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Model
GR-V389SQF
Pages
33
Size
4.13 MB
Type
PDF
Document
Service Manual
Brand
Device
Refrigerator
File
gr-v389sqf.zip
Date

LG GR-V389SQF Service Manual ▷ View online

2 PTC AND OLP
- 12 -
YES
NO
6
5
4
3
Normal operation of
Compressor is
impossible or poor.
Separate the PTC-Starter
from Compressor and
measure the resistance
between No. 5 and 6 (only
RSIR type) or No. 4 and 5 of
PTC-Starter with a Tester or
Whistone Bridge.
(Figure 21)
Separate the OLP from the
Compressor and check the
resistance value between
two terminals of OLP with
a Tester. (Figure 22)
Observation value is
220V/50Hz : 22
§
±30%
115V/60Hz : 6.8
§
±30%
240V/50Hz : 33
§
±30%
127, 220V/60Hz : 22
§
±30%
The resistance value is 0
or serveral hundreds 
§
.
The value is 
¡˜
.
Check another
electric components.
Replace OLP.
Check another
electric
components.
Replace
PTC-Starter.
Figure  21
Figure  22
3 ANOTHER ELECTRIC COMPONENTS
- 13 -
▼ Cooling is impossible
Compressor
doesn't run.
Running state of
Compressor is poor.
Check a starting
voltage.
Check if current flows to
the following
components.
a. Thermistor
b. Starting devices
c. OLP
d. Compressor coil
e. Circuit Parts
Low voltage.
Poor contacting.
Shorted or broken.
Poor contacting
or shorted.
Coil shorted.
Poor contacting
or shorted.
Poor contacting
and broken.
Shorted.
Lack of capacity.
Coil of motor
Compressor.
Replace
the compressor.
Replace
each component.
Raise the voltage.
Replace
each component.
Cause.
Check if current flows
to starting devices.
Check current flowing
in sub-coil of
Compressor.
Check capacity of OLP.
The items described
above are normal.
▼ Cooling ability is poor
Fan motor
doesn't run.
Much frost are sticked
to the EVAPORATOR.
Poor contacting.
Coil is shorted.
Shorted.
Replace
the Heater, Sheath
Replace
each component.
Replace
each component.
Check current flowing
in SWITCH, DOOR.
Check current flowing in the
MOTOR[MECH], FAN.
Check current flowing
of the following
components.
¥ THERMISTOR
¥ FUSE, MELTING
Check current flowing
of the following
components. 
¥ HEATER, SHEATH
4 SERVICE DIAGNOSIS CHART
COMPLAINT
POINTS TO BE CHECKED
REMEDY
Cooling is
¥ Is the power cord unplugged from the outlet?
¥ Plug to the outlet.
impossible.
¥ Check if the power switch is set to OFF.
¥ Set the switch to ON.
¥ Check if the fuse of power switch is shorted.
¥ Replace a regular fuse.
¥ Measure the voltage of power outlet.
¥ If voltage is low, wire newly.
Cooling ability
¥ Check if the set is placed close to wall.
¥ Place the set with the space of about 10cm.
is poor.
¥ Check if the set is placed close to stove, gas
¥ Place the set apart from these heat
¥ 
cooker and direct rays.
¥ 
appliances.
¥ Is the ambient temperature high or 
¥ Make the ambient temperature below.
¥ 
the room door closed?
¥ Check if put in is hot.
¥ Put in foods after cooled down.
¥ Did you open the door of the set too often 
¥ Don't open the door too often and close
¥ 
or check if the door is closed up?
¥ 
it firmly.
¥ Check if the Damper Control is set to "cold-position".
¥ Set the control to mid-position.
Foods in the
¥ Is foods placed in cooling air outlet?
¥ Place foods in high temperature section.
Refrigerator
¥ 
(Front Part)
are frozen.
¥ Check if the control is set to "cold-position".
¥ Set the control to "mid-position".
¥ Is the ambient temperature below 5¡C?
¥ Set the control to "warm-position".
Dew or ice
¥ Is liquid food stored?
¥ Seal up liquid foods with wrap.
forms in the
¥ Check if put in is hot.
¥ Put in foods after cooled down.
chamber of
¥ Did you open the door of the set too  
¥ Don't open the door too often and close
the set.
¥ 
often or check  if the door is closed up.
¥ 
it firmly.
Dew forms
¥ Check if ambient temperature and humidity
¥ Wipe dew with a dry cloth. This occurrence
in the Exterior Case.
of surroumcling air are high.
¥ 
is solved naturally in low temperature and humidity.
¥ Is there gap in the door packed?
¥ Fill up the gap.
Abnormal
¥ Are the set positioned in a firm and even place?
¥ Adjust the Adjust Screw, and position
noise generates.
¥ 
in the firm place.
¥ Are any unnecessary objects set 
¥ Remove the objects.
¥ 
in the back side of the set?
¥ Check if the Tray Drip is not firmly fixed.
¥ Fix it firmly on the original position.
¥ Check if the cover of mechanical room 
¥ Place the cover at the original position.
¥ 
in below and front side is taken out.
To close the door
¥ Check if the door packing is dirty 
¥ Clean the door packing.
is not handy.
¥ 
with filth such as juice.
¥ Is the set positioned in a firm and even place?
¥ Position in the firm place and adjust the
¥ 
Adjust Screw.
¥ Is too much food putted in the set?
¥ Keep foods not to reach the door.
Ice and foods
¥ Check if the inside of the set is dirty.
¥ Clean the inside of the set.
smell unpleasant.
¥ Did you keep smelly foods without wrapping?
¥ Wrap smelly foods.
¥ It smells of plastic.
¥ The new products smells of plastic, but it is
¥ 
eliminated after 1-2 weeks.
In addition to the items described left, refer to the followings to solve the complaint.
Check if dew forms in
the Freezer.
Replace the
Components of
defrosting circuit.
Check Refrigerating
Cycle.
Check the 
Damper Control
Defrosting
is poor.
The cycle
is faulty.
Repair the cycle.
Replace the 
Damper Control
The operation of
the Damper
Control is poor.
- 14 -
5 REFRIGERATING CYCLE
▼ Troubleshooting Chart
▼ Leakage Detection
● 
Observe discharging point of refrigerant which may be in the oil discharging part in the compressor and hole of evaporator.
- 15 -
YES
YES
Whether Compressor
runs or not.
Whether frost
forms or not in
Evaporator.
Observe the discharged
amount of Refrigerant.
Inject Refrigerant to Compressor
and check cooling operation.
Clogged by dust.
Gas leakage.
Faulty
Compressor.
Moisture Clog.
Whether oil
leaks or not.
Frost formed normally
Normal amount
No or much amount
(Check the leakage point)
Frost formed normally
No frost
or forms
in inlet only
Check Compressor
PARTIAL
Freezer room and
Low flowing sound of
A little high
¥ A little Refrigerant
LEAKAGE
Refrigerator
Refrigerant is heard and
more than
¥ 
discharges.
don't cool
frost forms in inlet only
ambient
¥ Normal cooling is possible
normally.
temperature.
¥ 
when injecting of Refrigerant
¥ 
the regular amount.
WHOLE
Freezer room and
Flowing sound of Refrigerant
Equal to ambient
¥ No discharging of Refrigerant.
LEAKAGE
Refrigerator
is not heard and frost isn't
temperature.
¥ Normal cooling is possible
don't cool
formed.
¥ 
when injecting of Refrigerant
normally.
¥ 
the regular amount.
PARTIAL
Freeze room and
Flowing sound of Refrigerant
A little high
¥ Normal discharging of
CLOG
Refrigerator
is heard and frost forms
more than
¥ 
refrigerant.
don't cool
in inlet only.
ambient
¥ The capillary tube is faulty.
normally.
temperature.
WHOLE
Freezer room and
Flowing sound of Refrigerant
Equal to ambient
¥ Normal discharging of
CLOG
Refrigerator
is not heard and frost isn't
temperature.
¥ 
Refrigerant.
don't cool.
formed.
MOISTURE
Cooling operation
Flowing sound of Refrigerant
Low than
¥ Cooling operation restarts
CLOG
stops periodically.
is not heard and frost melts.
ambient
¥ 
when heating the inlet of
temperature
¥ 
capillary tube.
COMP-
Freezer and
Low flowing sound of
A little high
¥ The pressure of high
RESSION
Refrigerator
Refrigerant is heard and
than ambient
¥ 
pressure part in
don't cool.
frost forms in inlet only.
temperature.
¥ 
compressor is low.
NO COMP-
No compressing
Flowing sound of Refrigerant
Equal to ambient
¥ No pressure of high pressure
RESSION
operation.
is not heard and no frost.
temperature.
¥ 
part in the compressor.
CAUSE
TEMPERATURE
OF THE
COMPRESSOR
REMARKS
STATE OF
THE SET
STATE OF THE
EVAPORATOR
LEAKAGE
CLOGGED
BY
DUST
DEFECTIVE
COMPRESSION
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