LG LRTN09314SW, Service Manual

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6-5 REFRIGERATING CYCLE
Troubleshooting Chart
CAUSE
REFRIGERAT
CONDITION
EVAPORATOR
CONDITION
TEMPERATURE
OF THE
COMPRESSOR
REMARKS
PARTIAL
LEAKAGE
Freezer and
Refrigerator don´t
get cold normally. Low flowing sound of
refrigerator is heard
and frost forms in inlet
only. A little higher than
ambient temperature. 1. A little refrigerator
has leaked.
2. Refrigerator runs
normally if you
recharge it.
L
E
A
K
A
G
E
WHOLE
LEAKAGE
Freezer and
Refrigerator don´t
get cold at all. Flowing sound of
refrigerant is not heard
and frost isn´t formed. Equal to ambient
temperature. 3. No discharging of
refrigerant.
4. Refrigerator runs
normally if yoy
recharge it.
PARTIAL
CLOG
Freezer and
Refrigerator don´t
get cold normally. Flowing sound of
refrigerant is heard and
frost forms in inlet only. A little higher than
ambient temperature
5. Normal discharginf
of refrigerant.
6. The capillary tube
is faulty.
C
L
O
G
G
E
D
B
Y
D
U
S
T
WHOLE
CLOG
Freezer and
Refrigerator don´t
get cold at all. Flowing sound of
refrigerant is not heard
and frost isn´t formed. Equal to ambient
temperature.
7. Normal discharging
of refrigerant.
MOISTURE
CLOG
Cooling operation
stops periodically. Flowing sound of
refrigerant is not heard
and frost melts. Lower than ambient
temperature.
8. Cooling operation
restarts when
heating the inlet of
capillary tube.
COMPRESSION
Freezer and
refrigerator don´t get
cold. Low flowing sound of
refrigerant is heard and
frost forms in inlet only. A little higher than
ambient temperature.
9. Low pressure on
high side.
D
E
F
E
C
T
IV
E
C
O
M
P
R
E
S
S
IO
N
CO
COMPRESSION
No compressing
operation. Flowing sound of
refrigerant is not heard
and no frost. Equal to ambient
temperature.
· No pressure of
high pressure side
in compressor.
Leakage Detection
Check for a leak which may be in the oil discharge in the compressor or in the evaporator.
YES
YES
Check if
Compressor runs.
Check if frost forms
on the evaporator.
Check for oil leaks.
Observe the
discharging amount
of refrigerant.
Moisture clog
Faulty Compressor
Recharge refrigerant to
compressor and check
cooling operation.
Clogged by dust.
Refrigerant leakage.
No frost or forms in
inlet only.
Normal formed frost.
Normal amount.
Large or small amount.
Check Compressor
Slight frost forms on
Evaporator.
(Locate and repair the leak.)
20