LG GR-459GTCA, Service Manual

Page: 15 / 60

1. COMPRESSOR AND ELECTRIC COMPONENTS
TROUBLESHOOTING (Mechanical Part)
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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 Terminal C of
Compressor and
Terminals M or S of
Relay Assy
No Voltage.
(Rating Voltage
±10%)?
Replace
Relay Assy
Replace
Relay Assy
O.K.
Advise the customer
to use a regular
Trans.
Replace Compressor.
OLP works within
30 sec. in forcible
OLP operation by
turning instant power
on and off.
Components start in
the voltage of Rating
Voltage ±10% below.
Applied voltage isn't
in the range of Rating
Voltage ±10%.
Check the resistance
among M-C, S-C and
M-S in Motor
Compressor.
Check the resistance of
two terminals in PTC-
Starter.
Check if applying
a regular OLP.
Measure minimum
starting voltage after 5
min. for balancing cycle
pressure and cooling the
PTC.
Check the
resistance of
Motor
Compressor.
Check the
resistance of
PTC-Starter.
Check OLP.
Check
starting state.