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4. TROUBLESHOOTING
4-11) Unable to Defrost
F-DEF-HEATER : Read resistance between CN71 #5 and #9
R-DEF-HEATER : Read resistance between CN71 #7 and #9
F-DEF-SENSOR : Read resistance between CN40 #6 and #8
R-DEF-SENSOR : Read resistance between CN40 #8 and #11
Press the Power Freeze and the Fridge buttons at
the same time for 8 sec and then go into the 2nd
Test Mode.
Defrost Sensor Voltage is lower than 3.1V
Start
Forced F/R Defrost
Check all the sensors
Normal
Check Thermistor, Heater and
their contacts.
Replace the sensor
NO
Repair the connectors
NO
YES
YES
F/R-DEF Sensor is
normal (with Self Diagnosis)
Check Thermistor, Heater
and their connectors
NO
YES
F/R-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/R-DEF Sensor is
higher than +10˚C and +17˚C, it
will stop heating and go back
to Cooling Operation.
NOTE
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