REFRIGERATOR SERVICE MANUAL

REFRIGERATOR SERVICE MANUAL
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REFRIGERATOR
SERVICE MANUAL
CAUTION
PLEASE READ CAREFULLY THE SAFETY PRECAUTIONS OF THIS BOOK
BEFORE CHECKING OR OPERATING THE REFRIGERATOR.
Ref No :
GC-P207
Ref No :
GC-L207
Ref No :
GC-C207
Ref No :
GC-B207
CONTENTS
WARNINGS AND PRECAUTIONS FOR SAFETY ................................................................................................................ 3
SPECIFICATIONS................................................................................................................................................................... 4
PARTS IDENTIFICATION ....................................................................................................................................................... 8
HOW TO INSTALL THE REFRIGERATOR .......................................................................................................................... 14
HOW TO ADJUST DOOR HEIGHT OF THE REFRIGERATOR ........................................................................................ 14
HOW TO INSTALL WATER PIPE........................................................................................................................................15
HOW TO CONTROL THE AMOUNT OF WATER SUPPLIED TO THE ICEMAKER ......................................................... 19
MICOM FUNCTION .............................................................................................................................................................. 21
EXPLATION FOR MICOM CIRCUIT..................................................................................................................................... 31
EXPLANATION FOR PWB CIRCUIT ................................................................................................................................. 31
COMPENSATION CIRCUIT FOR WEAK-COLD, OVER-COLD AT FREEZING ROOM.................................................... 60
PWB PARTS DRAWING AND LIST ................................................................................................................................... 61
PWB CIRCUIT DIAGRAM .................................................................................................................................................. 76
ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR ........................................................................... 86
WORKING PRINCIPLES.................................................................................................................................................... 86
FUNCTION OF ICE MAKER .............................................................................................................................................. 87
ICE MAKER TROUBLESHOOTING................................................................................................................................... 90
ICE MAKER CIRCUITS...................................................................................................................................................... 91
CIRCUIT ................................................................................................................................................................................ 93
TROUBLE DIAGNOSIS ........................................................................................................................................................ 95
TROUBLE SHOOTING ...................................................................................................................................................... 95
FAULTS ............................................................................................................................................................................ 105
COOLING CYCLE HEAVY REPAIR ................................................................................................................................. 122
HOW TO DEAL WITH CLAIMS ........................................................................................................................................ 126
HOW TO DISASSEMBLE AND ASSEMBLE ..................................................................................................................... 131
DOOR............................................................................................................................................................................... 131
HANDLE ........................................................................................................................................................................... 132
SHROUD, GRILLE FAN ................................................................................................................................................... 132
ICEMAKER....................................................................................................................................................................... 132
DISPENSER..................................................................................................................................................................... 133
HOME BAR ...................................................................................................................................................................... 135
EXPLODED VIEW .............................................................................................................................................................. 136
REPLACEMENT PARTS LIST ........................................................................................................................................... 145
-2-
WARNINGS AND PRECAUTIONS FOR SAFETY
8. Do not fray, damage, machine, heavily bend, pull out,
or twist the power cord.
Please observe the following safety precautions in order to
use safely and correctly the refrigerator and to prevent
accident and danger during repair.
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.
14. Do not put glass bottles with full of water into the
freezer. The contents shall freeze and break the glass
bottles.
6. Use standard electrical components when replacing
them.
7. Make sure the hook is correctly engaged.
Remove dust and foreign materials from the housing
and connecting parts.
15. When you scrap the refrigerator, please disconnect the
door gasket first and scrap it where children are not
accessible.
-3-
SPECIFICATIONS
1. Ref No. : GC-P207
ITEMS
SPECIFICATIONS
ITEMS
SPECIFICATIONS
DIMENSIONS (mm)
890(W)X725(D)X1750(H)
FIRST DEFROST
4 - 5 Hours
NET WEIGHT (kg)
121
DEFROST CYCLE
13 - 15 Hours
COOLING SYSTEM
Fan Cooling
DEFROSTING DEVICE
Heater, Sheath
TEMPERATURE CONTROL
Micom Control
ANTI SWEAT HEATER
Dispenser Duct Door Heater
DEFROSTING SYSTEM
Full Automatic
Dispenser Heater
Heater Defrost
Home Bar Heater
INSULATION
Cyclo-Pentane
ANTI-FREEZING HEATER
Damper Heater
COMPRESSOR
P.T.C. Starting Type
FREEZER LAMP
40W (1 EA)
EVAPORATOR
Fin Tube Type
REFRIGERATOR LAMP
40W (1 EA)
CONDENSER
Wire Condenser
DISPENSER LAMP
15W (1 EA)
REFRIGERANT
R600a (82g)
LUBRICATING OIL
MO 7 (350 cc)
DRIER
MOLECULAR SIEVE XH-9
CAPILLARY TUBE
ID 0.85
948
1750
1720
1750
600
666
711
725
1133.5
890
<Front View>
<Plane View>
-4-
SPECIFICATIONS
2. Ref No. : GC-L207
ITEMS
SPECIFICATIONS
ITEMS
SPECIFICATIONS
DIMENSIONS (mm)
890(W)X725(D)X1750(H)
CAPILLARY TUBE
ID 0.85
NET WEIGHT (kg)
120
FIRST DEFROST
4 - 5 Hours
COOLING SYSTEM
Fan Cooling
DEFROST CYCLE
13 - 15 Hours
TEMPERATURE CONTROL
Micom Control
DEFROSTING DEVICE
Heater, Sheath
DEFROSTING SYSTEM
Full Automatic
ANTI SWEAT HEATER
Dispenser Duct Door Heater
Heater Defrost
Dispenser Heater
INSULATION
Cyclo-Pentane
ANTI-FREEZING HEATER
Damper Heater
COMPRESSOR
P.T.C. Starting Type
FREEZER LAMP
40W (1 EA)
EVAPORATOR
Fin Tube Type
REFRIGERATOR LAMP
40W (1 EA)
CONDENSER
Wire Condenser
DISPENSER LAMP
15W (1 EA)
REFRIGERANT
R600a (82g)
LUBRICATING OIL
MO 7 (350 cc)
DRIER
MOLECULAR SIEVE XH-9
948
1750
1720
1750
600
666
711
725
1133.5
890
<Front View>
<Plane View>
-5-
SPECIFICATIONS
3. Ref No. : GC-C207
ITEMS
SPECIFICATIONS
ITEMS
SPECIFICATIONS
DIMENSIONS (mm)
890(W)X725(D)X1750(H)
FIRST DEFROST
4 - 5 Hours
NET WEIGHT (kg)
107
DEFROST CYCLE
13 - 15 Hours
COOLING SYSTEM
Fan Cooling
DEFROSTING DEVICE
Heater, Sheath
TEMPERATURE CONTROL
Micom Control
ANTI SWEAT HEATER
Home Bar Heater
DEFROSTING SYSTEM
Full Automatic
ANTI-FREEZING HEATER
Damper Heater
Heater Defrost
FREEZER LAMP
40W (1 EA)
INSULATION
Cyclo-Pentane
REFRIGERATOR LAMP
40W (1 EA)
COMPRESSOR
P.T.C. Starting Type
EVAPORATOR
Fin Tube Type
CONDENSER
Wire Condenser
REFRIGERANT
R600a (82g)
LUBRICATING OIL
MO 7 (350 cc)
DRIER
MOLECULAR SIEVE XH-9
CAPILLARY TUBE
ID 0.85
948
1750
1720
1750
600
666
711
725
1133.5
890
<Front View>
<Plane View>
-6-
SPECIFICATIONS
4. Ref No. : GC-B207
ITEMS
SPECIFICATIONS
ITEMS
SPECIFICATIONS
DIMENSIONS (mm)
890(W)X725(D)X1750(H)
CAPILLARY TUBE
ID 0.85
NET WEIGHT (kg)
106
FIRST DEFROST
4 - 5 Hours
COOLING SYSTEM
Fan Cooling
DEFROST CYCLE
13 - 15 Hours
TEMPERATURE CONTROL
Micom Control
DEFROSTING DEVICE
Heater, Sheath
DEFROSTING SYSTEM
Full Automatic
ANTI-FREEZING HEATER
Damper Heater
Heater Defrost
FREEZER LAMP
40W (1 EA)
INSULATION
Cyclo-Pentane
REFRIGERATOR LAMP
40W (1 EA)
COMPRESSOR
P.T.C. Starting Type
EVAPORATOR
Fin Tube Type
CONDENSER
Wire Condenser
REFRIGERANT
R600a (82g)
LUBRICATING OIL
MO 7 (350 cc)
DRIER
MOLECULAR SIEVE XH-9
948
1750
1720
1750
600
666
711
725
1133.5
890
<Front View>
<Plane View>
-7-
PARTS IDENTIFICATION
1. Ref No. : GC-P207(Internal Filter)
Cover Hinge
Cover PWB
Frame Display
Water Tube
Ice & Water
Dispenser Button
Dispenser Lamp
Home Bar
Freezer
compartment
Refrigerator
compartment
Milk product corner
Lamp
Shelf
Door rack
(1piece or 2piece)
*Wine holder
(Plastic or wire)
Shelf
Snack drawer (Optional)
Shelf(Folding or Normal)
Space plus
Door rack
Automatic
ice maker
Lamp
*Refreshment center
(Optional)
Egg box
Door rack
(1piece or 2piece)
Vegetable drawer
(1 or 2)
Shelf
(steel or glass)
Door rack
Shelf
Door rack
Drawer
Humidity switch
*Miracle Zone (Optional)
Fresh compartment
(Optional)
Door rack
Lower cover
* Optional
-8-
*Conversion switch
(Meats/Vegetables)
(Optional)
PARTS IDENTIFICATION
2. Ref No. : GC-P207(External Filter)
Cover Hinge
Cover PWB
Frame Display
Water Tube
Ice & Water
Dispenser Button
Dispenser Lamp
Home Bar
Freezer
compartment
Refrigerator
compartment
Milk product corner
Lamp
Shelf
Door rack
(1piece or 2piece)
*Wine holder
(Plastic or wire)
Shelf
Snack drawer (Optional)
Shelf(Folding or Normal)
Space plus
Door rack
Automatic
ice maker
Lamp
*Refreshment center
(Optional)
Egg box
Door rack
(1piece or 2piece)
Vegetable drawer
(1 or 2)
Shelf
(steel or glass)
Door rack
Shelf
Door rack
Drawer
Humidity switch
*Miracle Zone (Optional)
Fresh compartment
(Optional)
Door rack
Lower cover
* Optional
-9-
*Conversion switch
(Meats/Vegetables)
(Optional)
PARTS IDENTIFICATION
3. Ref No. : GC-L207(Internal Filter)
Cover Hinge
Cover PWB
Frame Display
Water Tube
Ice & Water
Dispenser Button
Dispenser Lamp
Freezer
compartment
Refrigerator
compartment
Milk product corner
Lamp
Shelf
Door rack
(1piece or 2piece)
*Wine holder
(Plastic or wire)
Shelf
Snack drawer (Optional)
Shelf(Folding or Normal)
Space plus
Door rack
Automatic
ice maker
Lamp
Shelf
(steel or glass)
Egg box
Door rack
(1piece or 2piece)
Vegetable drawer
(1 or 2)
Door rack
Shelf
Door rack
Drawer
Humidity switch
*Miracle Zone (Optional)
Fresh compartment
(Optional)
Door rack
Lower cover
* Optional
- 10 -
*Conversion switch
(Meats/Vegetables)
(Optional)
PARTS IDENTIFICATION
4. Ref No. : GC-L207(External Filter)
Cover Hinge
Cover PWB
Frame Display
Water Tube
Ice & Water
Dispenser Button
Dispenser Lamp
Freezer
compartment
Refrigerator
compartment
Milk product corner
Lamp
Shelf
Door rack
(1piece or 2piece)
*Wine holder
(Plastic or wire)
Shelf
Snack drawer (Optional)
Shelf(Folding or Normal)
Space plus
Door rack
Automatic
ice maker
Lamp
Shelf
(steel or glass)
Egg box
Door rack
(1piece or 2piece)
Vegetable drawer
(1 or 2)
Door rack
Shelf
Door rack
Drawer
Humidity switch
*Miracle Zone (Optional)
Fresh compartment
(Optional)
Door rack
Lower cover
* Optional
- 11 -
*Conversion switch
(Meats/Vegetables)
(Optional)
PARTS IDENTIFICATION
1. Ref No. : GC-C207
Cover Hinge
Cover PWB
Home Bar
Freezer
compartment
Refrigerator
compartment
Milk product corner
Lamp
Shelf
Door rack
(1piece or 2piece)
*Wine holder
(Plastic or wire)
Shelf
Snack drawer (Optional)
Shelf(Folding or Normal)
Door rack
Shelf-F
Cover, Lamp-F
Shelf-F
*Refreshment center
(Optional)
Egg box
Door rack
(1piece or 2piece)
Vegetable drawer
(1 or 2)
Door rack
Door rack
Drawer
Humidity switch
*Miracle Zone (Optional)
Fresh compartment
(Optional)
Door rack
Lower cover
* Optional
- 12 -
*Conversion switch
(Meats/Vegetables)
(Optional)
PARTS IDENTIFICATION
2. Ref No. : GC-B207
Cover Hinge
Freezer
compartment
Cover PWB
Refrigerator
compartment
Milk product corner
Lamp
Shelf
Door rack
(1piece or 2piece)
*Wine holder
(Plastic or wire)
Shelf
Snack drawer (Optional)
Shelf(Folding or Normal)
Door rack
Shelf-F
Cover, Lamp-F
Shelf-F
*Refreshment center
(Optional)
Egg box
Door rack
(1piece or 2piece)
Vegetable drawer
(1 or 2)
Door rack
Door rack
Drawer
Humidity switch
*Miracle Zone (Optional)
Fresh compartment
(Optional)
Door rack
Lower cover
* Optional
- 13 -
*Conversion switch
(Meats/Vegetables)
(Optional)
HOW TO INSTALL REFRIGERATOR
1. How to Adjust Door Height of Refrigerator
■ Make the refrigerator level first. (If the refrigerator is not installed on the flat floor, the height of freezer and refrigerator
door may not be the same.)
1. If the height of freezer door is lower than that of
refrigerator compartment :
2. If the height of freezer door is higher than that of
refrigerator compartment :
1
Adjusting
2
Driver
Adjusting
1
Driver 2
Insert a driver into the groove of adjusting screw
and rotate driver in arrow direction (clockwise) until the
refrigerator becomes horizontal.
Insert a driver into the groove of adjusting screw
and rotate driver in arrow direction (clockwise) until the
refrigerator becomes horizontal.
- 14 -
HOW TO INSTALL REFRIGERATOR
2. How to Install Water Pipe
2-1. When connecting directly to the water tap.
■ 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/cm2 for normal operation of water and ice
dispenser.
3. The total length of water pipe shall be less than 12m. Do
not bend the pipe at right angle. If the length is more
than 12m, there will be troubles on water supply due to
water pressure drop.
4. Please install water pipe where there is no heat around.
■ Please confirm the following installation parts.
Valve Feed
Rubber, Packing
Connector, Pipe
Class.
Shape and Spec.
Nomenclature
Remarks
5221JA3001A
Common Use
No Holes
Valve Feed
Water
Connector
Connector, (MECH) Pipe
Conversion Connector(3/4")
Balance Conector(3/4")
Packing(ø24x3t)
4932JA3003A
6631JA3004A
6631JA3004B
3920JA3001B
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
Connector, (MECH) Pipe
Conversion Connector(1/2")
Balance Conector(1/2")
Packing(ø19x3t)
4932JA3003D
6631JA3004G
6631JA3004H
3920JA3001D
- 15 -
Tape, Teflon
P/No
Convertible
Water
Valve
Connector, (MECH) Pipe
Connector, Pipe
No Holes
No Holes
No Holes
HOW TO INSTALL REFRIGERATOR
Caution : • Feed pipe should be connected to cold water
line. If it is connected to hot water line, trouble
may occur.
• Please check rubber packing when connecting
feed pipe.
1. Connection of Pipe Connector A and B.
1) Turn off main valve of water pipe.
2) Disconnect water tap from piping by loosening nuts.
3) Connect pipe connector A and B to piping after sealing
the pipe connector with sealing tapes.
4) Connect feed valve to pipe connector A.
5) If there is only one tap water pipe, connect pipe
connector A only and install feed pipe.
Single Lever Type Faucet
(general)
Pipe Connector B
Hot Water
General Type
Feed
Valve
Pipe Connector A
Feed
Valve
Feed
Valve
Cold Water
Two Hands Type Faucet
How to wind
Sealing Tapes.
Feed
Valve
Single Lever Type Faucet (one
hole, tech type and hand spray)
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
Water Tube
Nut
- 16 -
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.
■ 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
Nut
Inlet
Outlet
or
Water Tube
Connector Type
Nut Type
Hot Water
Cold Water
2. Filter Cleaning
1) Connect feed tube to the inlet of feed valve and filter.
2) Clean the main valve and feed valve with water for at
least one minute until clean water comes out.
Filter Inlet
Filter
Water
- 17 -
Feed Valve
HOW TO INSTALL REFRIGERATOR
■ Install Water Filter (Applicable to some models only)
■ Before Installing water filter
1. Before installing the filter, take out the top shelf of the
refrigerator after tilting it to the direction () and lifting it
to the direction () and move it to the lower part.
2. Remove the lamp cover by pressing the protrusion
under the cover and pulling the cover to the front.
Control box
Aligning with the guide line
and the fastening indication line
Control box
Aligning with the guide line
and the loosening indication line
■ Installing water filter
1. Initial installation of water filter
Remove the filter substitute cap by turning it
counterclockwise () by 90 degrees and pulling it down.
■ After installing water filter
Reassemble the lamp cover and the top shelf of the
refrigerator. To place the top shelf of the refrigerator, raise
the front part of the shelf a bit so that the hook of the shelf
is fit into the groove.
In order to clean the water filter system, drain water for
about 3 min.
Note : Keep it safe to use it later when you do not use the
filter.
Note : Then open the door of the refrigerator and check for
water droppings on the shelf under the filter.
Remove the red cap from the filter and attach the
sticker. Insert the upper part of the filter () after
aligning with the guideline marked on the control box,
and fasten it by turning it clockwise by 90 degrees.
Note : Check that the guideline and the fastening
indication line are aligned.
Substitute
cap
Separation
of red cap
Adhesion
sticker
2. Replacement of water filter
While holding the lower part of the filter, turn it
counterclockwise () by 90 degrees and pull it down.
Note : Check that the guideline and the loosening
indication line are aligned.
- 18 -
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.
1. Lift and pull out the space plus in the upper part of the freezer compartment.
2. Pull out the ice bank in the upper part of the freezer compartment.
Caution : • Do not put hands or tools into the chute to confirm
the operation of geared motor.
it may damage refrigerator or hurt hands.)
• Check the operation of motor with its operation
noise.
2
1
2. Apply electricity after connecting water pipe.
1) Press test switch under the icemaker for two seconds as shown below.
2) The bell rings(ding~dong) and ice tray rotates and water comes out from the icemaker water tube.
3) The water shall be supplied two or three times into the tray. The amount of water supplied for each time is small.
Put a water container under the ice tray and press test switch.
4) When ice tray rotates, the water in it will spill. Collect the spilt water and throw away into the sink.
5) When ice tray has finished rotation, water comes out from the water tube. Confirm the amounts of water in the ice tray.
(refer to fig. The optimum amount of water is 110cc)
Confirm the amount
of water
Ice maker
Test Switch
Too much
Optimum level
Too little
* It is acceptable if the adjusted level of water is a bit smaller than optimum level.
- 19 -
HOW TO INSTALL REFRIGERATOR
3-2. Control the amount of water supplied to the icemaker.
Caution : • Please unplug the power cord from the wall outlet and wait for more than three minutes before disconnecting
PWB cover as 310V is applied in the control panel.
(+) Driver
1. Disconnect PWB cover from the upper part of the refrigerator.
2. Adjust the amount of water supplied by using DIP switch.
■ Water Supplying Time Control Option
TYPE-3(Dot-LED)
TYPE-2(Bar-LED)
DIP SWITCH SETTING
S1
S2
WATER
SUPPLY TIME
1
OFF
OFF
2
ON
3
4
TYPE-1(88-LED)
DIP SWITCH SETTING
REMARKS
S1
S2
S3
WATER
SUPPLY TIME
6.5 SEC
OFF
OFF
OFF
6.5 SEC
OFF
5.5 SEC
ON
OFF
OFF
5.5 SEC
OFF
ON
7.5 SEC
OFF
ON
OFF
6 SEC
ON
ON
8.5 SEC
ON
ON
OFF
7 SEC
5
OFF
OFF
ON
7.5 SEC
6
ON
OFF
ON
8 SEC
7
OFF
ON
ON
9 SEC
8
ON
ON
ON
10 SEC
No
* The quantity of water
supplied depends on DIP
switch setting conditions
and water pressure as it
is a direct tap water
connection type. (the
water supplied is
generally 80 cc to 120 cc)
* DIP switch is on the main
PWB.
1) The water supplying time is set at five seconds when the refrigerator is delivered.
2) The amount of water supplied depends on the setting time and water pressure (city water pressure).
3) If ice cube is too small, increase the water supplying time. This happens when too small water is supplied into the ice tray.
4) If ice cube sticks together, decrease the water supplying time. This happens when too much water is supplied into the ice tray.
Caution : When adjusting the amount of water supplied, adjust step by step. Otherwise the water may spill over.
Switch ON
ON
Switch OFF
1
2
3
3. When adjustment of control switch for the amount of water supplied is complete, check the level of water in the ice tray.
Confirm the amount
of water
Optimum level
- 20 -
MICOM FUNCTION
1. Monitor Panel
1-1. GC-P207, GC-L207
Optional
Function display board
EXPRESS
FRZ
Type-1
(88-LED)
Description
FILTER STATUS DISPENSER
BUTTON
CUBE
WATER
ON
EXPRESS FRZ
CRUSH FRZ TEMP
DISPENSER
FREEZER
REF TEMP
REFRIGERATOR
EXPRESS FRZ
FILTER
CUBE
ON
CRUSH
FRZ TEMP
FREEZER
REFRIGERATOR
FILTER
LOCK
Lock button.
LOCK
Express freezer.
EXPRESS
FRZ
DISPENSER
Dispenser
selection button.
Filter reset button.
REF TEMP FILTER STATUS DISPENSER
BUTTON
WATER
Type-2
(Bar-LED)
EXPRESS FRZ
Temperature adjustment button
for freezer compartment.
DISPENSER
FREEZER
REFRIGERATOR
FILTER
LOCK
EXPRESS FRZ
EXPRESS FRZ
FRZ TEMP
REF TEMP
Temperature adjustment button
for refrigerator compartment.
FREEZER
REFRIGERATOR
DISPENSER
CUBE
Lock: Hold 3 Secs
WATER
Type-3
(Dot-LED)
CRUSH
EXPRESS FRZ
FREEZER
REFRIGERATOR
Express freezer.
Dispenser
selection button.
DISPENSER
Temperature adjustment button
for freezer compartment.
Lock: Hold 3 Secs
Temperature adjustment button
for refrigerator compartment.
1-2. GC-C207, B207
Optional
Function display board
Description
EXPRESS FRZ
EXPRESS FRZ
FRZ TEMP
REF TEMP
FREEZER
REFRIGERATOR
CHILD LOCK
Type-1
(88-LED)
Express freezer.
EXPRESS FRZ
FREEZER
REFRIGERATOR
Lock button.
LOCK
Temperature adjustment button
for freezer compartment.
EXPRESS FRZ
EXPRESS FRZ
FRZ TEMP
REF TEMP
FREEZER
Express freezer.
FREEZER
REFRIGERATOR
Temperature adjustment button
for refrigerator compartment.
REFRIGERATOR
LOCK
CHILD LOCK
Type-2
(Bar-LED)
EXPRESS FRZ
LOCK
Lock button.
LOCK
Temperature adjustment button
for freezer compartment.
- 21 -
Temperature adjustment button
for refrigerator compartment.
MICOM FUNCTION
1-3. Display Second Function
EXPRESS
FRZ
FILTER STATUS DISPENSER
BUTTON
CUBE
WATER
ON
CRUSH FRZ TEMP
EXPRESS FRZ
DISPENSER
FREEZER
REF TEMP
REFRIGERATOR
FILTER
LOCK
Lock button.
Express freezer.
Filter reset button.
Dispenser
selection button.
Temperature adjustment button
for freezer compartment.
Temperature adjustment button
for refrigerator compartment.
1. Buzzer sound mute Mode
The buzzer sound is set to OFF.
It activates by sounding the recognition sound of “Ding~” after pressing and holding “Express FRZ” button more than 5
seconds. It inactivates when resetting the mode power.
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 become ON and then OFF with the recognition
sound of “Ding~” after 5 seconds. (Be sure not to press only one button to work.)
Once the mode activates, the display is always OFF. Until door is opened or display button is pressed. When 30 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
This function is available when exhibiting a refrigerator in the shopping moll.
Function is inserted with recognition sound “Ding ~” if pressing both the “Express FRZ” button and the “REFRIGERATOR”
button at the same time for more than 5 seconds. If function is inserted, all basic refreezing functions at the R/F room and
the Storage room (COMP, F-FAN, C-FAN) turns off and the display normally operates. However, the dispenser function
normally operates.
The DEMO stops if pressing the button during DISPLAY DEMO, DEMO stops and the display normally operates but
performs DEMO operation again if not pressing the button again for more than 30 seconds (DEMO: Display scenario
when using the display).
Release method is same as input method.
The mode is released if power is reset.
- 22 -
MICOM FUNCTION
2. Description of Function
2-1. Funnction of Temperature Selection
Division
Type-1
(88-LED)
Power Initially On
-19 °C
3 °C
1st Press
-22°C
2 °C
2nd Press
-23 °C
0 °C
3th Press
-15 °C
6 °C
4th Press
-17 °C
4 °C
Type-2
Change (Bar-LED)
of
Indication
Lamp
Type-3
(Dot-LED)
Temperature
Control
Middle
Freezer
Control
-19 °C
(-18 °C)
<-19 °C>
-21 °C
(-21 °C)
<-21 °C>
-23 °C
(-22 °C)
<-22 °C>
-15 °C
-17 °C
<-16.5 °C>
<-18 °C>
Refrigeration
Control
3 °C
<2 °C>
1.5 °C
<1 °C>
0 °C
<0 °C>
6 °C
<4.5 °C>
4.5 °C
<3 °C>
Middle Strong
Strong
* The temperature can vary ±3 °C depending on the load condition.
Weak
Middle Weak
*( ) : 127V/60Hz, 110~115V/60Hz, 115V/60Hz Rating ONLY.
*< > : TAIBEI
1. When power is initially applied or reapplied after power cut, “Medium” is automatically selected.
2. When the temperature selection switch in the freezer and refrigerator compartments is pressed, the light is on in the
following sequence:
"Middle" ➝ "Middle Strong" ➝ "Strong" ➝ "Weak" ➝ "Middle Weak"
3. The temperature setting condition of freezer and refrigerator compartments shall not be indicate in the standard model
(GC-P207, GC-L207, GC-C207, GC-B207, ) when refrigerator or home bar door is closed.
- 23 -
MICOM FUNCTION
2-2. Automatic ice maker
• The automatic ice maker can automatically make 8 pieces of ice cube at a time, 80 pieces a day. But these quantities may
be varied according to various conditions including how many times the refrigerator door opens and closes.
• Ice making stops when the ice storage bin is full.
• If you don’t want to use automatic ice-maker, change the ice-maker switch to ON-OFF.
If you want to use automatic ice-maker again, change the switch to OFF-ON.
NOTE : It is normal that a noise is produced when ice made is dropped into the ice storage bin.
2-3. When ice maker does not operate smoothly
Ice is lumped together
• When ice is lumped together, take the ice lumps out of the ice storage bin, break them into small pieces, and then place
them into the ice storage bin again.
• When the ice maker produces too small or lumped together ice, the amount of water supplied to the ice maker need to
adjusted. Contact the service center.
✻ If ice is not used frequently, it may lump together.
Power failure
• Ice may drop into the freezer compartment. Take the ice storage bin out and discard all the ice then dry it and place it
back. After the machine is powered again, crushed ice will be automatically selected.
The unit is newly installed
• It takes about 12 hours for a newly installed refrigerator to make ice in the freezer compartment.
2-4. Express freezing
1. Express freezing is function to improve cooling speed of the freezing room by consecutively operating compressors and
freezing room fan.
2. Express freezing is released if power failure occurs and then returns to the original status.
3. Temperature setting is not changed even if selecting the express freezing.
4. The change of temperature setting at the freezing room or the cold storage room is allowed with express freezing
selected and prrocessed.
5. The cold storage room operates the status currently set with Express freezing selected and procesed.
6. If selecting the Express freezing, the Express freezing function is released after continuously operating compressor and
freezing room fan.
7. If frost removal starting time is arrived during Express freezing, Express freezing operation is done only for the remaining
time after completion of frost removal when the Express freezing operation time passes 90 minutes. If passing 90
minutes, Express freezing operation is done only for 2 hours after completion of frost removal.
8. If pressing Express freezing button during frost removal, the Express freezing LED is turned on but if pressing the
Express freezing, compressor operates after the remaining time has passed.
9. If selection Express freezing within 7 minutes (delay for 7 minutes of compressor) after the compressor stops,
compressor operates after the remaining time has passed.
10. The freezing room fan motor operates at the high speed of RPM during operation of Express freezing.
- 24 -
MICOM FUNCTION
2-5. Control of variable type of freezing room fan
1. To increase cooling speed and load response speed, MICOM variably controls freezing room fan motor at the high speed
of RPM and standard RPM.
2. MICOM only operates in the input of initial power or special freezing operation or load response operation for the high
speed of RPM and operates in the standard RPM in other general operation.
3. If opening doors of freezing / cold storage room or home bar while fan motor in the freezing room operates, the freezing
room fan motor normally operates (If being operated in the high speed of RPM, it converts operation to the standard
RPM). However, if opening doors of freezing room or home bar, the freezing room fan motor stops.
4. As for monitoring of BLDC fan motor error in the freezing room, MICOM immediately stops the fan motor by determining
that the BLDC fan motor is locked or poor if there would be position signal for more than 65 seconds at the BLDC motor.
Then it displays failure (refer to failure diagnosis function table) at the display part of refrigerator, performs re-operation in
the cycle of 30 minutes. If normal operation is performed, poor status is released and refrigerator returns to the initial
status (reset).
2-6. 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).
2-7. 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 Closing Opening Closing
or home bar
Opening
Closing
3 Times 3 Times 3 Times 3 Times
BUZZER
Within
a minute
A minute
30
30
30
seconds seconds seconds
2-8. Ringing of button selection buzzer
1. If pressing the front display button, “Ding ~ “ sound rings.
2-9. 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.
- 25 -
MICOM FUNCTION
2-10. Frost removal function
1. Frost removal is performed whenever total operation time of compressor becomes 7 ~ 7.5 hour.
2. In providing initial power (or returning power failure), frost removal starts whenever total operation time of compressor
becomes 4 ~ 4.5 hour.
3. Frost removal is completed if temperature of a frost removal sensor becomes more than 5°C after starting frost removal.
Poor frost removal is not displaced if it does not arrive at 5°C even if two hours have passed after starting frost removal.
4. No removal is done if frost removal sensor becomes poor (snapping or short-circuit).
2-11. Sequential operation of built-in product
Built-in products such as compressor, frost removal heater, freezing room fan, Cooling Fan and step motor damper are
sequentially operated as follows for preventing noise and part damage occurred due to simultaneous operation of a lot of
parts in applying initial power and completing test.
Function
Load Operation Sequence
Remark
In applying Initial power
When temperature
of a frost removal
sensor becomes
more than 45°C
(In purchase,
movement)
POWER sec.
When
temperature of a
frost removal
sensor becomes
less than 45°C
(In power failure,
service)
HOME
HOME
0.5
8
5
FROST
FROST 0.3
BAR/ sec. BAR/
POWER sec.
sec.
sec.
REMOVAL
REMOVAL
PIPE
PIPE
HEATER
HEATER
HEATER
ON
HEATER
ON
OFF
ON
OFF
0.5
ON
5.6
sec.
Test mode 1
(Compulsory
function)
TEST MODE
Test mode 2
(Compulsory frost
removal)
COMP
0.3
sec.
ON
WATER
SUPPLY
&
DISPENSE
HEATER
ON
TEST
S/W
(Press
Once)
TEST
S/W
(Press
2 times)
5
sec.
F-FAN
&
C-FAN
ON
0.3
0.3
STEP
sec. MOTOR sec.
DAMPER
ON
COMP
0.3
sec.
ON
0.3
OTHER sec.
LOAD
OFF
COMP
OFF
COMP
ON
0.3
sec.
F-FAN
&
C-FAN
OFF
- 26 -
0.3
sec.
F-FAN
&
C-FAN
ON
HOME
BAR
HEATER
ON
F-FAN
&
C-FAN
ON
0.3
STEP
sec. MOTOR
DAMPER
OPEN
0.3
FROST 0.3
STEP
sec. REMOVAL sec. MOTOR
HEATER
ON
If error occurs
during operation,
initial operation is
not done.
DAMPER
CLOSE
If pressing switch
once more in the
test mode 2 or
temperature of a
frost removal
sensor is more
than 5°C, it
immediately
returns to the test
mode for initial
operation
(COMP operates
after 7 minutes).
MICOM FUNCTION
2-12. Function of Trouble Diagnosis(88-LED)
1. Failure diagnosis function is function to facilitate service when nonconforming matters affecting performance of product
during use of product.
2. In occurrence of failure, pressing the function adjustment button does not perform function and only alarm sound (“Ding~”) rings.
3. If nonconforming matters occurred are released during display of failure code, MICOM returns to the original state (Reset).
4. Failure code is displayed on the display part of setting temperature for the freezing room and the display part of setting
temperature for the cold storage room of LED, which are placed at the display part of a refrigerator. All the LED graphics
other than a failure code are turned off.
Failure Code Display Part
EXPRESS
FRZ
Failure Code Display Part
FILTER STATUS DISPENSER
BUTTON
CUBE
EXPRESS FRZ
FRZ TEMP
CHILD LOCK
REF TEMP
WATER
ON
CRUSH FRZ TEMP
EXPRESS FRZ
C
DISPENSER
E
F
FREEZER
REF TEMP
REFRIGERATOR
A
FILTER
B
EXPRESS FRZ
LOCK
D
C
FREEZER
A
REFRIGERATOR
B
LOCK
D
● : Normal Operation
Product operation status in failure
Failure code display part
No.
1
Item
Setting
Setting
Contents of failure
temperature temperature for
for freezing cold storage
Er
FS
Snapping or short-circuit of
Failure of freezer
freezer sensor
sensor
Compressor
Freezer
Fan
ON for 15minutes Standard
OFF for 15minutes
RPM
M/C room
Fan
Defrost
Heater
Stepping
motor damper
●
●
●
Snapping or short-circuit of
refrigerator sensor 1
●
Standard
RPM
●
●
Open for 10munutes,
closing for 15 minutes
Snapping or short-circuit of
refrigerator sensor 2
●
Standard
RPM
●
●
●
dS
Snapping or short-circuit of frost
removal sensor
●
Standard
RPM
●
No frost
removal
●
Er
dH
Snapping of frost removal heater
or temperature fuse, pull-out of
connector (indicated minimum 4
hours after failure occurs)
●
Standard
RPM
●
●
●
Failure of BLDC FAN
at freezing room
Er
FF
●
OFF
●
●
●
7
Failure of BLDC FAN
at machine room
Er
CF
Poor motor, hooking of wires to
fan. Contact of structures to Fan.
Snapping or short-circuit of L/wire
(if there is no fan motor signal for
more than 115 seconds in
operation of fan motor
●
Standard
RPM
OFF
●
●
8
Failure of
Communication
Er
CO
Connection between main PCB
and display PCB. Snapping or
short-circuit of L/wire.
Transmission between main PCB
and display PCB. Poor TR and
receiving part.
●
Standard
RPM
●
●
●
9
Failure of
Outside Sensor
Setting temperature
display (Note 1)
Snapping or short-circuit of outside
temperature perceiving sensor
●
●
●
●
●
10
Failure of ice
removal sensor
Setting temperature
display (Note 2)
Snapping or short-circuit of icemaking sensor
●
●
●
●
●
11
Failure of ice
maker unit
Setting temperature
display (Note 2)
Poor motor or Hall IC within ice-maker
unit. Snapping or short-circuit of
L/Wire. Poor main PCB drive circuit.
●
●
●
●
●
Er
2
Failure of refrigerator
sensor 1
3
Failure of refrigerator
sensor 2
4
Failure of frost
removal sensor
Er
5
Poor of frost
removal
6
rS
Setting temperature
display (Note 2)
✽ In display of the failure mode, all LEDs of setting temperature for freezing/ setting temperature for cold storage are turned
off (excluding Note1 and Note2).
- 27 -
MICOM FUNCTION
2-13. Function of Trouble Diagnosis(Bar-LED, Dot-LED)
1. Function of trouble diagnosis is to make the repair service easy when the refrigerator is out of order during service.
2. The function control button does not work but the recognition sound is heard when the refrigerator is out of order.
3. It returns to normal conditions when trouble code led is off. (reset)
4. Trouble code is indicated by the freezing temperature indicator led in the refrigerator display. All leds except trouble code
are off.
Trouble Code
EXPRESS
FRZ
CUBE
Trouble Code
FRZ TEMP
REF TEMP FILTER STATUS DISPENSER
BUTTON
Trouble Code
Index
WATER
ON
CRUSH
EXPRESS FRZ
F4
F3
FRZ TEMP
Trouble Code
CUBE
REF TEMP
EXPRESS FRZ
DISPENSER
FREEZER
REFRIGERATOR
FILTER
F2
F1
E
F
G
LOCK
D
FREEZER
REFRIGERATOR
CHILD LOCK
CRUSH
EXPRESS FRZ
FREEZER
REFRIGERATOR
FRZ
TEMP
C
REF TEMP
WATER
EXPRESS FRZ
EXPRESS FRZ
FRZ TEMP
LOCK
DISPENSER
Lock: Hold 3 Secs
C
- 28 -
G
E
F
C
G
D
MICOM FUNCTION
Note1) In error of outside sensor, setting temperature for freezing/ cold storage is normally displayed and indicated “Er” on
the outside temperature display part (normally displayed except for the outside temperature display part).
Note2) Nonconforming contents of poor R2 sensor, ice-making sensor and ice-making kit are displayed in LED check, not
indicated on the failure display part (when pressing freezing temperature adjustment button and special freezing
button for a second or more).
2-14. 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 but only warning sounds ring.
4. In finishing test mode, always pull the power cord out and then plug-in it again for the normal state.
5. If nonconforming contents such as sensor failure are found during performance of test mode, release the test mode and
display the failure code.
6. Even if pressing the test button during failure code display, test mode will not be performed.
Mode
Manipulation
Content
Test 1
Press test button once
(freezing force mode)
1. Continuous operation of compressor
2. Continuous operation of freezing room fan
(high speed RPM) and M/C room fan
3. Frost removal heater OFF
4. Full opening status (baffle opened) status of
electronic step motor damper
5. All display LED graphics - ON.
Test 2
Press test button once at
the test mode 1 status
(compulsory frost removal
mode)
1. Compressor OFF
2. Freezing room fan and M/C room fan is
turned off.
3. Frost removal heater ON
4. Full closing status (baffle closed) status of
electronic step motor damper
5. All display LED graphics - OFF
(88LED: Except for (A)22 (B)22 LEDs
Bar, Dot LED: Except for only middle Notch
Bar Graphics)
Normal
Status
Press test button once at
the test mode 2 status
(freezing force mode)
Return to the initial status.
- 29 -
Remarks
Freezing room fan is
turned off in door open.
Compressor is operated
after 7 minutes.
MICOM FUNCTION
* LED check function- When freezer and refrigerator temperature control buttons are pressed for more than 1 second at the
same time, all LEDS on the display are on. And it returns to the normal conditions when the buttons are released.
* Check of freezer fan rpm variation- Freezer fan speed changes from high speed to standard speed and vice versa for 30
seconds whenever freezer and refrigerator temperature control buttons are pressed at the same time for more than 1
second when freezer fan is in operation and returns to the previous rpm.
2-15. Functions of Ice Dispenser and Water Dispenser
1. Ice and cold water are available without opening refrigerator door.
2. The desired ice (crushed or cube) or cold water are dispensed when dispenser press button (rubber button) is pressed
after selection of ice or cold water. When ice is selected, duct door opens by electric solenoid when dispenser press
switch is pressed. When dispenser press switch is released, duct door closes after it opens for 5 seconds.
3. Ice and water dispensing function stops when freezer door is open.
4. Geared motor and solenoid are automatically off if there is no signal after 3 minutes when ice (crushed and cube) or
water is selected and dispenser switch is pressed down. Solenoid (duct door) stops after 5 seconds when solenoid is off.
(in order to protect short circuit from solenoid heat generation)
5. Dispenser Lamp On/Off Function. The dispenser lamp shall be on or off whenever dispenser button is pressed or
released, respectively after selection of ice (crushed or cube) or water.
6. Water/Crushed Ice/Cube Ice Selection function
1) It is to select water/crushed ice/cube ice by user from the function control part and it will be indicated and selected by
pressing button.
2) Crushed ice is automatically selected when power is initially on.
3) When crushed ice is selected and its button is pressed, geared motor operates and crushed ice is dispensed.
4) When cube ice is selected and its button is pressed, geared motor and ice solenoid operate and cube ice is dispensed.
7. Function of Water Dispenser
1) When user selects water in the function control parts, it is indicated in the LED and water is selected.
2) Water dispenser is a direct tap water connection type. The water solenoid valve on the right of machine room opens
and water dispenses when user selects water and presses button.
- 30 -
EXPLATION FOR MICOM CIRCUIT
1. Explanation for PWB circuit
1-1. Power circuit
Power circuit consists of SMPS (SWITCHING MODE POWER SUPPLY) power. The SMPS consist of the rectifying part
(BD1, CE1) converting AC voltage to DC voltage, the switching part (IC2) switching the converted DC voltage, transformer
transferring energy of the primary side of the switching terminal to the secondary side and the feedback part (IC3, IC4)
transferring it to the primary side.
Caution : Since high voltage (DC310V) is maintained at the power terminal, please take a measure after more than 3
minutes have passed after removing power cords in the abnormal operation of a circuit.
Voltage of every part is as follows:
Part
Voltage
VA1
220 Vac
CE1
inspection Vdc
CE2
13~16 Vdc
<GC-B/C207: 88-LED>
<GC-B/C207: Bar, Dot-LED>
- 31 -
CE3
12 Vdc
CE4
15.5 Vdc
CE5
5 Vdc
EXPLATION FOR MICOM CIRCUIT
<GC-P/L207: 88-LED>
<GC-P/L207: Bar-LED>
<GC-P/L207: Dot-LED>
- 32 -
EXPLATION FOR MICOM CIRCUIT
1-2. Oscillation circuit
Oscillation circuit is a circuit with the purpose of generating basic time for clock occurrence for synchronization and time
calculation in relation with information transmission/reception of inside elements of IC1 (MICOM). The OSC1 must always
use rated parts since if SPEC is changed, time calculated at the IC1 may be changed or no operation is done.
<GC-B/C207: 88-LED>
<GC-P/L207: 88-LED>
<GC-B/C207: Bar, Dot-LED>
<GC-P/L207: Bar-LED>
<GC-P/L207: Dot-LED>
1-3. Reset circuit
The reset circuit is circuit allowing various parts such as RAM inside of MICOM (IC1) to initialize and the whole of function to
start from the initial status, when initial power is input or when power is applied again to MICOM by a spontaneous power
failure. ‘LOW’ voltage is applied to the reset terminal of MICOM in the beginning of power supply for a constant time (10ms).
Reset terminal during general operation is 5V (No MICOM operates in failure of RESET IC).
<GC-B/C207: 88-LED>
<GC-P/L207: 88-LED>
<GC-B/C207: Bar, Dot-LED>
<GC-P/L207: Bar-LED>
- 33 -
<GC-P/L207: Dot-LED>
EXPLATION FOR MICOM CIRCUIT
1-4. Load/dispenser operation, buzzer driving, door opening circuit
1. LOAD DRIVING CIRCUIT
✽ InEven if opening the door of freezing room or cold storage room during operation of fan motor at the freezing room, this
circuit does not stop and operates at the standard RPM. In addition, if doors of freezing room or cold storage room, the
fan motor normally operates at the RPM previously operated.
✽ (A), (B), (C) and (D) of door switch for the freezing room or cold storage room are connected to the door open sensing
circuit in parallel toward both ends of switch to determine door open at MICOM.
✽ Since a door switch of the home bar is connected to door switch (C), (D) of the cold storage room, it senses door opening
if even one of both is opened.
✽ The fan motor is immediately stop if opening doors of the freezing room or cold storage room at the TEST mode and it
immediately operates if closing them.
Type of Load
COMP
Frost Removal
Heater
AC Converting
Relay
R-room LAMP
Measuring part (IC6)
No.16
No.13
No.12
No.15
Status
ON
Within 1 V
OFF
12 V
<GC-P/L207: 88-LED>
ASSEMBLY
- 34 -
EXPLATION FOR MICOM CIRCUIT
<GC-P/L207: Bar-LED>
ASSEMBLY
<GC-P/L207: Dot-LED>
ASSEMBLY
- 35 -
EXPLATION FOR MICOM CIRCUIT
2) GC-B207, GC-C207
✽ The fan motor at the freezing room does not stop but operates if opening doors of the freezing room or cold storage room
or the home bar during operation of the fan motor at the freezing room.
✽ (A), (B), (C) and (D) of door switch for the freezing room or cold storage room are connected to the door open sensing
circuit toward both ends of switch to determine door open at MICOM.
✽ Since a door switch of the home bar is connected to door switch (C), (D) of the cold storage room, it senses door opening
if even one of both is opened.
Type of Load
COMP
Frost Removal
Heater
AC Converting
Relay
R-room LAMP
Homebar
Heater
Measuring part (IC6)
No.16
No.11
No.10
No.15
No.14
Status
ON
Within 1 V
OFF
12 V
<GC-B/C207: 88-LED>
P.T.C
ASSEMBLY 'COMP'
- 36 -
EXPLATION FOR MICOM CIRCUIT
Type of Load
COMP
Frost Removal
Heater
AC Converting
Relay
R-room LAMP
Homebar
Heater
Measuring part (IC6)
No.16
No.11
No.12
No.15
No.14
Status
ON
Within 1 V
OFF
12 V
<GC-B/C207: Bar, Dot-LED>
ASSEMBLY
- 37 -
EXPLATION FOR MICOM CIRCUIT
2. Dispenser operation circuit
<GC-P/L207: 88-LED>
<GC-P/L207: Bar-LED>
- 38 -
EXPLATION FOR MICOM CIRCUIT
<GC-P/L207: Dot-LED>
1) Check load driving status
Type of Load
Measuring part
Status
GEARED
MOTOR
SOLENOID
CUBE
IC6-No.11
IC6-No.10
WATER VALVE
ICE
WATER
IC7-No.16
IC7-No.15
ON
Within 1 V
OFF
12 V
SOLENOID
DISPENSER
HOME BAR
HEATER
SOLENOID
PILOT
IC7-No.13
IC7-No.12
IC7-No.14
2) Lever S/W sensing circuit
Measuring part
IC1(Micom) No.15 (16)
Lever S/W
On(Press)
5V
(60 Hz)
0V
OFF
5V
- 39 -
EXPLATION FOR MICOM CIRCUIT
3. Door opening sensing circuit
<GC-B/C207: 88-LED>
<GC-B/C207: Bar, Dot-LED>
<GC-P/L207: 88-LED>
<GC-P/L207: Bar-LED>
<GC-P/L207: Dot-LED>
- 40 -
EXPLATION FOR MICOM CIRCUIT
CONDITIONS
Bell sounds when button on
dosplay is pressed.
MEASURING
POINTS
0.05 s
IC1 (No. 48 Pin)
IC1 (No. 51 Pin)
0.2 s
0.1 s
Beep sounds when warning
door opening.
0.4 s
0.5 s
5V
5V
0V
0V
5V
5V
0V
2.63 kz (DING)
2.21 kz (DONG)
0V
OFF
0.5 s
5V
2.63 kz (BEEP)
OFF
0V
Measuring part
IC1 (MICOM) No. 47, 46 Pin
Door of Freezing/Cold Storage Room
Closing
5 V ( A - B , C - D . S/W at both ends are at Off status)
Opening
5 V ( A - B , C - D . S/W at both ends are at On status)
✽ Since door switch sensing switch (A), (B) are a separate switch even if the door switch of the freezing room normally
operates, they may fail to sense door opening in the failure of switch at both ends of (A) and (B) or in failure of the L/wire.
✽ Lamp does at the cold storage room not turn on if the door switch of the cold storage room fails to sense the door open
switch (c ), (d) or the home bar switch.
- 41 -
EXPLATION FOR MICOM CIRCUIT
1-5. Temperature sensing circuit
<GC-P/L207: 88-LED>
F
A
B
C
D
E
<GC-P/L207: Bar-LED>
F
A
B
C
D
- 42 -
EXPLATION FOR MICOM CIRCUIT
<GC-P/L207: Dot-LED>
F
A
B
C
D
The above circuits are circuits attached to freezing room sensor or cold storage room sensor for adjusting setting
temperature at the freezing room and cold storage room, ice-making sensor for sensing water temperature in ice-making, or
an evaporator for sensing temperature of a frost removal sensor necessary for frost removal. Short or open status of every
temperature sensor is as follows:
SENSOR
CHECK POINT
Freezing sensor
POINT A Voltage
Frost removal sensor
POINT B Voltage
Cold storage sensor 1
POINT C Voltage
Cold storage sensor 2
POINT D Voltage
Ice making sensor
POINT E Voltage
Room temperature sensor
POINT F Voltage
- 43 -
NORMAL(-30 °C ~ 50 °C)
IN SHORT
IN OPEN
0.5 V~4.5 V
0V
5V
EXPLATION FOR MICOM CIRCUIT
<GC-B/C207: 88-LED>
E
A
B
C
D
- 44 -
EXPLATION FOR MICOM CIRCUIT
<GC-B/C207: Bar, Dot-LED>
E
A
B
C
D
The above circuits are circuits attached to freezing room sensor or cold storage room sensor for adjusting setting
temperature at the freezing room and cold storage room, ice-making sensor for sensing water temperature in ice-making, or
an evaporator for sensing temperature of a frost removal sensor necessary for frost removal. Short or open status of every
temperature sensor is as follows:
SENSOR
CHECK POINT
Freezing sensor
POINT A Voltage
Frost removal sensor
POINT B Voltage
Cold storage sensor 1
POINT C Voltage
Cold storage sensor 2
POINT D Voltage
Room temperature sensor
POINT E Voltage
- 45 -
NORMAL(-30 °C ~ 50 °C)
IN SHORT
IN OPEN
0.5 V~4.5 V
0V
5V
EXPLATION FOR MICOM CIRCUIT
1-6. Switch entry circuit
The following circuits are entry circuits for sensing signal form test S/W, electronic single motor damper reed S/W for
examining refrigerator.
<GC-B/C207: 88-LED>
<GC-B/C207: Bar, Dot-LED>
<GC-P/L207: Bar-LED>
<GC-P/L207: 88-LED>
<GC-P/L207: Dot-LED>
1-7. Option designation circuit (model separation function)
<GC-B/C207: 88-LED>
<GC-B/C207: Bar, Dot-LED>
<GC-P/L207: 88-LED>
<GC-P/L207: Dot-LED>
The above circuits are used for designating separation by model as option and notifying it to MICOM. Designation of option
by model and the application standards are as follows:
u These circuits are accurately pre-adjusted in shipment from factory and so you must not additionally add or remove
option.
Separation
Connection Status
Application Standard
Connection
Export model
OUT
Domestic model
OP1
- 46 -
EXPLATION FOR MICOM CIRCUIT
1-8. Stepping motor operation circuit
<GC-B/C207: 88-LED>
<GC-B/C207: Bar, Dot-LED>
<GC-P/L207: 88-LED>
<GC-P/L207: Bar-LED>
<GC-P/L207: Dot-LED>
- 47 -
EXPLATION FOR MICOM CIRCUIT
For motor driving method, rotation magnetism is formed at coils wound on each phase of motor and stator and so motor
becomes to rotate if applying “High” signal to the IC8 (TA777AF) at the MICOM PIN 33 and outputting “High”, “Low” signal
by step numbers fixed through MICOM PIN 34 and 35,.
Explanation) For driving method of the stepping motor, send signals in the cycle of 3.33 mSEC using terminal of MICOM
PIN 33, 34 and 35 as shown in wave form of the following part.
These signals are output to the output terminal (No.10, 11, 14, 15) via the input terminal (No. 3, 6, 8) of the
IC10 (TA7774F) as IC for motor driving. Output signals allow motor coils wound on each phase of stator to
form rotation magnetic field and the motor to rotate. Inputting as below figure to the input terminal (INA, INB)
as IC (TA7774AF) for motor driving allows motor coils wound on each phase of stator to form rotation
magnetic field and the stepping motor damper to rotate
CCW (Reverse rotation)
(Positive rotation) CW
INA
INB
A
B
A
B
- 48 -
EXPLATION FOR MICOM CIRCUIT
1-9. Fan motor driving circuit (freezing room, M/C room)
1. This circuit performs function to make standby power ‘0’ by cutting off power supplied to ICs inside of the fan motor in the
fan motor OFF.
2. This is a circuit to perform a temporary change of speed for the fan motor and applies DC voltage up to 7.5V ~ 16V to
motor.
3. This circuit performs function not to drive the fan motor further by cutting off power applied to the fan motor in the lock of
fan motor by sensing the operation RPM of the fan motor.
a , d part
b part
e part
Motor OFF
5V
2V or less
2V or less
Motor ON
2 ~ 3V
12 ~ 14V
8 ~ 16V
<GC-P/L207: 88-LED>
b
a
e
d
- 49 -
EXPLATION FOR MICOM CIRCUIT
<GC-P/L207: Bar-LED>
b
a
e
d
<GC-P/L207: Dot-LED>
b
a
e
d
- 50 -
EXPLATION FOR MICOM CIRCUIT
<GC-B/C207: 88-LED>
b
a
e
d
<GC-B/C207: Bar, Dot-LED>
b
a
e
d
- 51 -
EXPLATION FOR MICOM CIRCUIT
1-10. Temperature compensation and over-cool/weak-cool compensation circuit
1. Temperature compensation at freezing room, cold storage room
<GC-P/L207: 88-LED>
<GC-P/L207: Bar-LED>
<GC-P/L207: Dot-LED>
<GC-B/C207: 88-LED>
<GC-B/C207: Bar, Dot-LED>
- 52 -
EXPLATION FOR MICOM CIRCUIT
: JUMP WIRE
Freezing room
Resistance value
(R)J1
(R)J2
Cold storage room
Temperature
compensation
Resistance value
(RCR1)
Temperature
compensation
Remarks
6.2 kΩ
+5 °C
180 kΩ
+2.5 °C
Warmly
5.1 kΩ
+4 °C
56 kΩ
+2.0 °C
compensate
3 kΩ
+3 °C
33 kΩ
+1.5 °C
2.4 kΩ
+2 °C
18 kΩ
+1.0 °C
1.2 kΩ
+1 °C
12 kΩ
+0.5 °C
0 °C
10 kΩ
0 °C
1 kΩ
-1 °C
8.2 kΩ
-0.5 °C
1.8 kΩ
-2 °C
5.6 kΩ
-1.0 °C
2.7 kΩ
-3 °C
3.3 kΩ
-1.5 °C
3.9 kΩ
-4 °C
2 kΩ
-2.0 °C
Coolly
5.1 kΩ
-5 °C
470 Ω
-2.5 °C
compensate
Reference temperature
u Temperature compensation table by adjustment value (difference value against current temperature)
Ex) If changing compensation resistance at a cold storage room (RCR1) from 10 kΩ (current resistance) to 18 kΩ
(modified resistance), temperature at the cold storage will increase by +1°C.
Ex) Now (R)J1=
, (R)J2=1.2kΩ, RCRI=5.6kΩ
want to compensate -2°C for Freezing room temperature and
+2°C for Cold storage room temperature
(R)J1 = 12kΩ
(R)J2 = 12kΩ
RCRI = 5.6kΩ
1kΩ
18kΩ
- 53 -
EXPLATION FOR MICOM CIRCUIT
u Temperature compensation table at the cold storage room is as follows:
Modification
resistance
470 Ω
Current
resistance
Cold storage
3.3 kΩ
5.6 kΩ
8.2 kΩ
10 kΩ
12 kΩ
18 kΩ
33 kΩ
56 kΩ
180 kΩ
470Ω
No
change
0.5 °C
Up
1 °C
Up
1.5 °C
Up
2 °C
Up
2.5 °C
Up
3 °C
Up
3.5 °C
Up
4 °C
Up
4.5 °C
Up
5 °C
Up
2 kΩ
0.5 °C
Down
No
change
0.5 °C
Up
1 °C
Up
1.5 °C
Up
2 °C
Up
2.5 °C
Up
3 °C
Up
3.5 °C
Up
4 °C
Up
4.5 °C
Up
3.3 kΩ
1 °C
Down
0.5 °C
Down
No
change
0.5 °C
Up
1 °C
Up
1.5 °C
Up
2 °C
Up
2.5 °C
Up
3 °C
Up
3.5 °C
Up
4 °C
Up
5.6 kΩ
1.5 °C
Down
1 °C
Down
0.5 °C
Down
No
change
0.5 °C
Up
1 °C
Up
1.5 °C
Up
2 °C
Up
2.5 °C
Up
3 °C
Up
3.5 °C
Up
8.2 kΩ
2 °C
Down
1.5 °C
Down
1 °C
Down
0.5 °
Drop
No
0.5 °C
change
Up
1 °C
Up
1.5 °C
Up
2 °C
Up
2.5 °C
Up
3 °C
Up
10 kΩ
2.5 °C
Down
2 °C
Down
1.5 °C
Down
1 °C
Down
0.5 °C
Down
No
change
0.5 °C
Up
1 °C
Up
1.5 °C
Up
2 °C
Up
2.5 °C
Up
12 kΩ
3 °C
Down
2.5 °C
Down
2 °C
Down
1.5 °C
Down
1 °C
Down
0.5 °C
Down
No
change
0.5 °C
Up
1 °C
Up
1.5 °C
Up
2 °C
Up
18 kΩ
3.5 °C
Down
3 °C
Down
2.5 °C
Down
2 °C
Down
1.5 °C
Down
1 °C
Down
0.5 °C
Down
No
change
0.5 °C
Up
1 °C
Up
1.5 °C
Up
33 kΩ
4 °C
Down
3.5 °C
Down
3 °C
Down
2.5 °C
Down
2 °C
Down
1.5 °C
Down
1 °C
Down
0.5 °C
Down
No
change
0.5 °C
Up
1 °C
Up
56 kΩ
4.5 °C
Down
4 °C
Down
3.5 °C
Down
3 °C
Down
2.5 °C
Down
2 °C
Down
1.5 °C
Down
1 °C
Down
0.5 °C
Down
No
change
0.5 °C
Up
180 kΩ
5 °C
Down
4.5 °C
Down
4 °C
Down
3.5 °C
Down
3 °C
Down
2.5 °C
Down
2 °C
Down
1.5 °C
Down
1 °C
Down
0.5 °C
Down
No
change
room
(RCR1)
2 kΩ
u This circuit is a circuit to enter the necessary level of temperature compensation for adjusting different temperature every
model at the cold storage room into MICOM.
- 54 -
EXPLATION FOR MICOM CIRCUIT
2. Display Circuit
<GC-P/L207>
EXPRESS
FRZ
FILTER STATUS DISPENSER
BUTTON
CUBE
WATER
ON
EXPRESS FRZ
CRUSH FRZ TEMP
DISPENSER
FREEZER
REF TEMP
REFRIGERATOR
- 55 -
FILTER
LOCK
EXPLATION FOR MICOM CIRCUIT
<GC-B/C207>
EXPRESS FRZ
EXPRESS FRZ
FRZ TEMP
FREEZER
REF TEMP
REFRIGERATOR
- 56 -
CHILD LOCK
LOCK
EXPLATION FOR MICOM CIRCUIT
1-11. Key Button Input and Display Lighting Circuit(Bar-LED, Dot-LED)
This circuit is to judge the work of function control button on the operation panel and to light each function indication led
(LED module). It is driven by SCAN method.
PCB ASSEMBLY, DISPLAY
<GC-P/L207: 88-LED>
EXPRESS
FRZ
FILTER STATUS DISPENSER
BUTTON
CUBE
WATER
ON
EXPRESS FRZ
CRUSH FRZ TEMP
DISPENSER
FREEZER
REF TEMP
REFRIGERATOR
FILTER
LOCK
<GC-P/L207: Bar-LED>
PWB ASSEMBLY, DISPLAY
EXPRESS
FRZ
CUBE
FRZ TEMP
REF TEMP FILTER STATUS DISPENSER
BUTTON
WATER
ON
EXPRESS FRZ
CRUSH
DISPENSER
FREEZER
- 57 -
REFRIGERATOR
FILTER
LOCK
EXPLATION FOR MICOM CIRCUIT
<GC-P/L207: Dot-LED>
PWB ASSEMBLY, DISPLAY
EXPRESS FRZ
FRZ TEMP
REF TEMP
CUBE
WATER
CRUSH
EXPRESS FRZ
FREEZER
REFRIGERATOR
DISPENSER
Lock: Hold 3 Secs
- 58 -
EXPLATION FOR MICOM CIRCUIT
<GC-B/C207: 88-LED>
EXPRESS FRZ
EXPRESS FRZ
FRZ TEMP
FREEZER
REF TEMP
REFRIGERATOR
CHILD LOCK
LOCK
<GC-B/C207: Bar, Dot-LED>
EXPRESS FRZ
EXPRESS FRZ
FRZ TEMP
REF TEMP
FREEZER
REFRIGERATOR
- 59 -
CHILD LOCK
LOCK
EXPLATION FOR MICOM CIRCUIT
2. Compensation circuit for weak-cold, over-cold at freezing room
<GC-B/C207: 88-LED>
<GC-B/C207: Bar, Dot-LED>
Temperature compensation in CUT
Compensation
for weak-cold
JCR3
JCR4
JCR1
+1 °C
JCR2
+1 °C
JCR3
-1 °C
JCR4
-1 °C
Compensation
for over-cold
JCR1
JCR2
+2 °C
-2 °C
Temperature compensation value
at cold storage room
Remarks
0 °C (In shipment from factory)
CUT
-1 °C
CUT
-1 °C
CUT
+1 °C
CUT
CUT
CUT
-2 °C
CUT
CUT
CUT
CUT
+2 °C
0 °C
CUT
CUT
CUT
CUT
CUT
CUT
CUT
+1 °C
0 °C
0 °C
CUT
0 °C
CUT
CUT
-1 °C
CUT
CUT
CUT
+1 °C
CUT
CUT
CUT
0 °C
u The above option circuit is a circuit to compensate for temperature at the cold storage room by simply cutting in service.
- 60 -
EXPLATION FOR MICOM CIRCUIT
3. PWB Parts Drawings and List
3-1. PWB Assembly Main Parts Drawings
<GC-P/L207: 88-LED>
- 61 -
EXPLATION FOR MICOM CIRCUIT
<GC-P/L207: Bar-LED>
- 62 -
EXPLATION FOR MICOM CIRCUIT
<GC-P/L207: Dot-LED>
- 63 -
EXPLATION FOR MICOM CIRCUIT
<GC-B/C207: 88-LED>
- 64 -
EXPLATION FOR MICOM CIRCUIT
<GC-B/C207: Bar, Dot-LED>
- 65 -
EXPLATION FOR MICOM CIRCUIT
3-2. Parts List
<GC-P/L207: 88-LED>
- 66 -
EXPLATION FOR MICOM CIRCUIT
<GC-P/L207: 88-LED>
- 67 -
EXPLATION FOR MICOM CIRCUIT
<GC-P/L207: Bar-LED>
- 68 -
EXPLATION FOR MICOM CIRCUIT
<GC-P/L207: Bar-LED>
- 69 -
EXPLATION FOR MICOM CIRCUIT
<GC-P/L207: Dot-LED>
- 70 -
EXPLATION FOR MICOM CIRCUIT
<GC-P/L207: Dot-LED>
- 71 -
EXPLATION FOR MICOM CIRCUIT
<GC-B/C207: 88-LED>
- 72 -
EXPLATION FOR MICOM CIRCUIT
<GC-B/C207: 88-LED>
- 73 -
EXPLATION FOR MICOM CIRCUIT
<GC-B/C207: Bar, Dot-LED>
- 74 -
EXPLATION FOR MICOM CIRCUIT
<GC-B/C207: Bar, Dot-LED>
- 75 -
EXPLATION FOR MICOM CIRCUIT
4. PWB circuit diagram - PWB circuit diagram may vary a little bit depending on actual condition.
<GC-P/L207: 88-LED>
- 76 -
PCB ASSEMBLY, MAGIC DISPLAY
PCB ASSEMBLY, DISPLAY
EXPLATION FOR MICOM CIRCUIT
- 77 -
EXPLATION FOR MICOM CIRCUIT
<GC-P/L207: Bar-LED>
- 78 -
EXPLATION FOR MICOM CIRCUIT
PWB ASSEMBLY, DISPLAY
- 79 -
EXPLATION FOR MICOM CIRCUIT
<GC-P/L207: Dot-LED>
- 80 -
EXPLATION FOR MICOM CIRCUIT
PWB ASSEMBLY, DISPLAY
- 81 -
EXPLATION FOR MICOM CIRCUIT
<GC-B/C207: 88-LED>
- 82 -
PCB ASSEMBLY, MAGIC DISPLAY
EXPLATION FOR MICOM CIRCUIT
- 83 -
EXPLATION FOR MICOM CIRCUIT
<GC-B/C207: Bar, Dot-LED>
- 84 -
EXPLATION FOR MICOM CIRCUIT
PWB ASSEMBLY, DISPLAY
- 85 -
ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR
1. Working Principles
1-1. Ice Maker Working Principles
Power Input
Initial Control
• Level Ice Maker Cube Mould for “Initial Control”
after power is input.
Ice Making Control
• Wait until the water in the cube mould is frozen
after ice maker starts operation.
Ice Ejection Control
• Check ice bank is full of ice by rotating ice ejection
motor in normal and reverse direction and eject ice into
the ice bank if ice bank is not full.
Water Supply Control
• Conduct “Ice Making Control” after supplying water into the ice maker
cube mould by operating water valve.
Test Control
• This is for refrigerator assembly line and service. When “ice making test switch” is pressed,
it operates in the following steps: initial ice ejection water supply control steps.
1-2. Dispenser Working Principles
1. This function is available in Model GR-P197, GR-L197 where water and ice are available without opening freezer
compartment door.
2. “Crushed Ice” is automatically selected when power is initially applied or reapplied after power cut.
3. When dispenser selection switch is continuously pressed, light is on in the following sequence:
“Water” → “Cube Ice” → “Crushed Ice” .
4. Lamp is on when dispenser rubber button is pressed and vice versa.
5. When dispenser crushed ice rubber button is pressed, dispenser solenoid and geared motor work so that crushed ice can
be dispensed if there is ice in the ice bank.
6. When dispenser cube ice rubber button is pressed, dispenser solenoid, cube ice solenoid and geared motor work so that
cube ice can be dispensed if there is ice in the ice bank.
7. When dispenser water rubber button is pressed, water valve opens and water is supplied if water valve is normally
installed on the right side of the machine room.
8. Ice and water are not available when freezer door is open.
- 86 -
ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR
2. Function of Ice Maker
2-1. Initial Control Function
1. When power is initially applied or reapplied after power cut, it detects level of ice maker cube mould after completion of
MICOM initialization. The detecting lever moves up and down.
2. The level of ice maker cube mould is judged by output signal, high and low signal, of Hall IC. Make the cube mould to be
horizontal by rotating ice ejection motor in normal or reverse direction so that High/Low signal can be applied to MICOM
Pin No. 44.
3. If there is no change in signals one minute after the geared motor starts to operate, it stops icemaker operation and check
the signal every hour. It resets initialization of icemaker when it becomes normal.
4. It judges that the initial control is completed when it judges the ice maker cube mould is horizontal.
5. Ice ejection conducts for 1 cycle irrespect of ice in the ice bank when power is initially applied.
2-2. Water Supply Control Function
1. This is to supply water into the ice maker cube mould by operating water valve in the machine room when ice ejection
control is completed and ice maker mould is even.
2. The quantity of water supplied is determined by DIP switch and time.
<Water Supply Quantity Table>
DIP SWITCH SETTING
WATER SUPPLY TIME
No
S/W 1
S/W 2
S/W 3
1
OFF
OFF
OFF
6.5 Sec.
2
ON
OFF
OFF
5.5 Sec.
3
OFF
ON
OFF
6 Sec.
4
ON
ON
OFF
7 Sec.
5
OFF
OFF
ON
7.5 Sec.
6
ON
OFF
ON
8 Sec.
7
OFF
ON
ON
9 Sec.
8
ON
ON
ON
10 Sec.
REMARKS
* The quantity of water supplied
depends on DIP switch setting
conditions and water pressure as it is
a direct tap water connection type.
(the water supplied is generally 80 cc
to 120 cc)
* DIP switch is on the main PWB.
3. If water supply quantity setting is changed while power is on, water supplies for the amended time. If DIP switch is
changed during water supply, water shall be supplied for the previous setting time. But it will supply for the amended time
from the next supply.
4. When water supply signal is applied to water and ice valves at the same time during water supply, water shall be supplied
to water valve. If water supply signal is applied to ice valve during water supply, water shall be supplied to both water and
ice valves.
2-3. Ice Making Control Function
1. Ice making control is carried out from the completion of water supply to the completion of ice making in the cube mould.
Ice making sensor detects the temperature of cube mould and completes ice making. (ice making sensor is fixed below
ice maker cube mould)
2. Ice making control starts after completion of water supply control or initial control.
3. It is judged that ice making is completed when ice making sensor temperature reaches at -8°C after 100 minutes when
water is supplied to ice maker cube mould.
4. It is judged that ice making is completed when ice maker sensor temperature reaches below -12 °C after 20 minutes in
condition 3.
- 87 -
ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR
2-4. Ice Ejection Control Function
1. This is to eject ice from ice maker cube mould after ice making is completed.
2. If Hall IC signal is on within 3.6 seconds after ice ejection motor rotates in normal direction, it does not proceed ice
ejection but waits. If the ice bank is full, ice ejection motor rotates in normal direction in every hour to check the condition
of ice bank. If the ice bank is not full, the water supply control starts after completion of ice ejection control. If the ice bank
is full, ice ejection motor rotates in reverse direction and sops under ice making or waiting conditions.
3. If ice bank is not full, ice ejection starts. The cube mould tilts to the maximum and ice is separated from the mould and ice
checking lever raises.
4. Ice ejection motor stops for 1 second if Hall IC signal changes from OFF (low) to ON (high) after 3.6 seconds when ice
ejection motor rotates in normal direction. If there is no change in Hall IC signals within 1 minute after ice ejection motor
operates, ice ejection motor stops as ice ejection motor or hall IC is out of order.
5. If ice ejection motor or Hall IC is abnormal, ice ejection motor rotates in normal direction to exercise initial operation. It
resets the ice maker if ice ejection motor or Hall IC is normal.
6. The mould stops for 1 second at maximum tilted conditions.
7. The mould returns to horizontal conditions as ice ejection motor rotates in reverse direction.
8. When the mould becomes horizontal, the cycle starts to repeat:
Water Supply → Ice Making → Ice Ejection → Mould Returns to Horizontal
Maximum tilting
point
Bank is
not full
HALL IC
OUTPUT
SIGNALS
Bank is
full
HALL IC
OUTPUT
SIGNALS
ICE CHECKING LEVEL 30°
ICE CHECKING
AXIS
Lock
Ice making
Ice Checking
(Original point)
2±1 sec
Ice Ejection
9±3 sec
Horizontal
Conditions
8±3 sec
<Timing Chart During Ice Ejection>
- 88 -
Lock
Level Retrun
Conditions
ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR
2-5 Test Function
1. It is to force the operation during operation test, service, and cleaning. The test switch is mounted under the automatic
ice maker. The test function starts when the test switch is pressed for more than 0.5 second.
2. Test button does not work during ice ejection and water supply. It works when it is in the horizontal conditions. If mould is
full of ice during test function operation, ice ejection control and water supply control do not work.
3. When test switch is pressed for more than 0.5 second in the horizontal conditions, ice ejection starts irrespect of the
mould conditions. Water shall be splashed if test switch is pressed before the water in the mould freezes. Water shall be
supplied while the mould returns to the horizontal conditions after ice ejection. Therefore the problems of ice ejection,
returning to the horizontal conditions, and water supply can be checked by test switch. When test function performs
normally, buzzer sounds and water supply shall carry out. Check it for repair if buzzer does not sound.
4. When water supply is completed, the cycle operates normally as follows: Ice making → Ice ejection → Returning to
horizontal conditions → Water supply
5. Remove ice from the ice maker cube mould and press test switch when ice maker cube mould is full of ice as ice ejection
and water supply control do not work when cube mould is full of ice.
2-6. Other functions relating to freezer compartment door opening
1. When freezer door is open, ice dispenser stops in order to reduce noise and ice drop.
2. When freezer door is open during ice ejection and cube mould returning to horizontal condition, ice ejection and cube
mould level return proceed.
3. When freezer door is open, geared motor and cube ice solenoid immediately stop and duct door solenoid stops after 5
seconds.
4. Water dispenser stops in order to protect water drop when freezer door is open.
5. Test function operates normally irrespect of refrigearator compartment door opening.
- 89 -
ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR
3. Ice Maker Troubleshooting
* Troubleshooting: it is possible to confirm by pressing freezer and refrigerator temperature control buttons for more
than 1 second. (ice maker is normal if all leds are on): refer to trouble diagnposis function in MICOM
function 2-8 (page 18)
Is DC Power (5V and 12V)
output normal?
No
Failed DC Power
Change main PWB
• Check DC power (5V, 12V).
Yes
Is cube ice led off during
troubleshooting check?
Yes
Yes
No
Yes
Failed ice maker unit test switch
Replace Ice Maker Unit
Replace Main PWB
Replace Ice maker Unit
• Are both ends 5,6 of CON8
test switch open?
• Defects between test switch
and board (Pin No. 43 of IC1).
• Are both ends (3,4) of CON8
ice maker stop switch short?
Yes
Is water suppy normal
after Ice ejection and level return
by ice ejection motor?
Failed Ice Maker Unit
• Is the resistance of both ends
9,10 of ice ejection motor of
CON8 between 18 and 22Ω?
• Is ice ejection motor drive circuit
(IC11 and peripheral circuits)
normal?
• Defects between Hall IC and
Board (Pin No. 42 of IC1).
• Confirm ice ejection and level
return when pressing
test switch.
No
Are ice
ejection and level return
normal when test switch is
pressed for more than 0.5 second?
Does the bell
sound once?
Replace Ice making
Sensor
• Check the resistance of
both ends (1,2) of ice making
sensor of CON8.
• Defects between ice making
sensor and board
(Pin No. 60 of IC1)
No
Is Crushed Ice LED off during
troubleshooting check?
Failed ice making sensor
No
Poor water supply
• Is power applied to water
supply valve?
• Does the water supply
valve work normally?
• Is the water supply line
normally connected?
Normal
- 90 -
Replace water
supply valve
ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR
4. Ice Maker Circuits
<GC-P/L207: 88-LED>
<GC-P/L207: Bar-LED>
- 91 -
ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR
<GC-P/L207: Dot-LED>
The above ice maker circuits are applied to GC-P207, GC-L207 and composed of ice maker unit in the freezer and ice
maker driving part of main PWB. Water is supplied to the ice maker cube mould through the solenoid relay for ice valve of
solenoid valve in the machine room by opening valve for the set time. Water supply automatically stops when water supply
time is elapsed. This circuit is to realize the functions such as ice ejection of ice maker cube mould, ice full detection,
leveling, ice making temperature detection, etc. Refer to the temperature detecting circuits of Main PWB for ice making
temperature detection. Ice maker test switch input detection is the same as the door switch input detection circuit of main
PWB.
1. It is to force to operate during operation test, service, and cleaning. The test switch is mounted under the automatic ice
maker. The test function starts when the test switch is pressed for more than 0.5 second.
2. Test button does not work during ice ejection and water supply. It works when it is in the horizontal conditions. If cube
mould is full of ice during test function operation, ice ejection control and water supply control do not work.
3. Ice ejection carries out irrespect of ice formation in the ice making tray if test switch is pressed for more than 0.5 second.
Water shall be splashed if test switch is pressed before the water in the mould is completely frozen. Water shall be
supplied while the mould returns to the horizontal conditions after ice ejection. Therefore the problems of ice ejection,
leveling, and water supply can be checked by test switch. When test function performs normally, buzzer sounds and
water supply shall carry out. Check it for repair if buzzer does not sound.
4. When water supply is completed, normal cycle works: Ice Making → Ice Ejection → Level Return → Water Supply.
5. If ice maker stop switch is set to ON, normal cycle operates: Ice Making → Ice Ejection → Level Return → Water Supply.
If it is set to OFF, ice making conducts but ice ejection, level return, and water supply do not work.
- 92 -
CIRCUIT
<GC-P/L/B/C207: Bar-LED>
- 93 -
CIRCUIT
<GC-P/L/B/C207: 88-LED>
- 94 -
TROUBLE DIAGNOSIS
1. TROUBLE SHOOTING
CLAIMS.
1. Faulty start
CAUSES AND CHECK POINTS.
HOW TO CHECK
* Measuring instrument :
Multi tester
1) No power on outlet.
2) No power on cord.
Bad connection between adapter and outlet. (faulty adapter)
The Inner diameter of adapter.
The distance between holes.
The distance between terminals.
The thickness of terminal.
Bad connection between plug and adapter (faulty plug).
The distance between pins.
Pin outer diameter.
3) Shorted start circuit.
No power on Disconnected copper wire.
power cord.
Power cord is disconnected.
Faulty soldering.
Internal electrical short.
Loose contact.
- Large distance between
male terminal.
- Thin female terminal.
Faulty terminal contact.
■ Check the voltage.
If the voltage is within ±85%
of the rated voltage, it is OK.
■ Check the terminal
movement.
■ Check both terminals of
power cord.
Power conducts : OK.
No power conducts : NG
Terminal disconnected.
Bad sleeve assembly.
Disconnected.
O.L.P is off.
Weak connection.
Short inserted cord length.
Worn out tool blade.
Capacity of O.L.P is small.
Characteristics of O.L.P is bad.
Bad connection.
Power is
Inner Ni-Cr wire blows out.
disconnected.
Bad internal connection.
Faulty terminal caulking (Cu wire is cut).
Bad soldering.
■ Check both terminals of
O.L.P.
If power conducts : OK.
If not : NG.
No electric power on compressor. - Faulty compressor.
Faulty PTC.
Power does not conduct. - Damage.
Bad characteristics. - Initial resistance is big.
Bad connection with Too loose.
compressor.
Assembly is not possible.
Bad terminal connection.
4) During defrost.
Start automatic defrost.
Cycle was set at defrost when the refrigerator
was produced.
- 95 -
■ Check the resistance of both
terminals.
At normal temperature 6 :
OK.
If disconnected : ∞.
TROUBLE DIAGNOSIS
CLAIMS.
2. No cooling.
CAUSES AND CHECK POINTS.
2) Refrigeration system is clogged.
Moisture
clogged.
Residual moisture
in the evaporator.
Air Blowing.
Not performed.
Too short.
Impossible moisture
confirmation.
Low air pressure.
Leave it in the air.
Caps are missed.
No electric
power on
thermostat.
HOW TO CHECK
■ Check the clogged
evaporator by heating (as
soon as the cracking sound
begins, the evaporator start
freezing)
During rest time.
After work.
Residual moisture.
Not dried in the compressor.
Elapsed more than 6 months after drying
Caps are missed.
No pressure when it is open.
Insufficient drier
capacity.
Dry drier - Drier temperature.
Leave it in the air.
Check on package
condition.
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.
■ 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.
Drier cloggeing.
Capillary tube melts. - Over heat.
Clogged with foreign materials.
Desiccant powder.
Weld oxides.
Drier angle.
Reduced cross section by cutting. - Squeezed.
Foreign material clogging.
Compressor cap is disconnected.
Foreign materials are in the pipe.
- 96 -
TROUBLE DIAGNOSIS
CLAIMS.
3. Refrigeration
is weak.
CAUSES AND CHECK POINTS.
1) Refrigerant Partly leaked.
Weld joint leak.
Parts leak.
2) Poor defrosting capacity.
Drain path (pipe) clogged.
HOW TO CHECK
Inject P/U into drain hose.
Foreign materials
penetration.
■ Check visually.
Inject through the
hole.
Seal with drain.
P/U lump input.
Screw input.
Other foreign materials
input.
Cap drain is not disconnected.
Defrost heater does not
generate heat.
Parts
disconnected.
Heater
Sheath
Wire is cut.
- Lead wire.
- Heating wire.
- Contact point
between heating and
electric wire.
Dent by fine evaporator.
Heating wire is corroded
- Water penetration.
Bad terminal connection.
■ Check terminal
Conduction: OK.
No conduction: NG.
If wire is not cut, refer to
resistance.
P=Power
V=Voltage
R=Resistance
V2
P= —
R
V2
R= —
P
- 97 -
TROUBLE DIAGNOSIS
CLAIMS.
3. Refrigeration
is weak.
CAUSES AND CHECK POINTS.
Residual
frost.
Weak heat from heater.
HOW TO CHECK
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
Door sag.
Gap.
Bad attachment.
Contraction.
Bad adhesion.
Weak binding force at hinge.
4) No cooling air circulation.
Faulty fan motor.
Fan motor.
Door switch.
Self locked.
Wire is cut.
Bad terminal contact.
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.
- 98 -
■ Check the fan motor
conduction: OK.
No conduction: NG.
TROUBLE DIAGNOSIS
CLAIMS.
3. Refrigeration
is weak.
CAUSES AND CHECK POINTS.
HOW TO CHECK
4) No cooling air circulation.
Faulty fan motor.
Fan is
constrained.
Fan shroud contact. - Clearance.
Damping evaporator contact.
Accumulated residual frost.
Small cooling air
discharge.
Insufficient
motor RPM
Fan overload. - Fan misuse.
Bad low termperature RPM characteristics.
Rated power misuse.
Low voltage.
Faulty fan.
Shorud.
Fan misuse.
Bad shape.
Loose connection. - Not tightly connected.
Insert depth.
Bent.
Ice and foreign materials on rotating parts.
5) Compressor capacity.
Rating misuse.
Small capacity.
Low valtage.
6) Refrigerant
too much or too little.
Malfunction of charging cylinder.
Wrong setting of refrigerant.
Insufficient compressor. - Faulty compressor.
7) Continuous operation
- No contact of temperature controller. - Foreign materials.
8) Damper opens continuously.
Foreign materials
P/U liquid dump.
jammed.
EPS water sediment.
Screw.
Failed sensor. - Position of sensor.
Characteristics
Bad characteristics of its own temperatue.
of damper.
Parts misuse.
Charge of temperature - Impact.
characteristics.
9) Food storing place. - Near the outlet of cooling air.
- 99 -
■ Check visually after
disassembly.
■ Check visually after
disassembly.
TROUBLE DIAGNOSIS
CLAIMS.
4. Warm
refrigerator
compartment
temperature.
CAUSES AND CHECK POINTS.
1) Colgged cooling path.
P/U liquid leak.
Foreign materials. –– P/U dump liquid.
2) Food storate.
5. No automatic
operation.
(faulty
contacts.)
Store hot food.
Store too much at once.
Door open.
Packages block air flow.
1) Faulty temperature sensor in freezer or refrigerator compartment.
Faulty contact.
Faulty temperature characteristics.
2) Refrigeration load is too much.
3) Poor insulation.
4) Bad radiation.
Food.
Too much food.
Hot food.
Frequent opening and closing.
Cool air leak.
Poor door close. – Partly opens.
High ambient temperature.
Space is secluded.
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
ice formation.
HOW TO CHECK
1) Ice in freeezer compartment.
External air inflow. –– Rubber motor assembly direction(reverse).
Door opens
Weak door closing power.
but not closes.
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.
Insufficient closing.
Door opens
but not closes.
Door sag.
Food hinders door closing.
Gasket gap.
3) Condensation on liner foam.
Cool air leak
Not fully filled.
and transmitted.
Toop table part.
Out plate R/L part.
Flange gap. –– Not sealed.
Gasket gap.
- 100 -
■ Inspect parts measurements
and check visually.
TROUBLE DIAGNOSIS
CLAIMS.
6. Dew and
ice formation.
CAUSES AND CHECK POINTS.
HOW TO CHECK
4) Dew on door.
Dew on the duct door. - Duct door heater is cut.
Dew on the dispense
Recess Heater is cut.
recess.
Duct door is open. / Foreign material clogging.
Dew on the door surface.
Dew on the
gasket surface.
Not fully filled.
Surface.
Cormer.
P/U liquid contraction.
Liquid shortage.
Liquid leak.
Bad wing adhesion.
Wing sag(lower part).
Door liner shape mismatch.
Corner.
Too much notch.
Broken.
Home Bar heater is cut.
5) Water on the floor.
Dew in the refrigerator compartment.
Defrosted water overflows.
Clogged discharging hose.
Discharging hose
Evaporation tray located at wrong place.
location.
Tray drip.
Damaged.
Breaks, holes.
Small Capacity.
Position of drain.
7. Sounds
1) Compressor compartment operating sounds.
Compressor sound
Sound from machine itself.
inserted.
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.
Capacitor noise.
Pipe sound.
Chattering sound.
Insulation paper vibration.
Pipe contacts each other. – Narrow interval.
No vibration damper. Damping rubber-Q.
Damping rubber-S.
Capillary tube unattached.
- 101 -
TROUBLE DIAGNOSIS
CLAIMS.
7. Sounds
CAUSES AND CHECK POINTS.
1) Compressor compartment operating 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.
Condenser drain sound.
Bad connection.
Partly damaged.
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 fan sounds.
Unbalance.
Surface machining conditions.
Fan distortion.
Misshappen.
Burr.
Ice on the fan. –– Air intake (opposite to motor
rubber assembly.)
Motor shaft
contact sounds.
Resonance.
Evaporator noise.
Supporter disorted.
Tilted during motor assembly.
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.
- 102 -
HOW TO CHECK
TROUBLE DIAGNOSIS
CLAIMS.
8. Faulty lamp
(freezer and
refrigerator
compartment).
CAUSES AND CHECK POINTS.
1) Lamp problem.
2) Bad lamp assembly.
3) Bad lamp socket.
Disconnection.
Short.
HOW TO CHECK
Filament blows out.
Glass is broken.
Not inserted.
Loosened by vibration.
Bad soldering.
Bad rivet contact.
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.
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.
Compressor Compartment terminal. - Touching other
components.
Freezer compartment terminal. - Touching evaporator pipe.
3) Faulty parts.
Transformer.
Coil contacts cover.
Welded terminal parts contact cover.
Compressor.
Bad coil insulation.
Plate heater.
Melting fuse.
Sealing is broken.
Moisture penetration.
Cord heater.
Pipe damaged.
Moisture penetration.
Bad sealing.
Sheath heater.
- 103 -
■ Connect conduction and
non-conduction parts and
check with tester.
Conduction: NG.
Resistance∞: OK.
TROUBLE DIAGNOSIS
CLAIMS.
10. Structure,
appearance
and others.
CAUSES AND CHECK POINTS.
1) Door foam.
Sag.
Weak torque of
hinge connection.
Weak gasket
adhesion.
Fixed tape.
Bolt is loosened during
transportaion.
Not tightly fastened.
Screw worn out .
Adhesion surface.
Not well fixed.
Noise during
operation.
Hinge interference.
Malfunction.
Not closed Interference between door liner and inner liner.
Refrigerator
Stopper worn out.
compartment is
Bad freezer compartment door
opened when freezer
assembly.
compartment is
No stopper.
closed (faulty stopper).
2) Odor.
Temperature of
refrigerator
compartment.
High.
Bigger door foam.
Hinge-Pin tilted-Poor flatness.
No washer.
No grease and not enough
quantity.
Faulty damper control.
Button is set at "weak".
Door is open (interference by
food).
Deodorizer.
No deodorizer.
Poor capacity.
Food Storage.
Seal condition.
Store special odorous food.
Long term storage.
Others.
Odors from chemical procucts.
- 104 -
HOW TO CHECK
- 105 -
operate.
does not
Compressor
Problems
Causes
- Compressor is frozen.
- Faulty PTC.
2-2. Compressor
penetration).
(tracking due to moisture and dust
- Short circuit of components
- High voltage.
- Electricity leakage.
- Short circuit by insects.
connected to high voltage.
- Low voltage products are
Fuse blows out. - Short circuit by wrong connection.
low voltage).
problem(ex. short, high voltage,
- Find and remove the cause of
- Reconnect the connecting parts.
-Reconnect the connecting parts.
-Replace the components.
Measures
OLP
contacted.
It starts as soon as it is
Power
Main winding
Auxiliary winding
• Refer to weld repair procedures.
evacuate, and recharge refrigerant.
compressor with new one, weld,
- Not operate: Replace the frozen
apply power directly to the
compressor to force operation.
- Operates: Check other parts.
- During forced operation:
- Check other parts.
- If it is not infinite, it is normal.
with new one.
- If resistance is infinite, replace it
Measures
normal(capacitor, PTC, OLP),
- If compressor assembly parts are
Vlaue:∞ is defective.
- Check the resistance.
Checks
with testerf (if it is 0Ω, it is shorted).
- Check the resistance of power cord
(between power cord and products). - Replace with rated fuse.
- Check the input volt are with tester
or visually.
- Check the fuse with tester
- Check visually.
and adapter.
- Faulty connection between plug
- Check the voltage with tester.
- Check visually.
- Power cord cut.
- Faulty connector insertion.
Checks
outlet.
Causes
No power on
Problems
2-1. Power
2. Faults
Remarks
the cause and prevent.
frequently, reconfirm
■ If fuse blowns out
its specification.
fuse after confirming
- Replace with rated
Remarks
TROUBLE DIAGNOSIS
- 106 refrigerator and wall (50 mm in
compressor compartment.
from grill for easy heat radiation.
while the refrigerator is off.
cleaner from the coils condenser
refrigerator is on.
performs while the
50mm).
- Remove dust and contaminants
broken if cleaning
- The fan may be
Remarks
refrigerator and walls (minimum
- Keep clearance between
attach sheets.
- Door liner bent:replace door or
- Door sag: fix door.
- Replace door switch.
- Confirm icing causes and repair.
deformation).
is constrained by shroud
(Repair and/or replace shroud if fan
- Maintain clearance and remove ice
- Reconnect and reinsert.
- Replace fan motor.
Measures
- Check dust on the coils condenser. - Remove the dust with vacuum
compressor compartment.
- Check dust on the grill in
minimum).
- Check the clearance between the
button: Check visually.
- Door cannot press door switch
Press button to check operation.
- Faulty button pressure and contact:
Press button to check
- Iced button (faulty) operation:
Confirm visually.
– Fan icing:
visually.
contact: Confirm
- Fan constraint. – Fan shroud
terminal visually.
- Bad terminal contact: Check
- Wire is cut.
rotation.
Bad radiation conditions in
switch operation.
Faulty fan motor due to faulty door
compartment.
- Rotate rotor manually and check
0Ω: short.
∞Ω: cut.
in the freezer
tester.
fan motor.
temperature
Checks
Poor cool air circulation due to faulty - Lock –– Check resistance with a
Causes
High
Problems
2-3. Temperature
TROUBLE DIAGNOSIS
Shortage of refrigerant.
auxiliary in the compressor
compartment.
- 107 -
refrigerant.
Weld the leaking part, recharge the
Measures
- If it does not, it is not good.
surface, it is OK.
refrigerant.
refrigerant, and recharge new
- No leaking, remove the remaining
refrigerant.
compartment.
- If the frost forms evenly on the
evacuate, and recharge the
of evaporator in the freezer
Check frost formation on the surface - Find out the leaking area, repair,
freezer compartment).
compartment and evaporators in
5. Check other parts (compressor
happen during bending).
compartment (cracks can
condenser pipe in compressor
4. Check bending area of wire
(Cu + Fe / Fe + Fe).
3. Check silver soldered parts.
sealing pipe (low pressure side).
2. Check the end of compressor
compartment (high pressure side).
drier inlet and outlet and drier
in the freezer
Check sequence
Checks
1. Check the welded parts of the
Refrigerant leak.
Causes
temperature
High
Problems
2-4. Cooling
Drier must be replaced.
Drier must be replaced.
Remarks
TROUBLE DIAGNOSIS
the refrigerant.
joints might be clogged.
- 108 1. Check cooling fan operation.
compartment.
disconnected from the motor.
2. Check that cooling fan is
Check sequence.
Faulty cooling fan in the compressor
compartment.
evaporator in the freezer
and the frost forms partly on the
condenser is warm, It is not warm
1. Manually check whether
(discharge) in compressor.
joints might be colgged.
Check sequence.
causes, evacuate, and recharge
If it is not, condenser outlet weld
Leak at loop pipe weld joint
Disconnect with torch, remove the
If it is warm, it's OK.
and assembly sequence.
■ Refer to fan motor disassembly
damage and reassemble it.
- If fan is disconnected, check fan
- Replace if motor does not operate.
evacuate, and recharge refrigerant.
Replace the compressor, weld,
seal refrigerant.
condenser discharging line weld
joints might be clogged.
pipe is warm.
- If it's warm, it's OK. If it's not,
weld, evacuate, and recharge
2. Manually check whether hot line
Remove the causes of clogging,
If it is warm, it is OK.
If it is not, compressor discharging
the pipes, and check the clogging.
weld joints with touch, disconnect
- Heat up compressor discharging
Measures
compartment.
1. Check temperature of condenser
Check sequence.
Checks
manually.
Cycle pipe is clogged.
Causes
the freezer
temperature in
High
Problems
Drier must be replaced.
Direr must be replaced.
Remarks
TROUBLE DIAGNOSIS
No defrosting.
Problems
Causes
through the hole to check.
1. Impurities.
- 109 2. Confirm the capacity after
assembly).
Tolerance: ±7%
Compare P and lavel capacity.
V2 (V: Rated voltage of user country)
P= ––
R (R: Resistance of tester[Ω])
into the formula.
substituting the resistance value
1. Check heater label.
1. Confirm in the Sucking duct.
Wrong heater rating (or wrong
Heater plate(Ice in the gap).
Gap between Sucking duct and
(check drains outside).
2. Put hot water into the drain
of ice, insert the copper line
2. Ice.
explanations.
• Parts replacement: Refer to parts
Heating wire is short and wire is cut.
Measures
- How to replace: Refer to main parts.
Faults:replace.
the disconnected parts.
bottom with hand and assemble
2) Push the Heater plate to drain
gap melts down.
supply hot water until the ice in the
impurities and ice in the gap, and
1) Turn off the power, confirm
disconnected parts.
duct manually and assemble the
4) Push the heater plate to sucking
3) Check the water outlet.
2) Put in hot water to melt down frost.
frost is severe.)
3hours and pour in hot water if
copper wire.(Turn off more than
1. Confirm foreign materials. In case 1) Push out impurities by inserting
are clogged:
Sucking duct and discharging hole
Tens to thousands Ω: Short.
0Ω: Short. ∞Ω: Cut.
is cut.
3) Heating wire at lead wire contacts
housing terminal and heater
surface.
2) Lead wire of heater is cut.
inserting into the evaporator.
Tens to thousands Ω: OK.
2. Check the resistance between
is shorted.
1) Heating wire is damaged when
0Ω: Short. ∞Ω: Cut.
1. Check the resistance of heater.
Checks
the heating wire is cut or the circuit
Heater does not generate heat as
2-5. Defrosting failure
repair.
lead wire is accessible to
contraction tube if the cut
insulation tape and heat
Seal the lead wire with
Remarks
TROUBLE DIAGNOSIS
- 110 from the assembly).
model: disconnect thermostat
described in 1, 2 (mechanical
3. Check the parts which have faults
the sheath heater.
on the heater. Do not put hands on
defrost, and confirm heat generation
around the housing visually,
compartment, check the connection
2. Disconnect parts in the refrigerator
is OK).
insertion into housing of heater,
melting, fuse and motor fan).
door, check that motor fan
operates (If it operates, motor fan
contact and insertion (bad connector
1. Turn on power, open or close the
copper not to impair heating wire).
wire into the duct (soft and thin
2. Check by inserting soft copper
1. Check the inner duct with mirror.
and bad defrosting due to faulty
Bad cool air inflow and discharge,
3) Icing by the gap of heater plate.
the gap of heater plate.
2) Icing by cool air inflow through
duct.
1) Icing by foreign materials in the
Ice in the Sucking duct.
If ∞Ω: wire is cut.
2) Bad soldering.
- Check melting fuse with tester. If 0Ω: OK.
Melting fuse blows out.
No defrosting
Checks
1) Lead wire is cut.
Causes
Problems
with a new one.
remove the parts and replace it
2) If the parts are very damaged,
assembled parts.
housing and reassemble wrongly
1) Check the faulty connector of
3) Reassemble the heater plate.
defrosting.)
on, melt the frost by forced
the ice melt naturally. (If power is
support the front side legs, and let
2) Raise the front side(door side),
1) Turn power off.
resistance with a tester.
- Check wire color when maeasuring
Faullty parts: parts replacement.
Measures
Remarks
TROUBLE DIAGNOSIS
pipe icing.
- 111 grille.
and high load.
- High temperature, high moisture,
- Door opens.
this machine.
5) Customers are not familiar with
- Check ice on the ceilings.
closing.
- Check food interferes with door
and refrigerator compartment.
- Check ice on intake port of freezer
- Defective defrost sensor.
- Defrosing cycle.
after dissembling shroud and fan
- Check frost on the evaporator
- Check parts are faulty.
pressed on "weak").
is overcooled (when button
- Check refrigerator compartment
- Check door assembly conditions.
- Check gasket attached conditions.
compartment.
freezer and refrigerator
- Check icing at intake ports of
dissembling the container box.
baffle and cool air path (pipe) after
- Check icing on the surface of
are clogged).
(check discharge and intake port
- Check the food is stored properly
Checks
- Heater wire is cut.
4) Bad defrosting
- Faulty MICOM (faulty sensor)
compartment.
- Faulty damper in the refrigerator
compartment.
3) Overcooling in the refrigerator
- Faulty assembly.
- Faulty gasket.
compartment.
2) Faulty door or refrigerator
- Bad defrosting.
the discharge port.
- Pipe icing.
- Discharging
- Sealing is not good.
- Too much food is stored and clogs
- Damper icing.
refrigerator compartment.
- Clogged intake port in the
refrigerator
compartment.
1) Bad circulation of cool air.
Causes
Icing in the
Problems
2-6. Icing
- Be acquainted with how to use.
evaporator and pipe.)
- Check defrosting. (Check ice on the
- Check parts related to defrosting.
- Replace faulty parts.
- Door assembly and replacement.
conditions and replace it.
- Correct the gasket attachment
evaporator and pipes.)
defrosting, check ice in the
- Check defrost. (After forced
it if it has defects.
- Check the damper and replace
- Sealing on connecting parts.
- Be acquainted with how to use.
Measures
suppresses sublimation.
circulation, and
interferes with cool air
condensed and iced,
refrigerator, being
can be sucked into the
on the evaporator but
- Moisture cannot frost
cannot be repaired.
be done when it
- Replacement should
defrosting.
is caused by faulty
related parts if problem
- Check the defrost
Remarks
TROUBLE DIAGNOSIS
Causes
- Discharging port is Clogged.
compartment.
- Intake port is colgged in the freezer
- Bad defrosting.
shute.
- Icing in the
- 112 -
- High moisture food(water) is stored.
- Door opens.
use.
5) User is not familiar with how to
- Defrosting cycle
- Faulty defrost sensor.
- Heater wire is cut.
4) Bad defrosting.
- Faulty MICOM.
compartment.
3) Over freezing in the freezer
- Faulty assembly
- Faulty gasket
- Food surface. 2) Bad freezer compartment door
area.
- Basket(rack)
discharging port.
- Cool air
compartment.
- Wall of freezer - Too much food is stored.
grille.
- Surface of fan
compartment.
Ice in the freezer 1) Bad cooling air circulation.
Problems
-Replace defective parts.
- Door assembly and replacement.
conditions and replace it.
- Correct the gasket attachement
defrosting).
evaporator and pipes after forced
- Check defrost (Check ice on the
- Be acquainted with how to use.
Measures
- Check ice on the ice tray.
- Check food holds door open.
refrigerator compartment.
- Check ice on the intake port in the
dissembling shroud and grille.
- Be acquainted with how to use.
defrosting.)
evaporator and pipes after forced
- Check defrosting.(Check ice on the
- Check frost on the evaporator after - Check parts related to defrosting.
though the notch is set at "weak".
refrigerator compartment even
over freezing happens in the
compartment is satisfactory, but
- The Temperature of freezer
intermittently)
(Check if it is operated
- Refrigerator operates pull down.
- Check door assembly conditions.
conditions.
- Check gasket attachment
refrigerator compartment.
- Check icing at intake port of
dissembling shroud and fan grille.
- Check frost on the evaporator after
volume(Less than 75%).
- Check food occupation ratio in
and discharging port of cooling air.)
visually.(Check clogging at intake
- Check food storage conditions
Checks
be repaired.
- Replace when it can not
the faulty defrosting.
problem is caused by
to defrosting if the
- Check the parts related
Remarks
TROUBLE DIAGNOSIS
"Whizz" sound
Problems
2-7. Sound
bell mouth of the fan guide.
conditions in pipes.
sound).
- 113 -
compressor compartment.
4. Fan operation sound in the
compartment.
blade damage.
drip tray.
conditions at condenser and
4.3 Check the screw fastening
4.2 Check drip tray leg insertion.
refrigerator.
4.1 Same as fan confirmation in the
and aging conditions.
3.4 Check fan motor rubber insertion
3.3 Check fan motor.
structures.
3.2 Check the interference with
freezer shroud.
pipes and suction pipe touch
9) Leave a clearance if evaporator
sound.
8) Reassemble the parts which make
interfering parts and seal gaps in
the structures.
-driver (check the change of
2.3 Touch pipes with hands or screw 7) Leve a clearance between
6) Adjust fan to be in the center of
motor.
5) Replace defective fan and fan
4) Avoid pipe interference.
reduces noise in the pipe.
3) Insert rubber where hand contact
are sagged and aged.
2) Replace rubber and seat if they
1) Maintain horizontal level.
Measures
2.2 Check rubber inserting
and their interference.
connected to the compressor
2.1 Check the level of pipes
conditions (sagging and aging).
1.2 Check the rubber seat
refrigerator.
1.1 Check the level of the
Checks
3. Fan operation sound in the freezer 3.1 Check fan insertion depth and
connected to the compressor.
2. Pipes resonat sound which is
operation.
1. Loud sound of compressor
Causes
Remarks
TROUBLE DIAGNOSIS
Causes
vibration.
5. Other structure and parts
4. Moving wheel vibration.
3. Compressor stopper vibration.
compartment.
tube touching in the compressor.
2. Pipes interference and capillary
the refrigerator.
- 114 -
("Click").
them (freezer shroud or inner case).
structures, leave a clearance between
2) If evaporator pipe contacts with other
between operation and defrosting
can make sounds.
and that the temperature difference
1) Explain the principles of refrigeration
vibtates severely.
4) Replace compressor stopper if it
(especially, compressor and pipe).
and restrainer if it is severe.
3) Reduce vibration with rubber
interfere with each other.
2) Leave a clearance where parts
vibration is severe.
and insert foam or cushion where
1) Reassemble the vibrating parts
Measures
shelves, and pipes in the
sources.
1-1 Check time and place of sound
5-1 Touch other structures and parts.
moving wheels.
4-1 Check vibration of front and rear
vibration.
3-1 Check compressor stopper
cover back.
2-2 Check capillary tube touches
compartment with hands.
2-1. Touch pipes in the compressore
on the shelves.
1-2. Check light food and container
shelves in the refrigerator
1-1. Remove and replace the
Checks
refrigerator.
and contraction of evaporator,
Irregular sound. 1. It is caused by heat expansion
("Cluck")
Vibration sound. 1. Vibration of shelves and foods in
Problems
Remarks
TROUBLE DIAGNOSIS
orifice in accumulator internal pipes by
flowing sound.
- 115 -
compartment.
- Seal the gap with sealant between out
and inner cases of hinge in door.
below atomosphere and sucks air into
the refrigerator, making the whistle
sound.
defrosting in the compressor
- Broaden the cap of discharge hose for
closes.
closing the refrigerator or freezer doors.
of the refrigerator decreases sharply
- Check the sound by opening and
When door closes, the internal pressure
accumulator with foam and restrainer.
- If sound is servere, wrap the
internal pressure difference.
and refrigerant flowing phenomenon by
- Explain the principles of freezing cycles
cycles.
- Explain the principles of freezing
when door
turned off.
- Check the sound when compressor is
turned on.
- Check the sound when compressor is
pipes or detach in the compressor
capillary tube weld joints.
compartment.
- Fasten the capillary tube to suction
conditions on the evaporator and
capillary tube again (depth:15±3mm)
- If it is continuous and servere, insert
joints and attach another restrainer.
Sound of whistle
condenser and evaporator.
the pressure difference between
It happens when refrigerant passes
Water boiling or
starts operation after forced defrosting.
sound).
- Check the restrainer attachment
- Check the sound when the refrigerator
as animals crying
initial installation.
evaporator and capillary tube weld
Measures
(almost the same at the end of capillary tube.
Checks
- Check the restrainer attached on the
Causes
Sound "Burping" It happens when refrigerant expands - Check the sound of refrigerant at the
Problems
Remarks
TROUBLE DIAGNOSIS
- 116 -
deodorizer.
Odor from the
Odors of mixed food and plastic
Plastic Odor.
Odor from the old deodorizer.
odors.
Food (garlic, kimchi, etc)
Causes
Food Odor.
Problems
2-8. Odor
- Check the deodorizer odors.
- It happens in the new refrigerator.
plastic bowl and bag.
- Check wet food is wrapped with
- Chedk food cleanliness.
- Check the food in the vinyl wraps.
wall are stained with food juice.
- Check the shelves or inner
- Check the food is not wrapped.
Checks
deodorants.
- Remove and replace the
then in the shiny and windy place.
- Dry the deodorizer with dryer and
or odorous foods.
plastic bag or wraps with wet food
- Persuade customers not to use
- Clean the refrigerator.
button at "strong".
- Clean the refrigerator and set
container instead of vinyl wraps.
- Store the food in the closed
windy place.
- Dry deodorizer in the shiny and
Measures
*Deodorizer : option
Remarks
TROUBLE DIAGNOSIS
- 117 and display circuit.
module.
Defective LED
between Main PCB
damaged.
operation
Check if STR No. 2 and 3 pins
are cut when power is off.
STR Parts are
display LED
terminal with a tester.
fuse is burnt out.
Defective LED.
more than one second.)
pressed at the same time for
key and power freezer key are
pressed (or when both freezer
Main PCB Test switch is
Check if all LEDs are on when
PCB.
Replace display
Lead Wire.
bad.
connect defective
Wire and directly
contact terminal to
display PCB with a tester.
connecting Main PCB and
Reconnect Lead
Replace parts.
Replace PCB fuse.
Replace regulator.
terminal connection is
PCB is cut or connector
main PCB and display
Check Lead Wire terminals
Check fuse in PCB electric
PCB electric terminal
Lead Wire connecting
terminals.
(7812, 7805).
Check voltage at input/output
Defective regulator IC
circuit parts.
trans winding is cut).
DefectivePCB electric
fuse is burnt out.
PCB Trans temperature a tester. (If resistance is infinity,
input and output terminals with
PCB Trans winding is
cut.
Defective PCB trans.
or PCB.
Check resistance of PCB Trans Replace PCB Trans
PCB to display PCB.
connector.
Reconnect
Measures
and display circuit.
connection.
Visual check on connector
Checks
connection from main
Bad connector
Causes
between Main PCB
Bad connection
LEDS are off.
electric power.
Bad connection
Abnormal
All display
Symptom
Bad PCB
Problems
2-9. Micom
explanation.
circuit in circuit
Refer to display
dispenser.
model with
Applicable to
explanation.
circuit in circuit
Refer to electric
dispenser.
model without
Applicable to
Remarks
TROUBLE DIAGNOSIS
Bad cooling.
Problems
- 118 Faulty defrost.
driving relay.
diagnosis
functions.
function.
Refer to trouble
• Replace fan motor.
explanation.
circuit
refrigerator and
home bar).
driving circuits in
Refer to load
explanation.
circuit
table of sensor in
characteristics
resistance
Refer to
switch (freezer,
• Replace door
wire.
Reconnect lead
sensor housing
Repair main PCB
sensor.
Replace freezer
Refer to faulty defrost items in trouble diagnosis
normal, it is OK.
motor after pressing test switch
home bar).
• Defective fan motor
PCB power blue line and fan
(freezer, refrigerator,
of Main PCB. If the voltage is
Measure the voltage between
• Defective door switch
• Defective fan motor.
with a tester.
is cut.
motor.
housing).
sensor.
Check fan motor lead wire
circuits (main PCB sensor
substituted for other
Fan motor lead wire
Confirm the color of sensor in
Freezer sensor is
Defective freezer fan
sensor with a tester.
sensor parts.
sensor.
Check resistance of freezer
Defective Freezer
explanation.
driving circuit in
voltage is normal.
(RY1) or PCB.
Refer to load
Remarks
circuit
(5&7) after pressing main PCB
driving relay.
Replace relay
Wire.
Reconnect Lead
Measures
test switch once. It is OK if
Measure voltage at PCB CON1
with a tester.
Check compressor Lead Wire
Checks
Defective compressor
is cut.
Compressor Lead Wire
Causes
Defective freezer
not start.
temperature is
high.
Compressor does
Freezer
Symptom
TROUBLE DIAGNOSIS
Bad cooling
Problems
Refer to AC damper in parts
repair guide.
Refer to AC damper in parts
repair guide.
Check AC damper
part.
Check AC damper
Motor driving relay in
Ice formation on AC
- 119 -
Check if refrigerator sensor
is not fixed at cover sensor but
inner case visually.
sensor assembly
condition.
housing.)
sensor.
Defective refrigerator
circuit. (main PCB sensor
substituted for other
refrigerator sensor.
Fix again the
sensor housing.
Repair main PCB
Check the sensor color in the
Refrigerator sensor is
Replace refrigerator
sensor parts.
Check the resistance of
refrigerator sensor with a tester. sensor.
Defective refrigerator
sensor
Box Assembly.
or refrigerator control
Replace AC damper
materials.
Remove foreign
PCB.
Replace relay or
box Assembly.
or refrigerator control
Replace AC damper
wire.
Reconnect lead
Measures
Defective refrigerator
wire is cut with a tester.
Check if AC damper Heater
damper baffles
damper baffles
Check AC damper baffle
visually.
Foreign materials in AC
PCB.
cut with a tester.
and lead wire are cut.
temperature.
reed switch lead wire are
Check if AC damper motor and
Checks
motor and reed switch
Defective AC Damper. Check AC damper
Causes
Refrigerator
Wrong
Symptom
explanation.
table in circuit
characteristic
resistance
Refer to sensor
explanation.
in circuit
driving circuits
motor damper
Refer to single
Remarks
TROUBLE DIAGNOSIS
- 120 -
wire and replace or
pressed.
Disassemble frame display and confirm
visually.
Key is continuously depressed due to
structural interference.
structures.
interfering
Adjust or replace
lead wire.
directly connect bad
button is
key does not
Reconnect lead
Replace door switch.
contact terminal to
display PCB connecting lead wire.
not ring and
display button
Check input wire with a tester.
guide.
Refer to door switch in parts repair
switch with a tester.
Repair lead wire.
sensor.
with a tester.
Check lead wire related to door
Replace defrost
explanation.
circuit in circuit
Refer to display
explanation.
table of circuit
characteristic
resistance
Refer to sensor
explanation.
Check the resistance of defrost sensor
check in circuit
driving conditions
If the voltage is normal then it is OK.
or PCB.
with a tester after pressing main
Refer to load
Remarks
PCB test switch twice.
Replace relay
Wire.
Reconnect Lead
Measures
Check the voltage of CON2
tester.
Check if defrost lead wire is cut with a
Checks
sense even
terminal contact in main PCB and
Buzzer does
does not work.
Key input wire is cut or bad connector
Defective door switch parts.
rings or door
opening alarm
main PCB to door switch.
Defective connecting lead wire from
continuously
Buzzer
Defective defrost sensor parts.
Defective defrost driving relay.
Defrost lead wire is cut.
Causes
Defective
buzzer
Defective
Defrost is not
Bad defrost.
working.
Symptom
Problems
TROUBLE DIAGNOSIS
switch parts.
rings or door
opening alarm
Check lead wire associated with door
- 121 -
coupler IC or PCB.
output terminals with lever switch
Check resistance of parts with a tester.
parts.
Replace defective
dispenser.
Defective parts associated with water
Replace defective
parts.
Replace defective
relay.
relay.
Check relay with a tester
Check resistance of parts with a tester.
Check relay with a tester.
dispense.
Defective relay associated with water
dispenser solenoid).
dispense (geared motor, cube and
Defective parts associated with ice
dispenser solenoid).
dispense (geared motor, cube and
between 0V - 5V.
pressed. It is OK if voltage change is
Replace defective
Replace photo
Check voltage change at photo coupler
Defective photo coupler IC parts.
Defective relay associated with ice
Refer to door switch in parts repair guide. Replace lever switch.
Defective lever switch parts
dispensed.
switch with a tester.
Main PCB to lever switch.
are not
Repair lead wire.
switch.
compartment door
Replace Freezer
Repair lead wire.
dispenser.
Check Lead Wire associated with lever
guide.
Refer to door switch in parts repair
switch.
Ice and water
Defective connecting lead wire from
Defective freezer compartment door
continuously
does not work.
Defective connecting lead wire from
main PCB to door switch.
Buzzer
Bad water/ice
Door Buzzer
pressed.
with dispenser.
Check model
explanations.
button is
Refer to mode
function
Repair troubles
not sense even
Check trouble diagnosis function.
Remarks
indication in
Trouble mode indication.
Measures
but key does
Checks
Buzzer rings
Causes
display button.
Symptom
Defective
Problems
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS
3. Cooling Cycle Heavy Repair
3-1. Features of refrigerant(R600a)
• Achromatic and odor less gas.
• Flammable gas and the ignition (explosion) at 494°C.
• Upper/lower explosion limit: 1.8%~8.4%Vol.
3-2. Features of the R600a refrigerator
• Charging of 60% refrigerant compared with a R134a model.
• The suction pressure is below 1bar (abs) during the operation.
• Because of its low suction pressure, the external air may flow in the cycle system when the refrigerant leaks and it causes
malfunction in the compressor.
• The displacement of compressor using R600a must be at least 1.7 times larger than that of R134a.
• Any type of dryer is applicable (XH-5, 7, 9), but recommend the X7-9.
• The EVAPORATOR or any other cycle part that has welding joint is hidden in the foam. (If not hidden inside, the whole
electric parts must be tested with the LEAKAGE TEST according to the IEC Standard.)
• The compressor has a label of the refrigerant R600a.
• Only the SVC man must have an access to the system.
3-3. Installation place
• Must be well ventilated.
• Must be 20m3 or larger.
• Must be no-smoking area.
• No ignitable factors must be present.
3-4. Utilities
• Refrigerant cylinder (MAX NET 300g)
• Manometer
• Vacuum pump (600L/min)
• Piercing Clamp
• Quick coupler
• Hoses (5m-1EA, 1m-3EA)
• LOKRING
• Portable Leakage detector (3g/year ↓)
• Nitrogen cylinder (for leakage test)
• Concentration gauge
3-5. Make sure before Servicing
• Refrigerant
Confirm the refrigerant by checking Name Plate and the label on the compressor, after opening the COVER ASSEMBLY
BACK - M/C.
• If the refrigerant is R600a, you must not weld or apply a heat source.
- 122 -
TROUBLE DIAGNOSIS
3-6. Practical Work For Heavy Repair
Item
1. Removal of
residual
refrigerant
2. Installed with
a Scharader
valve By
using the
LOKRING.
Precaution
• You must discharge the residual refrigerant
(R600a) in the outdoor.
• For discharging the refrigerant R600a,
break the narrow portion of tube extension
by hand or with a pipe cutter as shown in
Figure.
• Leave if for 30~60min in outside to
stabilize the pressure with ambient.
• Check the pressure by piercing the dryer
part with pierching pliers. If the refrigerant
is not completely discharged, let the
refrigerator alone for more 30min in
outside.
• After the refrigerant is completely
discharged, repair any defective parts
and replace the dryer. At any case you
must use the LOKRING for connecting or
replacing any part in the cycle (No Fire,
No Welding).
Utilities
Pipe Cutter
POINT TO BE
BROKEN
Piercing Pliers
SERVICE TUBE EXTENSION
CHARGE TUBE
EXTENSION
Schrader valve.
LOKRING
SCHRADER VALVE
(ONE-WAY VALVE)
LORKING
3. Vacuum
process
• Connect the Schrader valve to pump with
the coupler. And then turn the pump on
for vacuum state.
• Let the pump run until the low-pressure
gauge indicates the vacuum (gauge
pressure 0, absolute pressure - 1atm or 760mmHg).
• Recommended vacuum time is 30 min.
• Charge the N2 gas in order to check for
leakage from welding points and the
LOKRING.
• If leakages are found, repair the defects
and repeat the vacuum process.
- 123 -
Vacuum pump
LOKRING
TO THE VACUUM
PUMP
Nitrogen
cylinder
Portable
Leakage
Detector
PRESSURE
GAUGE
Manometer
TROUBLE DIAGNOSIS
Item
Precaution
Utilities
4. Recharging
process
• After the system is completely
vacuumed, fill it with the refrigerant
R600a up to what has been
REFRIGERANT
(R600a)
specified at your refrigerator Name
CHARGING HOSE
COUPLE
Plate.
• The amount of refrigerant (R600a)
must be precisely measured within
THEROTLE
the error of ±2g by an electron
VALVE
scale.
WEIGH SCALE
• Connect the charging hose (that is
connected to the refrigerant
(R600a) cylinder) to the Schrader
valve installed on the service tube.
• Then, charge the refrigerant (R600a) by controlling the Throttle valve.
• When you do so, do not fully open the Throttle valve because it may make
damage to the compressor.
• Gradually charge the refrigerant (R600a) by changing open and close the Throttle
Valve (5g at each time).
• The charging hose must use a one-way valve to prevent the refrigerant refluence.
• Close the Schrader valve cap after the refrigerant (R600a) is completely
recharged.
Refrigerant
Cylinder
Hoses
• If you use the manifold connected with both the refrigerant (R600a) cylinder and
the vacuum pump simultaneously, make sure the pump valve is close.
FILLING OR
CHARGE TUBE
VALVE TO BE OPENED
WHEN REFILLING
TO THE REFRIGERATION
SYSTEM
TO THE CHARGE
CYLINDER
VALVE TO BE CLOSED
AFTER VACUUM
TO THE VACUUM PUMP
5. Leakage
Test
• After you completely recharge the refrigerant (R600a), perform the leakage test by
using a portable leakage detector or soapy water.
• Test the low pressure (suction) parts in compressor off time and high pressure
parts in compressor on time.
• If the leakages are found, restart from the refrigerant (R600a) discharging process
and repairs defects of leaks.
6. Cycle Check
• After the leakage test, check the temperature of each parts of the cycle.
• Check with hands if the CONDENSER and the case (HOT-LINE pipe) that is
contacted to the door gasket are warm.
• Confirm that frost is uniform distributed on the surface of the EVAPORATOR.
- 124 -
Portable
Leakage
detector
TROUBLE DIAGNOSIS
3-7. Brazing Reference Drawings
1) Asia / Middle-East Africa
Copper Brazer
CAPI - TUBE
PIPE ASSEMBLY
HOT LINE
(Refrigerator)
PIPE ASSEMBLY
HOT LINE
(Freezer)
Copper(Silver)
Brazer
DRIER ASSEMBLY
Copper(Silver)
Brazer
PIPE ASSEMBLY SUCTION
Silver Brazer
PIPE ASSEMBLY JOINT
Copper
Brazer
PIPE ASSEMBLY
JOINT
Copper Brazer
Copper Brazer
CONDENSER ASSEMBLY WIRE
Silver Brazer
Coppper Brazer
2) Europe & CIS / America
PIPE ASSEMBLY HOT LINE
(Freezer)
Copper Brazer
CAPI - TUBE
Copper(Silver)
Brazer
DRIER ASSEMBLY
Silver Brazer
PIPE ASSEMBLY SUCTION
PIPE ASSEMBLY JOINT
Copper
Brazer
Copper Brazer
PIPE ASSEMBLY
JOINT
Copper Brazer
- 125 -
Coppper Brazer
CONDENSER ASSEMBLY WIRE
Silver Brazer
TROUBLE DIAGNOSIS
4. HOW TO DEAL WITH CLAIMS
4-1. Sound
Problems
"Whizz" sounds
Checks and Measures
■ 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.
■ 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.
■ 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
■ 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
■ 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
■ 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.
■ 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.
- 126 -
TROUBLE DIAGNOSIS
Problems
Checks and Measures
Sounds of water flowing
■ 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
■ 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
■ Explain the procedure and principles of ice maker operation.
(applicable to model with ice maker).
• Automatic ice maker repeats the cycle of water supplying ➝ icemaking ➝ ice
- Noise produced by ice dropping
ejection. When water is supplied, the water supply valve in the machine room
and hitting ice bank.
makes sounds like “Whizz” and water flowing also makes sound. When water
- Noise from motor sounds “Whizz”.
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 when supplying water.
■ 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.
■ 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.
- 127 -
TROUBLE DIAGNOSIS
4-2. Measures for Symptoms on Temperature
Problems
Checks and Measures
Refrigeration is weak.
■ 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
■ 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.
■ 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.
Ice cream softens.
■ 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.
■ 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.
■ 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”.
■ 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.
- 128 -
TROUBLE DIAGNOSIS
4-3. Odor and Frost
Problems
Odor in the refrigerator compartment.
Checks and Measures
■ 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.
■ 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
■ 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.
■ 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.
- 129 -
TROUBLE DIAGNOSIS
4-4. Others
Problems
Checks and Measures
The refrigerator case is hot.
■ 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
■ 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 .
Electric bills are too much.
■ 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.
■ 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?
■ 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.
■ 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.
■ 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.
■ 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.
■ 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.
- 130 -
HOW TO DISASSEMBLE AND ASSEMBLE
(3) Disconnect upper hinge from a hinge supporter 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. DOOR
1) Remove lower cover and remove clip then
disconnect water supply tube in the lower part
of freezer door.
• Pull a water supply tube forward while pressing part
to disconnect water supply tube as shown below.
1
2
A
A
B
1
2
(4) Lift up the freezer door in arrow direction and
disconnect the door from the lower hinge . Don’t pull
a door forward.
2) Remove a freezer door.
(1) Loosen hinge cover screw of freezer door and remove
cover.
Disconnect all connecting lines except earthing cord.
Cover, Hinge
Connecting
2 Line
1
2
Earthing
Cord
(2) Turn hinge lever in arrow A direction until it is
loosened and take it out in arrow B direction.
Lever, Hinge
Note : • Lift up a freezer door until a water supply tube is
fully taken out.
(5) Assembly is the reverse order of disassembly
A
B
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.
- 131 -
HOW TO DISASSEMBLE AND ASSEMBLE
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.
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. HANDLE
1) Put blade screwdriver into a groove on the side of a
Deco handle and lift up a little bit in arrow direction
and push up with hand in arrow direction and
disconnect.
2
1
4. ICEMAKER ASSEMBLY
Handle, Deco
1. Dispenser Model
3
1) How to disassemble:
(1) Remove ice bank from the freezer compartment.
(2) Loosen two screws on the upper part of icemaker
bracket.
(3) Disconnect icemaker bracket so that it can slide
forward.
(4) Disconnect icemaker housing and sensor housing.
(5) Disconnect icemaker horizontally by pressing bracket
hook part. ( Don’t disassemble further. The set value
may be changed.)
2) How to assemble : The assembly is the reverse order of
the above disassembly.
4
2) Put blade screwdriver into a groove on the side of a
DECO handle and lift up in arrow direction and push
down with hand in arrow direction and disconnect.
3) Push up a piece handle in arrow direction with hand
and disconnect.
4) Turn screw in arrow direction with a cross driver and
disconnect.
Bracket, Ice Maker
Hook
Screw
Ice Maker Unit
Handle, Piece
Lever
Tray, Ice
Insulation
Sensor
3. SHROUD, GRILLE FAN
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.
Cover, Sensor
Note : When the ice tray is not horizontal after assembly,
assembly must be wrong. Check and assemble
again.
- 132 -
HOW TO DISASSEMBLE AND ASSEMBLE
5. DISPENSER
1) Disconnect button assembly by pulling down until it
stops and then pulling forward.
4) Loosen four screws with a phillips screwdriver and pull a
funnel Assembly to disconnect.
Funnel Assembly
Funnel
Assembly
Button
5) Duct cap Assembly is disconnected if hold lever
connecting screw is loosened with a phillips screwdriver.
2) Remove display frame Assembly by making a gap
between a display frame Assembly. and funnel
Assembly. with a balde screwdriver and pulling it
forward. The cover dispenser is fixed with a hook.
Solenoid Assembly
Holder
Lever
Cap Assembly,
Duct
3) Display Assembly can be disconnected by pressing the
upper part of a cover dispenser and pushing a display
Assembly. after disconnecting display frame Assembly
housing.
6) For assembling a duct cap Assembly, insert one end of
a spring into the right hole of dispenser lever, and insert
the other end into the right hole in upper part of
dispenser. And then assemble a holder lever after fixing
a holder at a solenoid Assembly working part.
Heater, Sheet
Spring
Lever,Dispenser
Solenoid Assembly
- 133 -
HOW TO DISASSEMBLE AND ASSEMBLE
7) Dispenser Related Parts
7
10
8
9
17
15
14
11
16
1
FRAME ASSEMBLY, DISPLAY
2
COVER, DISPENSER
3
FRAME, DISPLAY
4
BUTTON, DECO
5
BUTTON, ASSEMBLY
6
PWB(PCB) ASSEMBLY, DISPLAY
7
FUNNEL ASSEMBLY
8
SWITCH, MICRO
9
FRAME, FUNNEL
10 LEVER(SWITCH)
24
6
11 FUNNEL
5
12 DECO, FRAME DISPLAY
4
14 SOLENOID ASSEMBLY
12
15 SPRING
3
23
22
16 HOLDER, LEVER
17 CAP, DUCT ASSEMBLY
21
1
2
18 DUCT DOOR ASSEMBLY
19 LEVER, DISPENSER
20 RUBBER, CAP
21 BUTTON ASSEMBLY
22 BUTTON
19
23 HOLDER, BUTTON
24 DECO, DRAIN
21
18
< 17 Cap Assembly, Duct Detailed Drawings>
- 134 -
HOW TO DISASSEMBLE AND ASSEMBLE
6-2. Home Bar parts disassembly and assembly
6. HOME BAR
6-1. Home Bar related parts
1
11
10
9
8
1) Disconnect H/Bar Door Assembly .
2) Loosen two screws attached on the refrigerator
compartment door with a phillips screwdriver. And
loosen 4 screws and two screws . Pull H/Bar door
Assembly . forward to disassemble.
3) Loosen two screws , fixed on H/Bar door
Assembly. and two screws
with a cross driver to
disassemble arm Assembly.
4) Assemble parts by performing the disassembly in
reverse order.
11
5
9
7
6
8
7
10
Note : • Assemble carefully parts , ,
until they are
fixed firmly when assembling them.
• Adjust exterior gap by adjusting parts , and
when assembling.
2.0
6
4
3
1 DOOR ASSEMBLY, H/BAR
7 SCREW TAP TITE(ARM)
2 SEREW, TAP TITE(HINGE-H/B)
8 ARM ASSEMBLY
3 SCREW MACHINE(HINGE-H/B)
9 STOPPER
4 HINGE ASSEMBLY H/BAR
10 SCREW, MACHINE(STOP ARM-H/B)
5 HINGE ASSEMBLY H/BAR
11 SCREW MACHINE(HINGE-H/B)
2
3.5
2
6 CAP, ARM
- 135 -
EXPLODED VIEW
FREEZER DOOR PART: GC-P207, GC-L207
* : Optional part
200A
206B
202A
205A
206A
205C
210A
205D
205F
210B
210C
205G
205B
210C
201A
203A
- 136 -
EXPLODED VIEW
FREEZER DOOR PART: GC-C207, GC-B207
* : Optional part
200A
206B
202A
205A
206A
205C
210B
205F
205D
210B
210B
205G
205B
210C
210C
201A
203A
- 137 -
EXPLODED VIEW
Ref No. : GC-P207, GC-C207
REFRIGERATOR DOOR PART
* : Optional part
241C
230A
241A
240A
*
241B
243A
*
*
147B*
236A
147C
260A
232A
147A
243A
239A
*
206B
240A
260B
*
205A
205F
264B
260C
205C
402B
266C
262A
617A
266A
261A
265A
267A
264C
251A
243A
264A
*
205D
240B
*
267A
243A
*
266B
266C
265A
240B
*
263A
205G
263B
266B
231A
240C
250A
205B
240C
- 138 -
233A
EXPLODED VIEW
Ref No. : GC-L207, GC-B207
REFRIGERATOR DOOR PART
* : Optional part
241C
230A
232A
236A
241A
241B
*
147B*
147C
240A
243A
*
239A
206B
*
205A
147A
243A
240A
*
240B
*
*
205C
243A
*
205F
243A
240A
205D
*
*
205G
240C
205B
231A
233A
240C
- 139 -
EXPLODED VIEW
FREEZER COMPARTMENT
* : Optional part
131B
*
131J
131A
154A
101A
*
131E
270A
131B
271B
271A
137B
131H
137A
136D
136C
131D
132A
403A
402A
131C
136B
136A
152A
135A
*
120D
316B
*
120D
302B
401A
128C
128D
130A
*
120B
128E
*
120B
400A
128F
120B
120B
272A
103A
120C
408A
135B
105B
125A
312A
126A
- 140 -
EXPLODED VIEW
REFRIGERATOR COMPARTMENT
* : Optional part
140A
*
141A
146B
141B
101B
171A
270B
171B
271B
146A
271C
*
626C
*
626B
*
626A
115A
170A
140A
116A
151F
142A
115B
142C
142D
402B
142B
*
151A
142D
152A
166B
624C
151C
*
151B
177A
*
*
166A
166C
177B
162A
*
155A
166C
166B
401A
150A
166A
165A
*
*
165A
162B
166E
167A
272B
*
166E
*
167A
165A
161A
103A
*
166M
165A
166G
624A
504A
*
624A
180B
180A
180C
180D
120E
168A
- 141 -
160A
EXPLODED VIEW
ICE & WATER PART
* : Optional part
622A
*
625A
618A
616E
*
616F
*
616G
*
616D
*
623A
*
627A
624B
623A
or
623B
*
619A
404A
*
619A
612A
612C
*
600A
610A
607A
612B
611B
611D
602A
605A
604A
603B
601A
603A
404B
613A
621B
614A
606A
- 142 -
EXPLODED VIEW
MACHINE COMPARTMENT
* : Optional part
406A
502A
407B
407A
505A
*
*
*
303A
500A
303B
502B
303C
304A
303D
313A
300A
310B
307A
317A
307A
301A
317B
104A
306A
308B
309A
309B
305A
403B
310A
309C
305B
305C
308C
308A
305C
305B
- 143 -
EXPLODED VIEW
DISPENSER PART
277A
278A
278C
402C
278B
276A
275A
405A
275D
278G
276B
401C
275C
275B
281A
501A
280B
280E
279C
280C
280A
280D
279B
207A
279A
- 144 -
P/No. 3828JS8046J
NOV., 2005 Printed in China
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