LG GR-B197GVQ Service Manual page 67

TROUBLE DIAGNOSIS
-67-
CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK
2. No
cooling.
2) Refrigeration system
is
clogged.
Check the
clogged
evaporator by heating (as
soon as
the cracking sound
begins,
the
evaporator
start
freezing)
The
evaporator
does not cool
from the
beginnig
(no
evidence of moisture
attached).
The
evaporator
is the
same
as
before
even
heat is
applied.
Moisture
clogged.
No electric
power on
therm-
ostat.
Weld joint
clogged.
Drier
cloggeing.
Foreign material clogging.
Residual moisture
in the
evaporator.
Residual moisture.
Insufficient drier
capacity.
Residual moisture
in pipes.
Moisture
penetration
-
Leave it in the air.
-
Moisture
penetration.
into the refrigeration oil.
Caps
are
missed.
Air
blowing.
During transportation.
During
work.
Not performed.
Performed.
Too short time.
Low air pressure.
Less dry air.
Air Blowing.
Leave it in the air.
Caps
are
missed.
Short pipe insert.
Pipe
gaps.
Too much solder.
Too
large.
Damaged pipes.
Not dried in the compressor.
Elapsed
more
than 6 months after drying
Caps
are
missed.
No pressure when it is open.
During rest
time.
After work.
Compressor
cap is disconnected.
Foreign
materials
are
in the
pipe.
Not
performed.
Too short.
Impossible
moisture
confirmation.
Low air pressure.
Dry
drier
-
Drier
temperature.
Leave it in the air.
The
capillary
tube inserted
depth.
-
Too much.
Capillary
tube melts.
-
Over heat.
Clogged with foreign materials.
Reduced
cross
section by cutting.
-
Squeezed.
Desiccant
powder.
Weld oxides.
Drier
angle.
Check
on
package
condition.
Good
storage
after
finishing.