Troubleshooting; Compressor And Electric Components - LG GR-M652Y*A Service Manual

6. TROUBLESHOOTING

6-1 COMPRESSOR AND ELECTRIC COMPONENTS

Power Source.
Check the
resistance of
Motor
Compressor.
Check the
resistance of
PTC-Starter.
Check OLP.
Check
starting state.
Remove the PTC-Starter
from the Compressor and
measure the voltage
between Terminal C of
Compressor and
Terminals 5 or 6 of PTC.
No Voltage.
Applied voltage isn't in
the range of Rating
Voltage 10%.
Check the resistance
among M-C, S-C and
M-S in Motor NO
Compressor.
Check the resistance
of two terminals in
PTC-Starter.
YES
Check if applying
a regular OLP.
Measure minimum
starting voltage after 5
min. for balancing cycle
pressure and cooling the
PTC.
(Rating Voltage
10%)?
YES
OLP disconnected?
Advise the customer
to use a regular
Trans.
YES
Replace Compressor.
YES
NO
OLP works within 30
sec. in forcible OLP
operation by turning
instant power on and
off.
NO
YES
Components start at
voltage 10% of
rated voltage.
- 24 -
YES
Replace OLP.
Check connection
condition.
Reconnect.
Replace
PTC-Starter.
YES
NO
Replace OLP.
O.K.
NO