Samsung RF23HT Series Service Manual page 63

TROUBLESHOOTING
※ R Self-diagnostics check list
LED
F R
or
Item
FZ-Sensor Error
FF-Sensor Error
Display error : separation of sensor
FZ-DEF-Sensor
housing part, contact error, disconnection,
Error
short circuit.
Display error of detecting temperature of
FF-DEF-Sensor
sensor : more than 149℉(+65°C) or less
Error
than -58℉(-50°C)
Ambient-Sensor
Error
PANTRY-Sensor
Error
Display error : separation of sensor
housing part, contact error, disconnection,
Ice Maker(FZ) Sensor
short circuit Display error of detecting
Error
temperature of sensor: more than 149℉
(+65°C) or less than -58℉(-50°C)
Humidity-Sensor 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
Ice Room Sensor
sensor : more than 149℉(+65°C) or less
Error
than -58℉(-50°C)
Display error during operation of
applicable fan motor : Feed back signal
FZ-FAN Error
line contact error, motor wire separation,
motor error
Display error during operation of
applicable fan motor : Feed back signal
FF-FAN Error
line contact error, motor wire separation,
motor error
Display error during operation of
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 80 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.
When the Freezer Ice Maker error occurs
Ice Maker(FZ)
more than 3 times, the error will be
Function Error
displayed.
Trouble contents
63
Diagnostic method
When measuring the voltage between the Main
PCB CN30-"4" ↔ CN76-"1", it should read
between 4.5V~1.0V.
When measuring the voltage between the Main
PCB CN30-"6" ↔ CN76-"1", it should read
between 4.6V~1.0V.
The voltage of MAIN PCB CN30- "5"↔ N76-
"1": shall be between 4.5V~1.0V
When measuring the voltage between the Main
PCB CN30-"8" ↔ CN76-"1", it should read
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 CN30- "9"↔ CN76-
" 1": shall be between 4.5V~1.0V
The Voltage of MAIN PCB CN90 #8<->#9: Shall
be between 4.5v ~ 1.0v
When measuring the voltage between the Main
PCB CN30-"3" ↔ CN76-"1", it should read
between 4.5V~1.0V.
The voltage of MAIN PCB CN90- "1"↔ CN90-
"7": shall be between 4.5V~1.0V
When measuring the voltage between the Main
PCB CN78-"10" ↔ CN78-"12", it should read
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
↔ CN72 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)
After replacing the Ice Maker, check if it
operates normal.