LG GR-267 Service Manual ▷ View online
TROUBLE
DIAGNOSIS
-7
4-
4-
Problems
Causes
Checks
Measures
Remarks
Vibration sound. 1. Vibration of shelves and foods in
1-1. Remove and replace the
1) Reassemble the vibrating parts
("Cluck")
the refrigerator.
shelves in the refrigerator
and insert foam or cushion where
2. Pipes interference and capillary
1-2. Check light food and container
vibration is severe.
tube touching in the compressor.
on the shelves.
2) Leave a clearance where parts
compartment.
2-1. Touch pipes in the compressore
interfere with each other.
3. Compressor stopper vibration.
compartment with hands.
3) Reduce vibration with rubber
4. Moving wheel vibration.
2-2 Check capillary tube touches
and restrainer if it is severe.
5. Other structure and parts
cover back.
(especially, compressor and pipe).
vibration.
3-1 Check compressor stopper
4) Replace compressor stopper if it
vibration.
vibtates severely.
4-1 Check vibration of front and rear
moving wheels.
5-1 Touch other structures and parts.
Irregular sound. 1. It is caused by heat expansion
1-1 Check time and place of sound
1) Explain the principles of refrigeration
("Click").
and contraction of evaporator,
sources.
and that the temperature difference
shelves, and pipes in the
between operation and defrosting
refrigerator.
can make sounds.
2) If evaporator pipe contacts with other
structures, leave a clearance between
them (freezer shroud or inner case).
-7
5-
5-
Problems
Causes
Checks
Measures
Remarks
Sound "Burping" It happens when refrigerant expands - Check the sound of refrigerant at the
- Check the restrainer attached on the
(almost the same at the end of capillary tube.
initial installation.
evaporator and capillary tube weld
as animals crying
- Check the sound when the refrigerator
joints and attach another restrainer.
sound).
starts operation after forced defrosting.
- If it is continuous and servere, insert
- Check the restrainer attachment
capillary tube again (depth:15
±
3mm)
conditions on the evaporator and
- Fasten the capillary tube to suction
capillary tube weld joints.
pipes or detach in the compressor
compartment.
- Explain the principles of freezing
cycles.
Water boiling or
It happens when refrigerant passes
- Check the sound when compressor is
- Explain the principles of freezing cycles
flowing sound.
orifice in accumulator internal pipes by
turned on.
and refrigerant flowing phenomenon by
the pressure difference between
- Check the sound when compressor is
internal pressure difference.
condenser and evaporator.
turned off.
- If sound is servere, wrap the
accumulator with foam and restrainer.
Sound of whistle
When door closes, the internal pressure
- Check the sound by opening and
- Broaden the cap of discharge hose for
when door
of the refrigerator decreases sharply
closing the refrigerator or freezer doors.
defrosting in the compressor
closes.
below atomosphere and sucks air into
compartment.
the refrigerator, making the whistle
- Seal the gap with sealant between out
sound.
and inner cases of hinge in door.
2-8. Odor
TROUBLE
DIAGNOSIS
-7
6-
6-
Problems
Causes
Checks
Measures
Remarks
Food Odor.
Food (garlic, kimchi, etc)
- Check the food is not wrapped.
- Dry deodorizer in the shiny and
- Check the shelves or inner
windy place.
wall are stained with food juice.
- Store the food in the closed
- Check the food in the vinyl wraps.
container instead of vinyl wraps.
- Chedk food cleanliness.
- Clean the refrigerator and set
button at "strong".
Plastic Odor.
Odors of mixed food and plastic
- Check wet food is wrapped with
- Clean the refrigerator.
odors.
plastic bowl and bag.
- Persuade customers not to use
- It happens in the new refrigerator.
plastic bag or wraps with wet food
or odorous foods.
Odor from the
Odor from the old deodorizer.
- Check the deodorizer odors.
- Dry the deodorizer with dryer and
deodorizer.
then in the shiny and windy place.
- Remove and replace the
deodorants.
2-9. Micom
TROUBLE
DIAGNOSIS
-7
7-
7-
Problems
Symptom
Causes
Checks
Measures
Remarks
Bad PCB
All display
Bad connection
Bad connector
Visual check on connector
Reconnect
electric power.
LEDS are off.
between Main PCB
connection from main
connection.
connector.
and display circuit.
PCB to display PCB.
Defective PCB trans.
PCB Trans winding is
Check resistance of PCB Trans
Replace PCB Trans
Applicable to
cut.
input and output terminals with
or PCB.
model without
PCB Trans temperature
a tester. (If resistance is infinity,
dispenser.
fuse is burnt out.
trans winding is cut).
DefectivePCB electric
Defective regulator IC
Check voltage at input/output
Replace regulator.
Refer to electric
circuit parts.
(7812, 7805).
terminals.
circuit in circuit
explanation.
PCB electric terminal
Check fuse in PCB electric
Replace PCB fuse.
fuse is burnt out.
terminal with a tester.
STR Parts are
Check if STR No. 2 and 3 pins
Replace parts.
Applicable to
damaged.
are cut when power is off.
model with
dispenser.
Abnormal
Bad connection
Lead Wire connecting
Check Lead Wire terminals
Reconnect Lead
display LED
between Main PCB
main PCB and display
connecting Main PCB and
Wire and directly
operation
and display circuit.
PCB is cut or connector
display PCB with a tester.
connect defective
terminal connection is
contact terminal to
bad.
Lead Wire.
Defective LED
Defective LED.
Check if all LEDs are on when
Replace display
Refer to display
module.
Main PCB Test switch is
PCB.
circuit in circuit
pressed (or when both freezer
explanation.
key and power freezer key are
pressed at the same time for
more than one second.)
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