DOWNLOAD LG GR-429GVCA QVJA Service Manual ↓ Size: 3.89 MB | Pages: 60 in PDF or view online for FREE

Model
GR-429GVCA QVJA
Pages
60
Size
3.89 MB
Type
PDF
Document
Service Manual
Brand
Device
Refrigerator
File
gr-429gvca-qvja.zip
Date

LG GR-429GVCA QVJA Service Manual ▷ View online

- 21 -
ASSEMBLY JAWS
BOLT
TOOL
TUBE
LOKRING
LOKRING
JOINT
Figure  23. LOKRING
Figure  24. LOKRING TOOL
1. FUCTION EXPOSITION
1) FUNCTION
(1) When the appliance is plugged in, it is set to 2°C for the Refrigerator and -18°C for the Freezer. You can adjust the
Refrigerator and the Freezer control temperature by pressing the FRZ. Temp button or REF. Temp button.
(2) When the power is initially applied or restored after a power failure, it is automatically set to “-18°C/2°C” (in the case of
GOOD MDL, it is automatically set to “3/3”)
• MULTI Air Flow SETTING
1) If door open, graphic is rotated in A1 
A2 
A3 
A4 
A5 continuously, and this
status is maintained during door open.
2) Door close and after 1 minute, the rotation of graphic stops.
• Back Light SETTING
1) When power is initially applied or restored after a power failure, the back light is on for 1minute.
2) In the status of back light’ off, if any button is pushed or door open, the only back light is on for 20 seconds and the
function of button is not worked.
MICOM FUNCTION & PCB CIRCUIT EXPLANATION
- 22 -
Display Panel
Temperature Adjustment Button
for Freezer Compartment
Temperature Adjustment Button
for Refrigerator Compartment
Temperature Adjustment Button
for Miracle Zone Compartment
Lock Button
Vacation Button
Super Freezer
1
2
3
4
5
MIN.
REF
TEMP
MAX.
5
4
3
2
1
MAX.
FRZ
TEMP
SUPER
FRZ.
MIN.
VAC.
A1
A2
A3
A4
A5
BEST(LCD)
GOOD
BETTER (LED)
Control range of Freezer 
: -15°C ~ -23°C
Control range of Refrigerator
: 6°C ~ -1°C
2) MIRACLE ZONE (BEST MODEL)
(1) You can select optimum temperature range depending on types of food stored.
(2) 4 step of temperature selection including 2°C, -1°C, -3°C and -7°C is available.
3) SUPER FREEZING
(1) It is the function which increases the cooling speed of freezer by continuously operating compressor and freezer fan. 
When it’s button is pressed, GRAPHIC is on.
(2) Whenever selection switch is pressed, selection/release (GRAPHIC on/off) changes in turn.
(3) If power is on after power cut, SUPER FREEZING function is canceled.
(4) It shall be cancelled after compressor and freezer fan continuously operate for three hours.
(5) If defrost starts during SUPER FREZZING, SUPER FREZZING operates for the rest of time after defrost is complete
when SUPER FREZZING operation time is less than 90 minutes. If SUPER FREZZING operated for more than
90minutes, the SUPER FREZZING shall operate for two hours before it stops.
(6) If SUPER FREZZING is pressed during defrost, SUPER FREZZING GRAPHIC is on but SUPER FREEZING operation
starts seven minutes after defrost is complete and it shall operate for three hours.
(7) If SUPER FREZZING is selected within seven minutes after compressor has stopped, the compressor (compressor
delays seven minutes) shall start after the balance of the delay time.
(8) If VACATION button is pressed during the SUPER FREEZING, the SUPER FREEZING function is immediately released.
4) VACATION FUNCTION
(1) When pressing the VACATION button, the VACATION GRAPHIC is on and its function is operated.
(2) In the status of VACATION mode, regardless of current notch, freezer is controlled at –13°C and refrigerator is controlled at 7°C. 
(but, above temperature is displayed in the case of BEST model.)
(3) In the status of VACATION mode, any other button except VACATION button is not worked.
(4) When pressing the VACATION button again, VACATION GRAPHIC is off and its function is released. 
(Here, freezer and refrigerator is controlled at previous setting temperature.)
5) DOOR OPEN ALARM
(1) Buzzer shall give warnings if freezer, refrigerator, or home bar door is open for more than one minute.
(2) Buzzer shall give warnings three times in 0.5 second interval, then three times on/off in 0.5 second interval in every thirty
seconds.
(3) Warnings are ceased when freezer, refrigerator and home bar doors are all closed.
6) BUZZER SOUND
(1) When the button on the front Display is pushed, a Ding ~ sound is produced. 
(Refer to the BUZZER OPERATION CHECK)
- 23 -
CLOSE
CLOSE
OPEN
CLOSE
CLOSE
OPEN
CLOSE
BUZZER
within
1 minute
1 Min
30 Sec
500 ms
FREEZER
REFRIGERATOR
DOOR
7) REFRIGERATOR LAMP AUTO OFF
(1) To protect the risk of lamp heat, when Refrigerator door opens for 7 min., refrigerator lamp is auto off.
8) DEFROSTING (REMOVING FROST)
(1) Defrosting starts each time the COMPRESSOR running time reaches 7 hours.
(2) For initial power on or for restoring power, defrosting starts when the compressor running time reaches 4hours.
(3) Defrosting stops if the sensor temperature reaches 8°C or more. If the sensor doesn’t reach 8°C in 2hours, the defrost
mode is malfunctioning. (Refer to the defect diagnosis function.)
(4) Defrosting won’t function if its sensor is defective(wires are cut or short circuited)
9) ELECTRICAL PARTS ARE TURNED ON SEQUENTIALLY
Electrical parts such as COMP. defrosting heater. freezer FAN. etc. are turned on in the following order to prevent noise and
parts damage. Several parts are started at the dame time at initial power on and are turned off together when TEST is
completed.
NOTE) (1) In the case of BEST/ BETTER model, dispenser heater is optional. 
(2) Damper heater is only applied in the BEST model. 
(3) Damper heater and Dispenser heater are not in the GOOD model.
- 24 -
OPERATION STATE
ORDER
Temperature of Defrosting
Sensor is 45°C or more 
(when unit is newly 
purchased or when moved)
Temperature of defrosting
sensor is lower than 45°C 
(when power cuts, SERVICE)
Reset to normal operation from
TEST MODE
POWER
in 1/2 second
COMP
in 1/2 second
FREEZER FAN
ON
ON
ON
TOTAL LOAD
in 7 minute
COMP
in 1/2 second
FREEZER FAN
OFF
ON
ON
POWER
in 1/2 second
DEFROSTING
in 5 second
DEFROSTING
ON
HEATER ON
HEATER OFF
in 1/2 second
DAMPER 
in 3 second
DAMPER 
in 1/2 second
HEATER ON
HEATER OFF
DISPENSER 
in 3 second
DISPENSER 
in 1/2 second
COMP
HEATER ON
HEATER OFF
ON
in 1/2 second
FREEZER 
FAN ON
Initial power on
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