LG LSC27950SW Bedienungsanleitung

CAUTION

PLEASE READ CAREFULLY THE SAFETY PRECAUTIONS OF THIS MANUAL

BEFORE CHECKING OR OPERATING THE REFRIGERATOR.

REFRIGERATOR

SERVICE MANUAL

MODEL : LSC27950SW/ LSC27950SB

LSC27950ST/ LSC27960ST

COLOR : SUPER WHITE

WESTERN BLACK

STAINLESS

http://aic.lgservice.com

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

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

PARTS IDENTIFICATION ........................................................................................................................................................6

HOW TO INSTALL THE REFRIGERATOR ............................................................................................................................ 8

HOW TO ADJUST DOOR HEIGHT...................................................................................................................................... 8

FILTER ................................................................................................................................................................................. 9

HOW TO CONTROL THE ICEMAKER WATER SUPPLY.................................................................................................. 10

MICOM FUNCTION............................................................................................................................................................... 11

EXPLANATION OF MICOM CIRCUIT .................................................................................................................................. 26

EXPLANATION OF PWB CIRCUIT .....................................................................................................................................26

PWB PARTS DIAGRAM AND LIST.....................................................................................................................................45

PWB CIRCUIT DIAGRAM ...................................................................................................................................................50

ICEMAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR ............................................................................52

WORKING PRINCIPLES.................................................................................................................................................... 52

FUNCTION OF ICEMAKER ............................................................................................................................................... 53

CIRCUIT................................................................................................................................................................................ 55

TROUBLE DIAGNOSIS........................................................................................................................................................ 57

TROUBLESHOOTING ....................................................................................................................................................... 57

FAULTS .............................................................................................................................................................................. 67

COOLING CYCLE HEAVY REPAIR ................................................................................................................................... 84

HOW TO DEAL WITH CLAIMS.......................................................................................................................................... 91

HOW TO DISASSEMBLE AND ASSEMBLE....................................................................................................................... 96

DOOR................................................................................................................................................................................. 96

HANDLE ............................................................................................................................................................................. 97

FAN SHROUD GRILLE ...................................................................................................................................................... 97

WATER VALVE DISASSEMBLY METHOD .........................................................................................................................98

FAN and FAN MOTOR DISASSEMBLY METHOD..............................................................................................................98

DISPENSER....................................................................................................................................................................... 99

EXPLODED VIEW .............................................................................................................................................................. 101

REPLACEMENT PARTS LIST............................................................................................................................................ 113

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 the 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 the power cord, please wait for more

than five minutes after the power cord was disconnected

from the wall outlet.

3. Check if the power cord is pinched between the

refrigerator and the wall. If the plug or cord is damaged,

it could cause a fire or an electric shock

4. If the wall outlet is overloaded, it may cause a fire. Use a

dedicated circuit for the refrigerator.

5. Make sure the outlet is properly grounded.

Particularly in a wet or damp area.

6. Use standard electrical components.

7.Remove dust and foreign materials from the housing and

connecting parts.

8. Do not fray, damage, run over, kink, bend, pull out, or

twist the power cord.

9. 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 insert fingers or tools into the icemaker. The

geared motor drive could cause an injury or damage to

tools or the icemaker .

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, or gas.

13. Do not put anything on top of the refrigerator,

especially something 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, remove the

doors and dispose of it where children are not likely to

play in or around it.

16. This is a consumer grade product. It is not intended for

precise storage of medication.

WARNINGS AND PRECAUTIONS FOR SAFETY

- 3 -

SPECIFICATIONS

- 4 -

724 mm (281/2in.)

1004 mm (391/2in.)

908 mm (3911/16 in.)

779 mm (305/8in.)

829 mm (325/8in.)

897 mm (355/16 in.)

1261 mm (495/8in.)

1741.5 mm (681/2in.)

1746.5 mm (683/4in.)

1771 mm (6911/16 in.)

1. Ref No. : GR-L277SV(S)VA (LSC27950SW, LSC27950SB, LSC27950ST)

ITEMS SPECIFICATIONS

DIMENSIONS 908

896

1771 mm

H (3511/16

355/16

6911/16 in.)

NET WEIGHT 149 kg (328.5 lbs.)

COOLING SYSTEM Fan Cooling

TEMPERATURE CONTROL Micom Control

DEFROSTING SYSTEM Full Automatic

Heater Defrost

INSULATION Cyclo-Pentane

COMPRESSOR PTC Starting Type

EVAPORATOR Fin Tube Type

CONDENSER Wire Condenser

REFRIGERANT R134a (185g) (61/2oz.)

LUBRICATING OIL FREOL @10G (320 cc)

ITEMS SPECIFICATIONS

DRIER MOLECULAR SIEVE XH-7

CAPILLARY TUBE ID Ø0.83

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 (4 EA)

DISPENSER LAMP 15W (1 EA)

Front View Top View

SPECIFICATIONS

- 5 -

ITEMS SPECIFICATIONS

DIMENSIONS 908

896

1771 mm

H (3511/16

355/16

6911/16 in.)

NET WEIGHT 149 kg (328.5 lbs.)

COOLING SYSTEM Fan Cooling

TEMPERATURE CONTROL Micom Control

DEFROSTING SYSTEM Full Automatic

Heater Defrost

INSULATION Cyclo-Pentane

COMPRESSOR PTC Starting Type

EVAPORATOR Fin Tube Type

CONDENSER Wire Condenser

REFRIGERANT R134a (185g) (61/2oz.)

LUBRICATING OIL FREOL @10G (320 cc)

ITEMS SPECIFICATIONS

DRIER MOLECULAR SIEVE XH-7

CAPILLARY TUBE ID Ø0.83

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 (4 EA)

DISPENSER LAMP 15W (1 EA)

724 mm (281/2in.)

1004 mm (391/2in.)

908 mm (3911/16 in.)

779 mm (305/8in.)

829 mm (325/8in.)

897 mm (355/16 in.)

1261 mm (495/8in.)

1741.5 mm (681/2in.)

1746.5 mm (683/4in.)

1771 mm (6911/16 in.)

2. Ref No. : GR-L277SSWA (LSC27960ST)

Front View Top View

1. Ref No. : GR-L277SV(S)VA (LSC27950SW, LSC27950SB, LSC27950ST)

PARTS IDENTIFICATION

- 6 -

Frame Display

Dispenser Lamp

Ice & Water

Dispenser Button

PWB Cover

Water Tubes

Freezer

Compartment

Refrigerator

Compartment

Dairy Product Corner

Water Filter

Lamp

Drawer

Lamp

Automatic

Icemaker

Shelf

Door Rack

Drawer

Door Rack

Lower Cover OptiFresh Display Humidity Switch

Shelf

Snack Drawer

Can Server

Lamp

Bottle Guide

Vegetable Drawer

Door Rack

OptiFresh

PARTS IDENTIFICATION

- 7 -

Frame Display

Dispenser Lamp

Ice & Water

Dispenser Button

PWB Cover

Water Tubes

Freezer

Compartment

Refrigerator

Compartment

Dairy Product Corner

Water Filter

Lamp

Drawer

Lamp

Automatic

Icemaker

Shelf

Door Rack

Drawer

Door Rack

Lower Cover OptiFresh Display Humidity Switch

Shelf

Snack Drawer

Can Server

Lamp

Bottle Guide

Vegetable Drawer

Door Rack

OptiFresh

2. Ref No. : GR-L277SSWA (LSC27960ST)

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 freezer door is higher than the refrigerator

door:

Insert a driver into the groove of the adjusting

screw and turn in the direction of the arrow (clockwise)

until the refrigerator is level.

Insert a driver into the groove if the adjusting screw

and turn in the direction of the arrow (clockwise) until the

refrigerator is level.

3) When the refrigerator door is lower than the freezer door

Adjust the level when the refrigerator door is lower than the

freezer door during

the use of the refrigerator.

(1) Using the wide side of the tool for adjustment , turn the

keeper nut ( ) clockwise to loosen the keeper nut.

(2) Using the narrow side of the tool for adjustment, turn the

adjustment hinge pin ( ) clockwise or ( )

counterclockwise to level the refrigerator and freezer door.

(3) After setting the level of the door, turn the keeper nut ( )

counterclockwise to tighten.

Caution : Do not force too hard to level the height. The hinge

pin can be pulled out (Adjustable range of height:

Maximum of 2/10 ).

HOW TO INSTALL REFRIGERATOR

- 8 -

Adjusting

Screw

Driver

Height

Difference

Height

Difference

Height

Difference

Height

Difference

Keeper nut

Down

Adjustment

hinge pin

Tool for

adjustment

2. Filter

Replace the filter when the indicator light comes on or the

performance of the icemker or water dispenser decreases

noticeably.

After changing the water filter cartridge, reset the water

filter status display and indicator light by pressing and

holding the FILTER Button for 3 seconds. (page 13)

1) Remove the old cartridge.

Twist the knob of the cartridge counterclockwise.

When the cartridge is removed, you will feel it click .

Pull out the cartridge.

NOTE: There will be some water (25cc) in the filter

cartridge. Some spilling may occur. Catch it in a

bowl or towel.

2) Replace with a new cartridge.

Take the new cartridge out of its packaging and remove

protective cover from the o-rings.

With cartridge knob in the vertical position, push the new

filter cartridge into the cover until it stops.

If you can’t turn the filter from side to side, it isn’t fully

inserted. Push it in firmly and twist it into place. You will

hear the snap when it clicks into place.

Using the handle, twist the cartridge clockwise about 1/4

turn.

3) Flush the Water System After Replacing Filter

Dispense water through the water dispenser for 3

minutes to purge the system.

There may be a little air in the line, causing noise or

hissing. Run the water at the dispenser until the hissing

stops to purge the air from the system.

NOTE: - To purchase replacement water filter cartridges,

visit your local appliance dealer or part distributor.

- You can also visit our website :

www.lgappliances.com or call 1-877-714-7481.

HOW TO INSTALL REFRIGERATOR

- 9 -

LG MDL PART NO MAKER

GR-L277SV(S)VA

LSC27950 SW/SB/ST

5231JA2006A CUNO

GR-L277SSWA

LSC27960ST

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

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

1) Confirm the amount of water supplied to the icemaker

(1) Press the button (Figure 1) to selsct the level of water (Optimum level Large Small.)

2) Icemaker Operation Test (Test mode)

(1) Press the button (Figure 1) for more than 3 seconds and It will start the Test mode.

(2) Test the operation of the operating part of the icemaker.

(3) If there is no problem with the operation, water is supplied through the water tube (up to the

selected lebel of water).

(4) The test mode is completed after the water is supplied.

Note : When using the test mode more than twice consecutively, water can overflow.

When the water overflows, wipe the ice storage bin.

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

HOW TO INSTALL REFRIGERATOR

- 10 -

Water Amount

Indicator Light

Power

Switch

Water Amount

Selection Button

Feeler

Arm

Check water level

Figure 1.

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