LG LRSP2031BS User Manual REFRIGERATOR Manuals And Guides L0301007

LG Side by Side Refrigerator Manual L0301007 LG Side by Side Refrigerator Owner's Manual, LG Side by Side Refrigerator installation guides

User Manual: LG LRSP2031BS LRSP2031BS LG REFRIGERATOR - Manuals and Guides View the owners manual for your LG REFRIGERATOR #LRSP2031BS. Home:Kitchen Appliance Parts:LG Parts:LG REFRIGERATOR Manual

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WARNINGS

AND PRECAUTIONS

Please observe the following safety precautions in order to
use safely and correctly the refrigerator and to prevent

FOR SAFETY

Do not fray, damage, machine, heavily bend, pull out,
or twist the power cord.

accident and danger during repair.
g.

1. Be care of an electric shock, Disconnect power cord
from wall outlet and wait for more than three minutes

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.

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
2. When connecting power cord, please wait for more than
five minutes after power cord was disconnected from the
wall outlet.

confirm the operation of geared motor.
11. Do not let the customers repair, disassemble, and
reconstruct the refrigerator for themselves. It may
cause accident, electric shock, or fire.

3. Please check if the power plug is pressed down by the
refrigerator against the wall. If the power plug was
damaged, it may cause fire or electric shock.

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

4. If the wall outlet is over loaded, it may cause fire, Please
use its own individual electrical outlet for the refrigerator.

13. Do not put flower vase, cup, cosmetics, chemicals,
etc,, or container with full of water on the top of the
refrigerator.

5. Please make sure the outlet is properly earthed,
particularly in wet or damp area.
6. Use standard electrical components when replacing
them.

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

7. Make sure the hook is correctly engaged,
Remove dust and foreign materials from the housing
and connecting parts.

15. When you scrap the refrigerator, please disconnect the
door gasket first and scrap it where children are not
accessible.

-3-

PARTS IDENTIFICATION
3. Ref No. : GR-L247ER,

GR-L207ER
Cover Hinge

Cover PWB

Frame Display

Dispenser Lamp

Dispenser Button

Freezer
Compartment

Refrigerator
Compartment
f

Milk product corner

Door rack
Shelf
J

ice maker

Door rack
(optional)
Box
drawer

Shelf
(Steel,
TIGlass)
Shelf

Drawer
or Shelf
(optional)

rack

drawer/Meat
Lower Cover

Conversion Switch
(MeatsNegetables)

-14-

Humidity Switch

drawer

HOW TO INSTALL REFRIGERATOR
1. How to Adjust

Door Height of Refrigerator

• Make the refrigerator levelfirst. (If the refrigerator is not installed on the flat floor, the height of freezer and refrigerator
door may not be the same.)
1. If the height of freezer door is lower than that of
refrigerator compartment :

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

Height
Difference'

Height
Difference

Insert a driver 0 into the groove O of adjusting screw

Insert a driver 0 into the groove O of adjusting screw
and rotate driver in arrow direction (clockwise) until the
refrigerator becomes horizontal.

and rotate driver in arrow direction (clockwise) until the
refrigerator becomes horizontal.

-18-

HOW TO INSTALL REFRIGERATOR
2. How

to Install

Water

2-1. When connecting

Pipe

• Before Installation

directly to the water tap.

• Please confirm the following

installation parts,

1. The icemaker requires the water pressure of 1.5
8.5kgf/cm 2. (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/cm 2 for normal operation of water and ice
dispenser.
Valve Feed

3. The total length of water pipe shall be less than 12m, Do

Rubber, Packing

Connector, Pipe

not bend the pipe at right angle. If the length is more
than 12m, there will be troubles on water supply due to
water pressure drop.
4. Please install water pipe where there is no heat around.
Connector, Pipe

Class,

Shape and Spec.

Nomenclature

Tape, Teflon

P/No

Convertible
Water
Valve

Valve Feed

Water
Connector

Connector,(MECH) Pipe
ConversionConnector(3/4")
BalanceCenector(3/4")
Packing(e24x3t)

4932JA3003A
6631JA3004A
6631JA3004B
3920JA3001B

4932JA3003B
ConversionConnector(W25)
BalanceConectoor(W25)
Packing(e23x3t)

6631JA3004C
6631JA3004D
3920JA3001A

Connector,(MECH) Pipe
ConversionConnector(W28)
BalanceConector(W28)
Packing(e26x3t)

4932JA3003C
6631JA3004E
6631JA3004F
3920JA3001C

Connector,(MECH) Pipe
ConversionConnector(I/2")
BalanceConector(1/2")
Packing(e19x3t)

4932JA3003D
6631JA3004G
6631JA3004H
3920JA3001D

Connector, (MECH) Pipe

-19-

5221JA3001A

Remarks
Common Use

No Holes

HOW TO INSTALL REFRIGERATOR
1. Connection of Pipe Connector A and B.

Caution

1) Turn off main valve of water pipe.

: • Feed pipe should be connected to cold water
line. If it is connected to hot water line, trouble
may occur,

2) Disconnect water tap from piping by loosening nuts,

• Please check rubber packing when connecting
feed pipe.

3) Connect pipe connector A and B to piping after sealing
the pipe connector with sealing tapes.
4) Connect feed valve to pipe connector A.
5) If there is only one tap water pipe, connect pipe
connector A only and install feed pipe.

Single Lever Type Faucet
(general)

General Type

Two Hands Type Faucet

Single Lever Type Faucet (one
hole, tech type and hand spray)

Pipe Connector B
\\

Valve

How to wind
Sealing Tapes.

Feed
Valve

2. Water Supply
1) After the installation of feed water, plug the refrigerator
to the earthered wall outlet, press the water dispenser
button for 2 - 3 minutes, and confirm that the water
comes out,

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

Water Tube

Nut

- 20 -

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) Connect feed tube to the filter outlet and water valve connecting tube.
2) Fix the filter at proper place around the sink where it is easy to replace the filter and to receive the cleaning water.
Please consider the length of tube shall be less than 12m when locating filter.
3) When fixing the filter, use fixing plate and cable depending on the surrounding

conditions.

Inlet

Water Tube
Nut

FixingPlate

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,

Water

-21 -

Feed Valve

HOW TO INSTALL REFRIGERATOR
• Install Water Filter (Applicable to some models only)
• Before Installing water filter

Control box

1. Before installing the filter, take out the top shelf of the
refrigerator after tilting it to the direction (Q) 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.
Aligning with the guide line
and the fastening indication line

[11

_'J_

IIl

IIJ

• Installing water filter
1. Initial installation of water filter
Remove the filter substitute cap by turning it
counterclockwise ((D) by 90 degrees and pulling it down.

Contro,
box

Aligni_lgwith the guide line
and the loosening indication line

• After installing water filter
Reassemble the lamp cover and the top shelf of the
refrigerator. To place the top shelf of the refrigerator, raise
the front part of the shelf a bit so that the hook of the shelf
is fit into the groove.
In order to clean the water filter system, drain water for
about 3 min.
Note : Then open the door of the refrigerator and check for
water droppings on the shelf under the filter.

Note : Keep it safe to use it later when you do not use the
filter.
Remove the red cap from the filter and attach the
sticker. Insert the upper part of the filter ((!)) after
aligning with the guideline marked on the control box,
and fasten it by turning it clockwise by 90 degrees.
Note : Check that the guideline and the fastening
indication line are aligned.

Substitute
ap
Separation _ _
of red cap____

_Aidchkes'i°n

2. Replacement of water filter
While holding the lower part of the filter, turn it
counterclockwise ((D) by 90 degrees and pull it down.
Note : Check that the guideline and the loosening
indication line are aligned.

- 22 -

HOW TO INSTALL REFRIGERATOR
3. How to Control

the Amount

of Water Supplied

to lcemaker.

3-1. Confirm the amount of water supplied to the icemaker.
1, Pull out the ice bank in the upper part of the freezer compartment.
Caution

: • Do not put hands or tools into the chute to confirm
the operation of geared motor.
it may damage refrigerator or hurt hands.)
• Check the operation of motor with its operation
noise.

2. Apply electricity after connecting water pipe.
1) Press test switch under the icemaker for two seconds as shown below.
2) The bell rings(ding-dong)

and ice tray rotates and water comes out from the icemaker water tube.

3) The water shall be supplied two or three times into the tray. The amount of water supplied for each time is small.
Put a water container under the ice tray and press test switch.
4) When ice tray rotates, the water in it will spill. Collect the spilt water and throw away into the sink.
5) When ice tray has finished rotation, water comes out from the water tube. Confirm the amounts of water in the ice tray.
(refer to fig. The optimum amount of water is 110cc)

Confirm the amount
of water

Pq
ice maker

Test Switch
_-"
-..

Too much
-.
-Optimum level )
-- _oo _lL_e
,,

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

- 23 -

HOW TO INSTALL REFRIGERATOR
3-2. Control the amount of water supplied to the
icemaker.
Caution

Caution

: When adjusting the amount of water supplied,
adjust step by step. Otherwise the water may
spill over.

: • Please unplug the power cord from the wall
outlet and wait for more than three minutes
before disconnecting PWB cover as 310V is
applied in the control panel.

1. Disconnect PWB cover from the upper part of the
refrigerator.

Switch ON
Switch OFF

(+) Driver
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

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

• Water Supplying

Time Control

SWITCH NO

Option
Water Suppling

StWl

S/W2

S/W3

Time

OFF

6.5 Sec.

OFF

5.5 Sec.

OFF

6 Sec.

OFF

7 Sec.

OFF

7.5 Sec.

OFF

8 Sec.

OFF

9 Sec.

10 Sec.

"--~

1) The water supplying time is set at five seconds when the
refrigerator is delivered.
2) The amount of water supplied depends on the setting
time and water pressure (city water pressure).
3) If ice cube is too small, increase the water supplying
time. This happens when too small water is supplied into
the ice tray.
4) If ice cube sticks together, decrease the water supplying
time. This happens when too much water is supplied
into the ice tray.

- 24 -

Optimum level

MICOM FUNCTION
1. Monitor

Panel

1-1. GR-P247, GR-P207, GR-L247, GR-L207

1-2. GR-C247, GR-C207, GR-B247, GR-B207

Function Monitor

®®

Freezer compartment
temperature control Button

2. Description

®..

4
Q

3
Q

2
Q

1
Q

Min

1
D

2
D

3
D

4
D

5 Max
D

\_\

Refrigerator compartment
temperature control Button

Dispenser selection button

of Function

2-1. Funnction of Temperature Selection
Division

Power Initially On

1st Press

2nd Press

3th Press

4th Press

Temperature
Control

Medium

Medium Max

Max

Min

Medium Min

Freezer
Control

-19 °C
(-18 °C)
<-19 °C>

-22 °C
(-20.5 °C)
<-20.5 °C>

-23 °C
(-22 °C)
<-22 °C>

-15 °C
<-16.5 °C>

-17 °C
<-18 °C>

3 °C
<2 °C>

1.5 °C
<1 °C>

O°C

6 °C
(7 °C)
<4.5 °C>

4.5 °C
<3 °C>

Change of
Indication Lamp

Refrigeration
Control

* The temperature

call

valy _3 °(

depending

tile load condition.

) : 127V/60Hz, t t0~115V/60Hz, 115V/60Hz Rating
*< >: TAIBEI
*(

ONLY.

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
following sequence:
"Medium" , "Medium Max" , "Max" .'"Min"
, "Medium Min" , "Medium"

is pressed, the light is on in the

3. The temperature setting condition of freezer and refrigerator compartments shall not be indicate in the standard model
(GRIP247, GRIP207, GR_L247, GR-L207, GR-C247, GR_C207, GR-B247, GR-B207) when refrigerator or home bar
door is closed.

- 25-

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.

- 26 -

MICOM FUNCTION
2-4. 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).

2-5. Control

of M/C room fan motor

1. The M/C room fan motor performs ONIOFF 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).

2-6. Door opening

alarm

1. Buzzer generates alarm sound if doors are not closed even when more than a minute consecutively
doors of freezing / cold storage room or home bar opened,

has passed with

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
or home room
bar

r_l

C_Openin_

I Closing

Opening
3Times3Times3Times3Times

BUZZER
H

Within
a minute

A minute

: 30 i 30 i 30
seconds
secondsseconds

2-7. Ringing of button selection buzzer
1. If pressing the front display button, "Ding -" sound rings.

2-8. 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,
0.2 second, On for 0.2 second and Off for 1.4 second three times.

- 27-

Off for

MICOM FUNCTION
2-9. 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).

2-10. 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
When temperature
of a frost removal
sensor becomes
morethan 25°0
(In purchase,
movement)

__
"_-

_--

When
temperature of a
frost removal
sensor becomes
Iess than 25°0
(In power failure,
service)

Load Operation Sequence

POWER

0.5
sec

03
sec

STEP
MOTOR
DAMPER
ON

03
sec

HOME
BAR
HEATER
ON

05
FROST
8
FROST 03
sec REMOVAL sec REMOVAL sec
HEATER
HEATER
ON
OFF

HOME
BAR
HEATER
ON

5
sec

HOME
BAR
HEATER
OFF

03
_sec.

F-FAN
&
C-FAN
ON

03
sec

STEP
MOTOR

POWER
ON

COMP
ON

e
03 WATER
_ec TANK
HEATER
ON

0.3
sec

5
WATER
_sec.
TANK
HEATER
OFF

F-FAN
&
C-FAN
ON

Remark

WATER
03 SUPPLY
5
&
_sec.
_sec.
DISPENSE
HEATER
ON

COMP
ON

Test mode 1
(Compulsory
function)
m

o
m

TEST
S/W
(Press
Once)

OTHER
LOAD
OFF

0.3
sec
_

COMP
ON

03
sec
_

F-FAN
&
C-FAN
ON

DAMPER
OPEN

Test mode 2
(Compulsoryfrost
removal)

TEST
S/W
(Press
2 times)

COMP
OFF

0.3
sec.
_

F-FAN
&
C-FAN
OFF

- 28 -

0.3
FROST 0.3
STEP
sec.
_
REMOVAL %
MOTOR
HEATER
DAMPER
ON
CLOSE

If error occurs
during operation,
initialoperation is
not done.

If pressing switch
once more in the
test mode 2 or
temperature of a
frost removaI
sensor is more
than 5°C, it
immediately
returns to the test
mode for initial
operation
(COMP operates
after 7 minutes).

MICOM FUNCTION
2-15. Failure

Diagnosis

Function

1. Failure diagnosis function is function to facilitate service when nonconforming matters affecting performance of product
during use of product.
2. In occurrence of failure, pressing the function adjustment button does not perform function and only alarm sound ("Ding-") rings.
3. If nonconforming matters occurred are released during display of failure code, MICOM returns to the original state (Reset).
4. Failure code is displayed on the display part of setting temperature for the freezing room and the display part of setting
temperature for the cold storage room of LED, which are placed at the display part of a refrigerator. All the LED graphics
other than a failure code are turned off.

GR-B(C)207,247*CA

G R-P(L)207,247.RA(O.A)

TROUBLE CODE INDEX
r

K_7

F4 F3 F2 F1
Max !S
LI

4 3 2]l_M_n
i i mllmj

1_2
_l

_ 4 N Max
• B B

-_Trouble
CodeIndicator
No,

Trouble items

sensorAbn°rmal
freezer(F) •

Abnormal
refrigeratorsensor
I(Rf) (upper shelf
in the refrigerator)

Abnormal
refrigeratorsensor
2(R2) (lower shelf in
the refrigerator)

Abnormaldefrost
sensor

Faultydefrost

F2 Ff

•

•-_6-

•-¢-

•

Note 1)

•

_A_ •
Y

•

_¢__¢___¢_
6

_¢_ •

•

_¢_

•

_1(_¢_

©:Normal

Freezer
Fan

Cooling
Fan

Defrost
Stepping
Heater Motor
Damper

Standard

RPM

Lowershelf refrigeratorsensor is
cut or short-circuited.

Standard
RPM

Defrostsensor is cut or shortcircuited

Standard
RPM

No defrost

Defrostheater andtemperature

Standard

RPM
O

fan motor operate

0FF(ch_
@eat;®per
30mi_7,
_fn0rmal
c0ndr_®,
reset}

No position-signalover 65s when
•

:Off

115
minoff5
rainon/ StandardRPM ©

cut or short-circuited.

No position-signalover 65s when

Abnormalcooling
BLDCfan motor

circuitedFreezer
sensor is cut or short-

fuse
are cut andatdisconnected.
(Indicatesafter
least four hours
when troublesoccur)

Abnormalfreezer
BLDCfan motor

Compressor

Uppershelf refrigeratorsensor is
•

•

Operation Status DuringTrouble
Troubles

:On

fan motor operate

0FF(ch_
@eat;®per
30mi_7,
_fn0rmal
®ndr_®,
reset}

Abnormalroom
temperaturesensor

Note 1)

Roomtemperaturesensor (RTSensor) is cat or short-circuited.

Abnormalicemaker
sensor

Note 1)

Icemakersensor is cut or shortcircuited.

Abnormalicemaker
unit

Note 1)

Faultymotor or hall IC in
icemakerunit. Leadwire is cut or
shotr-circuited.Faulty motor
driving circuits

Standard
RPM

- 29 -

MICOM FUNCTION
Note1) The abnormality of RT-Sensor, R2-Sensor Icemaker Unit, and Icemaker-Sensor is not indicated in trouble code but it
is indicated when checking LED (when pressing both freezer temperature control button and refrigerator temperature
control button for more than 1 second at the same time).
RT-Sensor

Normal : (_

LED on,

Abnormal : (_) LED Off.

R2-Sensor

Normal : _)

LED on,

Abnormal : (_ LED Off.

Icemaker Unit

Normal : (_

LED on,

Abnormal : (_ LED Off,

Icemaker Sensor

Normal : _)

LED on,

Abnormal : (_) LED Off.

The rest of LEDs
are all on.

2-16. Test Function
1. The purpose of test function is to check function of the PCB 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 net 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
display the failure code.

of test mode, release the test mode and

6. Even if pressing the test button during failure code display, test mode will not be performed.
MODE
Test 1

HANDLING
Press TEST s/w once.

CONTENTS
1. Compressor continuously

REMARKS
operates.

2. Freezer fan (high speed RPM), Cooling fan
continuously operates.
3. Defrost heater is off,

- Forced operate.
- Freezer fan is off when
door is opened.

4. All display LEDs are on.
5. Stepping motor damper is in open
conditions. (baffle is open)
Test 2

Press TEST s/w once at
TEST1 conditions.

1. Compressor is off
2. Freezer fan, Cooling fan are off.
3. Defrost heater is on.
4. All display LEDs are off. (Freezer room "2"
LED and Refrigerator room "2" LED are

- It returns to normal
conditions when the
temperature of defrost
sensor is above 5°C.
- Forced defrost.

only ON.)
5. Stepping motor damper is in closed. (baffle
is closed).
Normal
Conditions

Press TEST s/w once at
TEST2 conditions,

Returns to the initial conditions.

- 30 -

Compressor starts after
seven minutes delay.

EXPLATION
1. Explanation

FOR MICOM CIRCUIT

for PWB circuit

%1. Power circuit
1, GR-L207ERA,

GR-L247ERA,

GR-B207ERA,

Power circuit consists of SMPS (SWITCHING

GR-B247ERA

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

BDI
RVB

CE1 Vdc
inspection

CE2
16
Vdc

1506

]RANS

1 F

CE3

CE4

12 Vdc

15.5 Vdc

5 Vdc

• I0

_3o2

÷
/

FBI

2 I

FRI02

I<_
R1
15DK,1W

I_
<,R4

IOOUF

K %

5 i
I
I

C 2

"_7K

•

+
+

,>>RF2KF

;

CO+

IC1
(MICOM)

2 4 00v

CE3
BS(]uF
/2_V

R_KF

CON1
L1

VAI
_INR

4C7
cl]

08RQlC_<"

5£

VDO
V_]ref

Vss
Wss
_ST
GNO
43,48,51

pOWER

-31 -

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.

XIN

(MICON

XIN

ICI
(HICON)

XOUT

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).

[C1
(MICOP1}

_T_
_" 4
t 104
CCIO
f717

_ml
_4,7K
•CC8
m[7104

- 32 -

[Cl
(NICON
29
RESET

EXPLATION
1-4. Load/dispenser

FOR MICOM CIRCUIT

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.
1) GR-L207ERA,

GR-L247ERA

Type of Load

COMP

Frost Removal
Heater

Measuring part (IC6)

No. 16

No. 15

Status

AC Converting
Relay

No. 16

Within 1 V

OFF

12 V

R-room LAMP

Water Tank
Heater

IC7-13

IC7-14

IC1

pOWER

CON2

(HICDH)
P73

COMP

(AIN13)

DDDR

RY2
JWlaFHN

S _7
PTC ASST

DEF HEATER
P72
(AIN12)

CON5
RY6
ALD112

P76
(AIN16)

_4/TANK HEATER
H/BAR
DDDR S/'d

R I]DDR

S/'d

CON4

IC7
_k_OO3AP

RY9
OH]
Q
D]3

R LAMP

P01

CON5
RY12

H/BAR

_G5S

HEATER

D16
]A
PO#

- 33 -

EXPLATION

FOR MICOM CIRCUIT

2) GR-B207ERA, GR-B247ERA
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

Measuring part (IC7)

No.10

Status

Frost Removal
Heater

No.ll

AC Converting
Relay

R-room LAMP

Homebar
Heater

No.12

No.14

No.16

Within 1 V

OFF

12 V

POWER

IC1
CON2
_UNNNG CAPADFOR
COMP

P.TC AS_

DEF

H/B4R
BBBR S/W

HEATER

R _UUR
S/W

CON3

P03

LAMP 4

P06

- 34 -

EXPLATION

FOR MICOM CIRCUIT

2. Dispenser operation circuit

POWER

RY4
JWl oF74N

CON5
AUGER MOTOR
RY'a
ALD112

SOLENOID
CUBE

DISPENSER
LEVER S/W

IC7

CON4
RY7
ALD112
9

Oll

ICE
I
WA_R

_D65003AP
I

RY8
ALS112
D12
15

"00

CRI

CONE

IC1
(NICDN}

RYIO
ALDll2
SOlYNOID
DISPENSER

"02

RYII
ALDI12

PILOT

VALVE

"03

"05
OlSP

LAMP

_@O7

_41€8

1) Check load driving status
WATER VALVE
Type of Load

Measuring part
Status

GEARED
MOTOR

SOLENOID
CUBE

IC6-No.13

IC6-No.12

ICE

WATER

IC6-No.ll

IC6-No.10

Within 1 V

OFF

12 V

SOLENOID
DISPENSER

HOMEBAR
HEATER

No.12

No.10

2) Lever S/W sensing circuit
_ing
LeverS/W

part

ICl(Micom)

On(Press)

(No. 16)

(60 Hz)
0

OFF

- 35-

SOLENOID
PILOT

No.16

EXPLATION

FOR MICOM CIRCUIT

3. Door opening sensing circuit

P47

ICI
(NICOM)

Q_
R62

C]06M

P5;
P52

R4.*

51 " _TKF

C] D6M

_v_

CONDITIONS
_
MEASURING_
POINTS
_-_

Bell sounds when button on
dosplay is pressed,
,O.05s,, 0.2s ....,0.1s,
--

0.4s

Beep sounds when warning
door opening.
,j
"'

!.,

0 V

0.5s

OFF

,.!., 0.5s
5V

IC1 (No. 48 Pin)
0V

--,

5V
IC1 (No. 51 Pin)

CON5

CON7

F OOOR S/W

F 0OOR S/W

104_

H/_AR

_C21_

DOOR S/W

R OOOR S/W

Measuring part
IC1 (MICOM) No. 47, 46 Pin
Door of Freezing/ColdStorage Room
Closing

5 V ((_)- _3), (_

(_.

S/W at both ends are at Off status)

Opening

5 V ((_)_ _), (_

(_.

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.

- 36 -

EXPLATION

FOR MICOM CIRCUIT

1-5. Temperature sensing circuit
1) GR-L207ERA, GR-L247ERA

RF1
P66 62
(AIN6)

R30

_,_

C 4I
P65
(AIN5)

CON7
F SENSOR

16.2KF

C015_

SENSOR

zcl
CON8
58

RSO
C022 2

P65

R1 SENSOR

vv\
2X

R51

o023i

(41N3)

R2 SENSOR

104

CON9
P64

R92

(AIN4)

CC24
104

ICE

P67
(AIN7)

NAKER

SENSOR

CC12_

SNR

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 (_ Voltage

Frost removal sensor

POINT (_) Voltage

Cold storage sensor 1

POINT ©

Cold storage sensor 2

POINT 1_ Voltage

Ice making sensor

POINT 1_) Voltage

Room temperature sensor

POINT 1_ Voltage

Voltage

- 37 -

NORMAL(-30 °C ~ 50 °C)

IN SHORT

IN OPEN

0.5 V-4.5 V

EXPLATION
2) GR-B207ERA,

FOR MICOM CIRCUIT

GR-B247ERA

ICI
MICOM)
P66
(AIN6)

CON5
R36

F
CC17_

SENSOR

2K
<_f:. RD1

R57
*v,v%
2K

CC19_

_ 26.1KF

D SENSOR

,_RR1
58

R4O
CC20

CON 6

261KF

R1 SENSOR

R41
CC21 2

_261KF

R2 SENSOR

_v\
2K

10€n_ 7

T
63

CCl1_

RT1

R21

_ IOKF

_/K'_

SENSOR

CHECK POINT

Freezing sensor

POINT (_) Voltage

Frost removal sensor

POINT (_) Voltage

Cold storage sensor 1

POINT (_ Voltage

Cold storage sensor 2

POINT @ Voltage

Room temperature sensor

POINT (_) Voltage

- 38 -

NORMAL(-30 °C ~ 50 °C)

IN SHORT

IN OPEN

0.5 V_4.5 V

EXPLATION
1-6. Switch

FOR MICOM CIRCUIT

entry circuit

The following circuits are entry circuits for sensing signal form test S/VV,electronic single motor damper reed StW for
examining refrigerator.
1) GR-L207ERA,

GR-L247ERA

2) GR-B207ERA,

IC1

GR-B247ERA

IC1

MICOM
P15

(MICOM}

_R2g

47K

cc13L

o SW1

2O
P15

1-7. Option designation circuit (model separation function)
1) GR-L207ERA, GR-L247ERA

47K
1
R2S'_

2) GR-B207ERA, GR-B247ERA

18 Pll

hi7

161

112
11

IC1

L(MIcoM)

(MIOOM}

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:
• 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

- 39 -

EXPLATION

FOR MICOM CIRCUIT

1-8. Stepping motor operation circuit

9,16
CE8

HIOOH

IC10
TA777#P

CON9

1,2
\

/5ov
P14
P15
P16

luF

STEPPING
MOTOR

22
3

4,_

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) 4

I
I

_. (Positive rotation) CW

I
I

INA

INB

I
I

,-_I
I
I

o_1
I
I
I
.._
I

I
I

,,,, }
I
I

I
I

,
I
I
I
I

I
I
I

I
I

I
I
I
I

i i

I
I
I

-r

- 40 -

"T"

' I --L

i
I

I
I
I

EXPLATION
1-9. Fan motor

driving

FOR MICOM CIRCUIT

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.
1) GR-L207ERA,

GR-L247ERA
(_) part

(_) part

(_), c_) part

Motor OFF

2V or less

Motor ON

2 - 3V

12 - 14V

16V

CON7

P54
C FAN PWM

4,7K

R35

53
R36 <<>
1OK _>

P51
C FAN LOCK

R¢4
350

021
FR1D2
L_
15DuH

R41
_42

P53
F FAN P_!M

52
220uF
R43
1OK

CC19

/25V

_223

R#6

F FAN

PSO
LOCK

2K
/,,/v,

_#7K

I0
CC20

6.2V

-41 -

EXPLATION
2) GR-B207ERA,

FOR MICOM CIRCUIT

GR-B247ERA

IC1

CON5
R31
330

(MICOM)

L4
150uH:

I-

4.7K

P54
C FAN PV/M

2_E7F *
R55
1OK

FAN

P51
LOCK

_CC16

/25v
R29
2JK

225

(
8

4.7K

zD2
1N¢735A
6.2V

CC15

_r77

R24
330

R:2B
62O

FAN

P53
PWM

1/2w
22CDEuSF+
85

L2C2C14

/ & FRI02
Dll

(

K7C31 g8

/2sv

cc_3

R22

49
F FAN

PSO
LOCK

%]
/_7

- 42 -

102

EXPLATION

FOR MICOM CIRCUIT

1-10. Temperature compensation and over-cool/weak-cool

compensation circuit

1. Temperature compensation at freezing room, cold storage room
1) GR-L207ERA,

GR-L247ERA

ICI
IRR14
OK
CRTq

_R15
]' IOK

Temperature

compens&tion

moore

Temperature

compens_tlon

room

_laK J

ICI
2) GR-B207ERA,

GR-B247ERA
_-• R12

'Ft_OK
CRT]

_[ R13

IOK

Temperature
Temperature

Freezing room

compensation
compens&tlon

at
at R
R room
room

56
57

Cold storage room

Resistance value
(RCF1)

Temperature
compensation

Resistance value
(RCR1)

180 k_

+5 °C

180 k_

+2.5 °C

Warmly

56 k_)

+4 °C

56 k_

+2.0 °C

compensate

33 k_)

+3 °C

33 k_

+1.5 °C

18 k£_

+2 °C

18 k£_

+1.0 °C

12 k£_

+1 °C

12 k£_

+0.5 °C

10 k_

0 °C

10 k_

0 °C

8.2 k_

-1 °C

8.2 k_

-0.5 °C

5.6 kD

-2 °C

5.6 k_

-1.0 °C

3.3 k£_

-3 °C

3.3 k_

-1.5 °C

2 k_)

-4 °C

2 k_)

-2.0 °C

Coolly

470 _

-5 °C

470 £_

-2.5 °C

compensate

• Temperature

compensation

Temperature
compensation

Remarks

Referencetemperature

table by adjustment value (difference value against current temperature)

Ex) If changing compensation resistance at a cold storage room (RCR1) from 10 kD (current resistance) to 18 k_
(modified resistance), temperature at the cold storage will increase by +1°C.

- 43 -

EXPLATION
• Temperature compensation
Mod_icat
on

FOR MICOM CIRCUIT
table at the cold storage room is as follows:

470£_

2kD

3.3kD

0.5 °C

1 °C

change

0.5 °C
Down
1 °C
Down

5.6kD

8.2k£_

10k£_

12kD

18kD

33kD

56kD

180kD

1.5 °C

2 °C

2.5 °C

3 °C

3.5 °C

4 °C

4.5 °C

5 °C

0.5 °C

1 °C

1.5 °C

2 °C

2.5 °C

3 °C

3.5 °C

4 °C

4.5 °C

change

0.5 °C

1 °C

1.5 °C

2 °C

2.5 °C

3 °C

3.5 °C

4 °C

Down

change

1.5 °C

1 °C

0.5 °C

1 °C

1.5 °C

2 °C

2.5 °C

3 °C

3.5 °C

Down

change

2 °C

1.5 °C

1 °C

0.5 °

0.5 °C

1 °C

1.5 °C

2 °C

2.5 °C

3 °C

Down

Drop

change

2.5 °C

2 °C

1.5 °C

1 °C

0.5 °C

1 °C

1.5 °C

2 °C

2.5 °C

Down

change

3 °C

2.5 °C

2 °C

1.5 °C

1 °C

0.5 °C

1 °C

1.5 °C

2 °C

Down

change

3.5 °C

3 °C

2.5 °C

2 °C

1.5 °C

1 °C

0.5 °C

1 °C

1.5 °C

Down

change

4 °C

3.5 °C

3 °C

2.5 °C

2 °C

1.5 °C

1 °C

0.5 °C

1 °C

Down

change

4.5 °C

4 °C

3.5 °C

3 °C

2.5 °C

2 °C

1.5 °C

1 °C

0.5 °C

Down

change

5 °C

4.5 °C

4 °C

3.5 °C

3 °C

2.5 °C

2 °C

1.5 °C

1 °C

0.5 °C

Down

change

resistance

470D

2 kD

3.3 k_)

5.6 k_)

Cold storage

8.2 k_)

room
(RCR1)

10 kD

12 kD

18 kD

33 kD

56 kD

180 kD
• Temperature
Temperature

compensation
compensation

at the freezing room is also performed in the same manner as cold storage room.
value is equivalent to two times the cold storage room,

• This circuit is a circuit to enter the necessary level of temperature compensation
model at the cold storage room into MICOM.

- 44 -

for adjusting different temperature every

EXPLATION
1-11. Key Button

FOR MICOM CIRCUIT

Input and Display

Lighting

Circuit

1. GR-P247, GR-P207, GR-L247, GR-L207
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.
MICOM
(IC1) r_s7

CON6

i A228M

F_
L

P36

P35

CON101

A226M

RL1
Pao
IB0

RL2
P31
IB0

ea_

R+
IBO

P33

ca4

' PWB

28
RZ7
_ICD(11

ASS'Y,DISPLAY

_zIOK

F5
F4
F3
F2
F1

_
_
_
_
_

Max
•
Min

_
_
_
_
_

R5
R4
R3
R2
R1
R

2. GR-C247, GR-C207, GR-B247, GR-B207
IC1
{MICOM)

CONe

CON101

P37

P36

P35

RLI
P30
18O
eL2
Pal
180
P32

P33
180

P22 2a

sm_

CClO
_1o2

T_
T_r_
o. _o o_o

PWB
- 45 -

ASS'Y,DISPLAY

EXPLATION
2. Compensation

FOR MICOM CIRCUIT

circuit for weak-cold,

over-cold

at f?eezing

1) GR-L207ERA, GR-L247ERA

room

2) GR-B207ERA, GR-B247ERA

IC1
R15
1OK •
RIB]
1OK

R17
10K <

JCR1

Temperature compensation
+1 °C

JCR2

+1 °C

JCR3

-1 °C

JCR4

-1 °C

+2 °C
-2 °C

Compensation
for weak-cold
JCR3

in CUT

Compensation
for over-cold
JCR4

JCR1

JCR2

Temperature compensation value
at cold storage room

Remarks

0 °C (In shipment from factory)
CUT

-1 °C
CUT

-1 °C
+1 °C

CUT
CUT
CUT

CUT

-2 °C
CUT

CUT

+2 °C
0°C

CUT

+1 °C

CUT

0°C

CUT

+1 °C

CUT

0°C

(_
CUT
(_

• The above option circuit is a circuit to compensate for temperature

- 46 -

0°C
0°C
-1 °C

at the cold storage room by simply cutting in service.

EXPLATION
3. PWB parts diagram

FOR MICOM CIRCUIT

and list

3-1. PWB Ass'y, main part diagram
1. GR-L207ERA, GR-L247ERA
f

il.r_

- 47 -

EXPLATION

FOR MICOM CIRCUIT

3-2. Parts list
1. GR-L207ERA,
NO
1

GR-L247ERA

DWG NO. 3ESCRIP]qO_
iB70JBSfll_

PWB,MAIN

i170JB201_
2

SpEU'

MAKER

REUARK

3ESCRIP_O_

FR I(DS 11Q7A', 300 £AN L=16

)CE2271FB31

1,2:1

)_EIO71H&_ E¢_'("K

7_mE

]RA_9_S_{£L)

SAM[L

SPEC,

3CE1061K63_

TRANS

MAKER

2E5

100uF/25V

{UBYCON CE9
CE8

1uF/50V

3E3

)_E687AH69[
3
4

i630JBB001/

J[202I[62(_P21

CON4

E¢&!p_,(_i_ _ 680uF/25V
)CE22B7H69[
2200uF/25V

_630JB8001[

JE2D2

CON2

]CE107AH61[

1_1

_630JB8001[

dE202

04 JAE EUN CON1

_AM HWA 3E4
3E2

lOOuF/50V

)_E227AHB3f E¢I_G

REMARK

220uF/16V

Q_E476B_6_Od _I_

220uF/25V

_UBYCON 3E6,7

€7uF/450V

_AM HWA 3E1

)CQ¢732Y43[

3M3

_t_IT_[9_4__

CON5

MyL'CAp_TO 473/5_0V
)C@241N63[
22€/10QV

J_211 ,'K_-_,_,B
I

CON3

)CK2210_51[ CSR'CAP_TO

221

BBSOJBBO07C

917786 I(BP)

CON6

)CK¢71DK961

471/50V

CC1

11 5530JBBOIG_

9177_1 103P)

CONB

)CKIO@K@BI CSR'gAP_aTO

104/50V

SA_ HWA CC5_16,21_31

CONg

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- 49 -

1/8W

EXPLATION

io
99

BWG NO

DESCRIPq]ON

SpEC'

)_KE900041

Iml0G009AF

KEC

q_,5

O6rv

_FS3510AC

Q1
s_

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0_
TEST S/W
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04
mP

TACT
SW1

3 P, D I F OTAX
S/W

SW2
0 6X7

4360701_

REMARK
Q2,4

KTC_198
(RC1

i210JBBO011
02

MAKER

KTA1705

IOC )TR31g_ogA: TRANSISTOR
01

FOR MICOM CIRCUIT

JUMP

WIRE

5m_

J29_J34

0 6X10mm
0 6X12

J01_10,12_2l

5m_

J35
JF1,JF2(FUSE1

4360701_

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WIRE

06XlOmm

JCR1
JCR2
4360701_

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WIRE

06XlOmm
JCR3
JCR4
OP1

4360701_

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WIRE

06XlOmm

4360701_

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WIRE

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OP1 (EXPORT)

i200JBSOB1E
FILTER

JHI(H/B

luF+120/350VA[
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CR1

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DV910320
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113

3LRISOQK4JCCHOKE COIL I 50u

TNC

I 14

3J02447C

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SAM

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t le

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DAE JIN

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KOKI

- 50 -

EXPLATION
4. PWB circuit diagram
1. GR-L207ERA,

FOR MICOM CIRCUIT
- PWB circuit diagram

may vary a little bit depending

GR-L247ERA

cIN1E

,/i

PWB ASS'Y,MAIN

- 53 -

on actual condition.

EXPLATION

FOR MICOM CIRCUIT

- 54 -

ICEMAKER
ANDDISPENSER
OPERATION
PRINCIPLE
ANDREPAIR
METHOD
1. Working

Principles

1-1. Ice Maker Working Principles

• Level Ice Maker Cube Mould for "Initial Control"
after power is input.

• Wait until the water in the cube mould is frozen
after ice maker starts operation.

• 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.

• Conduct "Ice Making Control" after supplying water into the ice maker
cube mould by operating water valve.

• 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 GRIP247, GR-P207 and GR_L247, GR-L207 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
"Water" _"Cube Ice" * "Crushed Ice",

pressed, light is on in the following sequence:

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.

- 57 -

ICEMAKER
ANDDISPENSER
OPERATION
PRINCIPLE
ANDREPAIR
METHOD
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.

S/W 1

DIP SWITCH SETTING
S/W 2
S/W 3

WATER SUPPLY TIME

OFF

6.5 Sec.

OFF

5.5 Sec.

OFF

6 Sec.

OFF

7 Sec.

OFF

7.5 Sec.

OFF

8 Sec.

OFF

9 Sec.

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.

- 58 -

ICEMAKER
ANDDISPENSER
OPERATION
PRINCIPLE
ANDREPAIR
METHOD
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
[ Bankis

HALL IC

SIGNALS

OFF

'(_
', i

'
i

OOT OT

ICI

Bank is

HALL IC
OUTPUT
SIGNALS

,,)i

ICECHECKINGLEVEL 30° ',
i
i
i_ _1 ...........
i
i
i
i

....

[,0ECHECK,.G

i
i .....
i
J

-8" O" 10"
Lock

32"

Ice making
(Onginal point)
2-+1 sec

41"

i
l_ _ _1
i
i
J
J
i

53' 58'

80"

Ice Checking

_"I
9±3 sec
8±3 sec

160' 170"
ice Ejection
Lock

ICEMAKER
ANDDISPENSER
OPERATION
PRINCIPLE
ANDREPAIR
METHOD
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: lce making _lceejection
_Returningto
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

- 60 -

door opening.

ICEMAKER
ANDDISPENSER
OPERATION
PRINCIPLE
ANDREPAIR
METHOD
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)

Failed DC Power
_t

Change main PWB

• Check DC power (5V, 12V).

Failed ice making sensor

Replace Ice making
Sensor

Replace Ice Maker Unit

Replace Main PWB

Replace Ice maker Unit

Replacevalve
water
supply

• Check the resistance of
both ends (1,2) of ice making
sensor of CON9.
• Defects between ice making
sensor and board
(Pin No. 60 of IC1)

Failed Ice Maker Unit
• Is the resistance of both ends
9,10 of ice ejection motor of
CON9 between 18 and 22£!?
• Is ice ejection motor drive circuit
(1C11 and peripheral circuits)

normal?

• Defects between Hall [C and
Board (Pin No. 42 of IC1).
• Confirm ice ejection and level
return when pressing
test switch.

/
_f

ejection and level return
normal when test switch is
pressed for more than 0_ second? ./"
Does the belI

Failed ice maker unit test switch
• Are both ends 5,6 of CON9
test switch open?
• Defects between test switch
and board (Pin No. 43 of IC1).
• Are both ends (3,4) of CON9
ice maker stop switch short?
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

-61 -

ICEMAKER
ANDDISPENSER
OPERATION
PRINCIPLE
ANDREPAIR
METHOD
4. Ice maker

circuit part

CON9
RIM1
60

P40

R52

1
2

1B2KF

R55

ICE

MAKER

SENSOR

3
_c_

ICE MAKER
STOP S/W

<<4_R5
5
43

R55

P42

_47K

0025

2
42

R57

_2K

P41

TEST

S/W

7
_I

ICE MAKER

IC1
8

P43

P44

47K

(For

wo_rd)

(RevePse)

ICE MAKER

ICll
BA5222

MOTOR
_223/100V

The above ice maker circuit is applied to the R S65DQG/DSG, R-S65DRG and consists of the ice maker unit part installed
at the freezing room and the ice maker driving part of the main PWB.
Water supply to the ice maker container is done by opening the valve for the established water supply time by operating the
container via a solenoid relay for the ice valve of the solenoid valve placed at the M/C room. If the water supply time is
elapsed, water supply is automatically stop. This circuit is a circuit for implementing function such as ice removal, ice-full
detection, horizontal balancing and sense of ice-making temperature for the ice-maker container. Since ice-making
temperature sense is same as in the temperature sense circuit part of the main PWB, refer to it.
Test switch input detection of the ice-maker is same as in the door switch input detection circuit of the main PWB.
1. This function is used in operation test, service execution and cleaning etc and performed if pressing the test switch
installed at the automatic ice-maker itself for more than 0.5 second.
2. The test switch operates in the horizontal status and test function is not input in the water supply operation. Ice removal
control and water supply control is not performed if full-ice is arrived during the operation of test function.
3. If pressing the test switch for 0.5 second or more in the horizontal status, ice removal operation is immediately performed
irrespective of the generation conditions of ice at the ice-making tray. Therefore, care is required since water may
overflow if operating test function in the water state that ice-making is not done. A cycle of water supply is performed in
the horizontal balancing operation after ice removal operation. Therefore, you can check any problem of ice removal
operation, horizontal operation and water supply. In this case, if test function is normally performed, "Ding-" buzzer sound
rings and water supply control is performed. Thus, no ringing of "Ding-" buzzer sound means failure and repair check
must be performed.
4. If water supply is completed, operation in the normal cycle of "ice making
water supply".

- 62 -

* ice removal

* returning to horizontal status

CIRCUIT

CIRCUIT DIAGRAM
GR-P(L)207,247*RA(QA)(No,e2_
• HOMEBAR PART(H/BAR-HEATER,DOOR
CAPACITORPART,1HE PLUGTYPE,
COMPRESSOR EARTHPART,
PILOTVALVEON CIRCUIT DIAGRAMARE
SUBJECTTO CHANGE IN
DIFFERENTLOCALITESAND
ACCORDANCEWITH MODELTYPE.

•N :NEUTRAL

PWB ASSEMBLY,MAIN

BL
YL

FUSE PART

GON7

IP,_IO;N_447Q
_

F-FAN

C-FAN
MOTOR(BLDC)

CAPACITOR
PART
PERCEPTION
DEFROST.SENSOR

F®

O.L.P

BK
K

] _-SENSOR

)(N)

HOMEBAR
DOORS/W

L_S° I

PK
COMP' __

COMPRESSOR
EARTHPART

[RUNNING
RD/WH(I_
_
!

P.T.C ASSY
RD/WHIN,

WH_)
DISP'HEAIER
S/W

HEATER
PLA'_
(DI_P)

I_ENSOR
_ING

RI"SENSOR
R,

172_C1
HEK_R,CORD-L

PERCEPTION

RD/WH(N

_(N)

HEA]ERSHEET
DAMPER E

DISP-LAMP
_
-

•
BL

ICE MAKER
MOTOR

BI
ICE MAI_R
TEST S/W

ICE MAKER
STOP S/W
ICE MAKER
SENSOR

PWB ASSEMBLY,
DISPLAY

_
BO
RD
BN

_N4

SB
GY

BO<__BO

R-LAMP

WH_

WAIE

GY
B[

5
4
3
2

CON3

•FUSE
PART
APPLICATION(OPTIONAL)
FUSE
100-127V
NO FUSE

DISPENSER
LEVER S/W

R-DOOR S/W

HEATER
SHEET
{DUCT-i_P.)_

CONlOl
GY g
PR 8
BL 7

_,%N%

NH_

_
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2SOVAC 15A

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; GELB
BK(BLa_ClO:_I'IWARZ
3B(SKy BLUE) : HIMMEUBLALI
WI'_BK_hl_I_c_BL_CK_: WEISS/ScI'_/ARz

GN(G
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BN(BRO1M_:BRAUN
pK(PINK_ : ROSA
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HEATER,
PLATE(WfFANIg

PR(PIJRPL_
: PIJRFtJR
BC(BRIQHT_ANQE_:PIB,.L_I_E
GN/YL(GREENHELLOW) ;GRON/GELB
R_WH(RE_ITE_:
ROTh'_EIS_

- 63 -

WH(lh_FT_)
: WEISS
Mod_ Agplimi_on
QY(QRAYJ:QI:L_J
_1_¢_
BL_.H ( BLUFJWHIT_ ; BLALIp,_EIS

3854JD1054C

CIRCUIT

DIAGRAMME DE CIRCUIT
GR-P(L)207,247*RA(QA)(No,e2
• PARTIEBARD'APPARTEMENT
BARD'APPARTEMENT:,
PORTES/W),PARRE
CONDENSEUR,TYPEDERCHE, MISEALA

GROUPEPWB PRINCIPAL

TERREDUCOMPRESSEUR,
VANNESPILOTES
SURLESCHEMAELECTRIQUE
SONT
SUSCEPTIBLES
DEMODIFICATIONS
DANS
LESDIFFEREN_SREGIONSETSELONLETYPE

FUSIBLE
P,_nE
CON7

(P,_IO;N_!47Q
_

L(GN)
CONTACT PORTE-F

ETLE MODELE.MO'i_URDE
• N :NEU_E
VENTILATEUR-F
YL

MO'IEUR DE
VENTILATEUR-C

PAR11E
CONDENSEUR
PORTE-F

CAPTEURDEDEGLA_AGE
I

COMP'

O.L.P

IFONC_NNEMENT
:CONDENSEUR
RD/WH_)
F

CAPTEUR-F

CONTACT
POLITE
BAR
D'APP_MENT

CAP_UR-R1
PERCEPTION OUVERTURE
POR'_ BAR D'APPARTEMENT, R I

RD/WHOql

CHAUFFAGE, PLAQUE
(MODERA]EUR)

LAMPEDISTRIBUTEUR
_
_

f_i

DE GLACE

•
BL

VANNE
PILO
"_

ShV DETEST
FABRIQUEDEGLACE

BI
ShV D'ARRET
FABRIQUEDE GLACE
CAPTEURFABRIQUE
DE GLACE

GROUPE PWB,
ECRAN

_
BO
RD
BN

5
4
3
2

S_/VNIVEAU
DISTRIBUTEUR

CONTACT PORTE-R
CON6

CHAUFFAGE
PLAQUE
CON101 (CONDUIT_
PORTE)
GY 9
PR 8
BL 7

o,,_%"_-_R

GY
PR

_N4

BO_ _BO

LAMPE- R
_

BL
_ SOLENOIDE
WH_

....

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- 64 -

TROUBLE
1. TROUBLE

DIAGNOSIS

SHOOTING

CLAIMS.

1. Faulty start

CAUSES AND CHECK POINTS.
1) No power on outlet.
2) No power on cord.

HOW TO CHECK
* Measuring instrument :
Multi tester

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.

• Check the voltage.
If the voltage is within +85%
of the rated voltage, it is OK.
• Check the terminal
movement.

Bad connection between plug and adapter (faulty plug).
The distance between pins.
Pin outer diameter.
3) Shorted start circuit.
Nopower on
Disconnectedcopperwire.
power cord.

• Check both terminals of
Powercordis disconnected.
Faultysoldering.

Internalelsotncalshort.
Faultyterminalcontact.

Loosecontact,
Largedistancebetween
maleterminal,
- Thinfemaleterminal.

power cord,
Power conducts : OK.
No power conducts : NG

Terminaldisconnected,
Badsleeveassembly.
Disconnected. Weakconnection.
Shortinsertedcordlength.
Wornout toolblade.
O.L.P is off.

Capacityd O.LP issmall.
CharacteristicsofO.L.Pisbad.
Badconnection.
Poweris
InnerNi-Crwireblowsout.
disconnected.
Badinternalconnect.

• Check both terminals of
O.LR
If power conducts : OK.
If not : NG.

Faultyterminalcaulking(Cawireis cut).
Badsoldering.

Noelectricpoweron compressor.- Faultycompressor.
FaultyPTC.

Powerdoesnot conduct.- Damage.
Badcharacteri_cs._ Initialresistanceisbig.
Badconnectionwith _TooIcose.
compressor.
LAssemblyis not possible.
Badterminalconnection.

4) During defrost. FStart automatic defrost,
L Cycle was set at defrost when the refrigerator
was produced.

- 65-

• Check the resistance of both
terminals.
At normal temperature 6 :
OK.
If disconnected : oo.

TROUBLE

DIAGNOSIS

CLAIMS,
2. No cooling.

CAUSES AND CHECK POINTS.
2) Refrigeration system is clogged.
Moisture
dogged,

Residualmoisture
inthe evaporator.

Air Blowing.

Notperformed.
Tonshort.
impossiblemoisture
confirmation.

HOW TO CHECK
• Check the clogged
evaporator by heating (as
soon as the cracking sound
begins, the evaporator start
freezing)

Lowairpressure.
Leaveitintheai_ _ Dufingresttime.
• Afterwork.
Capsaremissed.
Residualmoisture.

Notdriedinthe compresse_
Elapsedmorethan6 monthsafterdt_ng
Capsaremissed.
Nopressurewhenit is_n.

Noelectric
power on

thermontat.

Insuffidentdrier
capadty

[ Drydrier- Drlertemperature.
Leaveit inthe air. Checkon package
condition.
Goodstorageafter
finishing.

Residuaimoisture
inpipes.

Capsaremissed. _Duringtransporta_.
• Duringwork.
Air blowing._ Not _fformed.
• Performed.
Tonshorttime.
Lowairpressure.
Lessdryair.

Moisturepenetra_ - Leaveit inthe air.- Moisturepenetration.
intothe refrigerationoil.
• The evaporator does not cool
from the beginnig (no evidece
of misture attached).
The evaporator is the same
as before even heat is

Shortpipeinsert.
Weldjoint
dogged.

Pipegaps. FTonlarge,
LDamagedpipes.
Tonmuchsolder.

applied.
Thecapillarytubeinserteddepth.- Tonmuch.
Drierdoggeing.

Capillarytubemelts.- Overheat.
Cloggedwithforeignmaterials. Desiccantpowder.
Weldoxides.
Drierangle.
Reducedcrosssectionbycutting.- Squeezed.

Foreignmaterialclogging.

Compressor
cap isdisconnected.
Foreignmaterials
are inthe pipe.

- 66 -

TROUBLE
CLAIMS.
3. Refrigeration
is weak.

DIAGNOSIS
CAUSES AND CHECK POINTS.
1) Refrigerant Partly leaked. •

Weldjointleek.
Partsleak.

2) Poor defrosting capacity.
Drainpath (pipe)clogged.

HOW TO CHECK

• Check visually.
InjectP/Uintodrainhose.

Foreignmaterials
penetration.

Injectthroughthe
hole.
Sealwithdrain.

P/Ulumpinput.
Screwinput.
Otherforeignmaterials
input.

Capdrainis notdisconnected.
Defrostheaterdoesnot
generateheat.

Parts
disconnected.

Plate
heater

Wireis cut.
- Heatingwire.
- Contactpoint
betweenheating
andelectricwire.
Dentbyfinevaporator,
Poorterminalcontacts.

Cord
heater

Wireis cut.
- Leadwire.
- Heatingwire.
- Contactpoint
betweenheatingand
electricwire.
Heatingwireiscorroded
-Waterpenetration.
Badterminalconnection.

- 67 -

• Check terminal
Conduction: OK.
No conduction: NG.
If wire is not cut, refer to
resistance.
P=Power
V=Voltage
R=Resistance

R
V2
P

R = --

TROUBLE

DIAGNOSIS

CLAIMS.
3. Refrigeration
is weak.

CAUSES AND CHECK POINTS.
Residual
frost.

Weakhe_ from heate_

HOW TO CHECK

SheathHeater- rated.
Heaterplate- rated,
Heatercord-L- rated.

Badhe_er assembly. He_er plate F Nocontactto drain.
L Loosenedstoppercord.
He_er cord-L Notcontactto the
evaporatorpipe.
Locationof assembly
(topandmiddle).
Toosheddefrostingtime.

DefrostSensor.
- Faultycharacteristics.
Seat-D(missing,location,thickness).

SthJcturalfault.

Gasketgap.
Airinflowthroughthefan motor.
Badinsulationof casedoor.

No automaticdefrosting.
Defrostdoes not retum.

3) Cooling air leak.
Bad gasketadhestion

Gap.
Badattachment.
Contract.

Door sag. r Badadhesion.
Weakbindingforce_ hinge.

4) No cooling air circulation.
Faultyfan motor.

Fanmotor.

Doorswitch.

• Check the fan motor
conduction: OK.
No conduction: NG.

Selflocked.
Wireis cut.
Badterminalcontact.
Faults.

Contactdistance.

Buttonpressure.
Meltedcontact.
Contact.
Refrigeratorandfreezerswitchreversed.
Buttonisnot pressed. Poordoor
attachment.
Doorliner
(dimension).
Contractioninner
liner.
Misalignment
Badterminal
sennection.
P/Uliquidleak.

- 68 -

TROUBLE

DIAGNOSIS

CLAIMS.
3. Refrigeration
is weak.

CAUSES AND CHECK POINTS.

HOW TO CHECK

4) No cooling air circulation.
Faultyfan motor,

Fanis
F Fanshroudcontact.- Clearance.
constrained,_ Dampingevaporatorcontact.
L Accumul_edresidualfrost.

Small coolingair
discharge.

Insufficient
motorRPM

Faultyfan.

Shorud.

Fanoverload.- Fanmisuse.
BadlowtermperatureRPMcharacteristics.
Ratedpowermisuse.
Lowvoltage.
Fanmisuse.
Badshape.
Looseconnection.- Nottightlyconnected.
insertdepth.
Bent.

Iceandforeignm_edalson rotatingparts.

5) Compressor

capacity.

6) Refrigerant
too much or too little.

Ratingmisuse.
Smallcapacity.
Lowvaltage.
Malfunctionofchargingcylinder.
Wrongsettingd refrigerant.
Insufficient
compressor.- Faultycempresse_

7) Continuous operation
- No contact of temperature

controller. - Foreign materials.

8) Damper opens continuously.
Foreign materials
P/Uliquiddump.
jammed.
EPSwd(ersediment.
Screw.
Failed sensor, - Position of sensor,
Characteristics
of damper.

Bad characteristics
Parts misuse,

of its own temperatue.

Charge of temperature - Impact.
characteristics.
9) Food storing place. - Near the outlet of cooling air.

- 69 -

• Check visually after
disassembly.

TROUBLE

DIAGNOSIS

CLAIMS.
4. Warm
refrigerator
compartment
temperature.

CAUSES AND CHECK POINTS,
1) Colgged cooling path.
• P/U liquidleak.
Foreign matepals.-- P/Udump liquid.
2) Food storate.

5. No automatic
operation.
(faulty
contacts.)

Storehotfond.
Storeton mucha'conce.
Dooropen.
Packagesblockairflow.

1) Faulty temperature sensor in freezer or refrigerator compartment.
Faultycontact.
Faultytemperaturecharacteristics.
2) Refrigeration load is too much.

Food. ,Tonmuchfond.
_Hot foed.
Frequentopeningandclosing.
Coolair leak.
Poordoordose.- Partlyopens.

3) Poor insulation.
4) Bad radiation. _
L

Highambiesttemparature.
Spaceis secluded.

5) Refrigerant leak.
6) Inadequate of refrigerant.
7) Weak compressor

discharging

power. •

Differentrating.
Smallcapacity.

8) Fan does not work.
9) Button is positioned at "strong."

6. Dew and
ice formation.

HOW TO CHECK

1) Ice in freeezer compartment.
Extemal air inflow.-- Rubbermotorassemblydirection(reverse).
Door opens
Weakdoordosingpowe£
but not closes.
Stoppermalfundion.
Doorsag.
Foodhindersdoordosing.

Gap around gasket.-- Contraction,distortion,loose,door twisted,comer not
fullyinserted.
Food vapor. -- Storinghot food. -- Unsealedfond.
2) Condensation in the refrigerator compartment.
Door opens
Insufficientdosing.
but not closes.
Doorsag.
Foodhindersdoordosing.
Gasketgap.
3) Condensation
Conl air leak
and transmitted.

on liner foam.
Notfullyfilleq.,

Tonptablepart.
Out plateR/Lpart.

Flangegap.-- Notsealed.
Gasketgap.

- 70 -

• 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.

F RecessHeateris cut.
L Ductdooris open./ Foreignmaterialdogging.

Dew on the door surface.

Dew on the
gasket surface.

Not fully filled. T Surface.]
L Cormer_
P/U liquid contraction. _

IJquid
short,e.
IJquidleak.

Badwingadhesion. FWingsag(Iowerpart).
• Doorlinershapemism_ch.
Come£

FToo muchnotch.
• Broken.
HomeBarheateris 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
Compressor
inserted.

sound _
_

operating sounds.
Sound from machine itself.
Sound from vibration.
Restrainer.
Rubber
Too hard.
seat.

Distorted.
Aged.
Burnt.

Stopper.

Bad Stopper
assembly.

Not fit
(inner
diameter
of stopper).
Tilted.
Not

Compressor

base not connected.

Bad welding compressor stand(fallen),
Foreign materials in the compressor
compartment.
O.L.E sound.
Capacitor noise.

Chattering sound.
Insulation paper vibration.
Pipe contacts each other. - Narrow interval.

Pipe sound.

No vibration damper,_

Damping rubber-Q,
Damping rubber-S.
Capillary tube unattached.

-71 -

TROUBLE

DIAGNOSIS

CLAIMS.
7. Sounds

CAUSES AND CHECK POINTS.
1) Compressor compartment
Transformer sound. _lts

operating sounds.
ow_fault.-- Coregap.
Badconnection.-- Correctscrewconnect.

Drip tray vibration sound

Badassembly.
Distortion.
Foreignmaterialsinside.

Back cover machine sound. T

Badconnection.
Partlydamaged.

Condenser drain sound.

Notconnected.
Badpipecaulking.

2) Freezer compartment

_
h

sounds.

Fan motor sound. • Normaloperatingsound.
L Vibrationsound._
Aged rubbersedc,
Badtorqueforassemblingmotor
bracket.
Sounds from fan
contact.

Fanguidecontact.
Shroudburrcontact.
Dampingevaporatorcontact.
Residualfrostcontact._
PoortreatmentCordheater.
L
Narrowevaporatorinterval.

Unbalance fan sounds_

Unbalance.

Surfacemachiningconditions.
Fandistortion,
Misshappen.
Burr.

Iceon thefan.-- Air intake(oppositeto motor
rubberassembly.)

Motor shaft _
contact sound_

Supporterdiso_ted.
_ TiIteddaringmotorassembly.

Resonance.
Evaporator noise.

Evaporatorpipe contact.-- Nodampingevaporator
Soundfrom refrigerant.-- Stainlesssteelpipeshapein
accumulator.
Soundfromfin evaporatorandpipeduringexpansion
andcontraction.

3) Bowls and bottles make contact on top shelf.
4) Refrigerator roof contact.
5) Refrigerator side contact.
6) Insufficient Lubricants on door hinge.

- 72 -

HOW TO CHECK

TROUBLE

DIAGNOSIS

CLAIMS.
8. Faulty lamp
(freezer and
refrigerator
compartment).

CAUSES AND CHECK POINTS.
1) Lamp problem.

HOW TO CHECK

,Filament
blows out.
Glass is broken.

2) Bad lamp assembly.

.Not

inserted.
Loosened by vibration.

3) Bad lamp socket.
Disconnection._

Bad soldering.
Bad rivet contact.

Short.

Water penetration_

Low water
level in tray.

Bad elasticity of contact.
Bad contact(corrosion).
4) Door switch.

Its own defect.
Refrigerator and freezer switch is reversed.
Travlel distance.
Bad connection.
Bad terminal contact.
P/U liquid leak..

9. Faulty internal
voltage(short).

1) Lead wire is damaged.
Wire damage when assembling
Outlet burr in the bottom plate.

• Connect conduction and
RT.C. Cover.

Pressed by cord beaten 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.
Bad coil insulation.

Compressor.
Plate heater.
Melting fuse.
Cord heater.

_Pipe

Sealing is broken.

Moisture penetration.

damaged.
Bad sealing.

Moisture penetration.

Sheath heater.

- 73 -

non-conduction parts and
check with tester.
Conduction: NG.
Resistances: OK.

TROUBLE

DIAGNOSIS

CLAIMS.
10. Structure,
appearance
and others.

CAUSES AND CHECK POINTS.
1) Door foam.
Sag.

Weaktorqueof
hingeconnection,

Weakgasket
adhesion.
Fixedtape.

Bo_is looseneddunng
transporfaien.
Nottightlyfastened.
Screwwornout.
AdhesionsurPace.
Netwelltixed.

Noise during
operation.

Hingeinterference.

Malfunction. _

Notdosed Interferencebetweendoor linerand innerIine_
Refrfgerater
Stopperwornout.
compartmentis
Bad_eezercompedmentdoor
openedwhenfreezer
assembly.
compartmentis
Nostopper.
closed(faultystopper).

2) Odor.
Temperature of
refrigerator
compartment.
Deodorizer. _

Food Storage.

Others.

Biggerdoorfoam.
Hinge-Pintilted-Poorflatness.
Nowasher.
Nogreaseandnot enough
quantity.

Faultydamper
control.
Buttonissetat"weak".
Doorisopen(interference
by
food).

High.

Nodeedonzer.
Poorcapacity.
Sealcondition.
Storespecialodorousfood.
L Longtermstorage,
Odorsfromchemicalprocacts.

- 74 -

HOW TO CHECK

2. Faults
2-1. Power
Problems

Causes

No power on

- Power cord cut.

outlet.

- Faulty connector insertion.
Faulty connection

between plug

Checks

Measures

Remarks

- Check the voltage with tester.

-Replace the components.

- Check visually.

-Reconnect the connecting

- Check visually.

- Reconnect the connecting parts.

- Check the fuse with tester

- Find and remove the cause of

parts.

and adapter.
Fuse blows out. - Short circuit by wrong connection.
Low voltage products are
connected to high voltage.
Short circuit by insects.
Electricity leakage.
High voltage.

or visually.
- Check the input volt are with tester
(between power cord and products).

- Replace with rated

problem(ex, short, high voltage,

fuse after confirming

low voltage).

its specification.

- Replace with rated fuse.
• If fuse blowns out

- Check the resistance of power cord
with testerf (if it is 0£_, it is shorted).

frequently, reconfirm

Short circuit of components

the cause and prevent.

(tracking due to moisture and dust
"-4
O1

penetration).

2-2. Compressor
Problems
Compressor

Causes
- Faulty PTC.

does not

Checks
- Check the resistance.
Vlaue:_ is defective.

Measures
- If resistance is infinite, replace it
with new one.
- If it is not infinite, it is normal.

operate.

- Check other parts.
Compressor is frozen.

- If compressor assembly parts are
normal(capacitor,

PTC, OLP),

apply power directly to the
compressor to force operation.
(_

Auxiliary

winding _

- During forced operation:
- Operates: Check other parts.
- Not operate: Replace the frozen
compressor

with new one, weld,

evacuate, and recharge refrigerant.

pMo_
iwLWinding _

OLP

It starts as soon as it is
contacted.

• Refer to weld repair procedures.

Remarks

2-3. Temperature
Problems

Causes

Checks

High

Poor cool air circulation due to faulty

Lock -- Check resistance with a

temperature

fan motor.

Measures

Remarks

Replace fan motor.

tester.

in the freezer

0_): short.

compartment.

oo_):cut.

Reconnect and reinsert.

- Rotate rotor manually and check
rotation.

- Wire is cut.
- Bad terminal contact: Check
terminal visually.

Maintain clearance and remove ice
(Repair and/or replace shroud if fan

- Fan constraint. - Fan shroud
contact: Confirm

is constrained by shroud
deformation).

visually.
- Fan icing:
Confirm visually.

"-4
O3

Faulty fan motor due to faulty door
switch operation.

- Iced button (faulty) operation:
Press button to check

- Confirm icing causes and repair.
Replace door switch.

Faulty button pressure and contact:
Press button to check operation.
- Door cannot press door switch
button: Check visually.

- Door sag: fix door.
Door liner bent:replace door or
attach sheets.

Bad radiation conditions in

Check the clearance between the

Keep clearance between

compressor compartment.

refrigerator and wall (50 mm in

refrigerator and walls (minimum

broken if cleaning

minimum).

50mm).

performs while the

- Check dust on the grill in

Remove dust and contaminants

refrigerator is on.

compressor compartment.

from grill for easy heat radiation.

- Check dust on the coils condenser.

Remove the dust with vacuum
cleaner from the coils condenser
while the refrigerator is off.

- The fan may be

2-4. Cooling
Problems
High

Causes
Refrigerant leak.

temperature

Checks

Measures

Check sequence

Weld the leaking part, recharge the

1. Check the welded parts of the

refrigerant.

in the freezer

drier inlet and outlet and drier

compartment.

auxiliary in the compressor
compartment

Remarks
Drier must be replaced.

Ill

(high pressure side).

2. Check the end of compressor
m

sealing pipe (low pressure side).
3. Check silver soldered parts.
(Cu + Fe I Fe + Fe).

4. Check bending area of wire
condenser pipe in compressor
compartment

(cracks can

happen during bending).
5. Check other parts (compressor

-..q
-..q

compartment

and evaporators

freezer compartment).
Shortage of refrigerant.

Check frost formation on the surface

Find out the leaking area, repair,

of evaporator in the freezer

evacuate, and recharge the

compartment.

refrigerant.

- If the frost forms evenly on the

No leaking, remove the remaining

surface, it is OK.

refrigerant, and recharge new

If it does not, it is not good.

refrigerant.

Drier must be replaced.

Problems

Causes

High
temperature

Cycle pipe is clogged.
in

Checks
Check sequence.
1. Check temperature of condenser

Measures
- Heat up compressor

Remarks
discharging

weld joints with touch, disconnect

the freezer

manually.

the pipes, and check the clogging.

compartment.

If it is warm, it is OK.

Remove the causes of clogging,

If it is not, compressor discharging

weld, evacuate, and recharge

joints might be clogged.

the refrigerant.

2. Manually check whether hot line

Direr must be replaced.

rrl

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

pipe is warm.

condenser discharging

line weld

If it is warm, it's OK.

joints might be clogged.

If it is not, condenser outlet weld

Disconnect with torch, remove the

joints might be colgged.

causes, evacuate, and recharge

seal refrigerant.

"4
O3

Leak at loop pipe weld joint

Check sequence.

Replace the compressor, weld,

(discharge) in compressor.

1. Manually check whether

evacuate, and recharge refrigerant.

condenser is warm, It is not warm
and the frost forms partly on the
evaporator in the freezer
compartment.

Faulty cooling fan in the compressor

Check sequence.

- Replace if motor does not operate.

compartment.

1. Check cooling fan operation.

- If fan is disconnected,

2. Check that cooling fan is
disconnected from the motor.

check fan

damage and reassemble it.
• Refer to fan motor disassembly
and assembly sequence.

Drier must be replaced.

2-5. Defrosting

failure

Problems
No defrosting.

Causes

Checks

Heater does not generate heat as

1. Check the resistance of heater.

the heating wire is cut or the circuit

0D: Short. o_): Cut.

is shorted.

Tens to thousands D: OK.

1) Heating wire is damaged when

2. Check the resistance between

inserting into the evaporator.
2) Lead wire of heater is cut.

housing terminal and heater
surface.

3) Heating wire at lead wire contacts

0_: Short. o_: Cut.

is cut.
Sucking duct and discharging

Measures

Remarks

Heating wire is short and wire is cut.

Seal the lead wire with

• Parts replacement:

insulation tape and heat

Refer to parts

contraction tube if the cut

explanations.

lead wire is accessible to
repair.

Ill
m

Tens to thousands _: Short.
hole

are clogged:
1. Impurities.
2. Ice.

1. Confirm foreign materials. In case

1) Push out impurities by inserting

of ice, insert the copper line

copper wire.(Turn off more than

through the hole to check.

3hours and pour in hot water if

2. Put hot water into the drain
(check drains outside).

frost is severe.)
2) Put in hot water to melt down frost.
3) Check the water outlet.
4) Push the heater plate to sucking

-..q
¢O

duct manually and assemble the
disconnected
Gap between Sucking duct and

1. Confirm in the Sucking duct.

Heater plate(Ice in the gap).

parts.

1) Turn off the power, confirm
impurities and ice in the gap, and
supply hot water until the ice in the
gap melts down.
2) Push the Heater plate to drain
bottom with hand and assemble
the disconnected

parts.

Wrong heater rating (or wrong

1. Check heater label.

Faults:replace.

assembly).

2. Confirm the capacity after

- How to replace: Refer to main parts.

substituting the resistance value
into the formula.
p=--

V2 (V: Ratedvoltage 0f user country)
R

(R: Resistanceof tester[D])
Compare P and lave1capacity.
Tolerance:+7%

Problems
No defrosting

Causes
Melting fuse blows out.

Checks
_ Check melting fuse with tester. -

1) Lead wire is cut.

If 0£_: OK.

2) Bad soldering.

If _:

Ice in the Sucking duct.

wire is cut.

1. Check the inner duct with mirror.

1) Icing by foreign materials in the

Measures
Faullty parts: parts replacement.
- Check wire color when maeasuring
resistance with a tester.
1) Turn power off.
2) Raise the front side(door side),

duct.

Remarks

rrl

support the front side legs, and let

2) Icing by cool air inflow through

the ice melt naturally. (If power is
m

the gap of heater plate.

on, melt the frost by forced

3) Icing by the gap of heater plate.

defrosting.)
2. Check by inserting soft copper

3) Reassemble the heater plate.

wire into the duct (soft and thin
copper not to impair heating wire).
Bad cool air inflow and discharge,

OO
O

1. Turn on power, open or close the

and bad defrosting due to faulty

door, check that motor fan

contact and insertion (bad connector

operates (If it operates, motor fan

insertion into housing of heater,

is OK).

melting, fuse and motor fan).

2. Disconnect parts in the refrigerator
compartment, check the connection
around the housing visually,
defrost, and confirm heat generation
on the heater. Do not put hands on
the sheath heater.
3. Check the parts which have faults
described in 1, 2 (mechanical
model: disconnect thermostat
from the assembly).

1) Check the faulty connector of
housing and reassemble wrongly
assembled parts.
2) If the parts are very damaged,
remove the parts and replace it
with a new one.

2-6. Icing
Problems

Causes

Checks

Measures

Remarks

Icing in the

1) Bad circulation of cool air.

Check the food is stored properly

- Be acquainted with how to use.

Check the defrost

refrigerator

- Clogged intake port in the

(check discharge and intake port

- Sealing on connecting

related parts if problem

compartment.

refrigerator compartment.

are clogged).

- Damper icing.

- Sealing is not good.

Check icing on the surface of

- Pipe icing.

- Toe much food is stored and clogs

baffle and cool air path (pipe) after

- Discharging
pipe icing.

the discharge port.
- Bad defrosting.

parts.

- Check the damper and replace
it if it has defects.

is caused by faulty
defrosting.

- Check defrost. (After forced

dissembling the container box.

defrosting, check ice in the

Check icing at intake ports of

evaporator and pipes.)

Ill

I:1
m

freezer and refrigerator
compartment.
2) Faulty door or refrigerator
compartment.

Check gasket attached conditions.
Check door assembly conditions.

- Faulty gasket.

- Correct the gasket attachment
conditions and replace it.
- Door assembly and replacement.

Replacement should
be done when it
cannot be repaired.

- Faulty assembly.
3) Overcooling in the refrigerator

Check refrigerator compartment

- Replace faulty parts.

compartment.

is overcooled (when button

- Faulty damper in the refrigerator
compartment.

pressed on "weak").
- Check parts are faulty.

- Faulty MICOM (faulty sensor)
4) Bad defrosting

Check frost on the evaporator

- Heater wire is cut.

after dissembling shroud and fan

- Defective defrost sensor.

grille.

- Defresing cycle.

Check parts related to defrosting.
- Check defrosting, (Check ice on the
evaporator and pipe.)

- Moisture cannot frost
on the evaporator but
can be sucked into the

Check ice on intake port of freezer

refrigerator, being

and refrigerator compartment.

condensed and iced,
interferes with cool air
circulation, and
suppresses sublimation.

5) Customers are not familiar with

Check food interferes with door

this machine.

closing.

Door opens.

Check ice on the ceilings.

High temperature,
and high load.

high moisture,

Be acquainted with how to use.

Problems

Causes

Checks

Ice in the freezer 1) Bad cooling air circulation.

- Check food storage conditions

compartment.

Intake port is colgged in the freezer

visually.(Check

- Surface of fan

compartment.

and discharging

grille.
- Wall of freezer
compartment.

Measures

- Discharging port is Clogged.
- Too much food is stored.

port of cooling air.)

- Check food occupation ratio in
volume(Less

- Bad defrosting.

clogging at intake

Remarks

- Be acquainted with how to use.
- Check defrost (Check ice on the

- Check the parts related
to defrosting if the

evaporator and pipes after forced

problem is caused by

defrosting).

the faulty defrosting.

than 75%).

rrl

- Check frost on the evaporator after

- Cool air

dissembling shroud and fan grille.

discharging port

- Check icing at intake port of

- Basket(rack)

refrigerator compartment.

area.
- Food surface.

2) Bad freezer compartment

- Icing in the

- Faulty gasket

shute.

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bO

door

- Check gasket attachment

- Correct the gasket attachement

conditions.

conditions and replace it.

- Faulty assembly

- Check door assembly conditions.

- Door assembly and replacement.

3) Over freezing in the freezer

- Refrigerator operates pull down.

-Replace defective parts.

compartment.

(Check if it is operated

- Faulty MICOM.

intermittently)
- The Temperature
compartment

of freezer

is satisfactory, but

over freezing happens in the
refrigerator compartment

even

though the notch is set at "weak".

4) Bad defrosting.

- Check frost on the evaporator after

Heater wire is cut.

dissembling shroud and grille.

Faulty defrost sensor.

- Check ice on the intake port in the

Defrosting cycle

refrigerator compartment.

5) User is not familiar with how to
use.

- Check ice on the ice tray.

Door opens.
High moisture

- Check food holds door open.

food(water)

is stored.

- Check parts related to defrosting.
- Check defrosting.(Check

ice on the

evaporator and pipes after forced
defrosting.)

- Be acquainted with how to use.

- Replace when it can not
be repaired.

2-7. Sound
Problems
"Whizz" sound

Causes
1. Loud sound of compressor
operation.

Checks

Measures

1.1 Check the level of the

Remarks

1) Maintain horizontal level.

refrigerator.

2) Replace rubber and seat if they

1.2 Check the rubber seat

are sagged and aged.

conditions (sagging and aging).

3) Insert rubber where hand contact

rrl

reduces noise in the pipe.
2. Pipes resonat sound which is
connected to the compressor.

2.1 Check the level of pipes

4) Avoid pipe interference.

connected to the compressor
and their interference.

motor.

2.2 Check rubber inserting
conditions

6) Adjust fan to be in the center of

in pipes.

bell mouth of the fan guide.

2.3 Touch pipes with hands or screw

7) Leve a clearance between

-driver (check the change of

interfering parts and seal gaps in

sound).

the structures.

O0
CO

8) Reassemble the parts which make
3. Fan operation sound in the freezer
compartment.

3.1 Check fan insertion depth and
blade damage.

structures.

3.4 Check fan motor rubber insertion
and aging conditions.

compressor

compartment.

in the

refrigerator.
4.2 Check drip tray leg insertion.
4.3 Check the screw fastening
conditions at condenser and
drip tray.

pipes and suction pipe touch
freezer shroud.

3.3 Check fan motor.

4.1 Same as fan confirmation

sound.
9) Leave a clearance if evaporator

3.2 Check the interference with

4. Fan operation sound in the

5) Replace defective fan and fan

Problems
Vibration sound.
("Cluck")

Causes
1. Vibration of shelves and foods in
the refrigerator.
2. Pipes interference and capillary
tube touching in the compressor.
compartment.
3. Compressor stopper vibration.
4. Moving wheel vibration.
5. Other structure and parts
vibration.

Checks

Measures

1-1. Remove and replace the
shelves in the refrigerator
1-2. Check light food and container
on the shelves.

with hands.

2-2 Check capillary tube touches
cover back.
3-1 Check compressor

1) Reassemble the vibrating parts
and insert foam or cushion where
vibration is severe.
2) Leave a clearance where parts

2-1. Touch pipes in the compressere
compartment

Remarks

interfere with each other.
3) Reduce vibration with rubber
and restrainer if it is severe.
(especially, compressor

stopper

vibration.

and pipe).

4) Replace compressor stopper if it
vibtates severely.

4-1 Check vibration of front and rear
moving wheels,
5-1 Touch other structures and parts.

O3
4_

Irregular sound.
("Click").

1. It is caused by heat expansion
and contraction of evaporator,

1-1 Check time and place of sound
sources.

Ill

1) Explain the principles of refrigeration
and that the temperature difference

shelves, and pipes in the

between operation and defrosting

refrigerator.

can make sounds.
2) If evaporator pipe contacts with other
structures, leave a clearance between
them (freezer shroud or inner case),

Problems
Sound "Burping"

Causes
It happens when refrigerant expands

(almostthe same at the end of capillary tube.
as animals crying

Checks
- Check the sound of refrigerant at the
initial installation.
- Check the sound when the refrigerator

sound).

starts operation after forced defrosting.
- Check the restrainer attachment
conditions on the evaporator and
capillary tube weld joints.

Measures

Remarks

- Check the restrainer attached on the
evaporator and capillary tube weld
joints and attach another restrainer.
- If it is continuous and servere, insert
capillary tube again (depth:15+3mm)
- Fasten the capillary tube to suction

rrl

pipes or detach in the compressor
m

compartment.
- Explain the principles of freezing
cycles.

Water boiling or

It happens when refrigerant passes

flowing sound.

orifice in accumulator internal pipes by
the pressure difference between

O0
Ol

condenser and evaporator.

- Checkthe sound when compressoris
turned on.
- Checkthe sound when compressoris
turned off.

- Explain the principles of freezing cycles
and refrigerant flowing phenomenon by
internal pressure difference.
- If sound is servere, wrap the
accumulator with foam and restrainer.

Sound of whistle

When door closes, the internal pressure

when door

of the refrigerator decreases sharply

closes.

below atomosphere and sucks air into
lhe refrigerator, making the whistle
sound.

- Check the sound by opening and
closing the refrigerator or freezer doors.

- Broaden the cap of discharge hose for
defrosting in the compressor
compartment.
- Seal the gap with sealant between out
and inner cases of hinge in door.

2-8. Odor
Problems
Food Odor.

Causes
Food (garlic, kimchi, etc)

Checks

Measures

Remarks

Check the food is not wrapped.

Dry deodorizer in the shiny and

Check the shelves or inner

windy place.

wall are stained with food juice.

Store the food in the closed

Check the food in the vinyl wraps.

container instead of vinyl wraps.

- Chedk food cleanliness.

rrl

Clean the refrigerator and set
button at "strong".

Plastic Odor.

Odors of mixed food and plastic

Check wet food is wrapped with

Clean the refrigerator.

odors.

plastic bowl and bag.

Persuade customers

It happens in the new refrigerator.

not to use

plastic bag or wraps with wet food
or odorous foods.

O0
O3

Odor from the
deodorizer.

Odor from the old deodorizer.

- Check the deodorizer odors.

- Dry the deodorizer with dryer and
then in the shiny and windy place.
- Remove and replace the
deodorants.

*Deodorizer : option

2-9. Micom
Problems

Symptom

Causes

Checks

Measures

Bad PCB

All display

Bad connection

Bad connector

Visual check on connector

Reconnect

electric power.

LEDS are off.

between Main PCB

connection from main

connection,

connector.

and display circuit.

PCB to display PCB.

Defective PCB trans.

PCB Trans winding is

DefectivePCB

electric

circuit parts.

Remarks

Check resistance of PCB Trans

Replace PCB Trans

Applicable to

cut.

input and output terminals with

or PCB.

model without

PCB Trans temperature

a tester. (If resistance is infinity,

fuse is burnt out.

trans winding is cut).

Defective regulator IC

Check voltage at input/output

(7812, 7805).

terminals,

PCB electric terminal

Check fuse in PCB electric

fuse is burnt out.

terminal with a tester.

STR Parts are

Check if STR No. 2 and 3 pins

damaged,

are cut when power is off.

dispenser.

Replace regulator.

circuit in circuit

Replace PCB fuse.

Replace parts.

Applicable to
model with
dispenser.

Abnormal

Bad connection

Lead Wire connecting

Check Lead Wire terminals

Reconnect Lead

display LED

between Main PCB

main PCB and display

connecting Main PCB and

Wire and directly

and display circuit.

PCB is cut or connector

display PCB with a tester.

connect defective

operation

terminal connection

contact terminal to

bad.
Defective LED
module.

Defective LED.

Lead Wire.
Check if all LEDs are on when

Replace display

Refer to display

Main PCB Test switch is

PCB.

circuit in circuit

pressed (or when both freezer
key and power freezer key are
pressed at the same time for
more than one second.)

Refer to electric

explanation.

O0
*-4

Ill

explanation.

Problems
Bad cooling,

Causes

Symptom
Freezer
temperature

Compressor
is

does

not start.

high.

Compressor

Checks
Lead Wire

is cut.

Check compressor

Measures
Lead Wire

Remarks

Reconnect Lead

with a tester.

Wire.

Defective compressor

Measure voltage at PCB CON5

Replace relay(RY1

Refer to load

driving relay.

(3&9) after pressing main PCB

and RY14) or PCB.

driving circuit in

test switch once. It is OK if

circuit

voltage is normal.

explanation.

Defective freezer

Defective Freezer

Check resistance of freezer

Replace freezer

Refer to

sensor.

sensor parts.

sensor with a tester.

sensor.

resistance

Ill
m

characteristics
table of sensor in
circuit
Freezer sensor is

Confirm the color of sensor in

Repair main PCB

substituted for other

circuits (main PCB sensor

sensor housing

sensor,

housing).

Defective freezer fan

Fan motor lead wire

Check fan motor lead wire

Reconnect lead

motor.

is cut.

with a tester.

wire.

• Defective door switch

Measure the voltage between

• Replace door

(freezer, refrigerator,

PCB power blue line and fan

explanation.

O0
O0

switch (freezer,

Refer to load
driving circuits in

motor after pressing test switch

refrigerator and

circuit

• Defective fan motor.

of Main PCB. If the voltage is

home bar).

explanation.

• Defective fan motor

normal, it is OK.

home bar).

driving relay.

• Replace fan motor.
• Replace relay(RY5
& RY6) or PCB.

Faulty defrost.

Refer to faulty defrost items in trouble diagnosis

Refer to trouble

functions.

diagnosis
function.

Problems
Bad cooling

Causes

Symptom

Measures

Checks

Check AC damper

Check if AC damper motor and

Reconnect lead

Refrigerator

motor and reed switch

reed switch lead wire are

wire.

temperature.

and lead wire are cut.

cut with a tester.

Check AC damper

Refer to AC damper in parts

Replace AC damper

3art.

repair guide.

or refrigerator control

Wrong

Defective AC Damper.

Remarks

O0
rrl

box Assy.
Check AC damper

Refer to AC damper in parts

Replace relay or

Refer to single

Motor driving relay in

repair guide.

PCB.

motor damper

PCB.

driving circuits
in circuit
explanation.

O0
¢O

Foreign materials in AC

Check AC damper baffle

Remove foreign

damper baffles

visually.

materials.

Ice formation on AC

Check if AC damper Heater

Replace AC damper

damper baffles

wire is cut with a tester.

or refrigerator control
Box Assy.

Defective refrigerator

Check the resistance of

Replace refrigerator

Refer to sensor

sensor

sensor parts.

refrigerator sensor with a tester.

sensor,

resistance
characteristic
table in circuit
explanation.

Refrigerator sensor is

Check the sensor color in the

Repair main PCB

substituted for other

circuit. (main PCB sensor

sensor housing.

sensor.

housing.)

Defective refrigerator

Check if refrigerator sensor

Fix again the

sensor assembly

is not fixed at cover sensor but

refrigerator sensor.

condition.

inner case visually.

Problems
Bad defrost.

Symptom
Defrost is not

Causes
Defrost lead wire is cut.

working,
Defective defrost driving relay.

Checks

Measures

Remarks

Check if defrost lead wire is cut with a

Reconnect Lead

tester.

Wire.

Check the voltage of CON5 (1 and 7)

Replace relay (RY 7

Refer to load

with a tester after pressing main

and RY 14) or PCB.

driving conditions

PCB test switch twice,

check in circuit

If the voltage is normal then it is OK.

explanation.

rrl
m

Defective defrost sensor parts.

Check the resistance of defrost sensor

Replace defrost

Refer to sensor

with a tester.

sensor.

resistance
characteristic
table of circuit
explanation.

Defective

Buzzer

Defective connecting lead wire from

Check lead wire related to door

buzzer

continuously

main PCB to door switch,

switch with a tester.

rings or door

Defective door switch parts.

Refer to door switch in parts repair

¢O
O

opening alarm

Repair lead wire.

Replace door switch.

guide.

does not work.
Defective

Buzzer does

Key input wire is cut or bad connector

Reconnect lead

Refer to display

display button

notring and

terminal contact in main PCB and

wire and replace or

circuit in circuit

key does not

display PCB connecting lead wire.

directly connect bad

explanation.

Check input wire with a tester.

sense even

contact terminal to

bu_onis

lead wire.

pressed.
Key is continuously

depressed due to

structural interference.

Disassemble
visually.

frame display and confirm

Adjust or replace
interfering
structures.

Problems

Causes

Symptom

Trouble mode indication.

Checks

Measures

Remarks

Defective

Buzzer rings

display button.

but key does

indication in

not sense even

function

button is

explanations.

Check trouble diagnosis function.

Repair troubles

Refer to mode

pressed.
Door Buzzer

rrl

Buzzer

Defective connecting lead wire from

Check lead wire associated with door

continuously

main PCB to door switch.

switch.

rings or door

Defective freezer compartment door

Refer to door switch in parts repair

Replace Freezer

opening alarm

switch parts.

guide.

compartment

Bad water/ice

Ice and water

Defective connecting lead wire from

Check Lead Wire associated with lever

dispenser,

are not

Main PCB to lever switch,

switch with a tester.

dispensed.

Defective lever switch parts

Refer to door switch in parts repair guide

Replace lever switch

Defective photo coupler IC parts.

Check voltage change at photo coupler

Replace photo

output terminals with lever switch

coupler IC or PCB.

Repair lead wire.

pressed. It is OK if voltage change is
0V- 5V.

Defective relay associated with ice

Check relay (RY9, RY11, RY12)

Replace defective

dispense (geared motor, cube and

with a tester,

relay.

Check resistance of parts with a tester.

Replace defective

dispenser solenoid).
Defective parts associated with ice
dispense (geared motor, cube and

parts.

dispenser solenoid).
Defective relay associated with water

Check relay (RY10) with a tester

dispense,
Defective parts associated with water
dispenser,

Replace defective
relay.

Check resistance of parts with a tester.

Replace defective
parts.

door

switch.

between

Check model
with dispenser.

does not work.

¢O

Repair lead wire.

TROUBLE
3. Cooling

Cycle Heavy Repair

3-1. The Heavy
NO.
1

DIAGNOSIS

Repair

Standards

Items
Pipe and piping
system opening time.

Welding.

N2 sealed parts.

Refrigeration Evacuation
Cycle.
time
Vacuum
degree

for Refrigerator

Unit
Min.

Nitrogen
Pressure.

Vacuum
piping

Pipe
coupler

Drier replacement.

Leak check.

R134a

Refrigerant

Purposes
To protect
Moisture
Penetration.

Remarks
The opening time should be reduced to a
half of the standards during rain and
rainy seasons (the penetration of water
into the pipe is dangerous).

To protect
oxide scale
formation,

- Refet to repair note in each part.
- R134a refrigerant is more susceptible to
leaks than R12 and requires more care
during welding.
- Do not apply force to pipes before and
after welding to protect pipe from
cracking.
- In case of evaporator parts, if it doesn't
noise when removing rubber cap blow
dry air or N2 gas for more than 1 rain
use the parts.

Confirm N2 Confirm air leaking
To protect
leak.
sounds when
moisture
removing rubber
penetration,
cap.
Sound:usable
No sound:not usable
Min.
More than
To remove
40 minutes,
moisture.
Torr
Below 0.03(ref)

Vacuum

Outlet
(Socket)
Plug
Refrigerant weighing.

with

Standards
Pipe:within 1 hour.
Comp:within
10minutes.
Drier:within
20 minutes.
Weld under
Nitrogen
atmosphere
(N2 pressure:
0.1-0.2 kg/cm 2)

High and low
Pressure sides are
evacuated at the
same time for
models above 200_
Use R134a
exclusive
manifold,
Use R134a
cxclusive.

To protect
mixing of
mineral and
ester oils.

Note:Only applicable to the model
equipped with reverse flow protect
plate.
Vaccum efficiency can be improved by
operating compressor during evacuation.

The rubber pipes for R12 refrigerant shall
be melted when they are used for R134a
refrigerant(causes of leak).

To protect
R12 Refrigerant mixing

R 134a exclusive.

R 134a exclusive
Use R134a
Do not mix
with R12
exclusively.
Weighing
refrigerant.
allowance:+5g
Note:Wintera5g
Summer:+5g
-Use R134aexclusively To remove
for R134arefrigerator the moisture
-Use R12 exclusively from pipe.
for R12 refrigerator
-Replacedrierwhenever
repairing refrigerator
cycle piping.
Detect
-Do not use soapy
water for check.
refrigerant
leak area.
it may be sucked
into the pipe by.

NOTE) Please contact Songso company on +82-53-554-2067

- Do not weight the refrigerant at too hot or
too cold an area.(25°C is adequate.)
- Use copper bombe
Socket:2SV Plug: 2PV R134a
Note:Do not burn O-ring (rubber) during
welding.

-Check oil leak at refrigerant leak area.
Use electronic leak detector if oil leak is
not found.
-The electronic leak detector is very
sensitive to halogen gas in the air. It also
can detect R141b in urethane. Please
practice, therfore, many times before use.

if you have inquiry on heavy repair special facility.

- 92 -

TROUBLE
3-2.

Summary

DIAGNOSIS

Of Heavy

Repair

Process

Contents

Tools

- Cut charging pipe ends and discharge refrigerant from

Filter, side cutters

drier and compressor.
- Use R134a oil and refrigerant for compressor

and drier

Pipe Cutter, Gas welder, N2 gas

- Confirm N2sealing and packing conditions before use.
Use good one for welding and assembly.
- Weld under nitrogen gas atmosphere.(N2

gas pressure:

0.1-0.2kg/cm2).
- Repair in a clean and dry place.
- Evacuate for more than forty minutes after connecting
manifold gauge hose and vacuum pump to high (drier)

Vacuum pump(R134a
exclusively),

Manifold gauge.

and low (compressor refrigerant discharging parts)
pressure sides.
- Evacuation Speed:113l/min.
- Weigh and control the allowance of R134a bombe in a

R134a exclusive bombe(mass

vacuum conditions to be +5 g with electronic scales and

cylinder), refrigerant(R134a)

charge through compressor

manifold gauge, electronic

inlet

(Charge while refrigerator operates).

scales, punching off flier,

- Weld carefully after inlet pinching.

gas welding machine

- Check leak at weld joints.

Electronic Leak Detector,
Driver(Ruler).

Minute leak: Use electronic leak detector
Big leak: Check visually or fingers.

Note:Do not use soapy water for check.
- Check cooling capacity
0_Check radiator manually to see if warm.
_ Check hot line pipe manually to see if warm.
@ Check frost formation on the whole surface of the
evaporator.
- Remove flux from the silver weld joints with soft brush
or wet rag.(Flux may be the cause of corrosion and
leaks.)
- Clean R134a exclusive tools and store them in a clean
tool box or in their place.
- Installation should be conducted in accordance with the

I111_1

standard installation procedure.(Leave

space of more

than 5 cm from the wall for compressor

compartment

cooling fan mounted model.)

- 93 -

Copper brush, Rag, Tool box

TROUBLE

DIAGNOSIS

3-3. Precautions

Heavy

During

Repair

Items

Precautions

1. Use of tools.

1) Use special parts and tools for R134a.

2. Removal of retained

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

refrigerant.

(If not, oil will leak inside.)
2) Remove retained refrigerant by cutting first high pressure side (drier part) with a nipper and
then cut low pressure side. (If the order is not observed, oil leak will happen.)
Evaporator

_side

3. Replacement of drier.

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

4. Nitrogen blowing

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

welding.
5. Others.

(Nitrogen pressure : 0.1-0.2

kglcm2.)

1) Nitrogen or refrigerant R134a only should be used when cleaning inside of cycle pipes
inside and sealing.
2) Check leakage with an electronic leakage tester.
3) Be sure to use a pipe cutter when cutting pipes.
4) Be careful not the water let intrude into the inside of the cycle.

- 94 -

TROUBLE

DIAGNOSIS

3-4. Practical Work For Heavy Repair
Precautions

Items
1. Removal of residual

Evaporator

refrigerant.
KEYPOINTING
Compressor

_/w
/

R_enser
Intake

pressure side
_

Observe the sequence for
removal of refrigerant.
(If not, compressor oil may
leak.)

Drier

t High pressure side
--_ _ ......

1) Remove residual refrigerant more than 5 minutes later after turning off the refrigerator.
( If not, compressor

oil may leak inside.)

2) Remove retained refrigerant slowly by cutting first high pressure side (drier part) with a
nipper and then cut low pressure side.
2. Nitrogen blowing
Evaporator

welding.

KEYPOINTING

side

Welding without nitrogen
blowing produces oxidized
scales inside a pipe, which
affect on performance and
reliability of a product.

Intake

When replacing a drier:
Weld (T) and (_) parts by blowing nitrogen(0.1-0.2kg/cm

2) to high pressure side after

assembling a drier.
When replacing

a compressor:

Weld (_) and @ parts by blowing nitrogen to the low pressure side.
Note) For other parts, nitrogen blowing is not necessary because it does not produce oxidized
scales

inside

pipe because of its short welding time.

3. Replacement of drier.
* Unit : mm

KEYPOINTING
Be sure to check the
i

Filter

inserted length of capillary
tube when it is inserted. (If
too much inserted, a
capillary tube is clogged by
a filter.)

Inserting a capillary tube
Measure distance with a ruler and put a mark(12+3/0)on the capillary tube.
mark, and weld it

- 95-

Insert tube to the

TROUBLE

DIAGNOSIS

Items

Precautions

4.Vacuum degassing.

Evaporator
Suction pipe
Compressor
Dner

Low

pressure

High

Blue

pressure

Red

VaCCl

KEYPOINTING
- If power is applied
during vacuum
degassing, vacuum
degassing shall be
more effective.

Pipe Connection
Connect a red hose to the high pressure side and a blue hose to the
low pressure side.
Vacuum

Sequence

Open (T), (_) valves and evacuate for 40 minutes. Close valve (T).
5.Refrigerant

- Operate compressor
while charging
refrigerant. (It is
easier and more
certain to do like
this.)

charging.
Charging

sequence

1) Check the amount of refrigerant supplied to each model after completing vacuum
degassing.
2) Evacuate bombe with a vacuum pump.
3) Measure the amount of refrigerant charged.
Measure the weight of an evacuated bombe with an electronic scale.
- Charge refrigerant into a bombe and measure the weight. Calculate the weight of
refrigerant charged into the bombe by subtracting the weight of an evacuated bombe.
E_

an evacuated
R134a

KEYPOINTING

Indicate the weight of

Be sure to charge
the refrigerant at
around 25°C.

bombe

_)_

Be sure to keep -5g
in the winer and
+5g in summer
I Calculation

of amount

of refrigerant

charged

]

the amount of refrigerant charged= a weight after charging
a weight before charging (a weight of an evacuated cylinder)

- 96 -

TROUBLE

DIAGNOSIS

Items

Precautions
Evaporator

Compressor

Condenser
Bombe
4) Refrigerant Charging
Charge refrigerant while operating a compressor

as shown above.

5) Pinch a charging pipe with a pinch*off plier after completion of charging.
6) Braze the end of a pinched charging pipe with copper brazer and take a gas leakage test
on the welded parts.
6. Gasqeakage test
7. Pipe arrangement
in each cycle

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

Check each pipe is placed in its original

, place before closing a cover back-M/C

after completion of work. Particularly

•_

control the size of Joint Drain Pipe

['1_
LI

I _

_._i

ubber

3-5. Standard Regulations For Heavy Repair
1) Observe the safety precautions for gas handling.
2) Use JIG (or wet towel) in order to prevent electric wires from burning
break and accident.)

during welding. (In order to prevent insulation

3) The inner case shall be melted and insulation material (polyurethane)
case parts.

shall be burnt if not cared during welding inner

4) The copper pipe shall be oxidized by overheating

if not cared during welding.

5) Not allow the aluminum pipes to contact to copper pipes. (In order to prevent corrosion.)
6) Observe that the inserted length of a capillary tube into a drier should be 12 ,;mm.
Drier

SievesM°lecular',,,,,,_
,_//

I _

Molecular_ Pipe

7) Make sure that the inner diameter should not be distorted while cutting a capillary tube.
8) Be sure that a suction pipe and a filling tube should not be substituted each other during welding. ( High efficiency
pump.)

- 97 -

TROUBLE

DIAGNOSIS

3-6. Brazing Reference Drawings

PIPE ASSY, HOT LINE
(Freezer)

PIPE ASSY, HOT LINE
(Refrigerator)

Copper Brazer
Copper

CAPI - TUBE

DRIER ASSY
Copper
Brazer

PIPE ASSY, SUCTION
Copper
Brazer

JOINT\CONDENSER ASSY,WIRE
Copper Brazer

"Copper Brazer

- 98 -

Coppper Brazer

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

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

sound

• 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.

- 99 -

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
(applicable to model with ice maker

• Explain the procedure and principles of ice maker operation.
• Automatic ice maker repeats the cycle of water supplying _ icemaking _ ice

- Noise produced by ice dropping
and hitting ice bank.
- Noise from motor sounds "Whizz".

ejection. When water is supplied, the water supply valve in the machine room
makes sounds like "Whizz" and water flowing also makes sound. When water
freezes to ice, freezing sounds such as "click, click" are heard. When ice is
being ejected, sounds like "Whizz" produced by a motor to rotate an ice tray
and ice dropping and hitting ice bank sounds are also heard.

Noise 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.

- 100 -

TROUBLE

DIAGNOSIS

4-2. Measures for Symptoms on Temperature
Checks and Measures

Problems

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.

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.

• 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).

• 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.

- 101 -

TROUBLE

DIAGNOSIS

4-3. Odor and Frost
Checks and Measures

Problems

Odor in the refrigerator compartment.

• 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

Frost in ice tray.

• 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.

• 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.

- 102 -

TROUBLE

DIAGNOSIS

4-5. Others
Problems

The refrigerator

case is hot.

Checks and Measures

• 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 drawen

• 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.)
• 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.

- 103 -

HOW TO DISASSEMBLE
1. DOOR
1) Remove
supply

lower cover and then disconnect
tube in the lower part

of freezer

water
door.

• Pull a water supply tube @ forward while pressing (_) part
to disconnect water supply tube as shown below.

2) Remove

a freezer

(3) Disconnect upper hinge 0 from a hinge supporter @
by grasping the front part of upper hinge and lifting up
(Hinge Assy, U) in arrow direction _) and pull forward
in arrow _) direction. Be careful as the door may be
fallen down.

door.

(1) Loosen hinge cover screw of freezer door and remove
cover.
Disconnect all connecting lines except earthing cord.

_Cover,

AND ASSEMBLE

Hinge

(4) Lift up the freezer door (_) in arrow direction and
disconnect the door from the lower hinge Q. Don't pull
a door forward.

Connecting
_ Line

/
Earthing
Cord
(2) Turn hinge lever in arrow (_ direction until it is
loosened and take it out in arrow (_ 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

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.

- 104 -

HOW TO DISASSEMBLE
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.

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.

4. ICEMAKER

ASSY

Handle, Deco
1. Dispenser

Model

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.
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.

(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) Turn screw in arrow direction with a cross driver and
disconnect.

Hook
Bracket,

Ice Maker

Screw

Ice Maker Unit
Handle, Piece

Lever
Tray, Ice
Insulation

3. SHROUD,

GRILLE

FAN

1) Loosen two screws after disconnecting
grille fan(U) with a balde screwdriver.

Sensor _
a cap screw of a

Cover,

2) Disassembly of a grille fan(U) : Pull forward after
opening hook at _ part with a blade screwdriver.

Sensor

Note : When the ice tray is not horizontal after assembly,
assembly must be wrong. Check and assemble
again.

3) Disconnect housing (_ of a grille fan (L) from the main
body.

- 105-

HOW TO DISASSEMBLE
5. DISPENSER

AND ASSEMBLE
4) Loosen four screws with a phillips screwdriver
funnel Assy to disconnect.

1) Disconnect button assembly by pulling down until it

and pull a

stops and then pulling forward.
Funnel Assy

'
'

Button

\..<

Funne
Assy

_:::__'

5) Duct cap Assy is disconnected if hold lever connecting
screw is loosened with a phillips screwdriver.
2) Remove display frame Assy by making a gap between a
display frame Assy. and funnel Assy. with a balde
screwdriver and pulling it forward. The cover dispenser
is fixed with a hook.

Solenoid Assy
/

II
Cap Assy, Duct

3) Display Assy can be disconnected by pressing the
upper part of a cover dispenser and pushing a display
Assy. after disconnecting display frame Assy. housing.

6) For assembling a duct cap Assy., 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 Assy working part.

Heater, Sheet

Solenc_"

- 106 -

'L'II'_A_
_Lever,

Dispenser

HOW TO DISASSEMBLE

AND ASSEMBLE

7) Dispenser Related Parts

< @ Cap Assy, Duct Detailed Drawings>

- 107-

FRAME ASSY, DISPLAY

COVER, DISPENSER

PWB(PCB) ASSY, DISPLAY

FUNNELASSY

SWITCH, MICRO

FRAME, FUNNEL

LEVER(SWITCH)

FUNNEL

RUBBER, FUNNEL

SWITCH, ROCKER

SOLENOID ASSY

SPRING

HOLDER, LEVER

CAP, DUCT

LEVER, DISPENSER

RUBBER, CAP

BUTTON ASSY

BUTTON

HOLDER, BUTTON

DECO, DRAIN

HOW TO DISASSEMBLE
6. WATER TANK AND WATER LINE

AND ASSEMBLE
%2.

Home

1) Disconnect

• The water tank at back and lower part of a refrigerator is
fixed by one screw and has a capacity containing 7
glasses (180cc per glass) of cold water. It will take time
to make more cold water in the tank.

Bar parts

disassembly

and assembly

H/Bar Door Assy (D

2) Loosen two screws (_) attached on the refrigerator
compartment door with a phillips screwdriver. And
loosen 4 screws @ and two screws (_). Pull HIBar door
Assy (_), forward to disassemble,

* The first portion of dispensed water is not cold even
though the refrigerator is working. In this case,
dispense ice first in the cup and then water to make a
cold water.

3) Loosen two screws _), _) fixed on HIBar door Assy, and
two screws (_) with a cross driver to disassemble arm
Assy,
4) Assemble parts by performing the disassembly in
reverse order.

7. HOME BAR
Note : • Assemble carefully parts (Z), (_, @ until they are
fixed firmly when assembling them.
• Adjust exteriorgap by adjusting parts _), (_) and

7-1. Home Bar related parts

when assembling.

1.8

oT
.5

1 DOORASSY, H/BAR

7 SCREWTAPTITE(ARM)

2 SEREW,TAPTffE(HINGE-H/B) 8 ARM ASSY
3 SCREWMACHINE(HINGE-H/B)9 STOPPER
4 HINGEASSYH/BAR

10 SCREW,
MACHINE(STOPARiv_H/B)

5 HINGEASSYH/BAR

11 SCREWMACHINE(HINGE-H/B)

6 CAP,ARM

- 108 -

EXPLODED
FREEZER

DOOR

VIEW

PART: GR-P247,

GR-P207,

GR-L247,

GR-L207

- 109 -

EXPLODED
Ref No. : GR-L247,
REFRIGERATOR

VIEW
GR-L207,

DOOR

GR-B247,

GR-B207

PART

* : Optional part

- 112 -

EXPLODED
FREEZER

VIEW

COMPARTMENT

* : Optional part

- 113 -

EXPLODED
REFRIGERATOR

VIEW

COMPARTMENT

: Optional part

I
I

-114-

EXPLODED

VIEW

ICE & WATER PART
: Optional part

- 115-

EXPLODED
MACHINE

VIEW

COMPARTMENT

: Optional part

- 116 -

EXPLODED
DISPENSER

VIEW

PART

I
I

L.._.

- 117 -

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LG LRSP2031BS User Manual REFRIGERATOR Manuals And Guides L0301007

LG Side by Side Refrigerator Manual L0301007 LG Side by Side Refrigerator Owner's Manual, LG Side by Side Refrigerator installation guides

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