LG GR-P207DTU Service Manual ▷ View online
2-8. Odor
TROUBLE DIAGNOSIS
- 93 -
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 : option
deodorizer.
then in the shiny and windy place.
-
Remove and replace the
deodorants.
2-9. Micom
TROUBLE DIAGNOSIS
- 94 -
Problems
Symptom
Causes
Checks
Measures
Remarks
Bad PCB
All display
Bad connection
Bad connector
Visual check on connector
Reconnect
electric power.
LCD 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 LCD
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 LCD.
Defective LCD.
Check if all LCD are on when
Replace display
Refer to display
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.)
TROUBLE DIAGNOSIS
- 95 -
Problems
Symptom
Causes
Checks
Measures
Remarks
Bad cooling.
Freezer
Compressor does
Compressor Lead Wire
Check compressor Lead Wire
Reconnect Lead
temperature is
not start.
is cut.
with a tester.
Wire.
high.
Defective compressor
Measure voltage at PCB CON2
Replace relay(RY1
Refer to load
driving relay.
(3&9) after pressing main PCB
and RY2) or PCB.
driving circuit in
test switch once. It is OK if
circuit
voltage is normal.
explanation.
Defective freezer
Defective Freezer
Check resistance of freezer
Replace freezer
Refer to
sensor.
sensor parts.
sensor with a tester.
sensor.
resistance
characteristics
table of sensor in
circuit
Freezer sensor is
Confirm the color of sensor in
Repair main PCB
explanation.
substituted for other
circuits (main PCB sensor
sensor housing
sensor.
housing).
Defective freezer fan
Fan motor lead wire
Check fan motor lead wire
Reconnect lead
motor.
is cut.
with a tester.
wire.
• Defective door switch
Measure the voltage between
• Replace door
Refer to load
(freezer, refrigerator,
PCB power blue line and fan
switch
(freezer,
driving circuits in
home bar).
motor after pressing test switch
refrigerator
and circuit
• Defective fan motor.
of Main PCB. If the voltage is
home bar).
explanation.
• Defective fan motor
normal, it is OK.
• Replace fan motor.
driving relay.
Faulty defrost.
Refer to faulty defrost items in trouble diagnosis
Refer to trouble
functions.
diagnosis
function.
TROUBLE DIAGNOSIS
- 96 -
Problems
Symptom
Causes
Checks
Measures
Remarks
Bad cooling
Wrong
Defective Step Motor
Check Step Motor
Check if Step Motor damper
Reconnect lead
Refrigerator
Damper.
damper motor and
motor and reed switch lead
wire.
temperature.
reed switch and lead
wire are cut with a tester.
wire are cut. Check
Refer to Step Motor damper
Replace Step Motor
Step Motor damper
in parts repair guide.
damperor refrigerator
part.
control box Assy.
Check Step Motor
Refer to Step Motor damper
Replace relay or
Refer to single
damper Motor driving
in parts repair guide.
PCB.
motor damper
relay in PCB.
driving circuits
in circuit
explanation.
Foreign materials in Step
Check Step Motor damper
Remove foreign
Motor damper baffles.
baffle visually.
materials.
Ice formation on
Check if Step Motor damper
Replace Step Motor
Step Motor damper
Heater wire is cut with a
damper or refrigerator
baffles.
tester.
control Box Assy.
Defective refrigerator
Defective refrigerator
Check the resistance of
Replace refrigerator
Refer to sensor
sensor
sensor parts.
refrigerator sensor with a tester.
sensor.
resistance
characteristic
table in circuit
explanation.
Refrigerator sensor is
Check the sensor color in the
Repair main PCB
substituted for other
circuit. (main PCB sensor
sensor housing.
sensor.
housing.)
Defective refrigerator
Check if refrigerator sensor
Fix again the
sensor assembly
is not fixed at cover sensor but
refrigerator sensor.
condition.
inner case visually.
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