LG GR-B-L207EC-ER Service Manual ▷ View online
TROUBLE DIAGNOSIS
- 64 -
CLAIMS.
CAUSES AND CHECK POINTS.
HOW TO CHECK
3. Refrigeration
is weak.
4) No cooling air circulation.
5) Compressor capacity.
6) Refrigerant
too much or too little.
7) Continuous operation
- No contact of temperature controller. - Foreign materials.
8) Damper opens continuously.
Foreign materials
jammed.
jammed.
Failed sensor. - Position of sensor.
Characteristics
of damper.
Characteristics
of damper.
9) Food storing place. - Near the outlet of cooling air.
Faulty fan motor.
Small cooling air
discharge.
discharge.
Fan is
constrained.
constrained.
Insufficient
motor RPM
motor RPM
Faulty fan.
Shorud. Bent.
Ice and foreign materials on rotating parts.
Fan shroud contact. - Clearance.
Damping evaporator contact.
Accumulated residual frost.
Damping evaporator contact.
Accumulated residual frost.
Fan misuse.
Bad shape.
Loose connection. - Not tightly connected.
Insert depth.
Bad shape.
Loose connection. - Not tightly connected.
Insert depth.
Rating misuse.
Small capacity.
Low valtage.
Small capacity.
Low valtage.
Malfunction of charging cylinder.
Wrong setting of refrigerant.
Insufficient compressor. - Faulty compressor.
Wrong setting of refrigerant.
Insufficient compressor. - Faulty compressor.
Fan overload. - Fan misuse.
Bad low termperature RPM characteristics.
Rated power misuse.
Low voltage.
Bad low termperature RPM characteristics.
Rated power misuse.
Low voltage.
P/U liquid dump.
EPS water sediment.
Screw.
EPS water sediment.
Screw.
Bad characteristics of its own temperatue.
Parts misuse.
Charge of temperature - Impact.
characteristics.
Parts misuse.
Charge of temperature - Impact.
characteristics.
■
Check visually after
disassembly.
disassembly.
■
Check visually after
disassembly.
disassembly.
TROUBLE DIAGNOSIS
- 65 -
CLAIMS.
CAUSES AND CHECK POINTS.
HOW TO CHECK
4. Warm
refrigerator
compartment
temperature.
compartment
temperature.
5. No automatic
operation.
(faulty
(faulty
contacts.)
6. Dew and
ice formation.
1) Colgged cooling path.
2) Food storate.
1) Faulty temperature sensor in freezer or refrigerator compartment.
2) Refrigeration load is too much.
3) Poor insulation.
4) Bad radiation.
4) Bad radiation.
5) Refrigerant leak.
6) Inadequate of refrigerant.
7) Weak compressor discharging power.
6) Inadequate of refrigerant.
7) Weak compressor discharging power.
8) Fan does not work.
9) Button is positioned at "strong."
9) Button is positioned at "strong."
1) Ice in freeezer compartment.
2) Condensation in the refrigerator compartment.
3) Condensation on liner foam.
P/U liquid leak.
Foreign materials. –– P/U dump liquid.
Foreign materials. –– P/U dump liquid.
Faulty contact.
Faulty temperature characteristics.
Faulty temperature characteristics.
External air inflow. –– Rubber motor assembly direction(reverse).
Door opens
but not closes.
Door opens
but not closes.
Gap around gasket. –– Contraction, distortion, loose, door twisted, corner not
fully inserted.
Food vapor. –– Storing hot food. –– Unsealed food.
Door opens
but not closes.
but not closes.
Gasket gap.
Cool air leak
and transmitted.
and transmitted.
High ambient temperature.
Space is secluded.
Space is secluded.
Different rating.
Small capacity.
Small capacity.
Store hot food.
Store too much at once.
Door open.
Packages block air flow.
Store too much at once.
Door open.
Packages block air flow.
Food.
Frequent opening and closing.
Cool air leak.
Poor door close. – Partly opens.
Cool air leak.
Poor door close. – Partly opens.
Too much food.
Hot food.
Hot food.
Weak door closing power.
Stopper malfunction.
Door sag.
Food hinders door closing.
Stopper malfunction.
Door sag.
Food hinders door closing.
Insufficient closing.
Door sag.
Food hinders door closing.
Door sag.
Food hinders door closing.
Toop table part.
Out plate R/L part.
Out plate R/L part.
Not fully filled.
Flange gap. –– Not sealed.
Gasket gap.
Gasket gap.
■
Inspect parts measurements
and check visually.
and check visually.
TROUBLE DIAGNOSIS
- 66 -
CLAIMS.
CAUSES AND CHECK POINTS.
HOW TO CHECK
6. Dew and
ice formation.
7. Sounds
4) Dew on door.
Dew on the duct door. - Duct door heater is cut.
Dew on the dispense
recess.
Dew on the dispense
recess.
Dew on the door surface.
Not fully filled.
Surface.
Cormer.
Cormer.
P/U liquid contraction.
Dew on the
gasket surface.
gasket surface.
5) Water on the floor.
Dew in the refrigerator compartment.
Defrosted water overflows. Clogged discharging hose.
Discharging hose Evaporation tray located at wrong place.
location.
Tray drip.
Defrosted water overflows. Clogged discharging hose.
Discharging hose Evaporation tray located at wrong place.
location.
Tray drip.
Damaged.
Breaks, holes.
Small Capacity.
Breaks, holes.
Small Capacity.
Position of drain.
1) Compressor compartment operating sounds.
Compressor sound
Sound from machine itself.
inserted.
Sound from vibration.
Restrainer.
Rubber
Rubber
Too hard.
seat.
Distorted.
Aged.
Burnt.
Aged.
Burnt.
Stopper.
Bad Stopper
Not fit
assembly.
(inner
diameter
of stopper).
of stopper).
Tilted.
Not
Not
Compressor base not connected.
Bad welding compressor stand(fallen).
Foreign materials in the compressor
compartment.
Bad welding compressor stand(fallen).
Foreign materials in the compressor
compartment.
O.L.P. sound.
Chattering sound.
Insulation paper vibration.
Insulation paper vibration.
Capacitor noise.
Pipe contacts each other. – Narrow interval.
Pipe sound.
No vibration damper.
Damping rubber-Q.
Damping rubber-S.
Damping rubber-S.
Capillary tube unattached.
Recess Heater is cut.
Duct door is open. / Foreign material clogging.
Duct door is open. / Foreign material clogging.
Bad wing adhesion.
Wing sag(lower part).
Door liner shape mismatch.
Door liner shape mismatch.
Corner.
Too much notch.
Broken.
Broken.
Home Bar heater is cut.
Liquid shortage.
Liquid leak.
Liquid leak.
TROUBLE DIAGNOSIS
- 67 -
CLAIMS.
CAUSES AND CHECK POINTS.
HOW TO CHECK
7. Sounds
1) Compressor compartment operating sounds.
Transformer sound.
Drip tray vibration sound.
Back cover machine sound.
Condenser drain sound.
2) Freezer compartment sounds.
Fan motor sound.
Sounds from fan
contact.
contact.
Unbalance fan sounds.
Motor shaft
contact sounds.
contact sounds.
Resonance.
Evaporator noise.
Evaporator noise.
3) Bowls and bottles make contact on top shelf.
4) Refrigerator roof contact.
5) Refrigerator side contact.
6) Insufficient Lubricants on door hinge.
Its own fault. –– Core gap.
Bad connection. –– Correct screw connection.
Bad connection. –– Correct screw connection.
Bad assembly.
Distortion.
Foreign materials inside.
Distortion.
Foreign materials inside.
Bad connection.
Partly damaged.
Partly damaged.
Not connected.
Bad pipe caulking.
Bad pipe caulking.
Normal operating sound.
Vibration sound.
Vibration sound.
Aged rubber seat.
Bad torque for assembling motor
bracket.
Bad torque for assembling motor
bracket.
Fan guide contact.
Shroud burr contact.
Damping evaporator contact.
Residual frost contact.
Shroud burr contact.
Damping evaporator contact.
Residual frost contact.
Unbalance.
Ice on the fan. –– Air intake (opposite to motor
rubber assembly.)
Supporter disorted.
Tilted during motor assembly.
Tilted during motor assembly.
Evaporator pipe contact. –– No damping evaporator.
Sound from refrigerant. –– Stainless steel pipe shape in
Sound from refrigerant. –– Stainless steel pipe shape in
accumulator.
Sound from fin evaporator and pipe during expansion
and contraction.
and contraction.
Poor treatment Cord heater.
Narrow evaporator interval.
Narrow evaporator interval.
Surface machining conditions.
Fan distortion.
Misshappen.
Burr.
Fan distortion.
Misshappen.
Burr.
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