LG GC-B379S*CA, Service Manual

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TROUBLESHOOTING (Mechanical Part) TROUBLESHOOTING (Mechanical Part) TROUBLESHOOTING (Mechanical Part) TROUBLESHOOTING (Mechanical Part)
5. REFRIGERATING CYCLE
Troubleshooting Chart
CAUSE STATE OF THE SET
STATE OF
THE EVAPORATOR
TEMPERATURE OF
THE COMPRESSOR
REMARKS
LE
AK
A
GE
PARTIAL
LEAKAGE
WHOLE
LEAKAGE
Freezer room and
Refrigerator don't
cool normally.
Freezer room and
Refrigerator don't
cool normally.
Low flowing sound of
Refrigerant is heard and
frost forms in inlet only
Flowing sound of
Refrigerant is not heard
and frost isn't formed.
A little high more than
ambient temperature.
Equal to ambient
temperature.
• A little Refrigerant discharges.
• Normal cooling is possible when
injecting of Refrigerant the
regular amount.
• No discharging of Refrigerant.
• Normal cooling is possible when
injecting of Refrigerant
the regular amount.
CL
OGGED B
Y DUS
T
PARTIAL
CLOG
WHOLE
CLOG
Freeze room and
Refrigerator don't
cool normally.
Freezer room and
Refrigerator
don't cool.
Flowing sound of
Refrigerant is heard and
frost forms in inlet only.
Flowing sound of
Refrigerant is not heard
and frost isn't formed.
A little high more than
ambient temperature.
Equal to ambient
temperature.
• Normal discharging
of refrigerant.
• The capillary tube is faulty.
• Normal discharging of
Refrigerant.
MOISTURE CLOG
Cooling operation
stops periodically.
Flowing sound of
Refrigerant is not heard
and frost melts.
Low than ambient
temperature
• Cooling operation restarts when
heating the inlet of capillary tube.
DEFE
CTIVE
C
OMPRE
S
SION
COMPRESSION
NO
COMPRESSION
Freezer and
Refrigerator
don't cool.
No compressing
operation.
Flowing sound of
Refrigerant is not
heard and no frost.
Low flowing sound of
Refrigerant is heard
and frost forms in inlet only.
A little high than
ambient temperature.
Equal to ambient
temperature.
• The pressure of high pressure
part in compressor is low.
• No pressure of high
pressure part in
the compressor.
Whether Compressor
runs or not.
Leakage Detection
• Observe discharging point of refrigerant which may be in the oil discharging
part in the compressor and hole of evaporator.
Moisture Clog.
Whether frost forms or
not in Evaporator.
Whether oil leaks or
not.
Frost formed normally
YES
No frost
or forms
in inlet
Observe the discharged
amount of Refrigerant.
Faulty Compressor.
Inject Refrigerant to
Compressor
Normal amount
No or much amount
Check Compressor
Clogged by dust. Gas leakage.
YES
(Check the leakage point) Frost formed normally
TROUBLESHOOTING (Mechanical Part)
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