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PRECAUTIONS(SAFETY WARNINGS)
4-5-2. Unable to Defrost
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cnSP@CT@@CW
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cnSP@CW@@CT
F-DEF-HEATER : Read resistance between MAIN PBA
CN70_1 #3 and SMPS PBA CN01 #3
F-DEF-SENSOR : Read resistance between CN30 #4
and #7.
Press the FREEZE AND ALARM buttons at the same
time for 6 sec and then Touch the Freeze button.
Defrost Sensor Voltage is lower than 3.1V.
Start
Forced F Defrost
Check all the sensors
Normal
Check Thermistor, Heater and
their contacts.
Replace the sensor.
NO
Repair the connectors
• Sensor Check Point
1. EXT-ENSOR
2. F-SENSOR
3. F-DEF-SENSOR
4. R-SENSOR
5. R-DEF-SENSOR
6. CV-SENSOR
7. CV-DEF-SENSOR
8. HUM1-SENSOR
9. HUM2-SENSOR
10. ICE-ROOM-SENSOR
11. PANTRY-SENSOR
12. ICE-MAKER-SENSOR
13. IR-SENSOR
NO
YES
YES
F-DEF Sensor is
normal (with Self Diagnosis)
Check Thermistor, Heater and their
connectors
NO
YES
F-DEF Heater is normal
Forced Operation for a certain time.
NO
YES
NO
NO
Defrost Sensor Temp is
lower than -5°C
Power
is supplied to Defrost
Heater.
Repair or Replace defective
relays, or PBA Ass'y
MAIN PBA
connectors are normal.
YES
YES
It goes
back to Cooling Operation after
heating
When F-DEF Sensor is higher than
+10℃ and +17℃, it will stop heating
and go back to Cooling Operation.
Note
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