LG LRSPC2051xx Service Manual

CAUTION

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

REFRIGERATOR

SERVICE MANUAL

MODEL: LRSPC2051AB / LRSPC2051BM

LRSPC2051ST

COLOR: ATLANTIC BLUE

BLACK MIRROR

STAINLESS STEEL

http://biz.lgservice.com

Ref. No. GR-L207NGUA GR-L207NSUA

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 CONTROL THE AMOUNT OF WATER SUPPLIED TO THE ICEMAKER......................................................... 20

MICOM FUNCTION .............................................................................................................................................................. 22

EXPLANATION FOR MICOM CIRCUIT............................................................................................................................... 30

EXPLANATION FOR PWB CIRCUIT ..................................................................................................................................30

COMPENSATION CIRCUIT FOR TOO WARM, TOO COLD AT FREEZER.......................................................................44

PWB PARTS DRAWING AND LIST ....................................................................................................................................47

PWB CIRCUIT DIAGRAM...................................................................................................................................................57

ICEMAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD........................................................... 61

WORKING PRINCIPLES.....................................................................................................................................................61

FUNCTION OF ICE MAKER...............................................................................................................................................62

ICEMAKER TROUBLESHOOTING.....................................................................................................................................65

ICEMAKER CIRCUIT PART................................................................................................................................................66

CIRCUIT................................................................................................................................................................................ 67

TROUBLE DIAGNOSIS........................................................................................................................................................ 69

TROUBLE SHOOTING ...................................................................................................................................................... 69

FAULTS .............................................................................................................................................................................. 79

COOLING CYCLE HEAVY REPAIR................................................................................................................................... 96

HOW TO DEAL WITH CLAIMS........................................................................................................................................ 103

HOW TO DISASSEMBLE AND ASSEMBLE..................................................................................................................... 108

DOOR............................................................................................................................................................................... 108

HANDLE........................................................................................................................................................................... 109

SHROUD, GRILLE FAN................................................................................................................................................... 109

ICEMAKER....................................................................................................................................................................... 109

DISPENSER..................................................................................................................................................................... 110

WATER TANK AND WATER LINE.................................................................................................................................... 112

HOME BAR....................................................................................................................................................................... 112

EXPLODED VIEW............................................................................................................................................................... 113

REPLACEMENT PARTS LIST........................................................................................................................................... 122

CONTENTS

- 2 -

Please observe the following safety precautions to use the refrigerator safely and correctly and to prevent accident or injury when servicing.

1. Be careful 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 overloaded, it may cause fire. Please use a dedicated circuit for the refrigerator.

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

6. Use standard electrical components.

7. Make sure the hooks are 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 for evidence of moisture intrusion in the electrical components. Replace the parts or mask with insulation tape 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 suggest that customers repair their refrigerator

themselves. This work requires special tools and knowledge. Non-professionals could cause fire, injury, or damage to the product.

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

13. Do not put anything on top of the refrigerator, especially samething containing water, like a vase.

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

15. When you scrap or discard the refrigerator, please remove the doors and dispose of it where children are not likely to play in or around it.

WARNINGS AND PRECAUTIONS FOR SAFETY

- 3 -

SPECIFICATIONS

- 4 -

ITEMS SPECIFICATIONS

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

(35

/3X331/3X691/8 in.)

NET WEIGHT 151kg (332

/8 lbs.) 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 (185g) (6

/2 oz.) LUBRICATING OIL FREOL @15G (320 cc) DRIER 1Ø0.83

ITEMS SPECIFICATIONS

CAPILLARY TUBE MOLECULAR SIEVE XH-7 FIRST DEFROST 4 - 5 Hours DEFROST CYCLE 13 - 15 Hours DEFROSTING DEVICE Heater, Sheath

Heater, L - Cord

ANTI SWEAT HEATER Dispenser Duct Door Heater

Dispenser Heater Home Bar Heater

ANTI-FREEZING HEATER Water Tank Heater

Damper Heater FREEZER LAMP 40W (1 EA) REFRIGERATOR LAMP 40W (1 EA) DISPENSER LAMP 15W (1 EA)

1. Ref No. : GR-P247

898 (351/3)

/8)

1756 (69

948 (373/8)

/8)

685 (27)

745 (29

796 (31

/3)

847 (33

1218.5 (48)

SPECIFICATIONS

- 5 -

ITEMS SPECIFICATIONS

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

(35

/3X30X691/8 in.)

NET WEIGHT 146kg (321

/8 lbs.) 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 (185g) (6

/2 oz.) LUBRICATING OIL FREOL @15G (320 cc) DRIER 1Ø0.83

2. Ref No. : GR-P207

ITEMS SPECIFICATIONS

CAPILLARY TUBE MOLECULAR SIEVE XH-7 FIRST DEFROST 4 - 5 Hours DEFROST CYCLE 13 - 15 Hours DEFROSTING DEVICE Heater, Sheath

Heater, L - Cord

ANTI SWEAT HEATER Dispenser Duct Door Heater

Dispenser Heater Home Bar Heater

ANTI-FREEZING HEATER Water Tank Heater

Damper Heater FREEZER LAMP 40W (1 EA) REFRIGERATOR LAMP 40W (1 EA) DISPENSER LAMP 15W (1 EA)

898 (351/3)

/8)

1756 (69

948 (37

/8)

660 (26)

711 (28)

600 (23

762 (30)

1133.5 (44

SPECIFICATIONS

- 6 -

ITEMS SPECIFICATIONS

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

(35

/3X331/3X691/8 in.)

NET WEIGHT 145kg (319

/3 lbs.) 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 (185g) (6

/2 oz.)

LUBRICATING OIL FREOL @15G (320 cc)

ITEMS SPECIFICATIONS

DRIER 1Ø0.83 CAPILLARY TUBE MOLECULAR SIEVE XH-7 FIRST DEFROST 4 - 5 Hours DEFROST CYCLE 13 - 15 Hours DEFROSTING DEVICE Heater, Sheath

Heater, L-Cord

ANTI SWEAT HEATER Dispenser Duct Door Heater

Dispenser Heater

ANTI-FREEZING HEATER Water Tank Heater

Damper Heater FREEZER LAMP 40W (1 EA) REFRIGERATOR LAMP 40W (1 EA) DISPENSER LAMP 15W (1 EA)

3. Ref No. : GR-L247

898 (351/3)

/8)

1756 (69

948 (37

/8)

/3)

685 (27)

745 (29

796 (31

847 (33

1218.5 (48)

SPECIFICATIONS

- 7 -

ITEMS SPECIFICATIONS

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

(35

/3X30X691/8 in.)

NET WEIGHT 140kg (308

/3 lbs.) 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 (185g) (6

/2 oz.)

LUBRICATING OIL FREOL @15G (320 cc)

ITEMS SPECIFICATIONS

DRIER 1Ø0.83 CAPILLARY TUBE MOLECULAR SIEVE XH-7 FIRST DEFROST 4 - 5 Hours DEFROST CYCLE 13 - 15 Hours DEFROSTING DEVICE Heater, Sheath

Heater, L-Cord

ANTI SWEAT HEATER Dispenser Duct Door Heater

Dispenser Heater

ANTI-FREEZING HEATER Water Tank Heater

Damper Heater FREEZER LAMP 40W (1 EA) REFRIGERATOR LAMP 40W (1 EA) DISPENSER LAMP 15W (1 EA)

4. Ref No. : GR-L207

898 (351/3)

/8)

1756 (69

948 (37

/8)

660 (26)

711 (28)

600 (23

762 (30)

1133.5 (44

SPECIFICATIONS

- 8 -

ITEMS SPECIFICATIONS

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

(35

/3X331/3X691/8 in.)

NET WEIGHT 142kg (313

/2 lbs.) 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 (185g) (6

/2 oz.)

LUBRICATING OIL FREOL @15G (320 cc)

ITEMS SPECIFICATIONS

DRIER 1Ø0.83 CAPILLARY TUBE MOLECULAR SIEVE XH-7 FIRST DEFROST 4 - 5 Hours DEFROST CYCLE 13 - 15 Hours DEFROSTING DEVICE Heater, Sheath

Heater, L - Cord 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-C247

898 (351/3)

/8)

1756 (69

948 (37

/8)

/3)

685 (27)

745 (29

796 (31

847 (33

1218.5 (48)

SPECIFICATIONS

- 9 -

ITEMS SPECIFICATIONS

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

(35

/3X30X691/8 in.)

NET WEIGHT 137kg (302

/7 lbs.) 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 (185g) (6

/2 oz.)

LUBRICATING OIL FREOL @15G (320 cc)

2. Ref No. : GR-C207

ITEMS SPECIFICATIONS

DRIER 1Ø0.83 CAPILLARY TUBE MOLECULAR SIEVE XH-7 FIRST DEFROST 4 - 5 Hours DEFROST CYCLE 13 - 15 Hours DEFROSTING DEVICE Heater, Sheath

Heater, L - Cord 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)

898 (351/3)

/8)

1756 (69

948 (37

/8)

711 (28)

762 (30)

660 (26)

600 (23

1133.5 (44

SPECIFICATIONS

- 10 -

ITEMS SPECIFICATIONS

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

(35

/3X331/3X691/8 in.)

NET WEIGHT 140kg (308

/3 lbs.) 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 (185g) (6

/2 oz.)

LUBRICATING OIL FREOL @15G (320 cc)

ITEMS SPECIFICATIONS

DRIER 1Ø0.83 CAPILLARY TUBE MOLECULAR SIEVE XH-7 FIRST DEFROST 4 - 5 Hours DEFROST CYCLE 13 - 15 Hours DEFROSTING DEVICE Heater, Sheath

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

3. Ref No. : GR-B247

898 (351/3)

/8)

1756 (69

948 (37

/8)

/3)

685 (27)

745 (29

796 (31

847 (33

1218.5 (48)

SPECIFICATIONS

- 11 -

ITEMS SPECIFICATIONS

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

(35

/3X30X691/8 in.)

NET WEIGHT 135kg (297

/8 lbs.) 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 (185g) (6

/2 oz.)

LUBRICATING OIL FREOL @15G (320 cc)

ITEMS SPECIFICATIONS

DRIER 1Ø0.83 CAPILLARY TUBE MOLECULAR SIEVE XH-7 FIRST DEFROST 4 - 5 Hours DEFROST CYCLE 13 - 15 Hours DEFROSTING DEVICE Heater, Sheath

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

4. Ref No. : GR-B207

898 (351/3)

/8)

1756 (69

948 (37

/8)

711 (28)

762 (30)

660 (26)

600 (23

1133.5 (44

PARTS IDENTIFICATION

- 12 -

Conversion Switch

(Meats/Vegetables)

Humidity Switch

Lamp

Shelf

Egg Box Snack Drawer

Vegetable Drawer

Vegetable Drawer/Meat Drawer

Door Rack

Refreshment Center (optional)

Shelf

Door Rack Wine Holder (optional)

Lamp

Drawer

or Shelf

(optional)

Lower Cover

Door Rack

Drawer

Freezer

Compartment

Refrigerator

Compartment

Automatic

icemaker

Door Rack

Cover PWB

Cover Hinge

Home Bar

Dairy Product Corner

Shelf

(Steel/

Tempered

Glass)

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

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

PARTS IDENTIFICATION

- 13 -

Conversion Switch

(Meats/Vegetables)

Humidity Switch

Lamp

Shelf

Egg Box Snack Drawer

Vegetable Drawer

Vegetable Drawer/Meat Drawer

Door Rack

Refreshment Center (optional)

Shelf

Door Rack Wine Holder (optional)

Lamp

Drawer

or Shelf

(optional)

Lower Cover

Door Rack

Drawer

Freezer

Compartment

Refrigerator

Compartment

Automatic

icemaker

Door Rack

Cover PWB

Cover Hinge

Home Bar

Dairy Product Corner

Shelf

(Steel/

Tempered

Glass)

PARTS IDENTIFICATION

- 14 -

Humidity Switch

Lamp

Shelf

Egg Box Snack Drawer

Vegetable Drawer

Vegetable Drawer/Meat Drawer

Door Rack

Guide Bottle

Shelf

Door Rack Wine Holder (optional)

Lamp

Drawer

or Shelf

(optional)

Lower Cover

Door Rack

Drawer

Freezer

Compartment

Refrigerator

Compartment

Automatic

icemaker

Door Rack

Conversion Switch

(Meats/Vegetables)

Cover PWB

Cover Hinge

Dairy Product Corner

Shelf

(Steel/

Tempered

Glass)

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

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

PARTS IDENTIFICATION

- 15 -

Conversion Switch

(Meats/Vegetables)

Humidity Switch

Lamp

Shelf

Egg Box Snack Drawer

Vegetable Drawer

Vegetable Drawer/Meat Drawer

Door Rack

Guide Bottle

Shelf

Door Rack Wine Holder (optional)

Lamp

Drawer

or Shelf

(optional)

Lower Cover

Door Rack

Drawer

Freezer

Compartment

Refrigerator

Compartment

Automatic

icemaker

Door Rack

Cover PWB

Cover Hinge

Dairy Product Corner

Shelf

(Steel/

Tempered

Glass)

PARTS IDENTIFICATION

- 16 -

Conversion Switch

(Meats/Vegetables)

Humidity Switch

Lamp

Shelf

Egg Box Snack Drawer

Vegetable Drawer

Vegetable Drawer/Meat Drawer

Door Rack

Refreshment Center (optional)

Shelf

Door Rack Wine Holder (optional)

Lamp

Icemaker

Drawer

or Shelf

(optional)

Lower Cover

Door Rack

Drawer

Freezer

Compartment

Refrigerator

Compartment

Door Rack

Cover PWB

Cover Hinge

Home Bar

Dairy Product Corner

Shelf

(Steel/

Tempered

Glass)

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

PARTS IDENTIFICATION

- 17 -

Conversion Switch

(Meats/Vegetables)

Humidity Switch

Lamp

Shelf

Egg Box Snack Drawer

Vegetable Drawer

Vegetable Drawer/Meat Drawer

Door Rack

Shelf

Door Rack Wine Holder (optional)

Lamp

Drawer

or Shelf

(optional)

Lower Cover

Door Rack

Drawer

Freezer

Compartment

Refrigerator

Compartment

Door Rack

Icemaker

Cover PWB

Cover Hinge

Dairy Product Corner

Shelf

(Steel/

Tempered

Glass)

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

1. How to Adjust Door Height of Refrigerator

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

1. If the freezer door is lower than the refrigerator door:

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

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

■ Install Water Filter (Applicable to some models)

■ 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 hardy 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 drops on the shelf under the filter.

HOW TO INSTALL REFRIGERATOR

- 19 -

Control box

Aligning with the guide line and the fastening indication line

Control box

Aligning with the guide line and the loosening indication line

Removal of red cap

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 bin 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 injure hands.)

• Check the operation of motor by listening to its 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), 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 spilled water and throw it 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 Figure. The optimum amount of water is 110cc[6.7in

])

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

HOW TO INSTALL REFRIGERATOR

- 20 -

Test Switch

Confirm the amount

of water

Icemaker

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 the DIP switches.

■ 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 the ice cubes are too small, increase the water supplying time. This happens when too little water is supplied to the tray.

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

Caution : When adjusting the amount of water supplied,

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

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

- 21 -

SWITCH NO Water Supply

SWITCH1 SWITCH2 SWITCH3 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-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

* 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

- 22 -

MAXMIN

LOCK

OFF

ROOM

TEMP

°F

TEMP

°F

FRZ TEMP FRZ TEMP

REF TEMP

DISPENSER

LOCK

SUPER FRZ

LOCK

SUPER FRZ

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.

LOCK

OFF

MAXMIN

CRUSHED CUBED

WATER

TEMP

ROOM

TEMP

°F

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 [-2°F] -22 °C [-7°F] -23 °C [-9°F] -15 °C [5°F] -17 °C [1°F]

Refrigeration

3 °C [37°F] 2 °C [35°F] 0°C [32°F] 6 °C [43°F] 4 °C [39°F]

Control

FRZ TEMP

°F °F °F °F °F

REF TEMP

MAXMIN

FRZ TEMP

REF TEMP

FRZ TEMP

MAXMIN

REF TEMP

MAXMIN

FRZ TEMP

MAXMIN

REF TEMP

MAXMIN

°F °F °F °F °F

MAXMIN

FRZ TEMP

MAXMIN

REF TEMP

MAXMIN

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[16°F] ~ 49°C[120°F] and displayed as Lo for less than -10°C[14°F] and as HI for more than 50°C[122°F]. 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 icemaker

• The automatic icemaker can make 8 pieces of ice at a time, up to 10 times a day, for a total of 80 pieces per day. This

quantity may vary, affected by ice usage, ambient temperature, frequency of door opening, etc.

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

• If you don’t want to use automatic icemaker, set the icemaker power switch OFF.

If you want to use automatic icemaker again, set the icemaker power switch ON.

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

MICOM FUNCTION

- 23 -

DISPENSER

CRUSHED CUBED

WATER

Pressing

Switch

DISPENSER

2-4. When icemaker does not operate smoothly

Ice is lumped together

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

into the ice storage bin again.

• When the icemaker produces too small or lumpy ice, the amount of water supplied to the icemaker needs 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 dry the bin and replace it.

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 begin making ice.

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.

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.

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,

compressor operates after the remaining time has passed.

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

MICOM FUNCTION

- 24 -

Ex) In selecting

Off

SUPER FRZ

OFF

Ex) In selecting

LOCK

Ex) In selecting

LOCK again

LOCK

SUPER FRZ

2-8. Control of variable type of freezer compartment fan

1. To increase cooling speed and load response speed, the 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 65 seconds at the BLDC motor. Then it displays failure (refer to failure diagnosis function table) at the display part of refrigerator, performs re-operation in the cycle of 30 minutes. If normal operation is performed, poor status is released and refrigerator returns to the initial status (reset).

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 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 half 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 the doors of the freezer or home bar are closed during door open alarm, alarm is immediately released.

2-11. Ringing of button selection buzzer

1. If you press the front display button, the Ding sound.

2-12. Ringing of compulsory operation, compulsory frost removal buzzer

1. If you press the test button on the Main PCB, the Phi sounds.

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.

MICOM FUNCTION

- 25 -

Any Door

BUZZER

Closing

Opening

Within

a minute

A minute

seconds30seconds30seconds

Opening

Closing Closing

3 Times 3 Times 3 Times 3 T imes

2-13. Frost removal function

1. Frost removal is performed whenever total operation time of compressor becomes 7 ~ 71/2 hour.

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

/2 hour.

3. Frost removal is completed if temperature of a frost removal sensor becomes more than 5°C[41°F] after starting frost removal. Poor frost removal is not displaced if it does not arrive at 5°C[41°F] 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, freezer fan, cooling fan and step motor damper are operated sequentially as shown below to prevent noise and damage from power surges that occur when all parts are powered up at once.

MICOM FUNCTION

- 26 -

Function Load Operation Sequence Remark

In applying Initial power TEST MODE

When temperature of a frost removal sensor becomes more than 45°C [77°F]

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[41°F], it immediately returns to the test mode for initial operation (Compressor operates after 7 minutes).

When temperature of a frost removal sensor becomes less than 45°C [77°F]

Test mode 1 (Compulsory function)

Test mode 2 (Compulsory frost removal)

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

1/2

sec.

1/4

sec.

1/4

sec.

1/4

sec.

1/2

sec.

1/4

sec.

FROST

REMOVAL

HEATER

OFF

WATER

SUPPLY

DISPENSE

HEATER

sec.

1/4

sec.

1/4

sec.

1/4

sec.

1/4

sec.

1/4

sec.

1/4

sec.

1/4

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

2-15. Failure Diagnosis Function

1. Failure diagnosis function is to facilitate service when a failure occurs 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.

✽ 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).

MICOM FUNCTION

- 27 -

OFF

MAXMIN

CRUSHED CUBED

WATER

OFF

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

ROOM

TEMP

ROOM

TEMP

°F

TEMP

°F

●● : Normal Operation

Er FS

Er RS

Setting temperature

display (Note 2)

Er DS

Er dH

Er FF

Er CF

Er CO

Setting temperature

display (Note 1)

Setting temperature

display (Note 2)

Setting temperature

display (Note 2)

Failure code display part

Setting

temperature

for freezing

Setting

temperature for

cold storage

No. Item

Contents of failure

Freezer

Fan

Compressor

Stepping

motor damper

Defrost

Heater

M/C room

Fan

Product operation status in failure

Failure of freezer sensor

Failure of refrigerator sensor 1

Failure of refrigerator sensor 2

Failure of frost removal sensor

Poor of frost removal

Failure of BLDC FAN at freezing room

Failure of BLDC FAN at machine room

Failure of Communication

Failure of Outside Sensor

Failure of ice removal sensor

Failure of icemaker unit

Snapping or short-circuit of freezer sensor

Snapping or short-circuit of refrigerator sensor 1

Snapping or short-circuit of refrigerator sensor 2

Snapping or short-circuit of frost removal sensor

Snapping of frost removal heater or temperature fuse, pull-out of connector (indicated minimum 4 hours after failure occurs)

Poor motor, hooking of wires to fan. Contact of structures to Fan. Snapping or short-circuit of L/wire (if there is no fan motor signal for more than 60 seconds in operation of fan motor

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

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.

Standard

RPM

Standard

RPM

Standard

RPM

Standard

RPM

Standard

RPM

OFF (check every

30 minutes)

Standard

RPM

Standard

RPM

●●

OFF (check

every 30 minutes)

●●

ON for 15minutes OFF for 15minutes

●●

No frost removal

●●

Open for 10munutes, closing for 15 minutes

●●

Note1) In error of outside sensor, setting temperature for freezing/ cold storage is normally displayed and indicated Er on

the outside temperature display part (normally displayed except for the outside temperature display part).

Note2) Nonconforming contents of poor R2 sensor, Icemaker-sensor and icemaker kit are displayed in LCD check, not

indicated on the failure display part (when pressing freezing temperature adjustment button and special freezing button for a second or more).

Cold storage sensor 2 Normal : (C) Part LCD graphic- ON (middle partition) Abnormal: Only (C) Part LCD graphic-OFF

Icemaker sensor

Normal: (D) Part LCD graphic-ON Abnormal: Only (D) Part LCD graphic-ON

Icemaker Unit

Normal: (E) Part LCD graphic-ON Abnormal : Only (E) Part LCD graphic-ON

2-16. Test Function

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

2. Test button is placed on the main PCB of refrigerator (test switch), and the test mode will be finished after maximum 2 hours regardless of test mode and then is reset to the normal status.

3. Function adjustment button is not perceived during performance of test mode but only warning sounds ring.

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

5. If nonconforming contents such as sensor failure are found during performance of test mode, release the test mode and display the failure code.

6. If you press the test button during a failure code display, test mode will not be activated.

MICOM FUNCTION

- 28 -

Other LCD graphics - ON

Test 1

Test 2

Normal

Conditions

Mode Manipulation Content Remarks

Press TEST switch once

Press TEST switch once at TEST1 condition.

Press TEST switch once at TEST2 condition.

1. Continuous operation of compressor

2. Continuous operation of freezing room fan (high speed RPM) and M/C room fan

3. Frost removal heater OFF

4. Full opening status (baffle opened) status of electronic step motor damper

5. All display LCD graphics - ON.

1. Compressor OFF

2. Freezing room fan and M/C room fan is turned off.

3. Frost removal heater ON

4. Full closing status (baffle closed) status of electronic step motor damper

5. All display LCD graphics - OFF ( (A) Medium status. (B) Medium status. Only LCD is turned on)

Return to the initial status.

Freezing room fan is turned off in door open.

Compressor is operated after 7 minutes.

✻ LCD check function: If simultaneously pressing special freezing button and cold temperature adjustment button for a

second, a back light is turned on and all display LCD graphics on. If releasing the button, the LCD graphic displays the previous status, the back light is turned off (LCD graphic and back light ON/OFF check).

2-17. Function of dispenser and water dispenser built-in

1. This is function allowing ice and water to come outside without opening door.

2. If pressing the dispenser switch (bushing button) after selecting ice (cube ice, crushed ice) or water, ice and water equivalent to each come out. However, the duct doors are opened by electrical solenoid valve (Duct Door Solenoid) if pressing the press switch in case of selecting ICE. If pressing the dispenser press switch and then detaching the hands, the duct door is closed after it is opened for 5 seconds.

3. Function allowing ice and water to come stops if freezing room doors are opened.

4. If there is no Off signal even when 3 minutes have passed while pressing the dispenser press switch after selecting ice (cube ice, crushed ice) or water, geared motor and solenoid (Cube, Water) is automatically turned off. However, the solenoid (duct door) is stop 5 seconds after Off (to prevent short-circuit of a coil due to overheat of solenoid).

5. Dispenser Lamp On/Off function Lamp on the dispenser part is turned on if pressing the dispenser press switch after selecting ice (cube ice, crushed ice) or water. If detaching the hands, it is turned off.

6. Selection function of water/crushed/ cube ice

1) This is function to allow selection of water/crushed/ cube ice function depending on user’s selection. Display and

selection is done if pressing the dispenser selection button.

2) In the initial Power On, cube ice is automatically selected.

3) In selecting cube ice, geared motor is operated so that crushed ice can be supplied outside if pressing the press switch

when ice is formed in the ice storage container (Ice Bin).

4) In selecting cube ice, geared motor is operated so that cube ice can be supplied outside if pressing the press switch

when ice is formed in the ice storage container (Ice Bin).

7. Water dispenser function

1) LCD is displayed for selection if user selects water at the function adjustment part.

2) Water dispenser function is a type directly connected to a water pipe. The water solenoid valve built-in at the right side

of the M/C room is opened so that water can be supplied if selecting Water from the function adjustment part and then pressing the press switch.

MICOM FUNCTION

- 29 -

LOCKFRZ TEMP

REF TEMP

SUPER FRZ

MAXMIN

LOCK

OFF

LOCK

FRZ TEMP

REF TEMP

DISPENSER

LOCK

SUPER FRZ

MAXMIN

FRZ TEMP

REF TEMP

DISPENSER

LOCK

SUPER FRZ

LOCK

OFF

MAXMIN

CRUSHED CUBED

WATER

TEMP

°C

TEMP

ROOM

TEMP

ROOM TEMP

°C

°F

°C

°F

°C °F

1. Explanation for PWB circuit

1-1. Power circuit

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

Power circuit consists of SMPS (SWITCHING MODE POWER SUPPLY) power. The SMPS consist of the rectifying part (BD1, CE1) converting AC voltage to DC voltage, the switching part (IC2) switching the converted DC voltage, transformer transferring energy of the primary side of the switching terminal to the secondary side and the feedback part (IC3, IC4) transferring it to the primary side.

Caution : Since high voltage (DC310V) is maintained at the power terminal, please take a measure after more than 3

minutes have passed after removing power cords in the abnormal operation of a circuit.

Voltage of every part is as follows:

EXPLANATION FOR MICOM CIRCUIT

- 30 -

Part VA1 CE1 CE2 CE3 CE4 CE5

Voltage 230 Vac 310 Vdc 16 Vdc 12 Vdc 15.5 Vdc 5 Vdc

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