Ref Check a load, Value Contents, Ref. Def heater | Samsung RS2544

Appendix Ⅰ(Reference for circuit diagnostics)

Ref. 3) Check a load

F-DEFROST HEATER

Unplug the powercord and disconnect the

main PCB CN70 and CN71, the measure the

follows :

1.As shown in table below, measure the resistance between terminals, check load trouble and wire connection error.

2.The diagram of circuit was drawn based on the maximum load. When a repair is needed, see the electric wiring diagram on the back of refrigerator to troubleshoot the corresponding model.

3.For safety, you must turn the power off.

	Load	Measurement Termina l	Value	Contents

	Freezer Def heater	between CN70 13	0Ω	Temperature fuse, heater, wires short trouble
	Freezer Def heater	between CN70 13
		and CN70 7	∞Ω	Temperature fuse, heater, wires disconnection trouble
			∞Ω	Temperature fuse, heater, wires disconnection trouble
	Ref. Def heater	between CN70	0Ω	Temperature fuse, heater, wires short trouble
	Ref. Def heater	between CN70
		9 and CN70 7	∞Ω	Temperature fuse, heater, wires disconnection trouble
			∞Ω	Temperature fuse, heater, wires disconnection trouble
	1) Beverage StationTM heater	between CN70	0Ω	Heater, wires short trouble
	2) Dispenser heater
	2) Dispenser heater
	3) Water tank heater	11 and CN70 1	∞Ω	Heater, wires, and connector disconnection
	3) Water tank heater		∞Ω	Heater, wires, and connector disconnection
	Cover Over Solenoid	between CN71	0Ω	Coil, wires short trouble
	Cover Over Solenoid	between CN71
		7 and CN70 11	∞Ω	Coil, wires disconnection trouble
			∞Ω	Coil, wires disconnection trouble
	Ice Solenoid Valve	between CN71	0Ω	Coil, wires short trouble
	Ice Solenoid Valve	5 and CN70 11	∞Ω	Coil, wires disconnection trouble
		5 and CN70 11

	Auger Motor	between CN71	0Ω	Coil, wires short trouble
	Auger Motor	3 and CN70 11	∞Ω	Coil, wires disconnection trouble
		3 and CN70 11	∞Ω	Coil, wires disconnection trouble
	Cube Solenoid Valve	between CN71	0Ω	Coil, wires short trouble
	Cube Solenoid Valve	1 and CN70 11	∞Ω	Coil, wires disconnection trouble
			∞Ω	Coil, wires disconnection trouble

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Samsung RS2544, RS2666 Ref Check a load, For safety, you must turn the power off Load, Value Contents, Ref. Def heater

Contents

Model RS2544 RS2622 RS2644 RS2666 RS2777 Important Safety Notice Contents Door Alarm Multi-Flow SystemXtra SpaceTM Xtra FreshTM Cover using a screwdriver, and then disconnect To protect refrigerator in movementWith the door closed, remove the upper hinge It does not fall on you Nomenclature ModelsCompany Name Product R Refrigerator Label Location Specifications Freezer Refrigerator Warranty information Interior Views and Dimensions Shelves and BinsFreezer Refrigerator Dimensions of Refrigerator Inches Refrigeration Cycle and Cool Air Circulation Route Refrigerant Route in Refrigeration cycleFreezer Evaporator Dryer Capillary Tube Cool Air Circulation Freezer Refrigerator Mechanical Disassembly Refrigerator DisassemblyFreezer Disassembly PlasticWire Drawer in Freezer······························ Control Panel Door HandleBeverage StationTM Door Gasket Refrigerator Door Light Switch Refrigerator LightTempered Glass Shelf Plastic Drawers in Refrigerator Water Filter Upper DuctworkEvaporator Cover in the Refrigerator Evaporator Fan Motor Evaporator in Refrigerator Refrigerator ThermistorCoolSelect ZoneTM Thermistor CoolSelect ZoneTM Thermistor Freezer Door Light Switch Plastic Wire Drawer in FreezerDoor Bin in Freezer Freezer Shelf Ice maker is located inside of the ice dispenser assembly Disconnect the ice maker wire connectorAuger Motor Case Unlock the locking tabs to separate the ice maker kit Freezer Light Evaporator Cover in Freezer Evaporator in Freezer Freezer ThermistorAmbient Thermistor Ice-MakerThermistor Machine Compartment ＆ Electric Box Water SolenoidsCondenser Fan Sub-condenser Operation Function Temperature Control Function Digital Panel Quick Ice and Power Cool Functions Power FreezeQuick Ice functionChild Lock Function Fan Motor Delay Function of the Machine Compartment Ice & Water Dispenser FunctionCoolSelect ZoneTM Function RS2666,RS2777 Water Filter Indicator Function Filter IndicatorIce-Maker Function Preparation of Ice-maker Initial Operation functionJudgement Remark ·MICOM Port Water Supply function Defrost FunctionHeater on Heater OFF Defrost operation Beeps will cease immediately when the doors are closed Self-Diagnostics FunctionSelf-Diagnostics in the initial Power on Sound Function Error Error items of self-diagnosticsFunction error Error items LED Display Details Remarks Restoration Function for Power Outage This mode, only the display LEDs for temperature will be onLoad Operation Check Function Set Point Shift Function Shift the freezer temperature sensor Table of Set Point Shift Function Operation Function Shift the CoolSelect ZoneTM temperature sensor Shift the Ice maker temperature sensor Circuit Descriptions Source Power Circuit Reset CircuitOscillator Circuit Terminal Temperature Sensing Circuit Door S/W Sensing CircuitMicom Change DEF-sensor and Bimetal work in parallel Key Scan and Display CircuitKey Scan and display operation Key Scan CoolSelect ZoneTM Panel Circuit Fan Motor Bldc Drive Circuit Motor drive circuitVoltages between high-speed and low-speed Eeprom Circuit Option CircuitLoad Drive Circuit D602 COMP. equivalence circuit of drive section Diagnostics If power is not onStart Normal Assembly If the compressor and cooling fan motor don’t work normallyCheck after a lapse of 5 min Connection If defrost function Exchange and troubleshoot Corresponding sensorPerform forced defrosting for F Room at a time If the temperature sensor of F and R room has trouble If there is a trouble with self-diagnosisIf the ambient sensor has trouble Start Check if the iced solder of main PCB is Short If alarm sound If Ding-Dong sounds continuously StartIf Beep sounds continuously Start Remove causes after Without sound of buzzer operation Start Main PCB is normal buzzer normalDisplay’ If the panel PCB is not working normally ZoneTM panel If fan doesn’t work Reference Connections of door S/WDoor open DC Door close If CoolSelect ZoneTM isn’t operated normally RS2555, RS2577 If the lamp of CoolSelect ZoneTM is not lit StartIf the Panel PCB key isn’t selected Panel PCB has trouble for itself If the lamps of freezer / refrigerator does not light Is the inside lamp filament cut? Check the operation of SSR71 and Q701 If Crushed Ice/Cubed Ice doesn’t work properly Safety Instructions on Service Appendix ⅠReference for circuit diagnostics DC 0V Stop ConditionResistance value ∼DC 12V load working condition For safety, you must turn the power off Load Value ContentsRef Check a load Ref. Def heater Ref Check Door S/W Lamp Lamp on the REF 878 834791 749 Ref Service part lists of each circuit board Part Name Specifcation ’TYPage Page Electronics Refrigerator Division 2003 Code DA82-00001D