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- 59 -

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.

Failed sensor.  -  Position of sensor.
Characteristics 
of damper.

9) Food storing place. - Near the outlet of cooling air.

Faulty fan motor.

Small cooling air
discharge.

Fan is 
constrained.

Insufficient
motor RPM

Faulty fan.

Shorud.        Bent.

Ice and foreign materials on rotating parts.

Fan shroud contact. - Clearance.
Damping evaporator contact.
Accumulated residual frost.

Fan misuse.
Bad shape.
Loose connection. - Not tightly connected.
Insert depth.

Rating misuse.
Small capacity.
Low valtage.

Malfunction of charging cylinder.
Wrong setting of refrigerant.
Insufficient compressor. - Faulty compressor.

Fan overload. - Fan misuse.
Bad low termperature RPM characteristics.
Rated power misuse.
Low voltage.

P/U liquid dump.
EPS water sediment.
Screw.

Bad characteristics of its own temperatue.
Parts misuse.
Charge of temperature - Impact.
characteristics.

■

Check visually after
disassembly.

■

Check visually after
disassembly.

- 60 -

4. Warm

refrigerator
compartment
temperature.

5. No automatic

operation.
(faulty 

contacts.)

6. Dew and 

ice formation.

1) Colgged cooling path.

2) Food storate.

1) Faulty temperature sensor in freezer compartment.

2) Refrigeration load is too much.

3) Poor insulation.
4) Bad radiation.

5) Refrigerant leak.
6) Inadequate of refrigerant.
7) Weak compressor discharging power.

8) Fan does not work.
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.

Faulty contact.
Faulty temperature characteristics.

External air inflow. –– Rubber motor assembly direction(reverse).
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.

Gasket gap.

Cool air leak
and transmitted.

High ambient temperature.
Space is secluded.

Different rating.
Small capacity.

Store hot food.
Store too much at once.
Door open.
Packages block air flow.

Food.

Frequent opening and closing.
Cool air leak.
Poor door close. – Partly opens.

Too much food.
Hot food.

Weak door closing power.
Stopper malfunction.
Door sag.
Food hinders door closing.

Insufficient closing.
Door sag.
Food hinders door closing.

Toop table part.
Out plate R/L part.

Not fully filled.

Flange gap. –– Not sealed.
Gasket gap.

■

Inspect parts measurements
and check visually.

- 61 -

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 door surface.

Not fully filled.

Surface.
Cormer.

P/U liquid contraction.

Dew on the
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.

Damaged.
Breaks, holes.
Small Capacity.

Position of drain.

1) Compressor compartment operating sounds.

Compressor sound

Sound from machine itself.
Sound from vibration.

Restrainer.
Rubber

Too hard.

seat.

Distorted.
Aged.
Burnt.

Stopper.

Bad Stopper

Not fit

assembly.

(inner 

diameter
of stopper).

Tilted.
Not inserted.

Compressor base not connected.
Bad welding compressor stand(fallen).
Foreign materials in the compressor 
compartment.

O.L.P. sound. 

Chattering sound.

Capacitor noise.

Insulation paper vibration.

Pipe sound.

Pipe contacts each other. – Narrow interval.
No vibration damper.

Damping rubber-Q.
Damping rubber-S.

Capillary tube unattached.

Recess Heater is cut.
Duct door is open. / Foreign material clogging.

Bad wing adhesion.

Wing sag(lower part).
Door liner shape mismatch.

Corner.

Too much notch.
Broken.

Home Bar heater is cut.

Liquid shortage.
Liquid leak.

- 62 -

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.

Unbalance fan sounds.

Motor shaft
contact sounds.

Resonance.
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 assembly.
Distortion.
Foreign materials inside.

Bad connection.
Partly damaged.

Not connected.
Bad pipe caulking.

Normal operating sound.
Vibration sound.

Aged rubber seat.
Bad torque for assembling motor
bracket.

Fan guide 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.

Evaporator pipe contact. –– No damping evaporator.
Sound from refrigerant. –– Stainless steel pipe shape in

accumulator.

Sound from fin evaporator and pipe during expansion
and contraction.

Poor treatment Cord heater.
Narrow evaporator interval.

Surface machining conditions.
Fan distortion.
Misshappen.
Burr.