59
TROUBLESHOOTING
※
R Self-diagnostics check list
LED
Item
Trouble contents
Diagnostic method
F
R
FZ-Sensor Error
Display error : separation of sensor
housing part, contact error, disconnection,
short circuit.
Display error of detecting temperature of
sensor : more than 149℉(+65°C) or less
than -58℉(-50°C)
The voltage of MAIN PCB CN30- “4” N76-”1”:
shall be between 4.5V~1.0V
FF-Sensor Error
The voltage of MAIN PCB CN30- “6” N76-”1”:
shall be between 4.5V~1.0V
FZ-DEF-Sensor
Error
The voltage of MAIN PCB CN30- “5” N76-”1”:
shall be between 4.5V~1.0V
FF-DEF-Sensor
Error
The voltage of MAIN PCB CN30- “8” N76-”1”:
shall be between 4.5V~1.0V
Ambient-Sensor
Error
The voltage of MAIN PCB CN78- “8” CN78-
”12”: shall be between 4.5V~1.0V
Flex room-Sensor
Error
The voltage of MAIN PCB CN78- “9” CN76-”1”:
shall be between 4.5V~1.0V
Humidity-Sensor
Error
Separation of sensor housing part,
contact error, disconnection, short circuit
The voltage of MAIN PCB CN30- “1” CN30-”3”:
shall be between 4.5V~1.0V
Ice Maker(FF) Sensor
Error
Display error : separation of sensor
housing part, contact error, disconnection,
short circuit.
Display error of detecting temperature of
sensor : more than 149℉(+65°C) or less
than -58℉(-50°C)
The voltage of MAIN PCB CN90- “1”↔ CN90-
”7”: shall be between 4.5V~1.0V
Ice Room Sensor
Error
The voltage of MAIN PCB CN78- “10” CN76-
”1”: shall be between 4.5V~1.0V
Sparkling-Sensor
Error
Display error : separation of sensor
housing part, contact error, disconnection,
short circuit.
Display error of detecting temperature of
sensor : more than 149℉(+65°C) or less
than -58℉(-50°C)
The voltage of ASSY KIT PCB CN32- “1”
CN32-”3”: shall be between 4.5V~1.0V
FZ-FAN Error
Display error during operation of
applicable fan motor : Feed back signal
line contact error, motor wire separation,
motor error
The voltage of MAIN PCB CN76- “3”(Yellow) ↔
CN76-”1”(Gray): shall be between 7V~12V
FF-FAN Error
Display error during operation of
applicable fan motor : Feed back signal
line contact error, motor wire separation,
motor error
The voltage of MAIN PCB CN76- “4”(Orange)
↔ CN76-”1”(Gray): shall be between 7V~12V
C-FAN Error
Display error during operation of
applicable fan motor : Feed back signal
line contact error, motor wire separation,
motor error
The voltage of MAIN PCB CN76- “5”(Sky-blue)
↔ CN76-”1”(Gray): shall be between 7V~12V
FZ-DEF Error
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
freezer compartment defrost is heating
continuously for more than 70 minutes.
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)
FF-DEF Error
Separation of fresh food 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 80 minutes.
After separating MAIN PCB CN70 wire from
PCB, resistance value between CN70 White
↔ CN70 Gray shall be 120(440) ohm±7%.
(Resistanc e value is varied by input power) 0
ohm : heater short, ∞ ohm : wire/bimetal open
(Must power off)