60
TROUBLESHOOTING
Self-diagnostics check list
Trouble contents
Item
LED
FR
Diagnostic method
FZ-Sensor Error
FF-Sensor Error
FZ-DEF-Sensor Error
FF-DEF-Sensor Error
Ambient-Sensor Error
Flex room-Sensor Error
The voltage of MAIN PCB CN30- “6”↔N76-”1”:
shall be between 4.5V~1.0V
The voltage of MAIN PCB CN30- “5”↔N76-”1”:
shall be between 4.5V~1.0V
The voltage of MAIN PCB CN30- “8”↔N76-”1”:
shall be between 4.5V~1.0V
The voltage of MAIN PCB CN78- “8”↔CN78-
”12”: shall be between 4.5V~1.0V
The voltage of MAIN PCB CN78- “9”↔CN76-”1”:
shall be between 4.5V~1.0V
Humidity-Sensor Error
The voltage of MAIN PCB CN30- “1”↔CN30-”7”:
shall be between 4.5V~1.0V
Display error : separation of
sensor housing part, contact
error, disconnection, short
circuit.
Display error of detecting
temperature of sensor :
more than 149。F(+65℃) or less
than -58。F(-50℃)
Separation of sensor housing part,
contact error, disconnection, short circuit
Ice Maker(FF)
Sensor Error
The voltage of MAIN PCB CN90- “1”↔CN90-”7”:
shall be between 4.5V~1.0V
Display error : separation of sensor
housing part, contact error,
disconnection, short circuit.
Display error of detecting temperature of
sensor : more than 149。F(+65℃) or less
than -58。F(-50℃)
Ice Room Sensor Error
The voltage of MAIN PCB CN78- “10”↔CN78-
”1”: shall be between 4.5V~1.0V
Display error during operation of
applicable fan motor : Feed back signal
line contact error, motor wire separation,
motor error
FZ-FAN Error
The voltage of MAIN PCB CN76- “3”(Yellow)↔
CN76-”1”(Gray): shall be between 7V~12V
Display error during operation of
applicable fan motor : Feed back signal
line contact error, motor wire separation,
motor error
FF-FAN Error
The voltage of MAIN PCB CN76- “4”(Orange)↔
CN76-”1”(Gray): shall be between 7V~12V
Display error during operation of
applicable fan motor : Feed back signal
line contact error, motor wire separation,
motor error
C-FAN Error
The voltage of MAIN PCB CN76- “5”(Sky-blue)↔
CN76-”1”(Gray): shall be between 7V~12V
Separation of freezer compartment
defrost heater housing part, contact
error, disconnection, short circuit or
temperature fuse error.
Display error : the defrosting does not
finish though fresh food compartment
defrost is heating continuously for more
than 70 minutes.
FZ-DEF Error
After separating MAIN PCB CN70 wire from PCB,
resistance value between CN70 Brown ↔ CN70
Gray shall be 63(230) ohm± 7%.(Resistance
value is varied by input power)
0 ohm : heater short,
∞
ohm : wire/bimetal open
(Must power off)
The voltage of MAIN PCB CN30- “3”↔N76-”1”:
shall be between 4.5V~1.0V
AW3 SM-EN 2011.3.31 2:55 PM 페 이 지 6 0 i n
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