Daewoo frs20 manual Trouble Diagnosis, Faulty Start F/R lights OFF , F-PCB Power OFF

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9. TROUBLE DIAGNOSIS

9-1. Faulty Start (F/R lights OFF , F-PCB Power OFF)

Start

Power cord or Fuse	Y
Power cord or Fuse
is disconnected ?
N
1’st power of SMPS	N
1’st power of SMPS
is on?
Y
Main PCB Fuse is	Y
disconnected?

N

VoltageN (DC12V/14.5V/5V) on

Main PCB is OK?

Change the Main Fuse

(AC250V 15A)

(In the left side of

machine compartment)

Check power Cord connection from machine compartment and to CN1 of M-PCB.

Change the Fuse

(AC250V 3.15A)

(on the Main PCB)

Y

Wire connection of F-PCB is OK?

N

※Refer to the 5-1. (Power circuit diagram)

Y

Change Main PCB

Checkup and connect

F-PCB wires.

Change F-PCB AS.

※How to replace Front PCB

1)Insert a flat tip driver into the left down groove of panel frame and snap it out smoothly.

2)Separate 2 housings of 10P / 7P from Front PCB. (Do not hold only wires to pull out.)

3)Unscrew (7 points) to remove Front PCB.

*Follow the reverse order when assembling.

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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 Basic Model Dispenser Model Specification 220~240V Models onlyDoor Switch , F / R AC220V / 192WOperation and Functions DisplayDispenser Model Front PCB buttonReference Please wait Defrost Mode CompDefrosting Cycle Fan Heater Flow Chart of Defrosting Start Sensor FAN, R-FAN, C-FAN Forced Defrosting ModeFan Voltage of Control Mode VoltageBuzzer or Alarm Control Louver Heater ControlControl of Interior Lights FRSN-U20DA Demonstration Basic ModelCompensation of R-sensor ON/OFF Point Main PCB Resistance of R-sensor Mid ON/OFF PointError Display Basic Model LED Display of Inner ControlRT-S Error Code Contents Dispenser Model Cled Display of Front PCBBasic Model Dispenser Model Eierror Summary of Function Basic Model Inner ControlDispenser Model Front PCB Back up Function Basic Model Automatic Icemaker Dispenser ModelStart Ice separating drop mode Dispenser Control Function Lamp Water S/V Basic Model Dispenser Model Power Circuit DiagramCircuit Operation ※ Voltage of every partFunction of Each Sensor MicomDispenser Model Relay Function How it worksIC8 Fan Function Diagram Wiring DiagramDispenser Model Circuit Diagram of Main PCB Page Dispenser Model Page Component Locate Wiew Front View Dispenser + Home bar ModelInner View Evaporator Machine CompartmentDisassembling Procedure HOW to Check Each PartsHose Ice Maker Tube Assembly How to check Hose Ice Maker Tube AsBracket Geared Motor Assembly How to Check Hose Ice Maker Tube AssemblyDispenser Micro Switch How to Check Micro Switch88 ~ DC 12V,1.5W Dispenser Solenoid Valve▷ Good 215Ω±10% SOL2003-01B 193 ~ 236Ω ▷Check Change Flap Heater ASMain PCB Check Point Remark Compensation Used when making R-temp. down Ice Maker ▷ Remove 2 screws on top front of ice makerBlue Circle How to Check Ice MakerIce Dropping Motor ▷ Good RS-360RH-14250 ~ 14Ω On CloseTrouble Diagnosis Faulty Start F/R lights OFF , F-PCB Power OFF※ How to replace Front PCB 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 Light cover Disconnection / breaking of Freezer Lights Wires StartSwitch to pull forward Cover and pull forwardRefrigerator Compartment Change the light Disconnection / Breaking of Refrigerator Lights Wires StartRemove screws of light cover Hold the bottom Cover and pull BulbsDoor is open too long ? Sensor is OK ? Removing of Check Valve +screw driverOperation Noise of Refrigerator Page Troubleshooting of Evaporator Sound Attach a absorber on point ③ accumulatorFan Noise Start Fan is damaged Or transformed ? Troubleshooting of Fan Noise Pipe Noise Start Door Contents Tools Cooling Cycle Heavy RepairUse special parts and tools for R-134a or R-600a Precautions During Heavy RepairBe sure to replace drier when repairing pipes Drier part with a nipper and then cut low pressure sidePractical Work for Heavy Repair Remove residual refrigerant more than 5 minutes later afterAn evacuated bombe To the low pressure sideClose valve ① Be sure to chargeTake a leakage test on the welded or suspicious area with an Electronic leakage testerBrazing Reference Drawings HighLow Compressor Suction PipeDimensions including Door Handles Installation GuideInstallation Preparation Width*Depth*Height 903mm X 734.5mm X 1790mmIf the refrigerator can not enter the door ※Remove front bottom cover first, if it is attachedReplacing Freezer Door Refrigerator Leveling & Door Adjustment Case freezer door is lower Than refrigerator doorJoin connector to water tap Get ready to install water line Leave a sufficient distance when cutting the tubesConnect water tube Remove any substance from filterAttach the filter box 2Insert the fastening ring into the Water tubeDispenser Water Flow Cabinet Machine Room / Eva Part Refrigerator Room Freezer Room Freezer Door Refrigerator Door Reference