12-3 REFRIGERATION CYCLE
T Troubleshooting Chart
CAUSE
PARTIAL
LEAKAGE
m
COMPLETE
m LEAKAGE
© PARTIAL
_ CLOG
if)
©
m
t2J
._ WHOLE
_ CLOG
c
o9
-t
MOISTURE CLOG
COMP-
© RESSION
2°
m
"_J -rl
Mmo
o_ -_ NO COMP-
_ m_ RESSION
z
STATE OF
THE UNIT
Freezer
compartment and
Refrigerator don't
cool normally.
Freezer
compartment and
Refrigerator don't
cool normally.
Freezer
compartment and
Refrigerator don't
cool normally.
Freezer
compartment and
Refrigerator don't
cool.
Cooling operation
stops periodically.
Freezer and
Refrigerator don't
cool.
No compressing
operation.
STATE OF THE
EVAPORATOR
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 there is
no frost.
TEMPERATURE
OFTHE
COMPRESSOR
A little higher than
ambient
temperature.
Equal to ambient
temperature.
A little higher than
ambient
temperature.
Equal to ambient
temperature.
Lower than ambient
temperature.
A little higher than
ambient
temperature.
Equal to ambient
temperature.
REMARKS
o
o
Refrigerant level is low due
to a leak.
Normal cooling is possible by
restoring the normal amount
of refrigerant and repairing
the leak.
o
o
No discharging of
Refrigerant.
Normal cooling is possible by
restoring the normal amount
of refrigerant and repairing
the leak.
• Normal discharging of the
refrigerant.
• The capillary tube is faulty.
• Normal discharging of the
Refrigerant.
• Cooling operation restarts
when heating the inlet of the
capillary tube.
• Low pressure at high side of
compressor due to low
refrigerant level.
• No pressure in the high
pressure part of the
compressor.
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