LG LRSC21951xx Service Manual

CAUTION

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

REFRIGERATOR

SERVICE MANUAL

http://biz.lgservice.com

MODEL: GR-L207MSU

COLOR: Stainless-Steel

Ref. No. GR-L207MSU

CONTENTS

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..................................................................................................................................... 33

EXPLANATION FOR PWB CIRCUIT ..................................................................................................................................33

COMPENSATION CIRCUIT FOR WEAK-COLD, OVER-COLD AT FREEZING ROOM.....................................................48

PWB PARTS DRAWING AND LIST ....................................................................................................................................51

PWB CIRCUIT DIAGRAM ...................................................................................................................................................61

ICE MAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD.......................................................... 65

WORKING PRINCIPLES.....................................................................................................................................................65

FUNCTION OF ICE MAKER ...............................................................................................................................................66

ICE MAKER TROUBLESHOOTING....................................................................................................................................69

ICE MAKER CIRCUIT PART ...............................................................................................................................................70

CIRCUIT................................................................................................................................................................................ 71

TROUBLE DIAGNOSIS........................................................................................................................................................ 73

TROUBLE SHOOTING ...................................................................................................................................................... 73

FAULTS .............................................................................................................................................................................. 83

COOLING CYCLE HEAVY REPAIR ................................................................................................................................. 100

HOW TO DEAL WITH CLAIMS........................................................................................................................................ 107

HOW TO DISASSEMBLE AND ASSEMBLE..................................................................................................................... 112

DOOR ............................................................................................................................................................................... 112

HANDLE ........................................................................................................................................................................... 113

SHROUD, GRILLE FAN ................................................................................................................................................... 113

ICEMAKER ....................................................................................................................................................................... 113

DISPENSER ..................................................................................................................................................................... 114

WATER TANK AND WATER LINE.................................................................................................................................... 116

HOME BAR....................................................................................................................................................................... 116

EXPLODED VIEW............................................................................................................................................................... 117

REPLACEMENT PARTS LIST........................................................................................................................................... 126

- 2 -

WARNINGS AND PRECAUTIONS FOR SAFETY

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.

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.

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.

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.

- 3 -

SPECIFICATIONS

1. Ref No. : GR-P247

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 898(W)X847(D)X1756(H)

NET WEIGHT (kg) 151

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 Water Injection Heater

Damper Heater

FREEZER LAMP 40W (1 EA)

REFRIGERATOR LAMP 40W (1 EA)

DISPENSER LAMP 15W (1 EA)

1756

898

948

685

745

796

847

1218.5

- 4 -

SPECIFICATIONS

2. Ref No. : GR-P207

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 898(W)X762(D)X1756(H)

NET WEIGHT (kg) 146

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 Water Injection Heater

Damper Heater

FREEZER LAMP 40W (1 EA)

REFRIGERATOR LAMP 40W (1 EA)

DISPENSER LAMP 15W (1 EA)

1756

898

948

600

660

711

762

1133.5

- 5 -

SPECIFICATIONS

3. Ref No. : GR-L247

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 898(W)X847(D)X1756(H)

NET WEIGHT (kg) 145

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

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 Water Injection Heater

Damper Heater

FREEZER LAMP 40W (1 EA)

REFRIGERATOR LAMP 40W (1 EA)

DISPENSER LAMP 15W (1 EA)

1756

898

948

685

745

796

847

1218.5

- 6 -

SPECIFICATIONS

4. Ref No. : GR-L207

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 898(W)X762(D)X1756(H)

NET WEIGHT (kg) 140

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

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 Water Injection Heater

Damper Heater

FREEZER LAMP 40W (1 EA)

REFRIGERATOR LAMP 40W (1 EA)

DISPENSER LAMP 15W (1 EA)

1756

898

948

600

660

711

762

1133.5

- 7 -

SPECIFICATIONS

1. Ref No. : GR-C247

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 898(W)X847(D)X1756(H)

NET WEIGHT (kg) 142

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 Home Bar Heater

ANTI-FREEZING HEATER Damper Heater

FREEZER LAMP 40W (1 EA)

REFRIGERATOR LAMP 40W (1 EA)

DISPENSER LAMP 15W (1 EA)

1756

898

948

685

745

796

847

1218.5

- 8 -

SPECIFICATIONS

2. Ref No. : GR-C207

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 898(W)X762(D)X1756(H)

NET WEIGHT (kg) 137

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 Home Bar Heater

ANTI-FREEZING HEATER Damper Heater

FREEZER LAMP 40W (1 EA)

REFRIGERATOR LAMP 40W (1 EA)

DISPENSER LAMP 15W (1 EA)

1756

898

948

600

660

711

762

1133.5

- 9 -

SPECIFICATIONS

3. Ref No. : GR-B247

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 898(W)X847(D)X1756(H)

NET WEIGHT (kg) 140

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

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)

1756

898

948

685

745

796

847

1218.5

- 10 -

SPECIFICATIONS

4. Ref No. : GR-B207

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 898(W)X762(D)X1756(H)

NET WEIGHT (kg) 135

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

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)

1756

898

948

600

660

711

762

1133.5

- 11 -

PARTS IDENTIFICATION

Door rack

Refreshment center (optional)

Door rack

Lower Cover

Milk product corner

Cover PWB

Cover Hinge

Home Bar

Door rack

Freezer

Compartment

Refrigerator

Compartment

Door rack

Conversion Switch

(Meats/Vegetables)

Humidity Switch

Vegetable drawer/Meat drawer

Cover, Lamp-R/U

Shelf

Egg Box

Snack Corner

Vegetable Box

Folding Shelf

Wine Rack

Lamp

Automatic

ice maker

Shelf

(Steel,

T/Glass)

Drawer

1. Ref No. : GR-P247, GR-P207

- 12 -

PARTS IDENTIFICATION

Cover PWB

Cover Hinge

Home Bar

Door rack

Refreshment center (optional)

Door rack

Lower Cover

Milk product corner

Door rack

Refrigerator

Compartment

Door rack

Freezer

Compartment

Conversion Switch

(Meats/Vegetables)

Humidity Switch

Vegetable drawer/Meat drawer

Cover, Lamp-R/U

Shelf

Egg Box

Snack Corner

Vegetable Box

Folding Shelf

Wine Rack

Lamp

Automatic

ice maker

Shelf

(Steel,

T/Glass)

Drawer

2. Ref No. : GR-P247, GR-P207

- 13 -

PARTS IDENTIFICATION

Cover PWB

Cover Hinge

Lower Cover

Door rack

Conversion Switch

(Meats/Vegetables)

Humidity Switch

Lamp

Shelf

(Steel,

T/Glass)

Drawer

Freezer

Compartment

Refrigerator

Compartment

Automatic

ice maker

Door rack

Guide bottle

Door rack

Milk product corner

Shelf

Egg Box

Snack Corner

Vegetable Box

Vegetable drawer/Meat drawer

Cover, Lamp-R/U

Folding Shelf

Wine Rack

3. Ref No. : GR-L247, GR-L207

- 14 -

PARTS IDENTIFICATION

Conversion Switch

(Meats/Vegetables)

Cover PWB

Cover Hinge

Humidity Switch

Lamp

Shelf

(Steel,

T/Glass)

Lower Cover

Door rack

Drawer

Freezer

Compartment

Refrigerator

Compartment

Automatic

ice maker

Door rack

Shelf

Egg Box

Vegetable Box

Vegetable drawer/Meat drawer

Door rack

Guide bottle

Wine Rack

Milk product corner

Snack Corner

Door rack

Cover, Lamp-R/U

Folding Shelf

4. Ref No. : GR-L247, GR-L207

- 15 -

PARTS IDENTIFICATION

Cover PWB

Cover Hinge

Home Bar

Conversion Switch

(Meats/Vegetables)

Humidity Switch

Lamp

Ice Bank

Assembly

Shelf

(Steel,

T/Glass)

Lower Cover

Door rack

Drawer

Freezer

Compartment

Refrigerator

Compartment

Door rack

Cover, Lamp-R/U

Shelf

Egg Box

Vegetable Box

Vegetable drawer/Meat drawer

Door rack

Refreshment center (optional)

Wine Rack

Milk product corner

Snack Corner

Door rack

Folding Shelf

1. Ref No. : GR-C247, GR-C207

- 16 -

PARTS IDENTIFICATION

Conversion Switch

(Meats/Vegetables)

Humidity Switch

Shelf

Egg Box

Vegetable Box

Vegetable drawer/Meat drawer

Door rack

Lamp

Shelf

(Steel,

T/Glass)

Lower Cover

Milk product corner

Door rack

Drawer

Freezer

Compartment

Refrigerator

Compartment

Door rack

Ice Bank

Assembly

Wine Rack

Snack Corner

Folding Shelf

Cover, Lamp-R/U

Cover PWB

Cover Hinge

3. Ref No. : GR-B247, GR-B207

- 17 -

Adjusting Screw

Driver

Height

Difference

Height Difference

HOW TO INSTALL REFRIGERATOR

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.

- 18 -

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

Valve Feed Rubber, Packing Connector, Pipe

Tape, TeflonConnector, Pipe

2. How to Install Water Pipe

■ Before Installation

1. The icemaker requires the water pressure of 1.5 -

8.5kgf/cm 180cc with water for 3 seconds)

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

Class. Shape and Spec. Nomenclature P/No Remarks

Conve-

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

for normal operation of water and ice

Valve Feed 5221JA3001A Common Use

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

■ Please confirm the following installation parts.

rtible Water Valve

Water Connector

Connector, (MECH) Pipe 4932JA3003B

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

No Holes

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

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

- 19 -

HOW TO INSTALL REFRIGERATOR

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

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.

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. 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.

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

- 20 -

HOW TO INSTALL REFRIGERATOR

Water Tube

Nut

Inlet

Outlet

Fixing Plate Fixing Plate

Fixing Cable

Water

Filter

Filter Inlet

Feed Valve

Hot Water

Cold Water

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.

- 21 -

HOW TO INSTALL REFRIGERATOR

Control box

Aligning with the guide line and the fastening indication line

Aligning with the guide line and the loosening indication line

Control box

Separation of red cap

Adhesion sticker

Substitute cap

■ 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.

■ After installing water filter

Reassemble the lamp cover and the top shelf of the refrigerator. To place the top shelf of the refrigerator, raise

■ 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.

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.

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.

- 22 -

HOW TO INSTALL REFRIGERATOR

Test Switch

Confirm the amount

of water

Ice maker

Too much

Too little

Optimum level

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.

- 23 -

HOW TO INSTALL REFRIGERATOR

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.

(+) Driver

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

■ Water Supplying Time Control Option

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.

Caution : When adjusting the amount of water supplied,

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

Switch ON

Switch OFF

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

Confirm the amount

of water

Optimum level

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.

- 24 -

MICOM FUNCTION

TEMP

FRZ TEMP FRZ TEMP

REF TEMP

DISPENSER

LOCK

SUPER FRZ

LOCK

SUPER FRZ

LOCK

OFF

ROOM

TEMP

MAXMIN

LOCK

OFF

ROOM

TEMP

Dispenser selection button.

Temperature adjustment button for refrigerator compartment.

Temperature adjustment button for freezer compartment.

Super freezer.

Lock button.

Temperature adjustment button for refrigerator compartment.

Temperature adjustment button for freezer compartment.

Super freezer.

Lock button.

CRUSHED CUBED

WATER

1. Monitor Panel

1-1. GR-P247, GR-P207, GR-L247, GR-L207 1-2. GR-C247, GR-C207, GR-B247, GR-B207

2. Description of Function

2-1-1. Funnction of Temperature Selection

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

FRZ TEMP

MAXMIN

FRZ TEMP

MAXMIN

Setting temperature

REF TEMP

MAXMIN

Temperature Control

Freezer Control

Refrigeration Control

Medium Medium Max Max Min Medium Min

-19 °C -22 °C -23 °C -15 °C -17 °C

3 °C2 °C0°C6 °C4 °C

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

REF TEMP

MAXMIN

❉ 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.

FRZ TEMP

REF TEMP

FRZ TEMP

MAXMIN

REF TEMP

MAXMIN

FRZ TEMP

MAXMIN

REF TEMP

MAXMIN

- 25 -

MICOM FUNCTION

DISPENSER

CRUSHED CUBED

WATER

Pressing

Switch

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 only buzzer sound rings 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.

2-2. 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.

DISPENSER

- 26 -

MICOM FUNCTION

Ex) In selecting

"On"

Ex) In selecting

"Off"

SUPER FRZ

OFF

Ex) In selecting

"LOCK"

Ex) In selecting

"LOCK" again

LOCK

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. Super 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.

SUPER FRZ

2-6. Lock

This button stops operation of different button.

• Locking or Release is repeated whenever pressing the .

LOCK

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

2-7. Special freezing

1. Special freezing is function to improve cooling speed of the freezing room by consecutively operating compressors and freezing room fan. If pressing the special 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. Special freezing is cycled in order of Selection/ Release (“Turn On” / “Turn Off”) whenever pressing the selection button.

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

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

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

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

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

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

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

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

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

compressor operates after the remaining time has passed.

- 27 -

MICOM FUNCTION

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

2-8. 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 special 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.

2-9. 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).

2-10. 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.

2-11. Ringing of button selection buzzer

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

2-12. 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.

- 28 -

MICOM FUNCTION

POWER

COMP

STEP

MOTOR

DAMPER

STEP

MOTOR

DAMPER

OPEN

STEP

MOTOR

DAMPER

HOME

BAR

HEATER

POWER

FROST

REMOVAL

HEATER

HOME

BAR

HEATER

OFF

HOME

BAR

HEATER

TEST

S/W

(Press

Once)

COMP

TEST

S/W

(Press

2 times)

COMP

OFF

0.5

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.5

sec.

0.3

sec.

FROST

REMOVAL

HEATER

OFF

WATER

SUPPLY

DISPENSE

HEATER

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

5.6

sec.

OTHER

LOAD

OFF

F-FAN

C-FAN

F-FAN

C-FAN

F-FAN

C-FAN

F-FAN

C-FAN

OFF

FROST

REMOVAL

HEATER

2-13. 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).

2-14. 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.

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)

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)

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

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).

- 29 -

MICOM FUNCTION

TEMP

OFF

ROOM

TEMP

MAXMIN

CRUSHED CUBED

WATER

TEMP

OFF

ROOM

TEMP

MAXMIN

Failure Code display Part

High quality type (GR-P207, L207, P247, L247)

Failure Code display Part

Basic type GR-C247, B247, C207, B207)

A B

2-15. Failure Diagnosis Function

1. Failure diagnosis function is function to facilitate service when nonconforming matters affecting performance of product during use of product.

2. In occurrence of failure, pressing the function adjustment button does not perform function and only alarm sound (“Ding~”) rings.

3. If nonconforming matters occurred are released during display of failure code, MICOM returns to the original state (Reset).

4. Failure code is displayed on the display part of setting temperature for the freezing room and the display part of setting temperature for the cold storage room of LCD, which are placed at the display part of a refrigerator. All the LCD graphics other than a failure code are turned off.

●● : Normal Operation

Product operation status in failure

Freezer

Standard

Fan

M/C room

Fan

●●

RPM

Standard

●●

RPM

Standard

●●

RPM

Standard

●●

RPM

Standard

●●

RPM

Defrost

Heater

●●

No frost removal

●●

Stepping

motor damper

●●

Open for 10munutes, closing for 15 minutes

●●

No. Item

Failure of freezer sensor

Failure of refrigerator sensor 1

Failure of refrigerator sensor 2

Failure of frost removal sensor

Poor of frost removal

Failure code display part

Setting

temperature

for freezing

Er FS

Setting

temperature for

cold storage

Snapping or short-circuit of freezer sensor

Er RS

Snapping or short-circuit of refrigerator sensor 1

Setting temperature

display (Note 2)

Er DS

Snapping or short-circuit of refrigerator sensor 2

Snapping or short-circuit of frost removal sensor

Er dH

Snapping of frost removal heater or temperature fuse, pull-out of

Contents of failure

Compressor

ON for 15minutes

OFF for 15minutes

connector (indicated minimum 4 hours after failure occurs)

Failure of BLDC FAN at freezing room

Er FF

Poor motor, hooking of wires to fan. Contact of structures to Fan.

●●

OFF

●●

Snapping or short-circuit of L/wire

Failure of BLDC FAN at machine room

Er CF

(if there is no fan motor signal for more than 115 seconds in

Standard

●●

OFF

RPM

●●

operation of fan motor

Failure of Communication

Er CO

Connection between main PCB and display PCB. Snapping or

Standard

●●

RPM

●●

short-circuit of L/wire. Transmission between main PCB and display PCB. Poor TR and receiving part.

●●

Failure of Outside Sensor

Failure of ice removal sensor

Failure of ice maker unit

✽ In display of the failure mode, all LCDs of setting temperature for freezing/ setting temperature for cold storage are turned

off (excluding Note1 and Note2).

Setting temperature

display (Note 1)

Setting temperature

display (Note 2)

Setting temperature

display (Note 2)

Snapping or short-circuit of outside

●●

temperature perceiving sensor

Snapping or short-circuit of icemaking sensor

Poor motor or Hall IC within ice-maker

●●

unit. Snapping or short-circuit of L/Wire. Poor main PCB drive circuit.

- 30 -

●●

+ 96 hidden pages