5.9 REFRIGERATION CYCLE
Troubleshooting Chart
Leakage Detection
Observe the discharging point of the refrigerant in the compressor and evaporator.
Compressor
starts working?
Yes
Check electrical
connections
No
Check
status for
PTC & OLP
Se forma
escarcha en
evaporador
Se forma
escarcha en
evaporador
Escarcha
en todo el
evaporador
Clogged by
moisture
Hacer barrido a
tuberías para limpiar
el sistema
Hacer barrido a
tuberías para limpiar
el sistema
No se forma escarcha o
solo en la entrada del
evaporador
Existen fugas
de aceite
Si
Gas leakage
Detect leakage
and repair it
No
Breake
service tube
Observar cantidad
de refrigerante
expulsado
Cantidad
normal
Compressor
with failures
Remove
compressor
Hacer barrido a tuberías
para limpiar y/o remover
residuos de humedad del
sistema
Cambiar Drier
Hacer barrido a tuberías
para limpiar y/o remover
residuos de humedad del
sistema
Cambiar Drier
Install compressor
(new or repaired)
Hacer vacío al
sistema y cargar
refrigerante
Hacer vacío al
sistema y cargar
refrigerante
Nada o poca
cantidad
IF the problem
persists
Start
Hacer barrido a
tuberías para limpiar
el sistema
Cambiar Drier
Start
Hacer vacío al
sistema y cargar
refrigerante
Hacer vacío al
sistema y cargar
refrigerante
Hacer barrido a
tuberías para limpiar
el sistema
Cambiar Drier
Hacer vacío al
sistema y cargar
refrigerante
Hacer vacío al
sistema y cargar
refrigerante
24
PARTIAL
CLOG
COMPLETE
CLOG
CLOGGED BY
MOISTURE
NO
CAUSE
PARTIAL
LEAKAGE
STATE OF
THE UNIT
COMPRESSOR
TEMPERATURE
STATE OF THE
EVAPORATOR
REMARKS
COMPLETE
LEAKAGE
Cooling operation
stops running
periodically.
There’s no
compression work.
A few amount of refrigerant has been
discharged.
Normal cooling is possible when a
regular amount of refrigerant has been
charged.
Normal discharge of refrigerant.
Normal discharging of the refrigerant.
The capillary pipe is faulty.
No discharging refrigerant
COMPRESSION
The pressure of the high pressure
section of the compressor is low.
There’s no pressure in the high
pressure section of the compressor.
LEAKAGES
CLOGGED BY
DUST
DEFECTIVE
COMPRESSION
Freezer compartment
and refrigerator
don’t cool normally.
Low flowing sound of refrigerant
is heard and frost forms in inlet
only.
A little higher than
ambient temperature.
Freezer compartment
and refrigerator never
cool normally.
You cannot hear the sound of
the refrigerant flow and the frost
is not formed.
Equal to ambient
temperature.
Freezer compartment
and refrigerator do not
cool enough.
You can hear the sound of the
refrigerant flow and the frost is
only formed in the inlet.
A little higher than
ambient temperature.
Equal to ambient
temperature.
A little higher than
ambient temperature.
Equal to ambient
temperature.
Lower than
ambient temperature.
You can hear the sound of the
refrigerant flow and the frost is
not formed.
You cannot hear the sound of
the refrigerant flow and the frost
is melting.
Low flowing sound of refrigerant
is heard and frost forms in inlet
only.
You cannot hear the sound of
the refrigerant flow and the frost
is not formed.
Freezer and Refrigerator
are not cooling
Freezer and Refrigerator
never get cold.
Normal cooling is possible when a
regular amount of refrigerant has been
charged.
Cooling operation restarts when
heating the inlet of the capillary pipe.
COMPRESSION
Start
Start
Start
Detect leakage
and repair it
Gas leakage
Содержание LTNS16121V /00
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