Samsung RF23HT Series Service Manual

63TROUBLESHOOTING※ R Self-diagnostics check listLED Item Trouble contents Diagnostic methodF RorFZ-Sensor ErrorDisplay error : separation of sensorhousing part, contact error, disconnection,short circuit.Display error of detecting temperature ofsensor : more than 149℉(+65°C) or lessthan -58℉(-50°C)When measuring the voltage between the MainPCB CN30-"4" ↔ CN76-"1", it should readbetween 4.5V~1.0V.FF-Sensor ErrorWhen measuring the voltage between the MainPCB CN30-"6" ↔ CN76-"1", it should readbetween 4.6V~1.0V.FZ-DEF-SensorErrorThe voltage of MAIN PCB CN30- “5”↔ N76-”1”: shall be between 4.5V~1.0VFF-DEF-SensorErrorWhen measuring the voltage between the MainPCB CN30-"8" ↔ CN76-"1", it should readbetween 4.5V~1.0V.Ambient-SensorErrorThe voltage of MAIN PCB CN78- “8”↔ CN78-”12”: shall be between 4.5V~1.0VPANTRY-SensorErrorThe voltage of MAIN PCB CN30- “9”↔ CN76-” 1”: shall be between 4.5V~1.0VIce Maker(FZ) SensorErrorDisplay error : separation of sensorhousing part, contact error, disconnection,short circuit Display error of detectingtemperature of sensor: more than 149℉(+65°C) or less than -58℉(-50°C)The Voltage of MAIN PCB CN90 #8<->#9: Shallbe between 4.5v ~ 1.0vHumidity-SensorErrorSeparation of sensor housing part,contact error, disconnection, short circuitWhen measuring the voltage between the MainPCB CN30-"3" ↔ CN76-"1", it should readbetween 4.5V~1.0V.Ice Maker(FF) SensorErrorDisplay error : separation of sensorhousing part, contact error, disconnection,short circuit.Display error of detecting temperature ofsensor : more than 149℉(+65°C) or lessthan -58℉(-50°C)The voltage of MAIN PCB CN90- “1”↔ CN90-”7”: shall be between 4.5V~1.0VIce Room SensorErrorWhen measuring the voltage between the MainPCB CN78-"10" ↔ CN78-"12", it should readbetween 4.5V~1.0V.FZ-FAN ErrorDisplay error during operation ofapplicable fan motor : Feed back signalline contact error, motor wire separation,motor errorThe voltage of MAIN PCB CN76- “3”(Yellow) ↔CN76-”1”(Gray): shall be between 7V~12VFF-FAN ErrorDisplay error during operation ofapplicable fan motor : Feed back signalline contact error, motor wire separation,motor errorThe voltage of MAIN PCB CN76- “4”(Orange)↔ CN76-”1”(Gray): shall be between 7V~12VC-FAN ErrorDisplay error during operation ofapplicable fan motor : Feed back signalline contact error, motor wire separation,motor errorThe voltage of MAIN PCB CN76- “5”(Sky-blue)↔ CN76-”1”(Gray): shall be between 7V~12VFZ-DEF ErrorSeparation of freezer compartmentdefrost heater housing part, contacterror, disconnection, short circuit ortemperature fuse error. Display error :the defrosting does not finish thoughfreezer compartment defrost is heatingcontinuously for more than 80 minutes.After separating MAIN PCB CN70 wire fromPCB, 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/bimetalopen (Must power off)FF-DEF ErrorSeparation of fresh food compartmentdefrost heater housing part, contacterror, disconnection, short circuit ortemperature fuse error. Display error :the defrosting does not finish thoughfresh food compartment defrost is heatingcontinuously for more than 80 minutes.After separating MAIN PCB CN70 wire fromPCB, resistance value between CN70 White↔ CN70 Gray shall be 120(440) ohm± 7%.(Resistanc e value is varied by input power) 0ohm : heater short, ∞ ohm : wire/bimetal open(Must power off)Ice Maker(FZ)Function ErrorWhen the Freezer Ice Maker error occursmore than 3 times, the error will bedisplayed.After replacing the Ice Maker, check if itoperates normal.