Samsung RF28HMEDBSR Service Manual Page 63

French door refrigerator.
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※ R Self-diagnostics check list
LED
F
R
or
Item
FZ-Sensor Error
FF-Sensor Error
Display error : separation of sensor
F Z - D E F - S e n s o r
housing part, contact error, disconnection,
Error
short circuit.
Display error of detecting temperature of
F F - D E F - S e n s o r
sensor : more than 149℉(+65°C) or less
Error
than -58℉(-50°C)
A m b i e n t - S e n s o r
Error
Flex room-Sensor
Error
H u m i d i t y - S e n s o r
Separation of sensor housing part,
Error
contact error, disconnection, short circuit
Display error : separation of sensor
Ice Maker(FF) Sensor
housing part, contact error, disconnection,
Error
short circuit.
Display error of detecting temperature of
I c e R o o m S e n s o r
sensor : more than 149℉(+65°C) or less
Error
than -58℉(-50°C)
D i s p l a y e r r o r d u r i n g o p e r a t i o n o f
applicable fan motor : Feed back signal
FZ-FAN Error
line contact error, motor wire separation,
motor error
D i s p l a y e r r o r d u r i n g o p e r a t i o n o f
applicable fan motor : Feed back signal
FF-FAN Error
line contact error, motor wire separation,
motor error
D i s p l a y e r r o r d u r i n g o p e r a t i o n o f
applicable fan motor : Feed back signal
C-FAN Error
line contact error, motor wire separation,
motor error
Separation of freezer compartment
defrost heater housing part, contact
error, disconnection, short circuit or
FZ-DEF Error
temperature fuse error. Display error :
the defrosting does not finish though
freezer compartment defrost is heating
continuously for more than 70 minutes.
Separation of fresh food compartment
defrost heater housing part, contact
error, disconnection, short circuit or
FF-DEF Error
temperature fuse error. Display error :
the defrosting does not finish though
fresh food compartment defrost is heating
continuously for more than 80 minutes.
Trouble contents
63
TROUBLESHOOTING
Diagnostic method
The voltage of MAIN PCB CN30- "3" N76-"1":
shall be between 4.5V~1.0V
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
The voltage of MAIN PCB CN30- "1" CN30-
"7": shall be between 4.5V~1.0V
The voltage of MAIN PCB CN90- "1"↔ CN90-
"7": shall be between 4.5V~1.0V
The voltage of MAIN PCB CN78- "10" CN78-
"1": shall be between 4.5V~1.0V
The voltage of MAIN PCB CN76- "3"(Yellow) ↔
CN76-"1"(Gray): shall be between 7V~12V
The voltage of MAIN PCB CN76- "4"(Orange)
↔ CN76-"1"(Gray): shall be between 7V~12V
The voltage of MAIN PCB CN76- "5"(Sky-blue)
↔ CN76-"1"(Gray): shall be between 7V~12V
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)
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)

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