LG LSC27990TT Service Manual page 50

TROUBLE DIAGNOSIS
CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK
2. No cooling.
2) Refrigeration system is clogged.
Moisture
clogged.
No electric
power on
thermo-
stat.
Residual m oisture Air Blowing.
intheevaporator.
Residual m oisture.
Notperformed.
Tooshort.
Impossible moisture
confirmation.
Lowair pressure.
Leaveit inthe air. [ Duringresttime.
/
• Afterwork.
Capsare missed.
Notdriedinthe compressor.
Elapsedmorethan6 monthsafterdrying
Capsare missed.
Nopressurewhen it isopen.
Insufficient drier FDrydrier- Driertemperature.
capacity, m•Air dry Checkon package
condition.
Goodstorageafter
finishing.
Residual m oisture Capsare missed. _ Duringtransportation.
inpipes. • Duringwork.
Air blowing.F Notperformed.
/ Performed.
Tooshorttime.
Lowair pressure.
Lessdry air.
Moisture penetration - Leaveit inthe air.- Moisture penetration.
intothe refrigeration o il.
Weldjoint
clogged.
Shortpipe insert.
Pipegaps. FToolarge.
LDamaged pipes.
Toomuchsolder.
Drierclogging.
Thecapillary tube inserted depth.- Toomuch.
Capillary tubemelts.- Overheat.
Clogged withforeignmaterials._ Desiccant p owder.
I eld oxides.
Drierangle.
Reducedcrosssectionbycutting.- Squeezed.
Compressor c ap is disconnected.
Foreign materialclogging. L Foreignmaterials areinthe pipe.
• Heat a clogged evaporator to
check it.As soon as the
cracking sound starts, the
evaporator will begin to
freeze.
• The evaporator does not cool
from the beginning
(no evidence of moisture
attached).
The evaporator is the same
as before even heat is
applied.
- 50 -