Faults - LG GR-B197GVQ Service Manual

2. Faults
2-1. Power
2-2.
Compressor
T R O U B L E D I A G N O S I S
- 7 6 -
Problems Causes Checks Measures Remarks
No power
on
-
Power cord
cut.
-
Check the
voltage
with
tester.
-
Replace
the
components.
outlet.
-
Faulty connector insertion.
-
Check visually.
-
Reconnect the connecting
parts.
-
Faulty
connection between
plug
-
Check
visually.
-
Reconnect the
connecting parts.
and adapter.
Fuse blows
out.
-
Short circuit
by
wrong connection.
-
Check the fuse with
tester
-
Find and
remove
the
cause
of
-
Replace
with rated
-
Low voltage products
are or
visually. problem(ex. short, high voltage, fuse after confirming
connected
to high voltage.
-
Check the
input
volt
are
with
tester
low
voltage).
its
specification.
-
Short circuit by insects. (between power cord and products).
-
Replace with rated fuse.
-
Electricity leakage.
-
Check the resistance of power cord If fuse blowns out
-
High voltage. with tester (if it is 0Ω, it is shorted). frequently, confirm
-
Short circuit of
components
the
cause
and
prevent.
(tracking due to moisture and dust
penetration).
Problems Causes Checks Measures Remarks
Compressor
-
Faulty PTC.
-
Check the resistance.
-
If resistance is infinite, replace it
does not Vlaue:∞ is defective. with
new one.
operate.
-
If it is not infinite, it is normal.
-
Check other
parts.
-
Compressor is frozen.
-
If compressor assembly
parts are
-
During forced operation:
normal (capacitor, PTC, OLP),
-
Operates: Check other
parts.
apply
power
directly to the
-
Not
operate:
Replace the frozen
compressor
to
force
operation.
compressor with
new one,
weld,
evacuate,
and
recharge refrigerant.
OLP It
starts
as soon as
it is
?
Refer
to
weld
repair procedures.
contacted.
Auxiliary winding
Main
winding
Power