DOWNLOAD LG GR-642BEPF Service Manual ↓ Size: 4.68 MB | Pages: 33 in PDF or view online for FREE

Model
GR-642BEPF
Pages
33
Size
4.68 MB
Type
PDF
Document
Service Manual
Brand
Device
Refrigerator
File
gr-642bepf.zip
Date

LG GR-642BEPF Service Manual ▷ View online

- 43 -
151B
154A
151A
155K
149B
140A
149C
241A
241D
241C
235A
205A
205B
131A
131C
243A
210A
210B
233A
230A
203A
330B
405C
404A
329A
405A
149A
125A
201A
503G,H,J.K
503C
503B
231A
332A
503F
212C
212D
212A
244B
244D
244A
244C
241A
212G
200A
212H
244G
503A
- 44 -
611P
611M
611Q
611A
611B
611C
611D
611H
611S
611T
611N
611R
611Y
611Z
611L
611E
611K
611W
611X
7-1 FUNCTION EXPOSITION
7-1-1 TEMPERATURE CONTROL AND ITS DISPLAY OF FREEZER AND REFRIGERATOR
1. If power on, LED displays the MID condition. And whenever pressing the temperature control button, freezer and
refrigerator operates as follow.
"MID 
MID/COLDEST 
COLDEST 
MID/COLDEST 
MID"
2. If power off and on again, operate the MID condition.
7-1-2 SUPER FREEZING
1. Function to raise the freezing speed of freezer room by operating the COMP successively. As pressing the SUPER
FREEZE button, the SUPER FREEZE LED is displayed in regular order. Then after three hours' successive operation of
COMP, the SUPER FREEZING functio will be released.
2. Defrosting during the SUPER FREEZING operates as follow. When the SUPER FREEZING time is below 90 minutes,
defrost and then operate the SUPER FREESING for the remaining time. When the SUPER FREEZING time is over 90
minutes, defrost and then operate the SUPER FREEZING for two hours.
3. If press the SUPER FREEZE button during defrosting, the SUPER FREEZE LED is lit up. But the SUPER FREEZING
operates for 3 hours after 7 minutes from the end of defrosting.
4. If power off during the SUPER FREEZING and power on again, the SUPER FREEZING function is released.
5. Once the COMP stops its operation, it operates again after 7 minutes from its stop.
6. In SUPERR FREEZING, Fan motor operates with 2800 rpm.
7-1-3  SUPER COOLING
1. function to raise the cooling speed of refrigerator room. As pressing the SUPER COOL button, the SUPER COOL LED is
displayed in regular order. Then after the temperature of refrigerator is saisfied with the set temperature but Max 2 hours,
the SUPER COOLING function will be released.
2. In SUPER COOLING, Fan motor operates with 2800 rpm, the Damper is all open. If the temperature of refrigerator is
satisfied with the set temperature, the Damper is all close.
3. Defrosting during the SUPER COOLING operates for the remaining time after defrosting.
4. If press the SUPER COOL button during defrosting, the SUPER COOL LED is lit up . But the SUPER COOLING operates
after 7 minutes from the end of defrosting.
5. If power off during the SUPER FREEZING and power on again, the SUPER COOLING function is released.
7. PCB CIRCUIT EXPLANATION
- 18 -
FRZ. TEMP
REF. TEMP
SUPER FREEZE
SUPER COOL
FOCUSED
COOLING
COLD
COLDEST
COLDEST
MID/
MID/
MODE
COLDEST
COLDEST
MID
COLD
COLD
TEMP(˚C)
-21
-19
-18
-17
-15
ROOM
FREEZER
MID/
MID/
MODE
COLD
COLD
MID
COLDEST
COLDEST
TEMP(˚C)
6
4
3
2
0
ROOM
REFRIGERATOR
7-1-4 THE LED OPERATING OF THE FOCUSED COOLING PART
1. When the FREEZER or REFRISGERATOR DOOR opens, the
FOCUSED COOL LEDs are displayed as follow and LEDs are
off two minutes after they are closed.
,     
LED OFF 
2. The reason of the LEDs' onis that sensor is detecting the
position of the new incoming foods
7-1-5 VARIABLE FAN CONTROLLING
1. To raise the freezing and refrigerating speed, FAN MOTOR is controlled by 2800 rpm and 2400 rpm.
2. The FAN controlling of 2800 rpm is operated only at the case of the initial power on, SUPER FREEZING and SUPER
COOLING, at the other case 2400 rpm is operated.
3. When the door of freezer room or refrigerator room is opened, the FAN MOTOR is stoped immediately, then when the
door is closed, the FAN MOTOR is operated after 20 sec.(FAN MOTOR 20 sec delay)
7-1-6 SPECIAL ICE MAKING SYSTEM
1. Function to raise the the function to make ice. The sensor(SUPER FROST SENSOR) attatched at the left side of ICE
TRAY detects the new incoming loads (water) and operates COMP for 2 hours, FAN MOTOR for 3 hours and then this
function is released.
2. In the initial power on, DEFROSTING and ERROR MODE(SUPER FROST SENSOR abnomal), this function is not
performed.
7-1-7 DOOR-OPENING ALARM
1. When the FREEZER or REFRIGERATOR DOOR opens and won't close after 1 minute from the its opening, BUZZER
sounds to notify it.
2. At first, BUZZER sounds three times at each intervals of 0.5 second. Then makes a 0.5 second ON/OFF alarm three
times at intervals of 30 seconds.
3. If the FREEZER and REFRIGERATOR door closed during ALARM, it is released.
- 19 -
FOCUSED
COOLING
A
B
C
D
FREEZER OR
REFRIGERATOR
DOOR
BUZZER
CLOSE
OPEN
CLOSE
OPEN
CLOSE
three
times
three
times
three
times
three
times
within
1 minute
1 minute
30
seconds
30
seconds
(EX.)
A
A
A
B
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