LG GR-267 Service Manual ▷ View online
TROUBLE
DIAGNOSIS
-7
8-
8-
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 CON5
Replace relay(RY1
Refer to load
driving relay.
(3&9) after pressing main PCB
and RY14) 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.
• Replace relay(RY5
& RY6) or PCB.
Faulty defrost.
Refer to faulty defrost items in trouble diagnosis
Refer to trouble
functions.
diagnosis
function.
TROUBLE
DIAGNOSIS
-7
9-
9-
Problems
Symptom
Causes
Checks
Measures
Remarks
Bad cooling
Wrong
Defective AC Damper. Check AC damper
Check if AC damper motor and
Reconnect lead
Refrigerator
motor and reed switch
reed switch lead wire are
wire.
temperature.
and lead wire are cut.
cut with a tester.
Check AC damper
Refer to AC damper in parts
Replace AC damper
part.
repair guide.
or refrigerator control
box Assy.
Check AC damper
Refer to AC damper in parts
Replace relay or
Refer to single
Motor driving relay in
repair guide.
PCB.
motor damper
PCB.
driving circuits
in circuit
explanation.
Foreign materials in AC
Check AC damper baffle
Remove foreign
damper baffles
visually.
materials.
Ice formation on AC
Check if AC damper Heater
Replace AC damper
damper baffles
wire is cut with a tester.
or refrigerator 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.
TROUBLE
DIAGNOSIS
-8
0-
0-
Problems
Symptom
Causes
Checks
Measures
Remarks
Bad defrost.
Defrost is not
Defrost lead wire is cut.
Check if defrost lead wire is cut with a
Reconnect Lead
working.
tester.
Wire.
Defective defrost driving relay.
Check the voltage of CON5 (1 and 7)
Replace relay (RY 7
Refer to load
with a tester after pressing main
and RY 14) or PCB.
driving conditions
PCB test switch twice.
check in circuit
If the voltage is normal then it is OK.
explanation.
Defective defrost sensor parts.
Check the resistance of defrost sensor
Replace defrost
Refer to sensor
with a tester.
sensor.
resistance
characteristic
table of circuit
explanation.
Defective
Buzzer
Defective connecting lead wire from
Check lead wire related to door
Repair lead wire.
buzzer
continuously
main PCB to door switch.
switch with a tester.
rings or door
Defective door switch parts.
Refer to door switch in parts repair
Replace door switch.
opening alarm
guide.
does not work.
Defective
Buzzer does
Key input wire is cut or bad connector
Check input wire with a tester.
Reconnect lead
Refer to display
display button
not ring and
terminal contact in main PCB and
wire and replace or
circuit in circuit
key does not
display PCB connecting lead wire.
directly connect bad
explanation.
sense even
contact terminal to
button is
lead wire.
pressed.
Key is continuously depressed due to
Disassemble frame display and confirm
Adjust or replace
structural interference.
visually.
interfering
structures.
TROUBLE
DIAGNOSIS
-8
1-
1-
Problems
Symptom
Causes
Checks
Measures
Remarks
Defective
Buzzer rings
Trouble mode indication.
Check trouble diagnosis function.
Repair troubles
Refer to mode
display button.
but key does
indication in
not sense even
function
button is
explanations.
pressed.
Bad water/ice
Buzzer
Defective connecting lead wire from
Check lead wire associated with door
Repair lead wire.
Check model
dispenser.
continuously
main PCB to door switch.
switch.
with dispenser.
rings or door
Defective freezer compartment door
Refer to door switch in parts repair
Replace Freezer
opening alarm
switch parts.
guide.
compartment door
does not work.
switch.
Ice and water
Defective connecting lead wire from
Check Lead Wire associated with lever
Repair lead wire.
are not
Main PCB to lever switch.
switch with a tester.
dispensed.
Defective lever switch parts
Refer to door switch in parts repair guide. Replace lever switch.
Defective photo coupler IC parts.
Check voltage change at photo coupler
Replace photo
output terminals with lever switch
coupler IC or PCB.
pressed. It is OK if voltage change is
between 0V - 5V.
Defective relay associated with ice
Check relay (RY9, RY11, RY12)
Replace defective
dispense (geared motor, cube and
with a tester.
relay.
dispenser solenoid).
Defective parts associated with ice
Check resistance of parts with a tester.
Replace defective
dispense (geared motor, cube and
parts.
dispenser solenoid).
Defective relay associated with water
Check relay (RY10) with a tester
Replace defective
dispense.
relay.
Defective parts associated with water
Check resistance of parts with a tester.
Replace defective
dispenser.
parts.
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