LG GR-S592QVC Service Manual ▷ View online
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6-1 COMPRESSOR AND ELECTRIC COMPONENTS
6. TROUBLESHOOTING
1
2
3
4
5
2
5
5
3
5
4
5
5
1
4
3
YES
YES
YES
YES
NO
NO
YES
YES
YES
NO
NO
NO
Power Source.
Remove the PTC-Starter
from the Compressor
and measure the voltage
between Terminal C of
Compressor and
Terminals 5 or 6 of PTC.
from the Compressor
and measure the voltage
between Terminal C of
Compressor and
Terminals 5 or 6 of PTC.
No Voltage.
(Rating Voltage
±10%)?
±10%)?
Replace OLP.
Reconnect.
Replace
PTC-Starter.
PTC-Starter.
Replace OLP.
O.K.
Check connection
condition.
condition.
OLP disconnected?
Advise the customer
to use a regular
Trans.
to use a regular
Trans.
Replace Compressor.
OLP works within
30 sec. in forcible
OLP operation by
turning instant power
on and off.
30 sec. in forcible
OLP operation by
turning instant power
on and off.
Components start in
the voltage of Rating
Voltage ±10%
below.
the voltage of Rating
Voltage ±10%
below.
Applied voltage isn't
in the range of Rating
Voltage ±10%.
in the range of Rating
Voltage ±10%.
Check the resistance
among M-C, S-C and
M-S in Motor
Compressor.
among M-C, S-C and
M-S in Motor
Compressor.
Check the resistance
of two terminals in
PTC-Starter.
of two terminals in
PTC-Starter.
Check if applying
a regular OLP.
a regular OLP.
Measure minimum
starting voltage after 5
min. for balancing cycle
pressure and cooling
the PTC.
starting voltage after 5
min. for balancing cycle
pressure and cooling
the PTC.
Check the
resistance of
Motor
Compressor.
resistance of
Motor
Compressor.
Check the
resistance of
PTC-Starter.
resistance of
PTC-Starter.
Check OLP.
Check
starting state.
starting state.
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6-2 PTC AND OLP
6
5
3
4
YES
NO
Normal operation of
Compressor is
impossible or poor.
Compressor is
impossible or poor.
Separate the PTC from
Compressor and
measure the resistance
between No. 5 and 6
(only RSIR Type) or No.
4 and 5 of PTC with a
Tester or Whistone
Bridge. (Figure 22)
Compressor and
measure the resistance
between No. 5 and 6
(only RSIR Type) or No.
4 and 5 of PTC with a
Tester or Whistone
Bridge. (Figure 22)
Separate the OLP
from Compressor and
check resistance
value between two
terminals of OLP with
a Tester. (Figure 23)
from Compressor and
check resistance
value between two
terminals of OLP with
a Tester. (Figure 23)
Observation value is
220V/50Hz : 47
220V/50Hz : 47
Ω
± 30%
220 - 240V/50Hz : 47
Ω
± 30%
110 -115V/60Hz : 6.8
Ω
± 30%
220V/60Hz : 47
Ω
± 30%
127V/60Hz : 22
Ω
± 30%
The resistance value is
0 or several
hundreds
0 or several
hundreds
Ω
.
The value is
∞
.
Check another
electric components.
electric components.
Replace OLP.
Check another
electric components.
electric components.
Replace
PTC.
PTC.
Figure 23
Figure 22
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6-3 ANOTHER ELECTRIC COMPONENTS
▼
Cooling is impossible
Compressor
doesn't run.
doesn't run.
Running state of
Compressor is poor.
Compressor is poor.
Check a starting
voltage.
voltage.
Check if current flows to
the following
components.
the following
components.
a. Thermistor
b. Starting devices
c. OLP
d. Compressor coil
e. Circuit Parts
Low voltage.
Poor contacting.
Shorted or broken.
Poor contacting
or shorted.
or shorted.
Coil shorted.
Poor contacting
or shorted.
or shorted.
Poor contacting
and broken.
and broken.
Shorted.
Lack of capacity.
Coil of motor
Compressor.
Compressor.
Replace
the compressor.
the compressor.
Replace
each component.
each component.
Raise the voltage.
Replace
each component.
each component.
Cause.
Check if current flows
to starting devices.
to starting devices.
Check current flowing
in sub-coil of
Compressor.
in sub-coil of
Compressor.
Check capacity of OLP.
The items described
above are normal.
above are normal.
▼
Cooling ability is poor
Fan motor
doesn't run.
doesn't run.
Much frost are sticked
to the EVAPORATOR.
to the EVAPORATOR.
Poor contacting.
Coil is shorted.
Shorted.
Replace
each component.
each component.
Replace
each component.
each component.
Replace
each component.
each component.
Check current flowing
in door S/W.
in door S/W.
Check current flowing
in the Fan Motor.
in the Fan Motor.
Check current flowing
of the following
components.
• Def. Sensor
• FUSE-M
of the following
components.
• Def. Sensor
• FUSE-M
Check current flowing
of the following
components.
• Sheath Heater
of the following
components.
• Sheath Heater
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COMPLAINT
POINTS TO BE CHECKED
REMEDY
Cooling is
• Is the power cord unplugged from the outlet?
• Plug to the outlet.
impossible.
• Check if the power S/W is set to OFF.
• Set the switch to ON.
• Check if the fuse of power S/W is shorted.
• Replace a regular fuse.
• Measure the voltage of power outlet.
• If voltage is low, wire newly.
Cooling ability
• Check if the set is placed close to wall.
• Place the set with the space of about 10cm.
is poor.
• Check if the set is placed close to stove, gas
• Place the set apart from these heat
•
cooker and direct rays.
•
appliances.
• Is the ambient temperature high or
• Make the ambient temperature below.
•
the room door closed?
• Check if putting in hot foods.
• Put in foods after they get cold.
• Did you open the door of the set too often
• Don't open the door too often and close
•
or check if the door is closed up?
•
it firmly.
• Check if the Control is set to "Min".
• Set the control to mid-position.
Foods in the
• Are foods placed in cooling air outlet?
• Place foods in high temperature section.
Refrigerator
•
(Front Part)
are frozen.
• Check if the Display LED is set to "Max".
• Set the Display LED to "Mid".
• Is the ambient temperature below 5°C?
• Set the Display LED to "Min".
Dew or ice
• Is watery foods kept?
• Seal up watery foods with wrap.
forms in the
• Check if putting in hot foods.
• Put in foods after they get cold.
chamber of
• Did you open the door of the set too
• Don't open the door too often and close
the set.
•
often or check if the door is closed up.
•
it firmly.
Dew forms
• Check if ambient temperature and humidity
• Wipe dew with a dry cloth. This happening
in the Out Case.
of surroumcling air are high.
•
is solved in low temperature and humidity
•
naturally.
• Is the gap in the door packed?
• Fill up the gap.
Abnormal
• Is the set positioned in a firm and even place?
• Adjust the Adjust Screw, and position
noise generates.
•
in the firm place.
• Does any unnecessary objects exist
• Remove the objects.
•
in the back side of the set?
• Check if the Drip Tray is not firmly fixed.
• Fix it firmly on an original position.
• Check if the cover of mechanical room
• Place the cover at an original position.
•
in below and front side is taken out.
To close the door
• Check if the door packing becomes dirty
• Clean the door packing.
is not handy.
•
by filth such as juice.
• Is the set positioned in a firm and even place?
• Position in the firm place and adjust the
•
Adjust Screw.
• Is too much food putted in the set?
• Keep foods not to reach the door.
Ice and foods
• Check if the inside of the set becomes dirty.
• Clean the inside of the set.
smell unpleasant.
• Did you keep smelly foods without wraping?
• Wrap smelly foods.
• It smells plastic.
• The new products smell plastic, but it is
•
removed after 1-2 weeks.
●
In addition to the items described left, refer to the followings to solve the complaint.
Check if dew forms in
the Freezer.
the Freezer.
Replace the
Components of
defrosting circuit.
Components of
defrosting circuit.
Check Refrigerating
Cycle.
Cycle.
Check the
Thermistor
Thermistor
Defrosting
is poor.
is poor.
The cycle
is faulty.
is faulty.
Repair the cycle.
Replace the
Thermistor.
Thermistor.
The operation of
the Thermistor is
poor.
the Thermistor is
poor.
6-4 SERVICE DIAGNOSIS CHART
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