W

(PRESS

2 Times)

COMP

OFF

F-FAN

C-FAN

OFF

FROST

REMOVAL

HEATER

R-STEP MOTOR

DAMPER

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

+ 98 hidden pages