-16-
CAUSE
STATE OF
THE SET
TEMPERATURE
OF THE
COMPRESSOR
STATE OF THE
EVAPORATOR
REMARKS
PARTIAL
LEAKAGE
WHOLE
LEAKAGE
PARTIAL
CLOG
WHOLE
CLOG
MOISTURE
CLOG
COMP-
RESSION
NO COMP-
RESSION
LEAKAGE
CLOGGE
D
BY
DUST
DEFECTIVE
COMPR
ES
SION
Freezer room and
Refrigerator don't cool
normally.
Freezer room and
Refrigerator don't cool
normally.
Freeze room and
Refrigerator don't cool
normally.
Freezer room and
Refrigerator don't
cool.
Cooling operation
stops periodically.
Freezer and
Refrigerator don't
cool.
No compressing
operation.
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.
Flowing sound of Refrigerant is
heard and frost forms in inlet
only.
Flowing sound of Refrigerant is
not heard and frost isn't formed.
Flowing sound of Refrigerant is
not heard and frost melts.
Low flowing sound of Refrigerant
is heard and frost forms in inlet
only.
Flowing sound of Refrigerant is
not heard and no frost.
A little high more than
ambient temperature.
Equal to ambient
temperature.
A little high more than
ambient temperature.
Equal to ambient
temperature.
Low than ambient
temperature.
A little high 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.
• Normal discharging of
refrigerant.
• The capillary tube is faulty.
• Normal discharging of
Refrigerant.
• Cooling operation restarts
when heating the inlet of
capillary tube.
• The pressure of high pressure
part in compressor is low.
• No pressure of high pressure
part in the compressor.
YES
YES
Whether Compressor
runs or not.
Whether frost
forms or not in
Evaporator.
Observe the discharged
amount of Refrigerant.
Inject Refrigerant to Compressor
and check cooling operation.
Clogged by dust.
Gas leakage.
Faulty
Compressor.
Moisture Clog.
Whether oil
leaks or not.
Frost formed normally
Normal amount
No or much amount
(Check the leakage point)
Frost formed normally
No frost
or forms
in inlet only
Check Compressor
5. REFRIGERATING CYCLE
Troubleshooting Chart
Leakage Detection
•
Observe discharging point of refrigerant which may be in the oil discharging part in the compressor and hole of evaporator.
