LG Electronics Refrigerator GR P227 L227 User Manual

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REFRIGERATOR

SERVICE MANUAL

CAUTION

PLEASE READ CAREFULLY THE SAFETY PRECAUTIONS OF THIS BOOK

BEFORE CHECKING OR OPERATING THE REFRIGERATOR.

COLOR: TITANIUM

MODEL: GR-P227/L227

GR-P257/L257

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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.

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.

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.

10. Do not touch the icemaker with hands or tools to

confirm the operation of geared motor.

2. When connecting power cord, please wait for more than

five minutes after power cord was disconnected from the

wall outlet.

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

reconstruct the refrigerator for themselves. It may

cause accident, electric shock, or fire.

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.

12. Do not store flammable materials such as ether,

benzene, alcohol, chemicals, gas, or medicine in the

refrigerator.

4. If the wall outlet is over loaded, it may cause fire. Please

use its own individual electrical outlet for the refrigerator.

13. Do not put flower vase, cup, cosmetics, chemicals,

etc., or container with full of water on the top of the

refrigerator.

5. Please make sure the outlet is properly earthed,

particularly in wet or damp area.

6. Use standard electrical components when replacing

them.

14. Do not put glass bottles with full of water into the

freezer. The contents shall freeze and break the glass

bottles.

7. Make sure the hook is correctly engaged.

Remove dust and foreign materials from the housing

and connecting parts.

15. When you scrap the refrigerator, please disconnect the

door gasket first and scrap it where children are not

accessible.

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SPECIFICATIONS

1. Ref No. : GR-P227

ITEMS

SPECIFICATIONS

ITEMS

FIRST DEFROST

SPECIFICATIONS

4 - 5 Hours

DIMENSIONS (mm)

NET WEIGHT (kg)

894(W)X790(D)X1753(H)

132

DEFROST CYCLE

DEFROSTING DEVICE

ANTI SWEAT HEATER

13 - 15 Hours

COOLING SYSTEM

TEMPERATURE CONTROL

DEFROSTING SYSTEM

Fan Cooling

Heater, Sheath

Micom Control

Full Automatic

Heater Defrost

Cyclo-Pentane

Dispenser Duct Door Heater

Dispenser Heater

Home Bar Heater

Damper Heater

INSULATION

ANTI-FREEZING HEATER

FREEZER LAMP

COMPRESSOR

EVAPORATOR

CONDENSER

REFRIGERANT

LUBRICATING OIL

CAPILLARY TUBE

DRIER

P.T.C. Starting Type

Fin Tube Type

40W (1 EA)

REFRIGERATOR LAMP

40W (1 EA) / 30W (1 EA)

Wire Condenser

R134a (180g)

FREOL @10G (310 cc)

ID 0.83

MOLECULAR SIEVE XH-7

948

894

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SPECIFICATIONS

2. Ref No. : GR-L227

ITEMS

SPECIFICATIONS

ITEMS

SPECIFICATIONS

MOLECULAR SIEVE XH-7

4 - 5 Hours

DIMENSIONS (mm)

NET WEIGHT (kg)

894(W)

790(D)

1753(H)

DRIER

132

FIRST DEFROST

COOLING SYSTEM

TEMPERATURE CONTROL

DEFROSTING SYSTEM

Fan Cooling

DEFROST CYCLE

13 - 15 Hours

Micom Control

Full Automatic

Heater Defrost

Cyclo-Pentane

DEFROSTING DEVICE

ANTI SWEAT HEATER

Heater, Sheath

Dispenser Duct Door Heater

Dispenser Heater

Damper Heater

INSULATION

ANTI-FREEZING HEATER

FREEZER LAMP

COMPRESSOR

EVAPORATOR

CONDENSER

P.T.C. Starting Type

Fin Tube Type

40W (1 EA)

REFRIGERATOR LAMP

40W (1 EA) / 30W (1 EA)

Wire Condenser

R134a (180g)

REFRIGERANT

LUBRICATING OIL

CAPILLARY TUBE

FREOL @10G (310 cc)

ID 0.83

948

894

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SPECIFICATIONS

1. Ref No. : GR-P257

ITEMS

SPECIFICATIONS

ITEMS

FIRST DEFROST

SPECIFICATIONS

4 - 5 Hours

DIMENSIONS (mm)

NET WEIGHT (kg)

894(W)X875(D)X1753(H)

132

DEFROST CYCLE

DEFROSTING DEVICE

ANTI SWEAT HEATER

13 - 15 Hours

COOLING SYSTEM

TEMPERATURE CONTROL

DEFROSTING SYSTEM

Fan Cooling

Heater, Sheath

Micom Control

Full Automatic

Heater Defrost

Cyclo-Pentane

Dispenser Duct Door Heater

Dispenser Heater

Home Bar Heater

Damper Heater

INSULATION

ANTI-FREEZING HEATER

FREEZER LAMP

COMPRESSOR

EVAPORATOR

CONDENSER

REFRIGERANT

LUBRICATING OIL

CAPILLARY TUBE

DRIER

P.T.C. Starting Type

Fin Tube Type

40W (1 EA)

REFRIGERATOR LAMP

40W (1 EA) / 30W (1 EA)

Wire Condenser

R134a (180g)

FREOL @10G (310 cc)

ID 0.83

MOLECULAR SIEVE XH-7

948

894

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SPECIFICATIONS

2. Ref No. : GR-L257

ITEMS

SPECIFICATIONS

ITEMS

SPECIFICATIONS

MOLECULAR SIEVE XH-7

4 - 5 Hours

DIMENSIONS (mm)

NET WEIGHT (kg)

894(W)

875(D)

1753(H)

DRIER

132

FIRST DEFROST

COOLING SYSTEM

TEMPERATURE CONTROL

DEFROSTING SYSTEM

Fan Cooling

DEFROST CYCLE

13 - 15 Hours

Micom Control

Full Automatic

Heater Defrost

Cyclo-Pentane

DEFROSTING DEVICE

ANTI SWEAT HEATER

Heater, Sheath

Dispenser Duct Door Heater

Dispenser Heater

Damper Heater

INSULATION

ANTI-FREEZING HEATER

FREEZER LAMP

COMPRESSOR

EVAPORATOR

CONDENSER

P.T.C. Starting Type

Fin Tube Type

40W (1 EA)

REFRIGERATOR LAMP

40W (1 EA) / 30W (1 EA)

Wire Condenser

R134a (180g)

REFRIGERANT

LUBRICATING OIL

CAPILLARY TUBE

FREOL @10G (310 cc)

ID 0.83

948

894

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PARTS IDENTIFICATION

1. Ref No. : GR-P227/GR-P257 (INTERNAL FILTER)

Cover PWB

Frame Display

Water Tube

Dispenser Lamp

Ice & Water

Dispenser Button

Home Bar

Freezer

compartment

Refrigerator

compartment

Milk product corner

Lamp

Automatic Icemaker

Shelf

Door Rack

Shelf

Lamp

Can Server (Optional)

Wine holder

(Plastic or wire)

Refreshment cente(rOptional)

Shelf (Folding or Normal)

Egg Box

Shelf

Drawer

Vegetable Drawer

Door rack

Humidity Switch

Drawer

Miracle Zone (Optional)

Fresh compartment

(Optional)

Door rack

Door Rack

Conversion switch

(Meats/Vegetables)

(Optional)

Lower cover

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PARTS IDENTIFICATION

2. Ref No. : GR-P227/GR-P257 (EXTERNAL FILTER)

Cover PWB

Frame Display

Dispenser Lamp

Ice & Water

Dispenser Button

Home Bar

Freezer

compartment

Refrigerator

compartment

Milk product corner

Lamp

Automatic Icemaker

Shelf

Door Rack

Shelf

Lamp

Can Server (Optional)

Wine holder

(Plastic or wire)

Refreshment cente(rOptional)

Shelf (Folding or Normal)

Egg Box

Shelf

Drawer

Vegetable Drawer

Door rack

Humidity Switch

Drawer

Miracle Zone (Optional)

Fresh compartment

(Optional)

Door rack

Door Rack

Conversion switch

(Meats/Vegetables)

(Optional)

Lower cover

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PARTS IDENTIFICATION

3. Ref No. : GR-P227/GR-P257 (INTERNAL FILTER)

Cover PWB

Frame Display

Water Tube

Dispenser Lamp

Ice & Water

Dispenser Button

Freezer

compartment

Refrigerator

compartment

Milk product corner

Lamp

Automatic Icemaker

Shelf

Door Rack

Shelf

Lamp

Can Server (Optional)

Wine holder

(Plastic or wire)

Refreshment cente(rOptional)

Shelf (Folding or Normal)

Egg Box

Shelf

Drawer

Vegetable Drawer

Door rack

Humidity Switch

Drawer

Miracle Zone (Optional)

Fresh compartment

(Optional)

Door rack

Door Rack

Conversion switch

(Meats/Vegetables)

(Optional)

Lower cover

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PARTS IDENTIFICATION

4. Ref No. : GR-P227/GR-P257 (EXTERNAL FILTER)

Cover PWB

Frame Display

Dispenser Lamp

Ice & Water

Dispenser Button

Freezer

compartment

Refrigerator

compartment

Milk product corner

Lamp

Automatic Icemaker

Shelf

Door Rack

Shelf

Lamp

Can Server (Optional)

Wine holder

(Plastic or wire)

Refreshment cente(rOptional)

Shelf (Folding or Normal)

Egg Box

Shelf

Drawer

Vegetable Drawer

Door rack

Humidity Switch

Drawer

Miracle Zone (Optional)

Fresh compartment

(Optional)

Door rack

Door Rack

Conversion switch

(Meats/Vegetables)

(Optional)

Lower cover

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HOW TO INSTALL REFRIGERATOR

1. How to Adjust Door Height of Refrigerator

I 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 :

Height

Difference

Height

Difference

Height

Difference

Height

Difference

Adjusting

Screw

Driver

Insert a driver · into the groove ³ of adjusting screw

and rotate driver in arrow direction (clockwise) until the

refrigerator becomes horizontal.

Insert a driver · into the groove ³ of adjusting screw

and rotate driver in arrow direction (clockwise) until the

refrigerator becomes horizontal.

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HOW TO INSTALL REFRIGERATOR

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

I Please confirm the following installation parts.

2. How to Install Water Pipe

I Before Installation

1. The icemaker requires the water pressure of 1.5 -

8.5kgf/cm². (It is acceptable if city water fills a cup of

180cc with water for 3 seconds)

2. Install booster pump where the city water pressure is

below 1.5kgf/cm²for normal operation of water and ice

dispenser.

Valve Feed

Rubber, Packing

Connector, Pipe

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.

Connector, Pipe

Tape, Teflon

Class.

Shape and Spec.

Nomenclature

Valve Feed

P/No

Remarks

Conve-

rtible

5221JA3001A

Common Use

Water

Valve

Connector, (MECH) Pipe

Conversion Connector(3/4")

Balance Conector(3/4")

Packing(ø24x3t)

4932JA3003A

6631JA3004A

6631JA3004B

3920JA3001B

Water

Conn-

ector

No Holes

Connector, (MECH) Pipe

4932JA3003B

Conversion Connector(W25)

Balance Conectoor(W25)

Packing(ø23x3t)

6631JA3004C

6631JA3004D

3920JA3001A

Connector, (MECH) Pipe

Conversion Connector(W28)

Balance Conector(W28)

Packing(ø26x3t)

4932JA3003C

6631JA3004E

6631JA3004F

3920JA3001C

No Holes

Connector, (MECH) Pipe

Conversion Connector(1/2")

Balance Conector(1/2")

Packing(ø19x3t)

4932JA3003D

6631JA3004G

6631JA3004H

3920JA3001D

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HOW TO INSTALL REFRIGERATOR

1. Connection of Pipe Connector A and B.

Caution : • Feed pipe should be connected to cold water

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

may occur.

1) Turn off main valve of water pipe.

2) Disconnect water tap from piping by loosening nuts.

• Please check rubber packing when connecting

feed pipe.

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.

Single Lever Type Faucet

(general)

General Type

Pipe Connector B

Hot Water

Feed

Valve

Pipe Connector A

Cold Water

Feed

Valve

Feed

Valve

Two Hands Type Faucet

Single Lever Type Faucet (one

hole, tech type and hand spray)

Feed

Valve

How to wind

Sealing Tapes.

Feed

Valve

2. Water Supply

2) Check leakage at connecting part, then arrange water

tube and locate the refrigerator at its regular place if

there is no leaking.

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.

Water Tube

Nut

- 12 -

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HOW TO INSTALL REFRIGERATOR

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.

I Outternal Filter

1. Filter Fixation

1) There are two types of filter. One is nut type and the other is connector type.

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

3) 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 8m when locating filter.

Nut

Inlet

Outlet

Water Tube

Connector Type

Nut Type

Hot Water

2. Filter Cleaning

Cold Water

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.

Filter Inlet

Feed Valve

Filter

Water

- 13 -

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HOW TO INSTALL REFRIGERATOR

I Install Water Filter (Applicable to some models only)

I Before Installing water filter

Control box

1. Before installing the filter, take out the top shelf of the

refrigerator after tilting it to the direction (ቢ) and lifting it

to the direction (ባ) 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.

Aligning with the guide line

and the fastening indication line

Control box

Aligning with the guide line

and the loosening indication line

I 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.

I Installing water filter

1. Initial installation of water filter

Remove the filter substitute cap by turning it

counterclockwise (ቢ) by 90 degrees and pulling it down.

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

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

water droppings on the shelf under the filter.

filter.

Remove the red cap from the filter and attach the

sticker. Insert the upper part of the filter (ቢ) 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.

Substitute

cap

Separation

of red cap

Adhesion

sticker

2. Replacement of water filter

While holding the lower part of the filter, turn it

counterclockwise (ቢ) by 90 degrees and pull it down.

Note : Check that the guideline and the loosening

indication line are aligned.

- 14 -

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HOW TO INSTALL REFRIGERATOR

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

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

Water Amount

Indicator Light

Feeler Arm

Power

Water Amount

Switch

Selection Button

1) The automatic icemaker can automatically make 6 cubes at a time, 70~120 pieces per day. This quantity may vary by

circumstance, including ambient temperature, door opening, freezer load. etc.

2) Icemaking stops when the ice bin is full.

3) If you don't want to use the automatic icemaker, turn the icemaker switch to OFF.

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

4) The water amount will vary depending on the water amount selection button.

Setting, as well as the water pressure of the connected water line.

NOTE

• It is normal that a noise is produced when ice drops into the ice storage bin.

- 15 -

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MICOM FUNCTION

1. Monitor Panel

1-1. GR-P227/GR-P257

Expres Freezer

Selection Button

Door Alarm Button/

Lock Button

Dispenser

Selection Button

Dispenser Light On/Off Button/

Filter Status Display RESET Button

Temperature Adjust Button

For Freezer Compartment

Temperature Adjust Button

For Refrigerator Compartment

1-2. Display Second Function

Demo Mode

Buzzer Mute Mode

Display Power

Saving Mode

1. Door Alarm Buzzer Mute Mode

Press ALARM/LOCK to turn the buzzer on or off.

2. Display Power saving Mode

It places display in standby mode until door is opened.

Press FREEZER and EXPRESS FRZ. buttons simultaneously to turn all LEDs ON and then OFF with the recognition

sound of Ding~ after 5 seconds. (Be sure not to press only one button to work.)

- 16 -

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MICOM FUNCTION

Once the mode activates, the display is always OFF. Until door is opened or display button is pressed. When 20 seconds

has elapsed after closing door or pressing button, the display turns OFF. To deactivate this mode is same as the activation

methods. The mode inactivates when resetting the power.

3. Exhibition Mode

Demo mode is available for displaying the refrigerator in a sales setting or similar condition.

It allows the display, dispenser, lights, and fan to operate without running the compressor.

To enter the DEMO mode, press and hold the REFRIGERATOR and EXPRESS FRZ. buttons simultaneously for 5

seconds until the Ding~ sounds.

To exit the DEMO mode and return to normal operation, press and hold the REFRIGERATOR and EXPRESS FRZ.

buttons simultaneously for 5 seconds until the Ding~ sounds again.

The refrigerator will default to the NORMAL mode (DEMO mode OFF) if the power fails.

2. Description of Function

2-1-1. Funnction of Temperature Selection

Division

Power Initially On

1st Press

2st Press

3th Press

4th Press

Temperature

Control

Medium

Medium Max

Max

Min

Medium Min

Freezer Control

-19 °C

3 °C

-22 °C

2 °C

-23 °C

0°C

-15 °C

6 °C

-17 °C

4 °C

Refrigeration

Control

* 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.

- 17 -

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MICOM FUNCTION

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 LOCK text is turned off at the right side of lock graphic of display with the lock

replease status.

2. If desiring to lock the dislay the dispenser and control panel, push on the LOCK button more than 3 seconds. LOCK is

turned on at the right side of lock graphic of display with lock status.

3. The buzzer sound and control panel and dispenser function is not performed even if pressing display button other than

lock key in the lock status.

4. If desiring to release the lock status and pressing the lock button more than 3 seconds. LOCK text is turned off at the right

side of lock graphic of display with the lock release status.

2-1-5. Filter condition display function

1. There is a replacement indicator light for the water filter cartridge on the dispenser.

2. Water filter needs replacement once six months.

3. Water filter light and FILTER RESET HOLD 3SECS text turn on to tell you need to replace the filter soon.

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

Then water filter light and FILTER RESET HOLD 3SECS text turn off with reset status.

- 18 -

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MICOM FUNCTION

2-2. Dispenser use selection

You can select water or ice.

DISPENSER

❉ 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.

Pressing

Switch

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 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 bin.

2-4. When ice maker does not operate smoothly

Ice is lumped together

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

the ice 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 bin out and discard all the ice then dry it and place it back. After

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

The unit is newly installed

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

2-5. Express Freezer

Please select this function for prompt freezer.

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

button.

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

when selecting Special Refrigeration “On”.

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

2-6. Lock

This button stops operation of different button.

• Locking or Release is repeated whenever pressing the

• Pressing the other button when selecting ‘ALARM/LOCK’, the button does

not operate.

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MICOM FUNCTION

2-7. Super freezing

1. EXPRESS FRZ freezing is a function to increase the cooling speed of the freezer compartment by running both the

compressor and the fan simultaneously.

2.EXPRESS FRZ is cancelled and the refrigerator returns to its default setting in the event of a power interruption.

3. SelectingEXPRESS FRZ changes only the speed of the cooling without affecting the set temperature.

4. The temperature can be adjusted even when EXPRESS FRZ has been selected and is in progress.

5. The freezer operates at whatever temperature was set at the time EXPRESS FRZ was selected.

6. If you select EXPRESS FRZ, the compressor and fan will run until it is deselected or the cycle time has elapsed.

(3 hours : compressor and fan run / 3 ~ 24 hours : COLDEST operation)

7. If a defrost cycle occurs while an EXPRESS FRZ is already running, EXPRESS FRZ runs for its remaining cycle time

after the defrost cycle is completed. If the defrost cycle takes longer than 30 minutes, EXPRESS FRZ will run for only 2

hours at the end of the defrost cycle.

8. If you press EXPRESS FRZ during a defrost cycle, the EXPRESS FRZ indicator (LCD or LED, depending upon the

model) will illuminate but the compressor will not operate until the defrost cycle is complete.

9. If you press EXPRESS FRZ within 7 minutes of compressor cut-off, the compressor will not operate until the 7-minute

delay has passed.

10. The freezer fan motor runs at high speed during the EXPRESS FRZ cycle.

2-8. Miracle Zone function

1. Miracle Zone is located at the bottom room of R-room and maintains optimum temperature depending on foods through

selection of desired foods kept in the Miracle Zone from vegetables to meat with a display.

Set temperature in the Miracle Zone by using a separate selection button at the right side of the Miracle Zone. Initial

notch is in “veg.”status in application of power. Whenever pressing buttons, notch changes while LED is displayed in the

order of “veg. ¡ cheeze ¡ meat ¡ veg.”.

Provided that selected notch LED turns off if opening doors of the R-room and it turns off if closing doors of R-room.

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

with a miracle zone at the rear side of miracle zone.

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

selecting final notches.

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

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

Miracle Zone NOTCH

Setting Indication

meat

cheeze

veg.

-1°C

2°C

4°C

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

of RPM and standard RPM.

2. MICOM only operates in the input of initial power or super freezing operation or load response operation for the high

speed of RPM and operates in the standard RPM in other general operation.

3. If opening doors of freezing / cold storage room or home bar while fan motor in the freezing room operates, the freezing

room fan motor normally operates (If being operated in the high speed of RPM, it converts operation to the standard

RPM). However, if opening doors of freezing room or home bar, the freezing room fan motor stops.

4. As for monitoring of BLDC fan motor error in the freezing room, MICOM immediately stops the fan motor by determining

that the BLDC fan motor is locked or poor if there would be position signal for more than 115 seconds at the BLDC motor.

Then it displays failure (refer to failure diagnosis function table) at the display part of refrigerator, the BLDC motor doesn’t

operate more. If you want to operate the BLDC motor, turn off and on power resource.

- 20 -

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MICOM FUNCTION

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

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

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

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

display).

2-11. Door opening alarm

1. Buzzer generates alarm sound if doors are not closed even when more than a minute consecutively has passed with

doors of freezing / cold storage room or home bar opened.

2. Buzzer rings three times in the interval of 0.5 second after the first one-minute has passed after doors are opened and

then repeats three times of On/Off alarm in the cycle of every 30 seconds.

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

released.

Doors of freezing /

cold storage room

or home bar

Closing Opening Closing Opening

Closing

3 Times 3 Times 3 Times 3 Times

BUZZER

Within

a minute

A minute

seconds seconds seconds

2-12. Ringing of button selection buzzer

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

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

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

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

1.8 second three times.

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

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

2-14. Frost removal function

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

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

becomes 4 ~ 4.5 hour.

3. Frost removal is completed if temperature of a frost removal sensor becomes more than 5°C after starting frost removal.

Poor frost removal is not displaced if it does not arrive at 5°C even if two hours have passed after starting frost removal.

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

- 21 -

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MICOM FUNCTION

2-15. Sequential operation of built-in product

Built-in products such as compressor, frost removal heater, freezing room fan, Cooling Fan and step motor damper are

sequentially operated as follows for preventing noise and part damage occurred due to simultaneous operation of a lot of

parts in applying initial power and completing test.

Function

Load Operation Sequence

Remark

When temperature

of a frost removal

sensor becomes

more than 45°C

(In purchase,

If error occurs

during operation,

initial operation is

not done.

MIRACLE

ZONE

F-FAN

C-FAN

R-STEP

MOTOR

DAMPER

HOME

BAR

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

POWER

COMP

STEP

DAMPER

MOTOR

HEATER

movement)

When

Sequence of

temperature of a

frost removal

sensor becomes

less than 45°C

(In power failure,

service)

DAMPER

0.3

sec.

0.3

sec.

0.3

sec.

load operation

when closing

F-room and

R-room.

FROST

REMOVAL

HEATER

FROST

HOME

BAR

HOME

POWER

REMOVAL

HEATER

OFF

BAR

DUCT DOOR

HEATER

DUCT DOOR

HEATER

OFF

HEATER

OFF

MIRACLE

ZONE

sec.

PIPE

0.3

sec.

0.3

sec.

0.3

sec.

F-FAN

C-FAN

HOME

BAR

R-STEP

MOTOR

DAMPER

sec.

sec. COMP sec.

STEP

DISP'

HEATER

DISP'

HEATER

OFF

DAMPER

MOTOR

HEATER

Test mode 1

(Compulsory

function)

If pressing switch

once more in the

test mode 2 or

temperature of a

frost removal

MIRACLE

ZONE

TEST

S/W

R-STEP

0.3

sec.

0.3

sec.

F-FAN

C-FAN

0.3

sec.

0.3

sec.

OTHER

LOAD

COMP

STEP

MOTOR

DAMPER

(PRESS

Once)

DAMPER

MOTOR

OFF

sensor is more

than 5°C, it

immediately

Test mode 2

(Compulsory frost

removal)

returns to the test

mode for initial

operation

(COMP operates

after 7 minutes).

0.3

sec.

0.3

sec.

0.3

sec.

TEST

S/W

FROST

F-FAN

C-FAN

OFF

R-STEP

MOTOR

DAMPER

COMP

OFF

REMOVAL

HEATER

(PRESS

2 Times)

- 22 -

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MICOM FUNCTION

2-16. 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.

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.

✽ All LCDs turn off other than freezer room notch temperature display and refrigerator room notch temperature

display(failure code indication part) in case of indicating failure modes(except for Note1, Note2).

- 23 -

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MICOM FUNCTION

2-17. 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 irrespective of test mode and then is reset to the normal status.

3. Function adjustment button is not perceived during performance of test mode.

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. Even if pressing the test button during failure code display, test mode will not be performed.

Mode

Operation

Contents

Remarks

Test 1

Press test button once

(strong cold mode)

1. Continuous operation of compressor

Freezing fan turns off in

2. Continuous operation of freezing bldc motor door opening

(high-speed RPM) and cooling bldc motor

3. Defrost heater turns off

4. Stepping motor damper is completely

opened (open of baffle)

5. Miracle zone stepping motor damper is

completely closed.

6. All display LCD graphics turns on.

Test 2

Press test button once at

the test mode 1 status

(forced defrost mode)

1. Compressor OFF

2. Freezing bldc motor and cooling bldc motor

turn off

Return to the normal mode

when the defrost sensor is

above +5°C

3. Defrost heater turns on

4. Stepping motor damper is completely

closed (closing of baffle)

5. Miracle zone stepping motor damper is

completely closed.

6. All display LCD graphics turns off (only LCD

turns on for(A) “MIDIUM” status, (B)

“MIDIUM” status)

Normal

Status

Press test button once at

the test mode 2 status

Return to the initial status.

Compressor will operate

after delay for 7 minutes

- 24 -

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MICOM FUNCTION

✻ LCD check function: If simultaneously pressing super freezer button and freezing 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).

2-18. 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 (rubber 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 (Bank, Ice).

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 (Bank, Ice).

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.

- 25 -

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EXPLATION FOR MICOM CIRCUIT

1. Explanation for PWB circuit

1-1. Power circuit

The power circuit includes a Switched Mode Power Supply (SMPS). It consists of a rectifier (BD1 and CE1) converting AC

to DC, a switch (IC2) switching the DC voltage, a transformer, and a feedback circuit (IC3 and IC4).

Caution : Since high voltage (310 Vdc) is maintained at the power terminal, wait at least 3 minutes after unplugging the

appliance to check the voltages to allow the current to dissipate.

Voltage of every part is as follows:

Part

VA1

CE1

CE2

CE3

CE4

CE5

Voltage

230 Vac

310 Vdc

16 Vdc

12 Vdc

16 Vdc

5 Vdc

(1) GR-P227/L227

- 26 -

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EXPLATION FOR MICOM CIRCUIT

1-2. Oscillation circuit

The oscillation circuit generates a basic clock signal for synchronization and time calculation related to the transmission of

data and calculations made by the MICOM (IC1). The oscillator (OSC1) must always be replaced with an exact replacement

part. If this specification is changed, the change will affect the time calculations of the MICOM and it might not work at all.

(1) GR-P227/L227/P257/L257

1-3. Reset circuit

The RESET circuit allows various parts of the MICOM, such as RAM, defrosting, etc., to be restarted from the initial state

when power is interrupted or restored. A LOW signal applied to the reset terminal for 10 ms causes the MICOM to reset

itself. During normal operation, the voltage at the reset terminal is 5 Vdc. If the reset fails, the MICOM will not operate.

(1) GR-P227/L227/P257/L257

- 27 -

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EXPLATION FOR MICOM CIRCUIT

1-4. Load/dispenser operation, door opening circuit

1. LOAD DRIVING CIRCUIT

✽ The fan operates at the regular speed even if the door of the refrigerator or freezer is opened. When the doors are closed,

the fan reverts to its original speed.

✽ (A), (B), (C), and (D) of door switch for the freezer or refrigerator are connected to the door open sensing circuit in parallel

toward both ends of switch to determine door open at MICOM.

✽ In the TEST mode, the fan will stop if any door is opened. It will resume operation when the door is closed.

Defrost

Heater

AC Converting

Relay

Refrigerator

LAMP

Dispenser

Heater

Type of Load

Compressor

IC6-16

Measuring part (IC6)

IC6-13

IC6-12

Within 1 V

12 V

IC6-15

IC6-14

Status

OFF

(1) GR-P227/L227/P257/L257

- 28 -

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EXPLATION FOR MICOM CIRCUIT

1-5. Dispenser operation circuit

(1) GR-P227/L227/P257/L257

1) Check load driving status

WATER VALVE

PILOT

VALVE

GEARED

MOTOR

SOLENOID

CUBE

SOLENOID

DISPENSER

Type of Load

WATER

Measuring part

IC7-15

IC7-14

IC7-13

Within 1 V

12 V

IC7-12

IC7-11

Status

OFF

2) Lever Switch sensing circuit

Measuring part

IC1(Micom) (No. 16)

Lever S/W

5 V

0 V

(60 Hz)

OFF

- 29 -

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EXPLATION FOR MICOM CIRCUIT

1-6. Door opening sensing circuit

(1) GR-P227/L227/P257/L257

Measuring part

IC1 (MICOM) No. (44, 45) / (45, 46) / (47, 48) Pin

Door of Freezer and Refrigerator

Closing

5 V ( A - B , C - D . Switch at both ends are at Off status)

0 V ( A - B , C - D . Switch at both ends are at On status)

Opening

✽ Since door switches (A) and (B) are interconnected, if either fails, the other will not respond properly.

✽ If either switch fails, the light will not come on.

- 30 -

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EXPLATION FOR MICOM CIRCUIT

1-7. Temperature sensing circuit

(1) GR-P227/L227/P257/L257

The circuits involving the freezer and refrigerator sensors control the temperature in both the freezer and the refrigerator.

The icemaker sensor detects when ice is made. The defrost sensor determines both the need for defrosting and the

efficiency of the defrost operation. See the table below for voltages and checkpoints.

SENSOR

Freezing sensor

CHECK POINT

POINT A Voltage

POINT B Voltage

POINT C Voltage

POINT D Voltage

POINT E Voltage

NORMAL(-22 °F ~ 122 °F)

IN SHORT

IN OPEN

Defrost sensor

Refrigerator sensor 1

Refrigerator sensor 2

Magic room/ Opti Fresh Sensor

0.5 V~4.5 V

0 V

5 V

- 31 -

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EXPLATION FOR MICOM CIRCUIT

1-8. Switch entry circuit

The following circuits are sensing signal form the damper motor reed switch for testing and diagnosing the refrigerator.

(1) GR-P227/L227/P257/L257

1-9. Option designation circuit (model separation function)

(1) GR-P227/L227/P257/L257

The circuits shown above vary according to which features are included on your particular model.

Separation

Connection Status

Connection

OUT

Application Standard

Miracle Zone exist

OP1

Miracle Zone don’t exist

uThese circuits are preset at the factory and cannot be altered.

- 32 -

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EXPLATION FOR MICOM CIRCUIT

1-10. Stepping motor operation circuit

(1) GR-P227/L227/P257/L257

The motor is driven by magnetism formed in the areas of the coils and the stator. Rotation begins when a HIGH signal is

applied to MICOM Pin 33 of IC10 (TA7774F). This causes an output of HIGH and LOW signals on MICOM pins 34 and 35.

Explanation) The stepping motor is driven by sending signals of 3.33 mSEC via MICOM pins 33, 34, and 35, as shown in

the chart below. These signals are output via terminals 10, 11, 14, and 15 via input terminals 3, 6, and 8 of

IC10 (TA7774F), the motor drive chip. The output signals allow the coils wound on each phase of the stator to

form a magnetic field, which causes rotation. Input to the terminals INA and INB of IC10 as shown in the chart

below drives the motor.

CCW (Reverse rotation)

(Positive rotation) CW

INA

INB

- 33 -

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EXPLATION FOR MICOM CIRCUIT

1-11. Fan motor driving circuit (freezer, mechanical area)

1. The circuit cuts all power to the fan drive IC, resulting in a standby mode.

2. This circuit changes the speed of the fan motor by varying the DC voltage between 7.5 Vdc and 16 Vdc.

3. This circuit stops the fan motor by cutting off power to the fan when it senses a lock-up condition.

a , d part

b part

e part

2V or less

8 ~ 16V

Motor OFF

Motor ON

2V or less

12 ~ 14V

2 ~ 3V

(1) GR-P227/L227/P257/L257

- 34 -

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EXPLATION FOR MICOM CIRCUIT

1-12. Temperature compensation and temperature compensation circuit

1. Temperature compensation in freezer and refrigerator

(1) GR-P227/L227/P257/L257

Temperature compensation at refrigerator

Temperature compensation at freezer

Freezer

Refrigerator

Resistance value

(RCF1)

Temperature

compensation

Remarks

Warmer

compensation

(RCR1)

180 kΩ

56 kΩ

33 kΩ

18 kΩ

12 kΩ

10 kΩ

8.2 kΩ

5.6 kΩ

3.3 kΩ

2 kΩ

180 kΩ

56 kΩ

33 kΩ

18 kΩ

12 kΩ

10 kΩ

8.2 kΩ

5.6 kΩ

3.3 kΩ

2 kΩ

+5 °C [+9°F]

+4 °C [+7.2°F]

+3 °C [+5.4°F]

+2 °C [+3.6°F]

+1 °C [+1.8°F]

0 °C [0°F]

+2.5 °C [+4.5°F]

+2.0 °C [+3.6°F]

+1.5 °C [+2.7°F]

+1.0 °C [+1.8°F]

+0.5 °C [+0.9°F]

0 °C [0°F]

Reference temperature

-1 °C [-1.8°F]

-2 °C [-3.6°F]

-3 °C [-5.4°F]

-4 °C [-7.2°F]

-5 °C [-9°F]

-0.5 °C [-0.9°F]

-1.0 °C [-1.8°F]

-1.5 °C [-2.7°F]

-2.0 °C [-3.6°F]

-2.5 °C [-4.5°F]

470 Ω

Cooler

u Temperature compensation table by adjustment value (difference value against current temperature)

Ex) If you change compensation resistance at a refrigerator (RCR1) from 10 kΩ (current resistance) to 18 kΩ (modified

resistance), the temperature at the refrigerator will increase by +1°C[+1.8°F].

- 35 -

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EXPLATION FOR MICOM CIRCUIT

u Temperature compensation table at the refrigerator is as follows:

Modification

resistance

470 Ω

2 kΩ

3.3 kΩ 5.6 kΩ 8.2 kΩ 10 kΩ 12 kΩ 18 kΩ 33 kΩ 56 kΩ 180 kΩ

1 °C 1.5 °C 2 °C 2.5 °C 3 °C 3.5 °C 4 °C 4.5 °C 5 °C

Current

resistance

0.5 °C

470Ω

[0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F] [4.5 °F] [5.4 °F] [6.3 °F] [7.2 °F] [8.1 °F] [9 °F]

change

0.5 °C

1 °C

1.5 °C 2 °C

2.5 °C

3 °C

3.5 °C

4 °C

4.5 °C

2 kΩ [0.9 °F]

Down change

[0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F] [4.5 °F] [5.4 °F] [6.3 °F] [7.2 °F] [8.1 °F]

1 °C 0.5 °C

3.3 kΩ [1.8 °F] [0.9 °F]

0.5 °C

1 °C 1.5 °C

2 °C

2.5 °C

3 °C

3.5 °C

4 °C

[0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F] [4.5 °F] [5.4 °F] [6.3 °F] [7.2 °F]

Down

change

1.5 °C

1 °C

0.5 °C

0.5 °C 1 °C

1.5 °C

2 °C

2.5 °C

3 °C

3.5 °C

5.6 kΩ [2.7 °F] [1.8 °F] [0.9 °F]

[0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F] [4.5 °F] [5.4 °F] [6.3 °F]

Down

change

2 °C

1.5 °C

1 °C

0.5 °

0.5 °C

1 °C

1.5 °C

2 °C

2.5 °C

3 °C

8.2 kΩ [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F]

[0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F] [4.5 °F] [5.4 °F]

Refrigerator

(RCR1)

Down

Drop

change

2.5 °C

2 °C

1.5 °C

1 °C

0.5 °C

1 °C

1.5 °C

2 °C

2.5 °C

10 kΩ [4.5 °F] [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F]

[0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F] [4.5 °F]

Down

change

3 °C

2.5 °C

2 °C

1.5 °C

1 °C 0.5 °C

0.5 °C

1 °C

1.5 °C

2 °C

12 kΩ [5.4 °F] [4.5 °F] [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F]

[0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F]

Down

change

3.5 °C

3 °C

2.5 °C

2 °C

1.5 °C 1 °C

0.5 °C

1 °C

1.5 °C

18 kΩ [6.3 °F] [5.4 °F] [4.5 °F] [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F]

[0.9 °F] [1.8 °F] [2.7 °F]

Down

change

4 °C

3.5 °C

3 °C

2.5 °C

2 °C 1.5 °C

1 °C

0.5 °C

1 °C

33 kΩ [7.2 °F] [6.3 °F] [5.4 °F] [4.5 °F] [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F]

[0.9 °F] [1.8 °F]

Down

change

4.5 °C

4 °C

3.5 °C

3 °C

2.5 °C 2 °C

1.5 °C

1 °C

0.5 °C

[0.9 °F]

56 kΩ [8.1 °F] [7.2 °F] [6.3 °F] [5.4 °F] [4.5 °F] [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F]

Down

change

5 °C

4.5 °C

4 °C

3.5 °C

3 °C 2.5 °C

2 °C

1.5 °C

1 °C

0.5 °C

180 kΩ [9 °F] [8.1 °F] [7.2 °F] [6.3 °F] [5.4 °F] [4.5 °F] [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F]

Down

change

u Temperature compensation at the freezer is performed the same as at the refrigerator. The value for the freezer is twice

that of the refrigerator.

u This circuit enters the necessary level of temperature compensation for adjusting the appliance. The method is the same

for every model in this appliance family.

- 36 -

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EXPLATION FOR MICOM CIRCUIT

2. Compensation circuit for temperature at freezer

(1) GR-P227/L227/P257/L257

Temperature compensation in CUT

JCR1

JCR2

JCR3

JCR4

+1 °C [+1.8 °F]

-1 °C [-1.8 °F]

+2 °C [+3.6 °F]

-2 °C [-3.6 °F]

Compensation

for too warm

Compensation

for too cold

Temperature compensation value

at refrigerator

Remarks

JCR3

JCR4

CUT

JCR1

JCR2

0 °C (In shipment from factory)

-1 °C [-1.8 °F]

+1 °C [+1.8 °F]

-2 °C [-3.6 °F]

+2 °C [+3.6 °F]

0 °C [0 °F]

CUT

0 °C [0 °F]

CUT

0 °C [0 °F]

CUT

-1 °C [-1.8 °F]

+1 °C [+1.8 °F]

0 °C [0 °F]

CUT

u This circuit allows adjustment of the set temperature for compensation by changing jumpers at locations JCR1~JCR4.

- 37 -

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EXPLATION FOR MICOM CIRCUIT

1-13. Communication circuit and connection L/Wire between main PCB and display PCB

The following communication circuit is used for exchanging information between the main MICOM of the Main PCB and the

dedicated MICOM of the LED (LCD) Display PCB.

A bi-directional lead wire assembly between the two boards is required for the display to function properly.

Poor communication occurs if a continuous information exchange fail to continue for more than 2 minutes between main

MICOM of main PCB and LCD (LED) dedicated MICOM for LCD (LED) control of display PCB.

Main PCB

Main MICOM

L/Wire FD/H(4-wires)

DC 12V

Display PCB

LCD(LED) dedicated MICOM

GND

Transmission (error status)

Reception (notch status)

(1) GR-P227/L227/P257/L257

- 38 -

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EXPLATION FOR MICOM CIRCUIT

2) Sensor resistance characteristics table

Refrigerator sensor 1&2

Measuring Temperature (°C)

Freezing Sensor

Defrost sensor, Ambient sensor

-20 °C

-15 °C

-5 °C

22.3 kΩ

16.9 kΩ

13.0 kΩ

10.1 kΩ

7.8 kΩ

6.2 kΩ

4.9 kΩ

3.9 kΩ

3.1 kΩ

2.5 kΩ

2.0 kΩ

1.4 kΩ

0.8 kΩ

77 kΩ

60 kΩ

47.3 kΩ

38.4 kΩ

30 kΩ

0 °C

+5 °C

24.1 kΩ

19.5 kΩ

15.9 kΩ

13 kΩ

+10 °C

+15 °C

+20 °C

+25 °C

+30 °C

+40 °C

+50 °C

11 kΩ

8.9 kΩ

6.2 kΩ

4.3 kΩ

u Resistance value allowance of sensor is 5%.

u When measuring the resistance value of the sensor, allow the temperature of that sensor to stabilize for at least 3 minutes

before measuring. This delay is necessary because of the sense speed relationship.

u Use a digital tester to measure the resistance. An analog tester has to great a margin of error.

u Resistance of the cold storage sensor 1 and 2 shall be measured with a digital tester after separating CON8 of the PWB

ASSEMBLY and the MAIN part.

u Resistance of the freezing sensor shall be measured with a digital tester after separating CON7 of the PWB ASSEMBLY

and the MAIN part.

- 39 -

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EXPLATION FOR MICOM CIRCUIT

1-14. Miracle Zone STEPPING MOTOR / Display

Miracle zone stepping motor damper is same as 1-8 stepping motor operation circuit and the miracle zone display turns on

only when the R-door opens.

- 40 -

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ICEMAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR

1. Operation Principle

1-1. Operation Principle of Icemaker

Power On

Start Position

Icemaking

Mode

Harvest

Mode

Ice Making Mode

Fill

Park Position

Test Mode

Water

amount selection button

Harvest Fill Icemaking

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

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

- 41 -

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ICEMAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR

2. ICEMAKER FUNCTIONS

2-1. Start Position

1. After POWER OFF or power outage, check the EJECTOR's position with MICOM initialization to restart.

2. How to check if it is in place:

- Check HIGH/LOW signals from HALL SENSOR in MICOM PIN.

3. Control Method to check if it is in place:

(1) EJECTOR is in place,

- It is an initialized control, so the mode can be changed to icemaking mode.

(2) EJECTOR isn't in place:

A. If EJECTOR is back in place within 2 minutes with the motor on, it is being initialized. If not, go to Step B.

B. Control the heater using the temperature sensor until the EJECTOR reaches the correct location.

2-2. Icemaking Mode

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

temperature of the Tray with Icemaking SENSOR.

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

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

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

2-3. Harvest Mode

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

completed.

2. Harvest mode:

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

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

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

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

If the EJECTOR does not rotate once within 5 minutes in B mode, separate heater control mode starts operating to

prevent the EJECTOR from being constrained. (It is recommended that the user open for ice to return to normal mode.)

2-4. Fill/Park Position

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

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

the table below.

Water supply amount TABLE

STAGE

TIME TO SUPPLY

INDICATIONS

REMARKS

5 sec.

The water amount will vary depending

on the water control switch setting, as

well as the water pressure of the

connected water line.

5.5 sec.

(FIRST STAGE)

6 sec.

- 42 -

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ICEMAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR

2-5. Function TEST

1. This is a forced operation for TEST, Service, cleaning, etc. It is operated by pressing and holding the Water amount selection

button for 3 seconds.

2. The test works only in the Icemaking Mode. It cannot be entered from the Harvest or Fill mode. (If there is an ERROR, it

can only be checked in the TEST mode.)

3. Caution! If the test is performed before water in the ice tray is frozen, the ejector will just pass through the water. When

the Fill mode begins (Stage 4), unless the water supply has been shut off, added water will overflow into the ice bin. If the

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

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

5. After Stage 5 is completed, the Ice Maker returns to MICOM control. The time needed to supply water resets to the pre-

test setting.

6. This icemaker function test takes about 90 seconds in case, there aren’t ices in the ice tray. If there are ices in the ice

tray, it can take more than 90 seconds.

Diagnosis TABLE

STAGE

ITEMS

INDICATOR

REMARKS

Five seconds after heater starts, a

heater will go off if the temperature by

sensor is higher than 10°C

HEATER

Five seconds after heater starts, you

can confirm that a motor is moving.

MOTOR

HALL IC I

(detection of

position)

After the icemaker detects that ice has been

made, the motor and heater are off but on

standby until the cycle is cancelled.

HALL IC II

(detection of

position)

You can confirm HALL IC detection of

position.

Two seconds after detection of initial

position, you can confirm that valve is on.

VALVE

Reset

Five seconds after fifth stage is completed,

The icemaker resets to initial status.

Return to Status prior to

TEST MODE

3. Defect diagnosis function

3-1. ERROR CODES shown on Icemaker water supply control panel

DIVISION

INDICATOR

CONTENTS

REMARKS

Mark time to

supply

Display switch

operates properly

Normal

None

Icemaking

Sensor

malfunction

Make sure that the wire

on each sensor is

connected.

Open or short-circuited wire

ERROR indicators in table can be checked only in TEST mode.

- 43 -

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CIRCUIT

(1) GR-P227/L227/P257/L257GR-P227/L227/P257/L257

- 44 -

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TROUBLE DIAGNOSIS

1. Trouble Shooting

CLAIMS.

CAUSES AND CHECK POINTS.

HOW TO CHECK

* Measuring instrument :

Multi tester

1) No power on outlet.

2) No power on cord.

1. Faulty start

Bad connection between adapter and outlet. (faulty adapter)

The Inner diameter of adapter.

The distance between holes.

I Check the voltage.

If the voltage is within 85%

of the rated voltage, it is OK.

The distance between terminals.

The thickness of terminal.

I Check the terminal

movement.

Bad connection between plug and adapter (faulty plug).

The distance between pins.

Pin outer diameter.

3) Shorted start circuit.

Check both terminals of

power cord.

Power conducts : OK.

No power conducts : NG

No power on

power cord.

Disconnected copper wire.

Power cord is disconnected.

Faulty soldering.

Internal electrical short.

Faulty terminal contact.

Loose contact.

- Large distance between

male terminal.

- Thin female terminal.

Terminal disconnected.

Bad sleeve assembly.

Weak connection.

Short inserted cord length.

Worn out tool blade.

Disconnected.

Capacity of O.L.P is small.

Characteristics of O.L.P is bad.

Bad connection.

O.L.P is off.

I Check both terminals of

O.L.P.

If power conducts : OK.

If not : NG.

Power is

disconnected.

Inner Ni-Cr wire blows out.

Bad internal connection.

Faulty terminal caulking (Cu wire is cut).

Bad soldering.

No electric power on compressor. - Faulty compressor.

Power does not conduct. - Damage.

Faulty PTC.

I Check the resistance of both

terminals.

Bad characteristics. - Initial resistance is big.

Too loose.

Assembly is not possible.

At normal temperature 6 :

OK.

Bad connection with

compressor.

If disconnected : ∞.

Bad terminal connection.

4) During defrost.

Start automatic defrost.

Cycle was set at defrost when the refrigerator

was produced.

- 45 -

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TROUBLE DIAGNOSIS

CLAIMS.

CAUSES AND CHECK POINTS.

2) Refrigeration system is clogged.

HOW TO CHECK

2. No cooling.

I Check the clogged

evaporator by heating (as

soon as the cracking sound

begins, the evaporator start

freezing)

Moisture

clogged.

Residual moisture

in the evaporator.

Air Blowing.

Not performed.

Too short.

Impossible moisture

confirmation.

Low air pressure.

Leave it in the air. During rest time.

After work.

Caps are missed.

Not dried in the compressor.

Elapsed more than 6 months after drying

Caps are missed.

Residual moisture.

No pressure when it is open.

Insufficient drier

capacity.

Dry drier - Drier temperature.

No electric

power on

therm-

Leave it in the air.

Check on package

condition.

ostat.

Good storage after

finishing.

Residual moisture

in pipes.

Caps are missed.

During transportation.

During work.

Air blowing.

Not performed.

Performed.

Too short time.

Low air pressure.

Less dry air.

Moisture penetration - Leave it in the air. - Moisture penetration.

into the refrigeration oil.

I The evaporator does not cool

from the beginnig (no evidece

of misture attached).

The evaporator is the same

as before even heat is

applied.

Short pipe insert.

Weld joint

clogged.

Pipe gaps.

Too large.

Damaged pipes.

Too much solder.

The capillary tube inserted depth. - Too much.

Capillary tube melts. - Over heat.

Drier cloggeing.

Clogged with foreign materials.

Desiccant powder.

Weld oxides.

Drier angle.

Reduced cross section by cutting. - Squeezed.

Compressor cap is disconnected.

Foreign materials are in the pipe.

Foreign material clogging.

- 46 -

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TROUBLE DIAGNOSIS

CLAIMS.

CAUSES AND CHECK POINTS.

HOW TO CHECK

3. Refrigeration

is weak.

1) Refrigerant Partly leaked.

Weld joint leak.

Parts leak.

2) Poor defrosting capacity.

Drain path (pipe) clogged.

I Check visually.

Inject P/U into drain hose.

Inject through the

hole.

Seal with drain.

P/U lump input.

Screw input.

Foreign materials

penetration.

Other foreign materials

input.

Cap drain is not disconnected.

Defrost heater does not

generate heat.

Wire is cut.

- Lead wire.

- Heating wire.

- Contact point

between heating and

electric wire.

Dent by fin evaporator.

Heating wire is corroded

- Water penetration.

Parts

disconnected.

Heater

Sheath

I Check terminal

Conduction: OK.

No conduction: NG.

If wire is not cut, refer to

resistance.

P=Power

V=Voltage

R=Resistance

Bad terminal connection.

V²

P= —

V²

R= —

- 47 -

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TROUBLE DIAGNOSIS

CLAIMS.

CAUSES AND CHECK POINTS.

HOW TO CHECK

3. Refrigeration

is weak.

Residual

frost.

Weak heat from heater.

Sheath Heater - rated.

Heater plate - rated.

Too short defrosting time.

Defrost Sensor.

- Faulty characteristics.

Seat-D(missing, location. thickness).

Structural fault.

Gasket gap.

Air inflow through the fan motor.

Bad insulation of case door.

No automatic defrosting.

Defrost does not return.

3) Cooling air leak.

Bad gasket adhestion

Gap.

Bad attachment.

Contraction.

Door sag.

Bad adhesion.

Weak binding force at hinge.

4) No cooling air circulation.

I Check the fan motor

conduction: OK.

No conduction: NG.

Faulty fan motor.

Fan motor. Self locked.

Wire is cut.

Bad terminal contact.

Door switch.

Faults.

Contact distance.

Button pressure.

Melted contact.

Contact.

Refrigerator and freezer switch reversed.

Button is not pressed.

Poor door

attachment.

Door liner

(dimension).

Contraction inner

liner.

Misalignment.

Bad terminal

connection.

P/U liquid leak.

- 48 -

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TROUBLE DIAGNOSIS

CLAIMS.

CAUSES AND CHECK POINTS.

4) No cooling air circulation.

HOW TO CHECK

3. Refrigeration

is weak.

Faulty fan motor.

Fan is

Fan shroud contact. - Clearance.

Damping evaporator contact.

Accumulated residual frost.

constrained.

Fan overload. - Fan misuse.

Bad low termperature RPM characteristics.

Rated power misuse.

Small cooling air

discharge.

Insufficient

motor RPM

Low voltage.

Faulty fan.

Fan misuse.

Bad shape.

Loose connection. - Not tightly connected.

Insert depth.

Shorud.

Bent.

Ice and foreign materials on rotating parts.

5) Compressor capacity.

Rating misuse.

Small capacity.

Low valtage.

Malfunction of charging cylinder.

Wrong setting of refrigerant.

6) Refrigerant

too much or too little.

Insufficient compressor. - Faulty compressor.

7) Continuous operation

- No contact of temperature controller. - Foreign materials.

I Check visually after

disassembly.

8) Damper opens continuously.

I Check visually after

disassembly.

Foreign materials

jammed.

P/U liquid dump.

EPS water sediment.

Screw.

Failed sensor. - Position of sensor.

Characteristics

of damper.

Bad characteristics of its own temperatue.

Parts misuse.

Charge of temperature - Impact.

characteristics.

9) Food storing place. - Near the outlet of cooling air.

- 49 -

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TROUBLE DIAGNOSIS

CLAIMS.

CAUSES AND CHECK POINTS.

HOW TO CHECK

4. Warm

1) Colgged cooling path.

refrigerator

compartment

temperature.

P/U liquid leak.

Foreign materials. –– P/U dump liquid.

2) Food storate.

Store hot food.

Store too much at once.

Door open.

Packages block air flow.

5. No automatic

operation.

(faulty

1) Faulty temperature sensor in freezer or refrigerator compartment.

I Inspect parts measurements

and check visually.

Faulty contact.

Faulty temperature characteristics.

contacts.)

2) Refrigeration load is too much.

Food.

Too much food.

Hot food.

Frequent opening and closing.

Cool air leak.

Poor door close. – Partly opens.

3) Poor insulation.

High ambient temperature.

Space is secluded.

4) Bad radiation.

5) Refrigerant leak.

6) Inadequate of refrigerant.

7) Weak compressor discharging power.

Different rating.

Small capacity.

8) Fan does not work.

9) Button is positioned at "strong."

6. Dew and

1) Ice in freeezer compartment.

External air inflow. –– Rubber motor assembly direction(reverse).

ice formation.

Door opens

but not closes.

Weak door closing power.

Stopper malfunction.

Door sag.

Food hinders door closing.

Gap around gasket. –– Contraction, distortion, loose, door twisted, corner not

fully inserted.

Food vapor. –– Storing hot food. –– Unsealed food.

2) Condensation in the refrigerator compartment.

Door opens

Insufficient closing.

but not closes.

Door sag.

Food hinders door closing.

Gasket gap.

3) Condensation on liner foam.

Cool air leak

Not fully filled.

Toop table part.

and transmitted.

Out plate R/L part.

Flange gap. –– Not sealed.

Gasket gap.

- 50 -

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TROUBLE DIAGNOSIS

CLAIMS.

CAUSES AND CHECK POINTS.

HOW TO CHECK

6. Dew and

ice formation.

4) Dew on door.

Dew on the duct door. - Duct door heater is cut.

Dew on the dispense

recess.

Recess Heater is cut.

Duct door is open. / Foreign material clogging.

Dew on the door surface. Not fully filled. Surface.

Liquid shortage.

Liquid leak.

Cormer.

P/U liquid contraction.

Dew on the

Bad wing adhesion. Wing sag(lower part).

gasket surface.

Door liner shape mismatch.

Too much notch.

Broken.

Corner.

Home Bar heater is cut.

5) Water on the floor.

Dew in the refrigerator compartment.

Defrosted water overflows.

Clogged discharging hose.

Discharging hose

location.

Evaporation tray located at wrong place.

Tray drip.

Damaged.

Breaks, holes.

Small Capacity.

Position of drain.

7. Sounds

1) Compressor compartment operating sounds.

Compressor sound

inserted.

Sound from machine itself.

Sound from vibration.

Restrainer.

Rubber Too hard.

seat.

Distorted.

Aged.

Burnt.

Stopper. Bad Stopper Not fit

assembly.

(inner

diameter

of stopper).

Tilted.

Not

Compressor base not connected.

Bad welding compressor stand(fallen).

Foreign materials in the compressor

compartment.

O.L.P. sound.

Chattering sound.

Insulation paper vibration.

Pipe contacts each other. – Narrow interval.

No vibration damper. Damping rubber-Q.

Damping rubber-S.

Capacitor noise.

Pipe sound.

Capillary tube unattached.

- 51 -

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TROUBLE DIAGNOSIS

CLAIMS.

CAUSES AND CHECK POINTS.

1) Compressor compartment operating sounds.

HOW TO CHECK

7. Sounds

Transformer sound.

Its own fault. –– Core gap.

Bad connection. –– Correct screw connection.

Drip tray vibration sound.

Bad assembly.

Distortion.

Foreign materials inside.

Back cover machine sound.

Bad connection.

Partly damaged.

Condenser drain sound.

Not connected.

Bad pipe caulking.

2) Freezer compartment sounds.

Fan motor sound.

Normal operating sound.

Vibration sound.

Aged rubber seat.

Bad torque for assembling motor

bracket.

Sounds from fan

contact.

Fan guide contact.

Shroud burr contact.

Damping evaporator contact.

Residual frost contact.

Poor treatment Cord heater.

Narrow evaporator interval.

Unbalance.

Surface machining conditions.

Fan distortion.

Misshappen.

Unbalance fan sounds.

Burr.

Ice on the fan. –– Air intake (opposite to motor

rubber assembly.)

Motor shaft

Supporter disorted.

contact sounds.

Tilted during motor assembly.

Resonance.

Evaporator noise.

Evaporator pipe contact. –– No damping evaporator.

Sound from refrigerant. –– Stainless steel pipe shape in

accumulator.

Sound from fin evaporator and pipe during expansion

and contraction.

3) Bowls and bottles make contact on top shelf.

4) Refrigerator roof contact.

5) Refrigerator side contact.

6) Insufficient Lubricants on door hinge.

- 52 -

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TROUBLE DIAGNOSIS

CLAIMS.

CAUSES AND CHECK POINTS.

HOW TO CHECK

8. Faulty lamp

(freezer and

refrigerator

1) Lamp problem.

Filament blows out.

Glass is broken.

Not inserted.

2) Bad lamp assembly.

compartment).

Loosened by vibration.

3) Bad lamp socket.

Disconnection.

Bad soldering.

Bad rivet contact.

Short.

Water penetration. Low water

level in tray.

Bad elasticity of contact.

Bad contact(corrosion).

4) Door switch.

Its own defect.

Refrigerator and freezer switch is reversed.

Travlel distance.

Bad connection.

Bad terminal contact.

P/U liquid leak..

9. Faulty internal

voltage(short).

1) Lead wire is damaged.

I Connect conduction and

non-conduction parts and

check with tester.

Wire damage when assembling P.T.C. Cover.

Outlet burr in the bottom plate.

Pressed by cord heater. lead wire, evaporator pipe.

2) Exposed terminal.

Conduction: NG.

Resistance∞: OK.

Compressor Compartment terminal. - Touching other

components.

Freezer compartment terminal. - Touching evaporator pipe.

3) Faulty parts.

Transformer.

Coil contacts cover.

Welded terminal parts contact cover.

Bad coil insulation.

Compressor.

Plate heater.

Melting fuse.

Cord heater.

Sealing is broken.

Pipe damaged.

Bad sealing.

Moisture penetration.

Sheath heater.

- 53 -

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TROUBLE DIAGNOSIS

CLAIMS.

CAUSES AND CHECK POINTS.

HOW TO CHECK

10. Structure,

appearance

and others.

1) Door foam.

Sag.

Weak torque of

hinge connection.

Bolt is loosened during

transportaion.

Not tightly fastened.

Screw worn out .

Adhesion surface.

Weak gasket

adhesion.

Fixed tape.

Not well fixed.

Hinge interference.

Bigger door foam.

Hinge-Pin tilted-Poor flatness.

No washer.

Noise during

operation.

No grease and not enough

quantity.

Malfunction.

Not closed Interference between door liner and inner liner.

Refrigerator

compartment is

opened when freezer

compartment is

Stopper worn out.

Bad freezer compartment door

assembly.

No stopper.

closed (faulty stopper).

2) Odor.

High.

Faulty damper control.

Button is set at "weak".

Door is open (interference by

food).

Temperature of

refrigerator

compartment.

Deodorizer.

Food Storage.

Others.

No deodorizer.

Poor capacity.

Seal condition.

Store special odorous food.

Long term storage.

Odors from chemical procucts.

- 54 -

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2. Faults

2-1. Power

Problems

Causes

- Power cord cut.

Checks

Measures

Remarks

No power on

outlet.

- Check the voltage with tester.

- Check visually.

-Replace the components.

- Faulty connector insertion.

- Faulty connection between plug

and adapter.

-Reconnect the connecting parts.

- Reconnect the connecting parts.

- Check visually.

Fuse blows out. - Short circuit by wrong connection. - Check the fuse with tester

- Find and remove the cause of

problem(ex. short, high voltage,

low voltage).

- Replace with rated

fuse after confirming

its specification.

- Low voltage products are

connected to high voltage.

- Short circuit by insects.

- Electricity leakage.

or visually.

- Check the input volt are with tester

(between power cord and products). - Replace with rated fuse.

- Check the resistance of power cord

I If fuse blowns out

frequently, reconfirm

the cause and prevent.

- High voltage.

with testerf (if it is 0Ω, it is shorted).

- Short circuit of components

(tracking due to moisture and dust

penetration).

2-2. Compressor

Problems

Causes

Checks

Measures

Remarks

Compressor

does not

- Faulty PTC.

- Check the resistance.

- If resistance is infinite, replace it

with new one.

Vlaue:∞ is defective.

operate.

- If it is not infinite, it is normal.

- Check other parts.

- Compressor is frozen.

- If compressor assembly parts are

normal(capacitor, PTC, OLP),

apply power directly to the

- During forced operation:

- Operates: Check other parts.

- Not operate: Replace the frozen

compressor with new one, weld,

evacuate, and recharge refrigerant.

compressor to force operation.

Auxiliary winding

Main winding

Power

OLP

It starts as soon as it is

contacted.

• Refer to weld repair procedures.

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2-3. Temperature

Problems

Causes

Checks

Measures

- Replace fan motor.

Remarks

High

Poor cool air circulation due to faulty - Lock –– Check resistance with a

temperature

in the freezer

compartment.

fan motor.

tester.

0Ω: short.

∞Ω: cut.

- Reconnect and reinsert.

- Rotate rotor manually and check

rotation.

- Wire is cut.

- Bad terminal contact: Check

terminal visually.

- Fan constraint. – Fan shroud

contact: Confirm

visually.

- Maintain clearance and remove ice

(Repair and/or replace shroud if fan

is constrained by shroud

deformation).

– Fan icing:

Confirm visually.

Faulty fan motor due to faulty door

switch operation.

- Iced button (faulty) operation:

Press button to check

- Confirm icing causes and repair.

- Replace door switch.

- Faulty button pressure and contact:

Press button to check operation.

- Door cannot press door switch

button: Check visually.

- Door sag: fix door.

- Door liner bent:replace door or

attach sheets.

Bad radiation conditions in

compressor compartment.

- Check the clearance between the

refrigerator and wall (50 mm in

minimum).

- Keep clearance between

refrigerator and walls (minimum

50mm).

- The fan may be

broken if cleaning

performs while the

refrigerator is on.

- Check dust on the grill in

compressor compartment.

- Remove dust and contaminants

from grill for easy heat radiation.

- Check dust on the coils condenser. - Remove the dust with vacuum

cleaner from the coils condenser

while the refrigerator is off.

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2-4. Cooling

Problems

Causes

Refrigerant leak.

Checks

Check sequence

Measures

Remarks

High

Weld the leaking part, recharge the

refrigerant.

Drier must be replaced.

temperature

in the freezer

compartment.

1. Check the welded parts of the

drier inlet and outlet and drier

auxiliary in the compressor

compartment (high pressure side).

2. Check the end of compressor

sealing pipe (low pressure side).

3. Check silver soldered parts.

(Cu + Fe / Fe + Fe).

4. Check bending area of wire

condenser pipe in compressor

compartment (cracks can

happen during bending).

5. Check other parts (compressor

compartment and evaporators in

freezer compartment).

Shortage of refrigerant.

Check frost formation on the surface - Find out the leaking area, repair,

Drier must be replaced.

of evaporator in the freezer

compartment.

evacuate, and recharge the

refrigerant.

- If the frost forms evenly on the

surface, it is OK.

- No leaking, remove the remaining

refrigerant, and recharge new

refrigerant.

- If it does not, it is not good.

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Problems

High

Causes

Checks

Check sequence.

Measures

Remarks

Cycle pipe is clogged.

- Heat up compressor discharging

weld joints with touch, disconnect

the pipes, and check the clogging.

Remove the causes of clogging,

Direr must be replaced.

temperature in

the freezer

1. Check temperature of condenser

manually.

compartment.

If it is warm, it is OK.

If it is not, compressor discharging weld, evacuate, and recharge

joints might be clogged.

2. Manually check whether hot line

pipe is warm.

the refrigerant.

- If it's warm, it's OK. If it's not,

condenser discharging line weld

joints might be clogged.

If it is warm, it's OK.

If it is not, condenser outlet weld

joints might be colgged.

Disconnect with torch, remove the

causes, evacuate, and recharge

seal refrigerant.

Leak at loop pipe weld joint

(discharge) in compressor.

Check sequence.

Replace the compressor, weld,

Drier must be replaced.

1. Manually check whether

condenser is warm, It is not warm

and the frost forms partly on the

evaporator in the freezer

compartment.

evacuate, and recharge refrigerant.

Faulty cooling fan in the compressor Check sequence.

compartment. 1. Check cooling fan operation.

- Replace if motor does not operate.

- If fan is disconnected, check fan

damage and reassemble it.

2. Check that cooling fan is

disconnected from the motor.

I Refer to fan motor disassembly

and assembly sequence.

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2-5. Defrosting failure

Problems

Causes

Checks

Measures

Remarks

No defrosting. Heater does not generate heat as

the heating wire is cut or the circuit

is shorted.

1. Check the resistance of heater.

0Ω: Short. ∞Ω: Cut.

Heating wire is short and wire is cut. Seal the lead wire with

• Parts replacement: Refer to parts

insulation tape and heat

contraction tube if the cut

lead wire is accessible to

repair.

Tens to thousands Ω: OK.

2. Check the resistance between

housing terminal and heater

surface.

explanations.

1) Heating wire is damaged when

inserting into the evaporator.

2) Lead wire of heater is cut.

3) Heating wire at lead wire contacts

is cut.

0Ω: Short. ∞Ω: Cut.

Tens to thousands Ω: Short.

Sucking duct and discharging hole

are clogged:

1. Confirm foreign materials. In case 1) Push out impurities by inserting

of ice, insert the copper line

through the hole to check.

2. Put hot water into the drain

(check drains outside).

copper wire.(Turn off more than

3hours and pour in hot water if

frost is severe.)

1. Impurities.

2. Ice.

2) Put in hot water to melt down frost.

3) Check the water outlet.

4) Push the heater plate to sucking

duct manually and assemble the

disconnected parts.

Gap between Sucking duct and

Heater plate(Ice in the gap).

1. Confirm in the Sucking duct.

1) Turn off the power, confirm

impurities and ice in the gap, and

supply hot water until the ice in the

gap melts down.

2) Push the Heater plate to drain

bottom with hand and assemble

the disconnected parts.

Wrong heater rating (or wrong

assembly).

1. Check heater label.

Faults:replace.

2. Confirm the capacity after

substituting the resistance value

into the formula.

- How to replace: Refer to main parts.

V²

(V: Rated voltage of user country)

P= ––

(R: Resistance of tester[Ω])

Compare P and lavel capacity.

Tolerance: 7%

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Problems

Causes

Checks

Measures

Remarks

No defrosting

Melting fuse blows out.

1) Lead wire is cut.

2) Bad soldering.

- Check melting fuse with tester. -

If 0Ω: OK.

Faullty parts: parts replacement.

- Check wire color when maeasuring

resistance with a tester.

If ∞Ω: wire is cut.

Ice in the Sucking duct.

1) Icing by foreign materials in the

duct.

1. Check the inner duct with mirror. 1) Turn power off.

2) Raise the front side(door side),

support the front side legs, and let

the ice melt naturally. (If power is

on, melt the frost by forced

defrosting.)

2) Icing by cool air inflow through

the gap of heater plate.

3) Icing by the gap of heater plate.

2. Check by inserting soft copper

wire into the duct (soft and thin

copper not to impair heating wire).

3) Reassemble the heater plate.

Bad cool air inflow and discharge,

and bad defrosting due to faulty

contact and insertion (bad connector

insertion into housing of heater,

melting, fuse and motor fan).

1. Turn on power, open or close the 1) Check the faulty connector of

door, check that motor fan

operates (If it operates, motor fan

is OK).

housing and reassemble wrongly

assembled parts.

2) If the parts are very damaged,

remove the parts and replace it

with a new one.

2. Disconnect parts in the refrigerator

compartment, check the connection

around the housing visually,

defrost, and confirm heat generation

on the heater. Do not put hands on

the sheath heater.

3. Check the parts which have faults

described in 1, 2 (mechanical

model: disconnect thermostat

from the assembly).

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2-6. Icing

Problems

Causes

Checks

Measures

Remarks

Icing in the

refrigerator

compartment.

1) Bad circulation of cool air.

- Clogged intake port in the

refrigerator compartment.

- Check the food is stored properly

(check discharge and intake port

are clogged).

- Be acquainted with how to use.

- Sealing on connecting parts.

- Check the damper and replace

it if it has defects.

- Check the defrost

related parts if problem

is caused by faulty

defrosting.

- Damper icing. - Sealing is not good.

- Check icing on the surface of

- Pipe icing.

- Discharging

pipe icing.

- Too much food is stored and clogs baffle and cool air path (pipe) after - Check defrost. (After forced

the discharge port.

- Bad defrosting.

dissembling the container box.

- Check icing at intake ports of

freezer and refrigerator

compartment.

defrosting, check ice in the

evaporator and pipes.)

2) Faulty door or refrigerator

compartment.

- Check gasket attached conditions. - Correct the gasket attachment

- Replacement should

be done when it

- Check door assembly conditions.

conditions and replace it.

- Faulty gasket.

- Door assembly and replacement.

cannot be repaired.

- Faulty assembly.

3) Overcooling in the refrigerator

compartment.

- Check refrigerator compartment

is overcooled (when button

pressed on "weak").

- Replace faulty parts.

- Faulty damper in the refrigerator

compartment.

- Check parts are faulty.

- Faulty MICOM (faulty sensor)

4) Bad defrosting

- Check frost on the evaporator

after dissembling shroud and fan

grille.

- Check parts related to defrosting.

- Moisture cannot frost

- Heater wire is cut.

- Defective defrost sensor.

- Defrosing cycle.

- Check defrosting. (Check ice on the on the evaporator but

evaporator and pipe.)

can be sucked into the

refrigerator, being

- Check ice on intake port of freezer

and refrigerator compartment.

condensed and iced,

interferes with cool air

circulation, and

suppresses sublimation.

5) Customers are not familiar with

this machine.

- Check food interferes with door

closing.

- Be acquainted with how to use.

- Door opens.

- Check ice on the ceilings.

- High temperature, high moisture,

and high load.

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Problems

Causes

Checks

Measures

Remarks

Ice in the freezer 1) Bad cooling air circulation.

compartment. - Intake port is colgged in the freezer

- Surface of fan compartment.

- Check food storage conditions

- Be acquainted with how to use.

- Check the parts related

to defrosting if the

visually.(Check clogging at intake - Check defrost (Check ice on the

and discharging port of cooling air.) evaporator and pipes after forced

problem is caused by

the faulty defrosting.

grille.

- Discharging port is Clogged.

- Check food occupation ratio in

volume(Less than 75%).

defrosting).

- Wall of freezer - Too much food is stored.

compartment. - Bad defrosting.

- Check frost on the evaporator after

dissembling shroud and fan grille.

- Check icing at intake port of

refrigerator compartment.

- Cool air

discharging port.

- Basket(rack)

area.

- Food surface. 2) Bad freezer compartment door

- Check gasket attachment

conditions.

- Correct the gasket attachement

conditions and replace it.

- Replace when it can not

be repaired.

- Icing in the

shute.

- Faulty gasket

- Faulty assembly

- Check door assembly conditions.

- Door assembly and replacement.

3) Over freezing in the freezer

compartment.

- Refrigerator operates pull down.

(Check if it is operated

-Replace defective parts.

- Faulty MICOM.

intermittently)

- The Temperature of freezer

compartment is satisfactory, but

over freezing happens in the

refrigerator compartment even

though the notch is set at "weak".

4) Bad defrosting.

- Heater wire is cut.

- Faulty defrost sensor.

- Defrosting cycle

- Check frost on the evaporator after - Check parts related to defrosting.

dissembling shroud and grille.

- Check ice on the intake port in the

refrigerator compartment.

- Check defrosting.(Check ice on the

evaporator and pipes after forced

defrosting.)

5) User is not familiar with how to

use.

- Check food holds door open.

- Check ice on the ice tray.

- Be acquainted with how to use.

- Door opens.

- High moisture food(water) is stored.

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2-7. Sound

Problems

Causes

Checks

Measures

Remarks

"Whizz" sound 1. Loud sound of compressor

operation.

1.1 Check the level of the

refrigerator.

1) Maintain horizontal level.

2) Replace rubber and seat if they

are sagged and aged.

1.2 Check the rubber seat

conditions (sagging and aging). 3) Insert rubber where hand contact

reduces noise in the pipe.

2. Pipes resonat sound which is

connected to the compressor.

2.1 Check the level of pipes

connected to the compressor

and their interference.

4) Avoid pipe interference.

5) Replace defective fan and fan

motor.

2.2 Check rubber inserting

conditions in pipes.

6) Adjust fan to be in the center of

bell mouth of the fan guide.

2.3 Touch pipes with hands or screw 7) Leve a clearance between

-driver (check the change of

sound).

interfering parts and seal gaps in

the structures.

8) Reassemble the parts which make

sound.

3. Fan operation sound in the freezer 3.1 Check fan insertion depth and

compartment.

blade damage.

9) Leave a clearance if evaporator

pipes and suction pipe touch

freezer shroud.

3.2 Check the interference with

structures.

3.3 Check fan motor.

3.4 Check fan motor rubber insertion

and aging conditions.

4. Fan operation sound in the

compressor compartment.

4.1 Same as fan confirmation in the

refrigerator.

4.2 Check drip tray leg insertion.

4.3 Check the screw fastening

conditions at condenser and

drip tray.

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Problems

Causes

Checks

Measures

Remarks

Vibration sound. 1. Vibration of shelves and foods in

1-1. Remove and replace the

shelves in the refrigerator

1-2. Check light food and container

on the shelves.

1) Reassemble the vibrating parts

and insert foam or cushion where

vibration is severe.

("Cluck")

the refrigerator.

2. Pipes interference and capillary

tube touching in the compressor.

compartment.

2) Leave a clearance where parts

interfere with each other.

2-1. Touch pipes in the compressore

compartment with hands.

2-2 Check capillary tube touches

cover back.

3. Compressor stopper vibration.

4. Moving wheel vibration.

5. Other structure and parts

vibration.

3) Reduce vibration with rubber

and restrainer if it is severe.

(especially, compressor and pipe).

4) Replace compressor stopper if it

vibtates severely.

3-1 Check compressor stopper

vibration.

4-1 Check vibration of front and rear

moving wheels.

5-1 Touch other structures and parts.

Irregular sound. 1. It is caused by heat expansion

1-1 Check time and place of sound

sources.

1) Explain the principles of refrigeration

and that the temperature difference

between operation and defrosting

can make sounds.

("Click").

and contraction of evaporator,

shelves, and pipes in the

refrigerator.

2) If evaporator pipe contacts with other

structures, leave a clearance between

them (freezer shroud or inner case).

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Problems

Causes

Checks

Measures

Remarks

Sound "Burping" It happens when refrigerant expands - Check the sound of refrigerant at the

- Check the restrainer attached on the

evaporator and capillary tube weld

joints and attach another restrainer.

(almost the same at the end of capillary tube.

initial installation.

as animals crying

sound).

- Check the sound when the refrigerator

starts operation after forced defrosting. - If it is continuous and servere, insert

- Check the restrainer attachment

conditions on the evaporator and

capillary tube weld joints.

capillary tube again (depth:15 3mm)

- Fasten the capillary tube to suction

pipes or detach in the compressor

compartment.

- Explain the principles of freezing

cycles.

Water boiling or

flowing sound.

It happens when refrigerant passes

orifice in accumulator internal pipes by

the pressure difference between

condenser and evaporator.

- Check the sound when compressor is

turned on.

- Explain the principles of freezing cycles

and refrigerant flowing phenomenon by

internal pressure difference.

- Check the sound when compressor is

turned off.

- If sound is servere, wrap the

accumulator with foam and restrainer.

Sound of whistle When door closes, the internal pressure - Check the sound by opening and

- Broaden the cap of discharge hose for

when door

closes.

of the refrigerator decreases sharply

below atomosphere and sucks air into

the refrigerator, making the whistle

sound.

closing the refrigerator or freezer doors. defrosting in the compressor

compartment.

- Seal the gap with sealant between out

and inner cases of hinge in door.

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2-8. Odor

Problems

Causes

Checks

Measures

Remarks

Food Odor.

Food (garlic, kimchi, etc)

- Check the food is not wrapped.

- Check the shelves or inner

wall are stained with food juice.

- Check the food in the vinyl wraps.

- Chedk food cleanliness.

- Dry deodorizer in the shiny and

windy place.

- Store the food in the closed

container instead of vinyl wraps.

- Clean the refrigerator and set

button at "strong".

Plastic Odor.

Odors of mixed food and plastic

odors.

- Check wet food is wrapped with

plastic bowl and bag.

- Clean the refrigerator.

- Persuade customers not to use

plastic bag or wraps with wet food

or odorous foods.

- It happens in the new refrigerator.

Odor from the

deodorizer.

Odor from the old deodorizer.

- Check the deodorizer odors.

- Dry the deodorizer with dryer and

then in the shiny and windy place.

- Remove and replace the

deodorants.

*Deodorizer : option

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2-9. Micom

Problems

Symptom

Causes

Bad connector

Checks

Measures

Remarks

Bad PCB

All display

Bad connection

Visual check on connector

connection.

Reconnect

connector.

electric power. LCD are off.

between Main PCB

and display circuit.

connection from main

PCB to display PCB.

Defective PCB trans.

PCB Trans winding is

cut.

Check resistance of PCB Trans Replace PCB Trans Applicable to

input and output terminals with or PCB.

model without

dispenser.

PCB Trans temperature a tester. (If resistance is infinity,

fuse is burnt out.

trans winding is cut).

DefectivePCB electric Defective regulator IC

Check voltage at input/output

terminals.

Replace regulator.

Replace PCB fuse.

Refer to electric

circuit in circuit

explanation.

circuit parts.

(7812, 7805).

PCB electric terminal

fuse is burnt out.

STR Parts are

damaged.

Check fuse in PCB electric

terminal with a tester.

Check if STR No. 2 and 3 pins Replace parts.

are cut when power is off.

Applicable to

model with

dispenser.

Abnormal

display LCD

operation

Bad connection

Lead Wire connecting

main PCB and display

Check Lead Wire terminals

connecting Main PCB and

Reconnect Lead

Wire and directly

connect defective

contact terminal to

Lead Wire.

between Main PCB

and display circuit.

PCB is cut or connector display PCB with a tester.

terminal connection is

bad.

Defective LCD.

Check if all LCD are on when

Main PCB Test switch is

Replace display

PCB.

Refer to display

circuit in circuit

explanation.

pressed (or when both freezer

key and power freezer key are

pressed at the same time for

more than one second.)

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Problems

Symptom

Freezer

Causes

Checks

Measures

Remarks

Bad cooling.

Compressor does

Compressor Lead Wire Check compressor Lead Wire

Reconnect Lead

Wire.

temperature is not start.

high.

is cut.

with a tester.

Defective compressor

driving relay.

Measure voltage at PCB CON2 Replace relay(RY1

(3&9) after pressing main PCB and RY2) or PCB.

test switch once. It is OK if

Refer to load

driving circuit in

circuit

voltage is normal.

explanation.

Defective freezer

Defective Freezer

sensor parts.

Check resistance of freezer

sensor with a tester.

Replace freezer

sensor.

Refer to

sensor.

resistance

characteristics

table of sensor in

circuit

Freezer sensor is

substituted for other

sensor.

Confirm the color of sensor in

circuits (main PCB sensor

housing).

Repair main PCB

sensor housing

explanation.

Defective freezer fan

motor.

Fan motor lead wire

is cut.

Check fan motor lead wire

with a tester.

Reconnect lead

wire.

• Defective door switch Measure the voltage between

• Replace door

switch (freezer,

refrigerator and

home bar).

Refer to load

driving circuits in

circuit

(freezer, refrigerator,

home bar).

PCB power blue line and fan

motor after pressing test switch

of Main PCB. If the voltage is

normal, it is OK.

• Defective fan motor.

• Defective fan motor

driving relay.

explanation.

• Replace fan motor.

Faulty defrost.

Refer to faulty defrost items in trouble diagnosis

functions.

Refer to trouble

diagnosis

function.

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Problems

Symptom

Wrong

Causes

Defective Step Motor

Checks

Measures

Remarks

Bad cooling

Check Step Motor

damper motor and

reed switch and lead

wire are cut. Check

Step Motor damper

part.

Check if Step Motor damper

motor and reed switch lead

wire are cut with a tester.

Refer to Step Motor damper

in parts repair guide.

Reconnect lead

wire.

Refrigerator

temperature.

Damper.

Replace Step Motor

damperor refrigerator

control box Assembly.

Replace relay or

PCB.

Check Step Motor

damper Motor driving

relay in PCB.

Refer to Step Motor damper

in parts repair guide.

Refer to single

motor damper

driving circuits

in circuit

explanation.

Foreign materials in Step Check Step Motor damper

Remove foreign

materials.

Motor damper baffles.

Ice formation on

Step Motor damper

baffles.

baffle visually.

Check if Step Motor damper

Heater wire is cut with a

tester.

Replace Step Motor

damper or refrigerator

control Box Assembly.

Defective refrigerator

sensor

Defective refrigerator

sensor parts.

Check the resistance of

Replace refrigerator Refer to sensor

refrigerator sensor with a tester. sensor.

resistance

characteristic

table in circuit

explanation.

Refrigerator sensor is

substituted for other

sensor.

Check the sensor color in the

circuit. (main PCB sensor

housing.)

Repair main PCB

sensor housing.

Defective refrigerator

sensor assembly

condition.

Check if refrigerator sensor

Fix again the

is not fixed at cover sensor but refrigerator sensor.

inner case visually.

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Problems

Symptom

Causes

Checks

Measures

Remarks

Bad defrost.

Defrost is not

working.

Defrost lead wire is cut.

Check if defrost lead wire is cut with a

tester.

Reconnect Lead

Wire.

Defective defrost driving relay.

Defective defrost sensor parts.

Check the voltage of CON2 (1 and 7)

with a tester after pressing main

PCB test switch twice.

Replace relay (RY 7 Refer to load

and RY 3) or PCB.

driving conditions

check in circuit

explanation.

If the voltage is normal then it is OK.

Check the resistance of defrost sensor

with a tester.

Replace defrost

sensor.

Refer to sensor

resistance

characteristic

table of circuit

explanation.

Defective

buzzer

Buzzer

Defective connecting lead wire from

main PCB to door switch.

Check lead wire related to door

switch with a tester.

Repair lead wire.

continuously

rings or door

opening alarm

does not work.

Defective door switch parts.

Refer to door switch in parts repair

guide.

Replace door switch.

Defective

Buzzer does

Key input wire is cut or bad connector

terminal contact in main PCB and

display PCB connecting lead wire.

Check input wire with a tester.

Reconnect lead

Refer to display

display button not ring and

key does not

wire and replace or circuit in circuit

directly connect bad explanation.

contact terminal to

sense even

button is

lead wire.

pressed.

Key is continuously depressed due to

structural interference.

Disassemble frame display and confirm Adjust or replace

visually.

interfering

structures.

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Problems

Symptom

Causes

Checks

Measures

Remarks

Defective

Buzzer rings

Trouble mode indication.

Check trouble diagnosis function.

Repair troubles

Refer to mode

indication in

function

display button. but key does

not sense even

button is

explanations.

pressed.

Door Buzzer

Buzzer

Defective connecting lead wire from

main PCB to door switch.

Check lead wire associated with door

Repair lead wire.

Check model

continuously

rings or door

switch.

with dispenser.

Defective freezer compartment door

Refer to door switch in parts repair

guide.

Replace Freezer

compartment door

switch.

opening alarm switch parts.

does not work.

Bad water/ice

dispenser.

Ice and water

are not

Defective connecting lead wire from

Check Lead Wire associated with lever Repair lead wire.

switch with a tester.

Main PCB to lever switch.

dispensed.

Defective lever switch parts

Defective photo coupler IC parts.

Refer to door switch in parts repair guide. Replace lever switch.

Check voltage change at photo coupler Replace photo

output terminals with lever switch

pressed. It is OK if voltage change is

between 0V - 5V.

coupler IC or PCB.

Defective relay associated with ice

dispense (geared motor, cube and

dispenser solenoid).

Check relay (RY4, RY5, RY12)

with a tester.

Replace defective

relay.

Defective parts associated with ice

dispense (geared motor, cube and

dispenser solenoid).

Check resistance of parts with a tester. Replace defective

parts.

Defective relay associated with water

dispense.

Check relay (RY7) with a tester

Replace defective

relay.

Defective parts associated with water

dispenser.

Check resistance of parts with a tester. Replace defective

parts.

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TROUBLE DIAGNOSIS

3. Cooling Cycle Heavy Repair

3-1. The Heavy Repair Standards for Refrigerator with R134a Refrigerant

NO.

Items

Pipe and piping

system opening time.

Unit

Min.

Standards

Pipe:within 1 hour. To protect The opening time should be reduced to a

Comp:within Moisture half of the standards during rain and

10 minutes. Penetration. rainy seasons (the penetration of water

Purposes

Remarks

Drier:within

20 minutes.

into the pipe is dangerous).

Welding.

Nitrogen Weld under

Pressure. Nitrogen

atmosphere

To protect - Refet to repair note in each part.

oxide scale - R134a refrigerant is more susceptible to

formation.

leaks than R12 and requires more care

during welding.

(N²pressure:

0.1~0.2 kg/cm²)

- Do not apply force to pipes before and

after welding to protect pipe from

cracking.

N²sealed parts.

Confirm N2 Confirm air leaking To protect - In case of evaporator parts, if it doesn't

leak.

sounds when

removing rubber

cap.

moisture

noise when removing rubber cap blow

penetration. dry air or N²gas for more than 1 min

use the parts.

Sound:usable

No sound:not usable

Refrigeration Evacuation

Min.

Torr

More than

40 minutes.

Below 0.03(ref)

To remove

moisture.

Cycle.

time

Vacuum

degree

Note:Only applicable to the model

equipped with reverse flow protect

plate.

Vacuum

High and low

Vaccum efficiency can be improved by

operating compressor during evacuation.

Pressure sides are

evacuated at the

same time for

models above 200

Vacuum

piping

Use R134a

exclusive

manifold.

To protect The rubber pipes for R12 refrigerant shall

mixing of be melted when they are used for R134a

mineral and refrigerant(causes of leak).

ester oils.

To protect

R12 Refri-

Pipe

coupler

Use R134a

cxclusive.

gerant mixing.

Outlet

R134a exclusive.

(Socket)

Plug

R134a exclusive

Refrigerant weighing.

Use R134a

exclusively.

Weighing

allowance: 5g

Note:Winter:-5g

Summer:+5g

Do not mix - Do not weight the refrigerant at too hot or

with R12

refrigerant. - Use copper bombe

Socket:2SV Plug: 2PV R134a

too cold an area.(25°C is adequate.)

Note:Do not burn O-ring (rubber) during

welding.

Drier replacement.

Use R134a exclusively To remove

for R134a refrigerator the moisture

Use R12 exclusively from pipe.

for R12 refrigerator

Replace drier whenever

repairing refrigerator

cycle piping.

Leak check.

-Do not use soapy

water for check.

it may be sucked

into the pipe by.

Detect

-Check oil leak at refrigerant leak area.

refrigerant Use electronic leak detector if oil leak is

leak area.

not found.

-The electronic leak detector is very

sensitive to halogen gas in the air. It also

can detect R141b in urethane. Please

practice, therfore, many times before use.

NOTE) Please contact Songso company on +82-53-554-2067 if you have inquiry on heavy repair special facility.

- 72 -

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TROUBLE DIAGNOSIS

3-2. Summary Of Heavy Repair

Process

Contents

Tools

Trouble

diagnosis

Remove refrigerant

Residuals

- Cut charging pipe ends and discharge refrigerant from

drier and compressor.

Filter, side cutters

- Use R134a oil and refrigerant for compressor and drier Pipe Cutter, Gas welder, N²gas

- Confirm N²sealing and packing conditions before use.

Use good one for welding and assembly.

Parts

replacement

and welding

- Weld under nitrogen gas atmosphere.(N²gas pressure:

0.1-0.2kg/cm²).

- Repair in a clean and dry place.

- Evacuate for more than forty minutes after connecting

Vacuum pump(R134a

manifold gauge hose and vacuum pump to high (drier) exclusively), Manifold gauge.

and low (compressor refrigerant discharging parts)

pressure sides.

Vacuum

- Evacuation Speed:113l/min.

- Weigh and control the allowance of R134a bombe in a

R134a exclusive bombe(mass

Refrigerant

charging and

charging

vacuum conditions to be 5 g with electronic scales and cylinder), refrigerant(R134a)

charge through compressor inlet

(Charge while refrigerator operates).

- Weld carefully after inlet pinching.

manifold gauge, electronic

scales, punching off flier,

gas welding machine

inlet welding

- Check leak at weld joints.

Electronic Leak Detector,

Driver(Ruler).

Minute leak: Use electronic leak detector

Big leak: Check visually or fingers.

Note:Do not use soapy water for check.

- Check cooling capacity

Check

refrigerant leak

and cooling

capacity

➀ Check radiator manually to see if warm.

➁ Check hot line pipe manually to see if warm.

➂ Check frost formation on the whole surface of the

evaporator.

- Remove flux from the silver weld joints with soft brush

or wet rag.(Flux may be the cause of corrosion and

leaks.)

Copper brush, Rag, Tool box

Compressor

compartment

and tools

arrangement

- Clean R134a exclusive tools and store them in a clean

tool box or in their place.

- Installation should be conducted in accordance with the

standard installation procedure.(Leave space of more

than 5 cm from the wall for compressor compartment

cooling fan mounted model.)

Transportation

and

installation

- 73 -

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TROUBLE DIAGNOSIS

3-3. Precautions During Heavy Repair

Items

Precautions

1. Use of tools.

1) Use special parts and tools for R134a.

2. Removal of retained

refrigerant.

1) Remove retained refrigerant more than 5 minutes after turning off a refrigerator.

(If not, oil will leak inside.)

2) Remove retained refrigerant by cutting first high pressure side (drier part) with a nipper and

then cut low pressure side. (If the order is not observed, oil leak will happen.)

Evaporator

Compressor

Drier

Condenser

Low pressure side

High pressure side

3. Replacement of drier.

1) Be sure to replace drier with R134a only when repairing pipes and injecting refrigerant.

4. Nitrogen blowing

welding.

1) Weld under nitrogen atmosphere in order to prevent oxidation inside a pipe.

(Nitrogen pressure : 0.1~0.2 kg/cm².)

5. Others.

1) Nitrogen or refrigerant R134a only should be used when cleaning inside of cycle pipes

inside and sealing.

2) Check leakage with an electronic leakage tester.

3) Be sure to use a pipe cutter when cutting pipes.

4) Be careful not the water let intrude into the inside of the cycle.

- 74 -

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TROUBLE DIAGNOSIS

3-4. Practical Work For Heavy Repair

Items

Precautions

1. Removal of residual

Evaporator

Low pressure side

refrigerant.

KEYPOINTING

Observe the sequence for

removal of refrigerant.

(If not, compressor oil may

leak.)

Compressor

Suction

Drier

High pressure side

Release

Condenser

Refrigent

Intake

1) Remove residual refrigerant more than 5 minutes later after turning off the refrigerator.

( If not, compressor oil may leak inside.)

2) Remove retained refrigerant slowly by cutting first high pressure side (drier part) with a

nipper and then cut low pressure side.

2. Nitrogen blowing

welding.

Evaporator

KEYPOINTING

Welding without nitrogen

blowing produces oxidized

scales inside a pipe, which

affect on performance and

reliability of a product.

Drier

High pressure side

Condenser

Refrigent

Intake

When replacing a drier:

Weld ቢ and ባ parts by blowing nitrogen(0.1~0.2kg/cm²) to high pressure side after

assembling a drier.

When replacing a compressor:

Weld ቢ and ባ parts by blowing nitrogen to the low pressure side.

Note) For other parts, nitrogen blowing is not necessary because it does not produce oxidized

scales inside pipe because of its short welding time.

3. Replacement of drier.

* Unit : mm

KEYPOINTING

Be sure to check the

inserted length of capillary

tube when it is inserted. (If

too much inserted, a

12⁺^-0³

capillary tube is clogged by

a filter.)

Filter

Inserting a capillary tube

Measure distance with a ruler and put a mark(12^+3/-0)on the capillary tube. Insert tube to the

mark, and weld it

- 75 -

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TROUBLE DIAGNOSIS

Items

Precautions

4.Vacuum degassing.

Evaporator

Suction pipe

Compressor

Drier

Condenser

Low

pressure

High

pressure

Blue

Yellow

Red

Vaccum

Pump

KEYPOINTING

- If power is applied

during vacuum

degassing, vacuum

degassing shall be

more effective.

Pipe Connection

- Operate compressor

while charging

refrigerant. (It is

easier and more

certain to do like

this.)

Connect a red hose to the high pressure side and a blue hose to the

low pressure side.

Vacuum Sequence

Open ቢ, ባ valves and evacuate for 40 minutes. Close valve ቢ.

5.Refrigerant charging.

Charging sequence

1) Check the amount of refrigerant supplied to each model after completing vacuum

degassing.

2) Evacuate bombe with a vacuum pump.

3) Measure the amount of refrigerant charged.

- Measure the weight of an evacuated bombe with an electronic scale.

- Charge refrigerant into a bombe and measure the weight. Calculate the weight of

refrigerant charged into the bombe by subtracting the weight of an evacuated bombe.

KEYPOINTING

Indicate the weight of

an evacuated bombe

- Be sure to charge

the refrigerant at

around 25°C.

R134a

- Be sure to keep -5g

in the winer and

+5g in summer

Calculation of amount of refrigerant charged

the amount of refrigerant charged= a weight after charging -

a weight before charging (a weight of an evacuated cylinder)

- 76 -

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TROUBLE DIAGNOSIS

Items

Precautions

Evaporator

Compressor

Drier

Condenser

Bombe

4) Refrigerant Charging

Charge refrigerant while operating a compressor as shown above.

5) Pinch a charging pipe with a pinch-off plier after completion of charging.

6) Braze the end of a pinched charging pipe with copper brazer and take a gas leakage test

on the welded parts.

6. Gas-leakage test

* Take a leakage test on the welded or suspicious area with an electronic leakage tester.

7. Pipe arrangement

in each cycle

Check each pipe is placed in its original

place before closing a cover back-M/C

after completion of work. Particularly

control the size of Joint Drain Pipe

3-5. Standard Regulations For Heavy Repair

1) Observe the safety precautions for gas handling.

2) Use JIG (or wet towel) in order to prevent electric wires from burning during welding. (In order to prevent insulation

break and accident.)

3) The inner case shall be melted and insulation material (polyurethane) shall be burnt if not cared during welding inner

case parts.

4) The copper pipe shall be oxidized by overheating if not cared during welding.

5) Not allow the aluminum pipes to contact to copper pipes. (In order to prevent corrosion.)

6) Observe that the inserted length of a capillary tube into a drier should be 12 ⁺³

-0

mm.

Drier

Molecular Pipe

Molecular

Sieves

12⁺^-0³mm

7) Make sure that the inner diameter should not be distorted while cutting a capillary tube.

8) Be sure that a suction pipe and a filling tube should not be substituted each other during welding. ( High efficiency

pump.)

- 77 -

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TROUBLE DIAGNOSIS

3-6. Brazing Reference Drawings

1) Asia / Middle-East Africa

PIPE ASSEMBLY HOT LINE

(Refrigerator)

PIPE ASSEMBLY HOT LINE

(Freezer)

Copper(Silver)

Brazer

Copper Brazer

CAPI - TUBE DRIER ASSEMBLY

Copper(Silver)

Brazer

Silver Brazer

PIPE ASSEMBLY

SUCTION

PIPE ASSEMBLY

JOINT

Copper

Brazer

PIPE ASSEMBLY

CONDENSER

ASSEMBLY WIRE

JOINT

Copper Brazer

Coppper Brazer

Silver Brazer

PIPE ASSEMBLY HOT LINE

(Freezer)

2) Europe & CIS / America

Copper(Silver)

Brazer

Copper Brazer

CAPI - TUBE DRIER ASSEMBLY

Silver Brazer

PIPE ASSEMBLY

SUCTION

PIPE ASSEMBLY

JOINT

Copper

Brazer

PIPE ASSEMBLY

JOINT

CONDENSER

ASSEMBLY WIRE

Copper Brazer

Coppper Brazer

Silver Brazer

- 78 -

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TROUBLE DIAGNOSIS

4. HOW TO DEAL WITH CLAIMS

4-1. Sound

Problems

Checks and Measures

"Whizz" sounds

I Explain general principles of sounds.

• All refrigerator when functioning properly have normal operating sound. The

compressor and fan produce sounds.

There is a fan in the freezer compartment which blows cool air to freezer and

refrigerator compartments. "Whizz" sounds are heard when the air passes

through the narrow holes into the freezer and refrigerator compartments.

I Cooling Fan sound in the compressor compartment.

• There is a fan on the back of the refrigerator, which cools the compressor

compartment. If there is a small space between the refrigerator and the wall, the

air circulation sounds may be noticeable.

I Noise of Compressor.

• This operating sound happens when the compressor compresses the

refrigerant. The compressor rotates at 3600RPM. The sound of compressor

operation becomes louder as the refrigerator capacity increases.

"Click" sounds

I Explain the principles of temperature change.

• The sounds happens when pipes and internal evaporator in the refrigerator

compartment expand and contract as the temperature changes during the

refrigerator operation. This sound also happens during defrosting, twice a day,

when the ice on the evaporator melts.

"Clunk" sound

I Explain that it comes from the compressor when the refrigerator starts.

• When the refrigerator operates, the piston and motor in the compressor rotate

at 3600RPM. This sound is caused by the vibration of motor and piston when

they start and finish their operation. This phenomena can be compared with that

of cars. When the car engine ignites and starts to rotate, the loud sound

becomes gradually quiet. When the engine stops, it stops with vibration.

Vibration sound

I Check the sound whether it comes from the pipes vibration and friction.

• Insert rubber or leave a space between pipes to avoid the noise.

• Fix the fan blade if the noise is due to the collision of fan and shroud.

• Fix the drip tray if it is loosened.

I Sound depends on the installation location.

• Sound becomes louder if the refrigerator is installed on a wooden floor or near a

wooden wall. Move it to the another location.

• If the refrigerator is not leveled properly, a small vibration can make a loud

sound. Please adjust the level of the refrigerator.

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TROUBLE DIAGNOSIS

Problems

Checks and Measures

Sounds of water flowing

I Explain the flow of refrigerant.

• When the refrigerator stops, the water flowing sound happens.

This sound happens when the liquid or vapor refrigerant flows from the

evaporator to compressor.

"Click" sounds

I Explain the characteriistics of moving parts.

• This noise comes from the MICOM controller's switch on the top of the

refrigerator when it is turned on and off.

Noise of ice maker operation

(applicable to model with ice maker).

- Noise produced by ice dropping

and hitting ice bank.

I Explain the procedure and principles of ice maker operation.

• Automatic ice maker repeats the cycle of water supplying ➝ icemaking ➝ ice

ejection. When water is supplied, the water supply valve in the machine room

makes sounds like “Whizz” and water flowing also makes sound. When water

freezes to ice, freezing sounds such as “click, click” are heard. When ice is

being ejected, sounds like “Whizz” produced by a motor to rotate an ice tray

and ice dropping and hitting ice bank sounds are also heard.

- Noise from motor sounds “Whizz”.

Noise when supplying water.

I Explain the principles of water supplied to dispenser.

• When the water supply button in the dispenser is pressed, the water supply

valve in the compressor compartment opens and let the water flow to the water

tank in the lower part of the refrigerator compartment. The water is dispensed

by this pressure. When this happens, motor sound and water flowing sound are

heard.

Noise when supplying ice.

I Explain the principles of ice supply and procedure of crushed ice making in a

dispenser.

• When ice cube button is pressed, ice stored in the ice bank is moved by a Helix

Pusher and dispensed. If crushed ice button is pressed, the cube ice is

crushed. When this happens, ice crushing and hitting ice bank sounds are

heard.

- 80 -

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TROUBLE DIAGNOSIS

4-2. Measures for Symptoms on Temperature

Problems

Checks and Measures

Refrigeration is weak.

I Check temperature set in the temperature control knob.

• Refrigerator is generally delivered with the button set at “normal use” (MID).

But customer can adjust the temperature set depending on their habit and taste.

If you feel the refrigeration is weak, then set the temperature control button at

“strong” position. If you adjust the button in the freezer compartment as well,

the refrigeration is stronger than adjusting refrigerator only.

The food in the chilled drawer is .

not frozen but defrosted

I The chilled drawer does not freeze food.

• Use chilled drawer for storing fresh meat or fish for short periods. For storing for

a long periods or freezing food, use a freezer compartment. It is normal that

frozen foods thaw above the freezing temperature (in the chilled drawer).

Refrigerator water is not cool.

Ice cream softens.

I Check the water storage location.

• If water is kept in the door rack, please ask to keep it in the refrigerator

compartment shelf. It will then become cooler.

I Explain the characteristics of ice cream.

• The freezing point of ice cream is below -15°C. Therefore ice cream may melt if

it is stored in the door rack.

• Store ice cream in a cold place or set the temperature control button of a freezer

at “strong” position.

Refrigeration is too strong.

I Check the position of temperature control button.

• Check if refrigeration is strong in whole area of the refrigerator or partly near the

outlet of the cooling air. If it is strong in whole area, set the control button at

“weak”. If it is strong only near the outlet of cool air, keep food (particularly wet

and easy to frozen such as bean curd and vegetables) away from the outlet.

Vegetables are frozen.

I Check the vegetables storage.

• If vegetables are stored in the refrigerator shelf or chilled drawer instead of

vegetable drawer, they will be frozen. Set the control button at “weak” if they are

also frozen in the vegetable drawer.

The food stored at inside of

the shelf freezes even the

control button is set at “MID”.

I Check if food is stored near the outlet of the cooling air.

• The temperature at cooling air outlet is always below the freezing point.

Do not store food near the outlet of the cooling air as it block the air circulation.

And do not block the outlet. If the outlet of the cooling air is blocked, the

refrigerator compartment will not be cooled.

- 81 -

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TROUBLE DIAGNOSIS

4-3. Odor and Frost

Problems

Checks and Measures

Odor in the refrigerator compartment.

I Explain the basic principles of food odor.

• Each food has its own peculiar odor. Therefore it is impossible to prevent or

avoid food odor completely when food is stored in the completely sealed

refrigerator compartment. Deodorizer can absorb some portions of the odor but

not completely. The intensity of odor depends on refrigerator conditions and

environments.

I Check the temperature control button and set at “strong”.

• Clean inside of the refrigerator with detergent and remove moisture. Dry inside

the refrigerator by opening the door for about 3 or 4 hours and then set the

temperature control button at “strong”.

Frost in the freezer compartment

I Explain the basic principles of frost formation.

• The main causes for frosting:

- Door was left open.

- Air penetration through the gasket

- Too frequent door opening. (parties. etc.)

- Hot foods are stored before they are cooled down. The temperature of freezer

is -19°C. if temperature is set at “MID”. If hot air comes into the refrigerator,

fine frost forms as cold air mixes with hot air. If this happens quite often, much

frost forms inside of the refrigerator. If the door is left open in Summer, ice may

form inside of the refrigerator.

Frost in ice tray.

I Explain basic principles of frost formation.

• When ice tray with full of water is put into a freezer compartment, the water

evaporates. If cool air fan operates, the moisture attached to the jaw (protruded

part) of ice mold shall freeze and form frost. If warm water was put into the ice

mold, the situation will become worse.

- 82 -

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TROUBLE DIAGNOSIS

4-5. Others

Problems

Checks and Measures

The refrigerator case is hot.

I Explain the principles of radiator.

• The radiator pipes are installed in the refrigerator case and partition plate

between the refrigerator and the freezer compartment in order to prevent

condensation formation. Particularly in summer or after installation of

refrigerator, it may feel hot but it is normal. If there is no enough space to

dissipate heat, it can be hotter due to lack of heat radiation. Please install a

refrigerator in a well-ventilated place and leave a clearance between refrigerator

and wall:

Small holes in a door liner

Electric bills are too much.

I Explain that the hole is for releasing gas.

• A small hole in the door liner is for releasing gas during insulation materials

lining work. With a releasing hole, forming can be easily done .

I Check the use conditions.

• Too frequent door opening and hot food storing cause the compressor to

operate continuously and hence increase the electric consumption and bills.

Condensation on the inside

wall of the refrigerator

compartment and the cover of

properly vegetable drawer.

I Explain how to store foods

• Condensation forms when refrigerator is installed at damp area, door is

frequently opened, and wet foods are not stored in the air tight container or

wrapped. Be sure to store wet foods in the air tight container or in the wrap.

When is the power connected?

I When should the power be connected ?

• You can connect the power right after the installation. But if the refrigerator was

laid flat during transportation for a long period of time and the refrigerant and

compressor oils are mixed up, then this will affect badly the performance of a

refrigerator. Be sure to connect the power 2~3 hours after refrigerator is

installed.

Door does not open properly.

I Refrigerator compartment door does not open properly.

• When the door is open, warm open air comes into the compartment and is

mixed up with cool air. This mixed air shall be compressed and increase the

internal pressure when door is closed. This causes the door sticked closely to

the refrigerator in a moment. (If the refrigerator is used for a long time, it will

then open smoothly.)

The front side should

be raised a little bit higher

than the rear side.

I When the refrigerator compartment door is open and close, the freezer

compartment door moves up and down.

• When the refrigerator compartment door is open and close, fresh air comes into

the freezer compartment and moves up and down the freezer compartment

door.

I Door opens too easily.

• There is a magnet in the gasket rubber so that it is ok. if door is securely closed

without a gap. It can be open easily if the foods in the refrigerator or freezer

compartments hold the door open.

I A door does not close properly.

• If the rear side of the refrigerator is raised higher than front side, door shall not

be easily closed. Adjust the level of refrigerator with levelling screws.

- 83 -

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HOW TO DISASSEMBLE AND ASSEMBLE

(3) Disconnect upper hinge ቢ from a hinge supporter ባ

1. DOOR

by grasping the front part of upper hinge and lifting up

(Hinge Assembly, U) in arrow direction A and pull

forward in arrow B direction. Be careful as the door

may be fallen down.

1) Remove lower cover and then disconnect water

supply tube in the lower part of freezer door.

• Pull a water supply tube ባ forward while pressing ቢ part

to disconnect water supply tube as shown below.

2) Remove a freezer door.

(4) Lift up the freezer door ቢ in arrow direction and

(1) Loosen hinge cover screw of freezer door and remove

cover.

disconnect the door from the lower hinge ባ. Don’t pull

a door forward.

Disconnect all connecting lines except earthing cord.

Cover, Hinge

Connecting

Line

Earthing

Cord

(2) Turn hinge lever in arrow A direction until it is

loosened and take it out in arrow B direction.

Note : • Lift up a freezer door until a water supply tube is

fully taken out.

Lever, Hinge

(5) Assembly is the reverse order of disassembly

Note : • When disconnecting refrigerator door, turn hinge

lever counterclockwise.

• If hinge lever or bracket hinge pin is deformed

during assembling freezer and refrigerator doors,

fix two screws (Tap Tite Screw, M6: Hinge, L fixing

screw) in the hole of upper hinge.

- 84 -

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HOW TO DISASSEMBLE AND ASSEMBLE

2. HANDLE

3. SHROUD, GRILLE FAN

1) Put blade screwdriver into a groove on the side of a

Deco handle and lift up a little bit in arrow ቢ direction

and push up with hand in arrow ባ direction and

disconnect.

1) Loosen two screws after disconnecting a cap screw of a

grille fan(U) with a balde screwdriver.

2) Disassembly of a grille fan(U) : Pull forward after

opening hook at ➝ part with a blade screwdriver.

3) Disconnect housing A of a grille fan (L) from the main

body.

4) Disassembly of a grille fan (L) : Hold upper part of a

grille fan(L) and pull forward carefully.

5) Loosen two screws.

6) Disassembly of shroud. F(U) : Disconnect housing of B

after removing two rail guides with a blade screwdriver.

7) Disassembly of shroud. F(U) : Hold upper part and pull

forward.

Handle, Deco

8) Check foam PU sticking conditions around a shroud,

F(U) and F(L) during assembling. If damaged, torn or

badly sticked, assemble with a new one after sealing

well.

2) Put blade screwdriver into a groove on the side of a

DECO handle and lift up in arrow direction ቤ and push

down with hand in arrow direction ብ and disconnect.

3) Push up a piece handle ቤ in arrow direction with hand

and disconnect.

4) Turn screw in arrow direction with a cross driver and

disconnect.

Screw

Handle, Piece

- 85 -

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HOW TO DISASSEMBLE AND ASSEMBLE

4). Separate the Mechanical Cover and Valve Screw.

4. WATER VALVE DISASSEMBLY

METHOD

Mechanical Cover

1) Turn off the power of the refrigerator (pull out the plug).

Open the FREEZER and REFRIGERATOR Door and

disassemble the Lower Cover.

5) Separate the housing and pull out the valve.

Housing

2) Lay a dry towel on the floor and get ready to spill water

from the water tank.

Pull out the Clip. Then press the collet to separate the

tube from the connector and pour out the water until

emptied.

(Refer to the label attached on Front L on how to

separate the tube.)

5. FAN AND FAN MOTOR DISASSEMBLY

METHOD

1) Using a short screwdriver, loosen one SCREW in

DRAIN PIPE ASSEMBLY and one connected to the

MOTOR COVER.

DRAIN PIPE ASSEBLY

MOTOR COVER

→

2) Pull and separate the FAN ASSEMBLY and MOTOR

turning counterclockwise based on the MOTOR SHAFT.

FAN ASSEMBLY

MOTOR

3) Turn off the water. Then separate the water line from the

valve.

→

The assembly is in the reverse order of the disassembly

and take special care for the following details.

1. Be careful not to bend the tube during assembly.

2. Press the WATER DISPENSER button until water pours

out and check for leakage in the CONNECTOR TUBE (It

differs by the water pressure but usually takes about 2

minutes until water pours out.)

- 86 -

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HOW TO DISASSEMBLE AND ASSEMBLE

4) Loosen four screws with a phillips screwdriver and pull

6. DISPENSER

1) Disconnect funnel and button assembly by pulling down

the funnel assembly to disconnect.

and forward.

5) The duct cap assembly can be disconnected if the hold

lever connecting screw is loosened with a phillips driver.

2) Remove display frame assembly by making a gap

between a display frame assembly and door with a flat

blade screwdriver and pulling it forward. The cover

dispenser is attached with a hook.

6) To install the duct cap assembly, insert one end of the

spring into the right hole of the dispenser lever and

insert the other end into the right hole in the top part of

the dispenser. Then attach the holder at the solenoid

switch.

3) The display assembly can be connected by pressing the

top of the dispenser cover and pushing it after

separating the display frame from its housing.

- 87 -

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HOW TO DISASSEMBLE AND ASSEMBLE

7) Dispenser Related Parts

FRAME ASSEMBLY, DISPLAY

COVER, DISPENSER

DECO, FRAME DISPLAY

PWB(PCB) ASSEMBLY, DISPLAY

FUNNEL ASSEMBLY

MICRO SWITCH

FRAME, FUNNEL

10 LEVER(SWITCH)

11 FUNNEL

12 BUTTON LEVER

13 HOLLDER BUTTON

14 SOLENOID ASSEMBLY

15 SPRING

16 LEVER HOLDER

17 CAP ASSEMBLY, DUCT

18 CAP, DUCT

19 DISPENSER LEVER

20 FOAM, NEW

21 RUBBER, CAP

22 DECO, DRAIN

NOTE : Not every model includes every option

- 88 -

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#EV#

EXPLODED VIEW

FREEZER DOOR PART: GR-P227/L227/P257/L257

200A

612A

611B

201A

202A

606A

600A

610A

614A

205A

210B

203A

- 89 -

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#EV#

EXPLODED VIEW

Ref No. : GR-P227/GR-P257

REFRIGERATOR DOOR PART

* : Optional part

241A

241C

241B

230A

232A

231A

212G

243A

240A

264B

617A

264C

250A

205A

260A

264A

243A

240B

240C

240D

240E

233A

- 90 -

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#EV#

EXPLODED VIEW

Ref No. : GR-L227/GR-L257

REFRIGERATOR DOOR PART

* : Optional part

241A

230A

241C

241B

232A

231A

239A

205A

243A

240A

205E

205C

243A

240A

205B

240C

205D

205F

233A

240D

240E

- 91 -

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#EV#

EXPLODED VIEW

FREEZER COMPARTMENT

* : Optional part

270A

101B

271B

271A

137B

137A

136D

403A

136C

402A

136B

136A

135A

152A

120B

120C

128C

130A

302B

401A

128D

128E

400A

128F

120D

621A

623B

125A

621B

272A

103A

408A

125A

105B

135B

126A

312A

- 92 -

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#EV#

EXPLODED VIEW

REFRIGERATOR COMPARTMENT

* : Optional part

625A

101A

270B

271B

146A

140A

271C

626C*

626B*

626A*

115A

116A

140A

149E

115C

115B

142C

142B

402A

152A

142A

140A

151A*

142D

624C

151C

151B*

401A

177A

166B

166C

177B

162A

150A

166A

409B

165A

162B

272B

150B

165A

103A

504A

167B

167A

624A

624A*

167C

167D

120E

168A

- 93 -

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#EV#

EXPLODED VIEW

MACHINE COMPARTMENT

* : Optional part

406A

502A

410H*

410G

303A

500A

502B

303B

304A

303C

313A

316A*

300A

307A

310B

307A

317A

317B

301A

104A

306A

308B

309A

309C

305A

403B

309B

305B

310A

305C

308C

308A

305C

305B

- 94 -

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EXPLODED VIEW

ICE & WATER PART

* : Optional part

625A*

616F*

616G*

627A*

624B

600A*

607A

619A*

404A

602A

619A*

605A

620A 620B

604A

603B

603A

601A

404B

621B

- 98 -

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#EV#

EXPLODED VIEW

DISPENSER PART

* : Optional part

278A

278C

402C

278B

276A

275A

405A

276B

501A

280A

279B

278D

280B

280C

281A

279A

- 95 -

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P/No. 3828JD8999A

FEB., 2006 Printed in Korea

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