LG GA-B409U QA Series

TROUBLESHOOTING (Mechanical Part)
-12-
1. COMPRESSOR AND ELECTRIC COMPONENTS
1
2
3
4
5
2
5
5
3
4
5
5
1
4 3
YES
YES
NO
YES
YES
NO
NO
5
YES
NO
YES
Power
Source.
Remove the Relay Assy
from the Compressor
and measure the voltage
between T erminal C of
Compressor and
T erminals M or S of
Relay Assy
No V oltage.
(Rating V oltage
±10%)
±10%)
Replace
Relay Assy
Replace
Relay Assy
O.K.
Advise the customer
to use a regular
T rans.
Replace Compresso r .
OLP works within
30 sec. in forcible
OLP operation by
turning instant power
on and o f f.
Components start in
the voltage of Rating
V oltage ±
Applied voltage isn't
in the range of Rating
Voltage
Check the resistance
among M-C, S-C and
M-S in Motor
Compressor.
Check the resistance of
two terminals in PTC-
Starte r .
Check if applying
a regular OL P .
Measure minimum
starting voltage after 5
min. for balancing cycle
pressure and cooling the
PTC.
Check the
resistance of
Motor
Compresso r .
Check the
resistance of
PTC-Starte r .
Check OL P .
Check
starting state.
10% below
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