Daewoo frs20 manual Function of Each Sensor, Micom

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5-2. Function of Each Sensor

- Dispenser Model

CONTENTS

REMARKS

Compensation of
R-sensor ON/OFF temp.	IC1
B	(MICOM)

C

A

[F-sensor]

1)It senses the temperature of freezer compartment and control Comp., F-fan ON/OFF

2)How it works;

Working Point	Low ON	Mid OFF	High OFF
Working Temp.	-11℃	-16℃	-19℃
Resistance	≒9.32㏀	≒15.19㏀	≒15.58㏀
Sensing Voltage	≒3.24V	≒2.93V	≒2.73V

[R-sensor]

1)It senses the temperature of refrigerator compartment and control R-fan ON/OFF

2)How it works;

	Working Point	Low ON		Mid OFF		High OFF
	Working Temp.	7.7℃		5.2℃		3.2℃
	Resistance	≒23.33㏀		≒24.05㏀		≒24.76㏀
	Sensing Voltage	≒2.96V		≒2.83V		≒2.72V
[D-sensor]
1) It senses return point of defrosting heater.
2) How it works;

	Working Point		Return point of defrosting heater
	Working Temp.			13℃
	Resistance			≒22.56㏀
	Sensing Voltage			≒3.08V

*In case temperature of refrigerator compartment is weak or insufficient though comp. and R-fan operate in normal way;

1)Cut J1 on the M-PCB, then temp. is lowered 1.5℃ than [Mid OFF point]

2)Cut J1 and J2 on the M-PCB, then the temp, is lowered 3℃.

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Contents Refrigerator N T E N T S Page External Views FRSN-U20DB / EB FRSN-U20FB / GB Name of Each Parts Freezer Compartment Refrigerator Compartment Freezer Compartment Refrigerator Specification Door Switch , F / R Specification 220~240V Models onlyBasic Model Dispenser Model AC220V / 192WDisplay Operation and FunctionsFront PCB button Dispenser ModelReference Please wait Defrost Mode CompDefrosting Cycle Fan Heater Flow Chart of Defrosting Start Fan Voltage of Control Mode Forced Defrosting ModeSensor FAN, R-FAN, C-FAN VoltageBuzzer or Alarm Control Louver Heater ControlControl of Interior Lights FRSN-U20DA Basic Model DemonstrationMain PCB Resistance of R-sensor Mid ON/OFF Point Compensation of R-sensor ON/OFF PointBasic Model LED Display of Inner Control Error DisplayRT-S Dispenser Model Cled Display of Front PCB Error Code ContentsBasic Model Dispenser Model Eierror Summary of Function Basic Model Inner ControlDispenser Model Front PCB Automatic Icemaker Dispenser Model Back up Function Basic ModelStart Ice separating drop mode Dispenser Control Function Lamp Water S/V Circuit Operation Power Circuit DiagramBasic Model Dispenser Model ※ Voltage of every partMicom Function of Each SensorDispenser Model How it works Relay FunctionIC8 Fan Function Wiring Diagram DiagramDispenser Model Circuit Diagram of Main PCB Page Dispenser Model Page Component Locate Wiew Front View Dispenser + Home bar ModelInner View Machine Compartment EvaporatorHose Ice Maker Tube Assembly HOW to Check Each PartsDisassembling Procedure How to check Hose Ice Maker Tube AsHow to Check Hose Ice Maker Tube Assembly Bracket Geared Motor AssemblyHow to Check Micro Switch Dispenser Micro Switch▷ Good 215Ω±10% SOL2003-01B 193 ~ 236Ω Dispenser Solenoid Valve88 ~ DC 12V,1.5W ▷Check Change Flap Heater ASCheck Point Remark Main PCBCompensation Used when making R-temp. down ▷ Remove 2 screws on top front of ice maker Ice MakerIce Dropping Motor ▷ Good RS-360RH-14250 ~ 14Ω How to Check Ice MakerBlue Circle On Close※ How to replace Front PCB Faulty Start F/R lights OFF , F-PCB Power OFFTrouble Diagnosis StartFreezer Compartment 4th pipe from buttomDefrost Heater 192W 252 Ω Removing and replacing Freezer parts Removing and replacing Freezer parts Defrost Heater Ice Formation on F-Louver Start Switch to pull forward Disconnection / breaking of Freezer Lights Wires StartLight cover Cover and pull forwardRefrigerator Compartment Remove screws of light cover Hold the bottom Cover and pull Disconnection / Breaking of Refrigerator Lights Wires StartChange the light BulbsDoor is open too long ? Sensor is OK ? +screw driver Removing of Check ValveOperation Noise of Refrigerator Page Attach a absorber on point ③ accumulator Troubleshooting of Evaporator SoundFan Noise Start Fan is damaged Or transformed ? Troubleshooting of Fan Noise Pipe Noise Start Door Cooling Cycle Heavy Repair Contents ToolsBe sure to replace drier when repairing pipes Precautions During Heavy RepairUse special parts and tools for R-134a or R-600a Drier part with a nipper and then cut low pressure sideRemove residual refrigerant more than 5 minutes later after Practical Work for Heavy RepairClose valve ① To the low pressure sideAn evacuated bombe Be sure to chargeElectronic leakage tester Take a leakage test on the welded or suspicious area with anLow HighBrazing Reference Drawings Compressor Suction PipeInstallation Preparation Installation GuideDimensions including Door Handles Width*Depth*Height 903mm X 734.5mm X 1790mm※Remove front bottom cover first, if it is attached If the refrigerator can not enter the doorReplacing Freezer Door Case freezer door is lower Than refrigerator door Refrigerator Leveling & Door AdjustmentLeave a sufficient distance when cutting the tubes Join connector to water tap Get ready to install water lineAttach the filter box Remove any substance from filterConnect water tube 2Insert the fastening ring into the Water tubeDispenser Water Flow Cabinet Machine Room / Eva Part Refrigerator Room Freezer Room Freezer Door Refrigerator Door Reference