LG GR-267 Service Manual ▷ View online
TROUBLE DIAGNOSIS
- 64 -
CLAIMS.
CAUSES AND CHECK POINTS.
HOW TO CHECK
10. Structure,
appearance
and others.
and others.
1) Door foam.
Sag.
Noise during
operation.
operation.
Malfunction.
2) Odor.
Temperature of
refrigerator
compartment.
refrigerator
compartment.
Deodorizer.
Food Storage.
Others.
Weak torque of
hinge connection.
hinge connection.
Weak gasket
adhesion.
Fixed tape.
adhesion.
Fixed tape.
Hinge interference.
Not closed Interference between door liner and inner liner.
Refrigerator
compartment is
opened when freezer
compartment is
closed (faulty stopper).
Refrigerator
compartment is
opened when freezer
compartment is
closed (faulty stopper).
High.
Faulty damper control.
Button is set at "weak".
Door is open (interference by
food).
Button is set at "weak".
Door is open (interference by
food).
No deodorizer.
Poor capacity.
Poor capacity.
Seal condition.
Store special odorous food.
Long term storage.
Store special odorous food.
Long term storage.
Odors from chemical procucts.
Bigger door foam.
Hinge-Pin tilted-Poor flatness.
No washer.
No grease and not enough
quantity.
Hinge-Pin tilted-Poor flatness.
No washer.
No grease and not enough
quantity.
Stopper worn out.
Bad freezer compartment door
assembly.
No stopper.
Bad freezer compartment door
assembly.
No stopper.
Bolt is loosened during
transportaion.
Not tightly fastened.
Screw worn out .
Adhesion surface.
transportaion.
Not tightly fastened.
Screw worn out .
Adhesion surface.
Not well fixed.
TROUBLE DIAGNOSIS
- 56 -
CLAIMS.
CAUSES AND CHECK POINTS.
HOW TO CHECK
2. No cooling.
2) Refrigeration system is clogged.
■
Check the clogged
evaporator by heating (as
soon as the cracking sound
begins, the evaporator start
freezing)
evaporator by heating (as
soon as the cracking sound
begins, the evaporator start
freezing)
■
The evaporator does not cool
from the beginnig (no evidece
of misture attached).
The evaporator is the same
as before even heat is
applied.
from the beginnig (no evidece
of misture attached).
The evaporator is the same
as before even heat is
applied.
Moisture
clogged.
clogged.
No electric
power on
therm-
ostat.
power on
therm-
ostat.
Weld joint
clogged.
clogged.
Drier cloggeing.
Foreign material clogging.
Residual moisture
in the evaporator.
Residual moisture.
Insufficient drier
capacity.
capacity.
Residual moisture
in pipes.
in pipes.
Moisture penetration - Leave it in the air. - Moisture penetration.
into the refrigeration oil.
into the refrigeration oil.
Caps are missed.
Air blowing.
During transportation.
During work.
During work.
Not performed.
Performed.
Performed.
Too short time.
Low air pressure.
Less dry air.
Low air pressure.
Less dry air.
Air Blowing.
Leave it in the air.
Caps are missed.
Short pipe insert.
Pipe gaps.
Too much solder.
Too large.
Damaged pipes.
Damaged pipes.
Not dried in the compressor.
Elapsed more than 6 months after drying
Caps are missed.
No pressure when it is open.
Elapsed more than 6 months after drying
Caps are missed.
No pressure when it is open.
During rest time.
After work.
Compressor cap is disconnected.
Foreign materials are in the pipe.
Foreign materials are in the pipe.
Not performed.
Too short.
Impossible moisture
confirmation.
Low air pressure.
Too short.
Impossible moisture
confirmation.
Low air pressure.
Dry drier - Drier temperature.
Leave it in the air.
The capillary tube inserted depth. - Too much.
Capillary tube melts. - Over heat.
Clogged with foreign materials.
Reduced cross section by cutting. - Squeezed.
Desiccant powder.
Weld oxides.
Drier angle.
Weld oxides.
Drier angle.
Check on package
condition.
Good storage after
finishing.
condition.
Good storage after
finishing.
TROUBLE DIAGNOSIS
- 57 -
CLAIMS.
CAUSES AND CHECK POINTS.
HOW TO CHECK
3. Refrigeration
is weak.
Defrost
thermo-
stat
thermo-
stat
Plate
heater
heater
Cord
heater
heater
Melting
fuse
fuse
1) Refrigerant Partly leaked.
2) Poor defrosting capacity.
Drain path (pipe) clogged.
Defrost heater does not
generate heat.
generate heat.
Weld joint leak.
Parts leak.
Parts leak.
Inject P/U into drain hose.
Foreign materials
penetration.
penetration.
Cap drain is not disconnected.
Inject through the
hole.
Seal with drain.
hole.
Seal with drain.
P/U lump input.
Screw input.
Other foreign materials
input.
Screw input.
Other foreign materials
input.
Parts
disconnected.
disconnected.
Thermostat is cut.
- Bad caulking
connection.
- Base material
(Ammonia).
Terminal is corroded.
- Water penetration
Bad terminal contact.
Wire is cut.
- Heating wire.
- Contact point
- Contact point
between heating
and electric wire.
and electric wire.
Dent by fin evaporator.
Poor terminal contacts.
Poor terminal contacts.
Wire is cut.
- Lead wire.
- Heating wire.
- Contact point
- Heating wire.
- Contact point
between heating and
electric wire.
electric wire.
Heating wire is corroded
- Water penetration.
Bad terminal connection.
The fuse blows out.
Paraffin melted
Paraffin melted
- Welding flame.
Bad terminal contact.
■
Check visually.
■
Check terminal
Conduction: OK.
No conduction: NG.
If wire is not cut, refer to
resistance.
P=Power
V=Voltage
R=Resistance
Conduction: OK.
No conduction: NG.
If wire is not cut, refer to
resistance.
P=Power
V=Voltage
R=Resistance
V
2
P= —
R
V
2
R= —
P
- 58 -
TROUBLE DIAGNOSIS
CLAIMS.
CAUSES AND CHECK POINTS.
HOW TO CHECK
3. Refrigeration
is weak.
3) Cooling air leak.
4) No cooling air circulation.
Residual
frost.
frost.
No automatic defrosting.
Defrost does not return.
Bad gasket adhestion
Door sag.
Faulty fan motor.
Weak heat from heater.
Bad heater assembly.
Too short defrosting time.
Defrost Sensor.
- Faulty characteristics.
Seat-D(missing, location. thickness).
Structural fault.
Gasket gap.
Air inflow through the fan motor.
Bad insulation of case door.
Sheath Heater - rated.
Heater plate - rated.
Heater cord-L - rated.
Heater plate - rated.
Heater cord-L - rated.
Heater plate
Heater cord-L
Gap.
Bad attachment.
Contraction.
Bad attachment.
Contraction.
Bad adhesion.
Weak binding force at hinge.
Weak binding force at hinge.
Fan motor.
Door switch.
Self locked.
Wire is cut.
Bad terminal contact.
Wire is cut.
Bad terminal contact.
Contact distance.
Button pressure.
Melted contact.
Contact.
Button pressure.
Melted contact.
Contact.
Poor door
attachment.
Door liner
(dimension).
Contraction inner
liner.
Misalignment.
Bad terminal
connection.
P/U liquid leak.
attachment.
Door liner
(dimension).
Contraction inner
liner.
Misalignment.
Bad terminal
connection.
P/U liquid leak.
Faults.
Refrigerator and freezer switch reversed.
Button is not pressed.
Button is not pressed.
No contact to drain.
Loosened stopper cord.
Loosened stopper cord.
Not contact to the
evaporator pipe.
Location of assembly
(top and middle).
evaporator pipe.
Location of assembly
(top and middle).
■
Check the fan motor
conduction: OK.
No conduction: NG.
conduction: OK.
No conduction: NG.
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