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8-4 TROUBLESHOOTING
PROBLEM INDICATED BY CHECK CHECKING METHOD CAUSE SOLUTION
Power source 1.
The whole DISPLAY
1. FREEZER/ Check if freezer or Power source is poor. Check outlet voltage.
is poor.
LED/SEVEN SEGMENT
REFRIGERATOR. refrigerator door is open
DISPLAY is off.
and check display.
2.
DISPLAY LED/
2. If lamp is dim. Check visually. Applied voltage error. Use boosting transformer.
SEVEN SEGMENT
3. The connection of Check connection of connector connection Reconnect connector.
DISPLAY operates the main PWB connector. is poor.
abnormally connector. Transformer fuse is open. Replace transformer.
Cooling is poor. No cooling. 1. If the compressor Use Test Mode1 Compressor locked or Replace compressor.
operates.
(forced cooling).
blocked.
If less than 7 minutes pass OLP, PTC, or Replace OLP, PTC.
after compressor shuts off, compressor are failed. Replace main PWB.
don’t press the key and
wait. Connection wire is defective. Check the connection of the
black wire of the main PWB
connector (CON1).
2. If refrigerant is leaking. Measure the amount of frost Refrigerant leakage. Replace the leaking part and
. sticking on evaporator replace any lost refrigerant.
and the surface temperature
of the condenser pipe.
Freezer 1. If fan motor Use Test Mode 1 Fan motor is defective. Replace the fan motor.
temperature is operates. (forced cooling).
incorrect Connection wire is defective. Refer to 8-2-4. 2 and check
2. If defrosting Check the amount of frost Defrosting is poor. See DEFROSTING
is normal. sticking on the evaporator . is poor, page 35.
3. If sensor Check the resistance Sensor resistance is Replace sensor.
is normal. of the refrigerator incorrect.
sensor.
4. Gasket seal incorrect. Check the seal when Door liner damaged. Replace door liner.
the door is closed.
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