Refrigeration Cycle - LG LTNS16121V /00 Service Manual

5.9 REFRIGERATION CYCLE

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