LG GR-B207WVQ.CSWQAGE Bedienungsanleitung

CAUTION

PLEASE READ CAREFULLY THE SAFETY PRECAUTIONS OF THIS BOOK

BEFORE CHECKING OR OPERATING THE REFRIGERATOR .

REFRIGERATOR

SERVICE MANUAL

http://biz.lgservice.com

MODEL:GR-B207WVQ.CSWQAGE Color:Super White

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

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

PARTS IDENTIFICATION ........................................................................................................................................................5

HOW TO INSTALL THE REFRIGER ATOR .......................................................................................................................... 6

HOW TO ADJUST DOOR HEIGHT OF THE REFRIGERATOR ........................................................................................ 6

HOW TO INSTALL WATER PIPE........................................................................................................................................ 6

HOW TO CONTROL THE AMOUNT OF WATER SUPPLIED TO THE ICEMAKER ......................................................... 7

MICOM FUNCTION .............................................................................................................................................................. 8-12

EXPLATION FOR MICOM CIRCUIT..................................................................................................................................... 13

EXPLANATION FOR PWB CIRCUIT ................................................................................................................................. 13

COMPENSATION CIRCUIT FOR WEAK-COLD, OVER-COLD AT FREEZING ROOM.................................................... 14

PWB PARTS DRAWING AND LIST ................................................................................................................................... 35

PWB CIRCUIT DIAGRAM .................................................................................................................................................. 25

CIRCUIT................................................................................................................................................................................ 26

TROUBLE DIAGNOSI S ........................................................................................................................................................ 27

TROUBLE SHOOTING ...................................................................................................................................................... 37

FAULTS ............................................................................................................................................................................ 45

COOLING CYCLE HEAVY REPAIR ................................................................................................................................. 57

HOW TO DEAL WITH CLAIMS........................................................................................................................................ 65

HOW TO DISASSEMBLE AND ASSEMBL E ..................................................................................................................... 66

DOOR............................................................................................................................................................................... 66

HANDLE ........................................................................................................................................................................... 67

SHROUD, GRILLE FAN ................................................................................................................................................... 67

EXPLODED VIEW .............................................................................................................................................................. 68-72

CONTENTS

- 2 -

Please observe the following safety precautions in order to

use safely and correctly the refrigerator and to prevent

accident and danger during repair.

1. Be care of an electric shock. Disconnect power cord

from wall outlet and wait for more than three minutes

before replacing PWB parts. Shut off the power

whenever replacing and repairing electric components.

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

five minutes after power cord was disconnected from the

wall outlet.

3. Please check if the power plug is pressed down by the

refrigerator against the wall. If the power plug was

damaged, it may cause fire or electric shock.

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

use its own individual electrical outlet for 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.

7. Make sure the hook is correctly engaged.

Remove dust and foreign materials from the housing

and connecting parts.

8. Do not fray, damage, machine, heavily bend, pull out,

or twist the power cord.

9. Please check the evidence of moisture intrusion in the

electrical components. Replace the parts or mask it

with insulation tapes if moisture intrusion was

confirmed.

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

confirm the operation of geared motor.

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

reconstruct the refrigerator for themselves. It may

cause accident, electric shock, or fire.

12. Do not store flammable materials such as ether,

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

refrigerator.

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

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

refrigerator.

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

freezer. The contents shall freeze and break the glass

bottles.

15. When you scrap the refrigerator, please disconnect the

door gasket first and scrap it where children are not

accessible.

WARNINGS AND PRECAUTIONS FOR SAFETY

- 3 -

SPECIFICATIONS

- 4 -

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 894(W)

725(D)

1753(H)

NET WEIGHT (kg) 110

COOLING SYSTEM Fan Cooling

TEMPERATURE CONTROL Micom Control

DEFROSTING SYSTEM Full Automatic

Heater Defrost

INSULATION Cyclo-Pentane

COMPRESSOR P.T.C. Starting Type

EVAPORATOR Fin Tube Type

CONDENSER Wire Condenser

REFRIGERANT R134a (180g)

LUBRICATING OIL FREOL @10G (310 cc)

DRIER ID 0.83

ITEMS SPECIFICATIONS

CAPILLARY TUBE MOLECULAR SIEVE XH-7

FIRST DEFROST 4 - 5 Hours

DEFROST CYCLE 13 - 15 Hours

DEFROSTING DEVICE Heater, Sheath

ANTI-FREEZING HEATER Damper Heater

FREEZER LAMP 40W (1 EA)

REFRIGERATOR LAMP 40W (1 EA)

3. Model spec.

3571

PARTS IDENTIFICATION

- 5-

Frame Display

Cover PWB

2. Ref No.

Conversion switch

(Meats/Vegetables)

1. How to Adjust Door Height of Refrigerator

Make the refrigerator level first. (If the refrigerator is not installed

on the flat floor, the height of freezer and refrigerator door may

not be the same.

1. If the height of freezer door is lower than that of

refrigerator compartment :

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

refrigerator compartment :

Insert a driver into the groove of adjusting screw

and rotate driver in arrow direction (clockwise) until the

refrigerator becomes horizontal.

Insert a driver into the groove of adjusting screw

and rotate driver in arrow direction (clockwise) until the

refrigerator becomes horizontal.

HOW TO INSTALL REFRIGER ATOR

- 6-

Adjusting

Driver

Even if the height can not be aligned by

using the height adjustment screw,insert

the transparent sheet supplied with the

product.

Bottom bracket

Transparent sheet

Bottom hinge

Separate the door with the lower height,

use the (+) type screwdriver to unscrew

the screw at the botton hinge as shown

at figure , insert the transparent sheet

between the bottom hinge and the bottom

bracket,and then fix it with the screw as

shown at figure .

Insert more transparent sheets enough to

align the height.(4 sheets are supplied in

total.)

Install Water Filter (Applicable to some models only)

Before Installing water filter

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

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

to the direction ( ) and move it to the lower part.

2. Lamp in refrigerator compartment

Installing water filter

1. Initial installation of water filter

Remove the filter substitute cap by turning it

counterclockwise ( ) by 90 degrees and pulling it down.

Note : Keep it 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.

2. Replacement of water filter

While holding the lower part of the filter, turn it

counterclockwise ( ) by 90 degrees and pull it down.

Note : Check that the guideline and the loosening

indication line are aligned.

After installing water filter

Reassemble the lamp cover and the top shelf of the

refrigerator. To place the top shelf of the refrigerator, raise

the front part of the shelf a bit so that the hook of the shelf

is fit into the groove.

In order to clean the water filter system, drain water for

about 3 min.

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

water droppings on the shelf under the filter.

Control box

Aligning with the guide line

and the fastening indication line

Aligning with the guide line

and the loosening indication line

Control box

Separation

of red cap

Adhesion

sticker

Substitute

cap

HOW TO INSTALL REFRIGER ATOR

- 7-

Insert the tool into the marked area ( ) and

push the tool to disconnect.

Use the tool with the flat tip such as ( - ) screw

driver.

Turn the bulb counterclockwise. Max. 40 W

bulb for refrigerator is used and can be

purchased at a service center.

1. Monitor Panel

MICOM FUNCTION

- 8-

2. Description of Function

2-1. Funnction of Temperature Selection

* The temperature can vary ±3 °C depending on the load condition. *( ) : 127V/60Hz, 110~115V/60Hz, 115V/60Hz Rating ONLY.

*< > : TAIBEI

1. When power is initially applied or reapplied after power cut, “Medium” is automatically selected.

2. When the temperature selection switch in the freezer and refrigerator compartments is pressed, the light is on in the

following sequence:

"Middle" "Middle Strong" "Strong" "Weak" "Middle Weak"

3. The temperature setting condition of freezer and refrigerator compartments shall not be indicate in the standard model

when refrigerator or home bar door is closed.

Divisio n Power Initial ly On 1st Pres s 2nd Pres s 3th Pres s 4th Press

19 °C 3 °C

22 °C 2 °C

23 °C 0 °C

15 °C 6 °C

17 °C 4 °C

Change of

IndicationLamp

Temperature

Control

Middle Middle Strong Strong Weak Middle Weak

-19 °C

(-18 °C)

<-19 °C>

3 °C

<2 °C>

1.5 °C

<1 °C>

0 °C

<0 °C>

6 °C

<4.5 °C>

4.5 °C

<3 °C>

-21 °C

(-21 °C)

<-21 °C>

-23 °C

(-22 °C)

<-22 °C>

-15 °C

<-16.5 °C>

-17 °C

<-18 °C>

Freezer

Control

Refrigeration

Control

1. 88 LED

Function display board

FREEZER

Temperature adjustment botton

for freezer compartment

Temperature adjustment botton

for refrigerator compartment

Express freezer Lock button

EXPRESS FRZ.

FRZ

REFRIGERATOR

CHILD LOCK

3secs

2-2. 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).

2-3. Control of M/C room fan motor

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

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

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

display).

2-4. Door opening alarm

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

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

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

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

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

released.

2-5. Ringing of button selection buzzer

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

2-6. Ringing of compulsory operation, compulsory frost removal buzzer

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

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

1.8 second three times.

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

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

MICOM FUNCTION

- 9-

Doors of freezing /

cold storage room

or home bar

BUZZER

Closing

Opening

Within

a minute

A minute

seconds

Opening

Closing Closing

3 Times 3 Times 3 Times 3 Times

2-7. 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).

2-8. 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.

MICOM FUNCTION

- 10-

Function Load Operation Sequence Remark

ewo

plait

inIg

niylpp

anI E

DOM

SET

When temperature

of a frost removal

sensor becomes

more than 45°C

(In purchase,

movement)

If error occurs

during operation,

initial operation is

not done.

If pressing switch

once more in the

test mode 2 or

temperature of a

frost removal

sensor is more

than 5°C, it

immediately

returns to the test

mode for initial

operation

(COMP operates

after 7 minutes).

When

temperature of a

frost removal

sensor becomes

less than 45°C

(In power failure,

service)

Test mode 1

(Compulsory

function)

Test mode 1

(Compulsory

function)

Test mode 2

(Compulsory frost

removal)

POWER

COMP

F-FAN

C-FAN

F-FAN

C-FAN

F-FAN

C-FAN

F-FAN

C-FAN

OFF

STEP

MOTOR

DAMPER

STEP

MOTOR

DAMPER

STEP

MOTOR

DAMPER

OPEN

STEP

MOTOR

DAMPER

HOME

BAR

HEATER

POWER

FROST

REMOVAL

HEATER

HOME

BAR/

PIPE

HEATER

OFF

HOME

BAR/

PIPE

HEATER

TEST

S/W

(Press

Once)

COMP

TEST

S/W

(Press

3 times)

0.5

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.5

sec.

0.3

sec.

FROST

REMOVAL

HEATER

OFF

FROST

REMOVAL

HEATER

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

5.6

sec.

OTHER

LOAD

OFF

F-FAN

C-FAN

F-FAN

C-FAN

OFF

STEP

MOTOR

DAMPER

OPEN

TEST

S/W

(Press

2 times)

COMP

0.3

sec.

0.3

sec.

0.3

sec.

OFF

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