LG GR-642BEPF Service Manual ▷ View online
7-1-8 DEFROSTING
1. If the accumulated time for the operation of the COMPRESSOR is meet with 7 hours, the DEFROST HEATER is started.
2. The First defrosting is performed at 4 hours(compressor on) later since the power is on.
3. If DEF-SENSOR is not reach to 13˚C after 2 hours' operation of the defrosting heater, it represents a defrosting
trouble.(See the trouble representing function)
4. If DEF-SENSOR is short or open, defrosting is not performed.
7-1-9 ORDERLY OPERATION OF ELECTRIC PARTS
To avoid NOISE and DAMAGE, the items containing an electric parts such as COMP, HEATER and FAN MOTOR operate in
order as follows.
order as follows.
OPERATION STATE
OPERATION ORDER
When DEF-SENSOR
temperature is over 13˚C
(When purchasing or moving)
temperature is over 13˚C
(When purchasing or moving)
When DEF-SENSOR
temperature is below 13˚C
(When power failure or
servicing)
temperature is below 13˚C
(When power failure or
servicing)
When returning to normal state
from TEST MODE
from TEST MODE
- 20 -
(2800RPM)
POWER
COMP
FAN
ELEC.DAMPER
ON
ON
ON
ON
after 0.5 sec.
after 0.5 sec.
after 0.5 sec.
All Elec. Parts
ELEC.DAMPER
COMP
FAN
OFF
ON
ON
ON
after 0.5 sec.
after 0.7 min .
after 0.5 sec.
POWER
DEFOST
DEFOST
ON
HEATER ON
HEATER OFF
after 0.5 sec.
after 0.5 sec.
COMP
FAN
ELEC.DAMPER
ON
ON
ON
after 0.5 sec.
after 0.5 sec.
after 0.5 sec.
When plugged at first
7-1-10 SELF-TEST
1. Function to make SVC easy in case of occurring a trouble in the product.
2. When occurring a trouble, if the button is pushed, but the function could not operate.
3. If a trouble release during the representation of trouble, a refrigerator performs the normal function.
4. To represent a trouble CODE, it use FRZ. TEMP on operating panel. If ERROR occurs, the other LEDs except FRZ.
TEMP LEDs are all off.
FRZ.TEMP LEDs
OPERATION IN TROUBLE'S OCCURING
NO.
ITEMS
F1 F2 F3 F4
DESCRIPTION
COMP
FAN
1
F-SENSOR
abnormal
Connector open or short.
O
O
2
SUPER FROST
SENSOR
NOTE1)
Connector open or short.
O
O
abnormal
3
R1-SENSOR
abnormal
Connector open or short.
O
O
4
R2-SENSOR
abnormal
Connector open or short.
O
O
5
DEF-SENSOR
abnormal
Connector open or short.
O
O
Defrost heater,
Temp. fuse open or
Temp. fuse open or
6
DEFROST
disconnection.
function
(Displayed after at least
O
O
O
is abnormal
4 hours from the
trouble's occurring.)
trouble's occurring.)
Damper motor reed s/w
open or short
open or short
7
ELEC.DAMPER
(Displayed after at least
O
O
abnormal
2 minutes from the
trouble's occurring.)
trouble's occurring.)
- 21 -
FRZ. TEMP
REF. TEMP
SUPER FREEZE
SUPER COOL
FOCUSED
COOLING
COLD
COLDEST
COLDEST
A
F4
F3
F2
F1
LEDS OF ERROR CODE
ELEC.
DAMPER
DAMPER
DEFROST
HEATER
HEATER
15 minutes On/
15 minutes off
15 minutes off
No relation in ICE
MAKING SYSTEM
MAKING SYSTEM
Check every
1 hour and
if normal,
initialize.
1 hour and
if normal,
initialize.
No
defrosting.
defrosting.
Two baffle
10 minutes OPEN/
15 minutes CLOSE
10 minutes OPEN/
15 minutes CLOSE
2400RPM
2400RPM
2400RPM
2400RPM
2400RPM
2400RPM
NOTE1) If 1 sec. pass after pressing the SUPER FREEZE button and the FRZ. TEMP button together in normal operation,
operates as follow.
If normal, LEDs on the operating panel is all on.
If abnormal, LEDs are all on except part .
If abnormal, LEDs are all on except part .
A
7-1-11 TEST FUNCTION
1. Function to CHECK the testing function of PCB and refrigerator and to find where the trouble.
2. The test terminal is on the MAIN PCB of refrigerator.
Press the test button, and TEST FUNCTION operates for 2 hours regardless of TEST MODE.
3. If plug in a Refrigerator after letting the TEST terminal in SHORT, not TEST FUNCTION but the normal operation is
performed. If resetted during the TEST operation, TEST FUNCTION is released.
4. At the end of TEST MODE, pull out the power cord and plug it in again.
5. If a ERROR occurs during the TEST MODE, DISPLAY LEDs represent ERROR MODE.
MODE
OPERATION
CONTENTS
REMARKS
TEST 1
Press TEST button
1. COMP. and FAN operates successively.
If TEST TERMINAL
once.
2. All the DISPLAY LEDs ON.
is in SHORT, present
3. The both baffle of Elec. DAMPER open
condition is maintained
entirely.
until releasing.
TEST 2
press TEST button
1. COMP. and FAN OFF, HEATER ON.
If DEF-SENSOR is
once in the state of
2. All the display LEDs OFF.
over 13˚C or abnormal,
TEST MODE 1.
(Except the graphic of SUPER FREEZE
it returns to the early
and SUPER COOL LEDs).
condition.
3. Elec. DAMPER colse entirely.
TEST 3
press TEST button
Return to the early condition.
Setting Temp. of FRZ
once in the state of
and REF, and Quick
TEST MODE 2.
Freezing is maintaind
before TEST.
(Comp. starts after
before TEST.
(Comp. starts after
7 min. delay.)
- 22 -
* LED CHECK FUNCTION: Press the FREEZER TEMPERATURE CONTROL BUTTON and the QUICK FREEZING
BUTTON at the same time. After 1 second, all the LEDs on the DISPLAY PCB are ON simutaneously. If release the
BUTTON, return to the previous condition.
BUTTON, return to the previous condition.
* FAN RPM VARIETY CHECK: Press the FREEZER TEMPERATURE CONTROL BUTTON and the QUICK FREEZING
BUTTON at the same time. After 1 second, FAN RPM is reversed for 30 second(2800
↔
2400) and retrun to the previous
condition.
2-1. FEATURE CHART
NOTE : This is a basic model. The shape of refrigerator is subject to change.
2. PARTS IDENTIFICATION
- 5 -
Egg Storage Rack
Freezer Door Rack
Refrigerator Door
Rack
Rack
Leveling Screw
Cover Lower
FREEZER
COMPARTMENT
Freezer Dial
Freezer Lamp
Freezer Shelf
Ice Trays
Ice Cube Box
REFRIGERATOR
COMPARTMENT
Lamp
Temperature
Control Dial
Chilled Room
Shelves
Multi Flow Duct
Distributes cold air
through the shelves to
each part of refrigerator
compartment and draws in
cold air for circulating.
Vegetable Drawer
Used to keep fruits
and vegetables, etc.
fresh and crisp.
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