Daewoo FRU-5711-FRS-U20DA Series Service Manual
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Daewoo FRU-5711-FRS-U20DA Series Service Manual

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S/M No: FRSU20IA03
Refrigerator
4 Caution
: In this Manual, some parts can be changed for improving, their
performance without notice in the parts list. So, if you need the
latest parts information,please refer to PPL(Parts Price List) in
Service Information Center
July . 2005

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Summary of Contents for Daewoo FRU-5711-FRS-U20DA Series

  • Page 1 S/M No: FRSU20IA03 Refrigerator 4 Caution : In this Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information,please refer to PPL(Parts Price List) in Service Information Center July .

  • Page 2: Table Of Contents

    C O N T E N T S 1. WARNINGS AND PRECAUTIONS FOR SAFETY -------------------------------------------- 2. EXTERNAN VIEW 2-1. External Size ----------------------------------------------------------------------------------------- 2-2. Name of Each Parts --------------------------------------------------------------------------------- 3. SPECIFICATION --------------------------------------------------------------------------------------- 4. OPERATION AND FUNCTIONS ------------------------------------------------------------------- 5. CIRCUIT OPERATION 5-1. Power Circuit Diagram ----------------------------------------------------------------------------- 5-2.

  • Page 3: Warnings And Precautions For Safety

    1. WARNINGS AND PRECAUTIONS FOR SAFETY Please observe the following safety precautions in order to use safely and correctly the refrigerator and to prevent accident and danger during repair. 1. Be care of an electric shock. Disconnect power cord from wall outlet and wait for more than three minutes before replacing PCB parts.

  • Page 4: Externan View

    2. EXTERNAL VIEWS 2-1. External Size ■ FRS(N)-U20IA...
  • Page 5 ■ FRS(N)-U20DA / FRS(N) U20EA...
  • Page 6 ■ FRS(N)-U20FA / FRS(N)-U20GA...

  • Page 7: Name Of Each Parts

    2-2. Name of Each Parts ■ FRS(N)-U20IA Freezer Compartment Refrigerator Compartment 1. Freezer light 6. Dairy pocket 2. Freezer pocket 7. Refrigerator light 3. Ice tray 8. Chilled case 4. Freezer shelf 9. Refrigerator shelf 5. Freezer case 10. Movable Egg case 11.
  • Page 8 ■ FRS(N)-U20DA Freezer Compartment Refrigerator Compartment 1. Ice cubes storage case 7. Dairy pocket 2. Freezer light 8. Refrigerator light 3. Water/Ice dispenser 9. Refrigerator shelf 4. Freezer shelf 10. Movable egg case 5. Freezer pocket 11. Refrigerator pocket 6. Freezer case 12.
  • Page 9 ■ FRS(N)-U20EA Freezer Compartment Refrigerator Compartment 1. Ice cubes storage case 7. Dairy pocket 2. Freezer light 8. Refrigerator light 3. Water/Ice dispenser 9. Shelf wine (option) 4. Freezer shelf 10. Refrigerator shelf 5. Freezer pocket 11. Movable egg case 6.
  • Page 10 ■ FRS(N)-U20FA Freezer Compartment Refrigerator Compartment 1. Ice cubes storage case 7. Dairy pocket 2. Freezer light 8. Refrigerator light 3. Water/Ice dispenser 9. Refrigerator shelf 4. Freezer shelf 10. Homebar pocket 5. Freezer pocket 11. Movable egg case 6. Freezer case 12.
  • Page 11 ■ FRS(N)-U20GA Freezer Compartment Refrigerator Compartment 1. Ice cubes storage case 7. Dairy pocket 2. Freezer light 8. Refrigerator light 3. Water/Ice dispenser 9. Shelf wine (option) 4. Freezer shelf 10. Refrigerator shelf 5. Freezer pocket 11. Homebar pocket 6. Freezer case 12.

  • Page 12: Specification

    3. SPECIFICATION 3-1. Specification Item Specification FRS(N)- FRS(N)- FRS(N)- FRS(N)- FRS(N)- Model Name U20IA U20DA U20EA U20FA U20GA Total 570 Li 541 Li 525 Li 541Li 536 Li ISO Gross Volume Freezer 209 Li 184 Li 178 Li 184 Li 184 Li (Li) Refrigerator...
  • Page 13 Item Specification FRS(N)- FRS(N)- FRS(N)- FRS(N)- FRS(N)- Model Name U20IA U20DA U20EA U20FA U20GA D-Sensor PBN-43 F-Sensor PBN-38 R-Sensor PBN-43 Defrost Heater AC220V / 192W Main Duct Heater AC220V / 7W Louver Heater AC220V / 8W Dispenser Heater AC220V / 5W Water Pipe Heater AC220V / 5W Homebar Heater...

  • Page 14: Operation And Functions

    4. OPERATION AND FUNCTIONS 4-1. Display 4-1-1. FRS(N)-U20IA INPUT CONTROL OBJECT FRZ.TEMP, REF.TEMP Inner Control (Lamp-LED) CONTENTS REMARKS Temperature adjustment button for freezer compartment. Temperature adjustment button for refrigerator compartment. 1. “FRZ.TEMP” Button 1) Temperature control of Freezer compartment 2) 5 step mode of successive temperature mode. 3) Initial mode by power input : “3”...
  • Page 15 4-1-2. FRS(N)-U20DA / EA / FA / GA INPUT CONTROL OBJECT Front PCB button FREEZER SET, REFRIGERATOR SET SUPER FREEZER, SUPER REFRIGERATOR FCP C-LED RESET FILTER, WATER / ICE, ICE MAKER LOCK ,LOCK REMARKS CONTENTS Water filter reset Dispenser select button Ice maker lock button Lock button Super freezer...
  • Page 16 CONTENTS REMARKS 4. “REFRIGERATOR SET” button. 1) Temperature control of Refrigerator compartment 2) 5 step mode of successive temperature mode. 3) Initial mode by power input : “Medium (4℃)” ※Whenever pressing button, setting is repeated in the order of Medium (4℃) → Medium Max (3℃) → Max (2℃) → Min (6℃) → Medium Min (5℃). Letters are indicated on 88 Display LED Medium Medium...
  • Page 17 4-2. Defrost Mode INPUT CONTROL OBJECT 1. Comp 2. F-Fan 1. Defrosting Cycle 3. R-Fan 4. D-Heater CONTENTS REMARKS 1. Defrost Mode Pre-Cool Pre-Cool 1) Time : 50 minutes 2) Comp , F-fan : ON R-fan : Control D-HTR : OFF 3) If F-sensor ≤...
  • Page 18 CONTENTS REMARKS 4. Flow Chart of Defrosting Start Start Comp. operating time is over 2 hours? Total time is over 60 hours? Comp. operating time is over 24 hours? Comp. operating time is over 6 hours? Comp. operating rate is more 85%? Any error ? Total door open time is over 2 min?
  • Page 19 4-3. c (Forced Defrosting) Mode INPUT CONTROL OBJECT 1. Comp 2. F-Fan 1. Defrosting Cycle 3. R-Fan 4. D-Heater CONTENTS REMARKS 1. A/S Defrosting Mode (Heater defrost → Pause → Fan Delay) Heater Heater Defrosting Defrosting 1) Comp, F-fan, R-fan : OFF D-HTR : ON 2) Time limit 30 seconds : Heater is ON regardless of D-sensor...
  • Page 20 4-5. Louver Heater Control INPUT CONTROL OBJECT Louver Heater 1. Comp CONTENTS REMARKS It is linked with comp. 4-6. Buzzer or Alarm Control INPUT CONTROL OBJECT 1. Control (Inner or F-PCB) buttons Buzzer 2. Door Switch 3. Initial Power Input CONTENTS REMARKS 1.
  • Page 21 4-8. Demonstration 4-8-1. FRS(N)-U20IA INPUT CONTROL OBJECT Comp 1. FRZ. TEMP F/R-Fan 2. Door Switch Heater CONTENTS REMARKS 1. Start Open and close “Freezer door switch” 5 times while pushing “FRZ. TEMP” button simultaneously. 2. Control 1) All other electrical components are OFF except for F-fan / R-fan 2) Fan Control Door open →...
  • Page 22 4-9. Compensation of R-sensor ON/OFF Point INPUT CONTROL OBJECT Resistance of R-sensor Mid ON/OFF Point Main PCB REMARKS CONTENTS Compensation of R-sensor ON/OFF temp. (down) In case temperature of refrigerator compartment is weak or insufficient, take the following action. FRS(N)-U20IA FRS(N)-U20DA/EA/FA/GA ※...
  • Page 23 4-10. Error Display 4-10-1. FRS(N)-U20IA (LED Display of Inner Control) INPUT CONTROL OBJECT Temperature Control Buttons Lamp LED of Inner control CONTENTS REMARKS 1. How to start 1) Press “FRZ.TEMP” button 5 times while pressing “REF.TEMP” button at the same time. 2.
  • Page 24 CONTENTS REMARKS 5. Control way of Errors (if any) 1) “F-sensor” error Cause : F-sensor open or short Control : Condition of ambient temperature How to reset : If F-sensor is normal, the error is terminal temperature. RT-S ~ 9℃ ~ 15℃...
  • Page 25 4-10-2. FRS(N)-U20DA/EA/FA/GA (CLED Display of Front PCB) INPUT CONTROL OBJECT Temperature Control Buttons 88 Display CLED REMARKS CONTENTS 1. How to start 1) Under “LOCK” mode, press “SUPER FREEZER” button 5 times while pressing “FREEZER SET” button at the same time. 2) The front CLED displays as the right diagram shows ( [Ex.] Time Display of 0003 signifies 3 minutes of power on time.) 3) Press “FREEZER SET”...
  • Page 26 CONTENTS REMARKS 5. Control way of Error (if any) 1) “F1” error Cause : F-sensor disconnection or short Check point : Measure the resistance between both terminals after separating CN8 (or CN15) of the Main PCB. (Refer to the 5-2.) If F-sensor is disconnected or shorted , change the F-sensor in the freezer compartment.
  • Page 27 CONTENTS REMARKS 9) “EI”ERROR Cause : I-SENSOR disconnection / short Check point : Measure the resistance between both terminals after separating CN11 of the Main PCB. (Refer to the 5-2.) If F-sensor is disconnected or shorted , change the I-sensor in the automatic ice maker. 10) “EF”...
  • Page 28 4-11. Summary of Function 4-11-1. FRS(N)-U20IA (Inner Control) INPUT CONTROL OBJECT Resistance of R-sensor Mid ON/OFF Point Each button REMARKS CONTENTS Element A/S Function Forced Defrosting “FRZ.TEMP” + “REF.TEMP” 5 times Pull Down “REF.TEMP”+ “FRZ.DOOR” OPEN/CLOSE 5 times Demo function “FRZ.TEMP”+ “FRZ.DOOR”...
  • Page 29 4-12. Back up Function (FRS(N)-U20DA/EA/FA/GA) INPUT CONTROL OBJECT None 1. F-FAN, R-FAN, C-FAN CONTENTS REMARKS 1. Filter Exchange Information : Record as a real-time from the point of power input 2. P Factor (Information about Ice Maker) 4-13. Automatic Icemaker ( FRS(N)-U20DA/EA/FA/GA) INPUT CONTROL OBJECT Full ice sensing switch...
  • Page 30 CONTENTS REMARKS 2) With the initial power input, Ice tray turns to be horizontal and ice making mode starts. 3) Control of water hose heater * Heater is always ON if RT-sensor has an error or RT is below 15 degree. * Heater is always ON for 60 minutes (max.
  • Page 31 CONTENTS REMARKS 3. Ice separating (drop) mode status of ice tray Ice separation start Horizontal position level SW MAX1.1sec 8.5~12.2sec 0.2sec 8~11sec normal level SW motor STOP revolution 10 sec 11 sec 1.1 sec level SW error 1) Time of each zone used to verify level switch error 2) The rotation of motor is sensed at each zone 3) In case of level switch error, ice separation is done by time.
  • Page 32 CONTENTS REMARKS Water supply valve is open when water supply mode starts after separation of ices. 2) Water is supplied by time in case sensor has error. 3) Factor valve is variable which can be useful in AS action ① Water flow pulse is set to 238 if flow sensor is in normal condition. (If water is supplied by time, maximum water supply time 165 seconds) ②...
  • Page 33 4-15. Temperature control of “Magic Cool Zone” compartment ( FRS(N)-U20EA/GA) INPUT CONTROL OBJECT 1. R-Fan 1. “Magic Cool Zone” damper 2. “Magic Cool Zone” sensor 2. Damper heater 3. “SELECT” button CONTENTS REMARKS 1. “Select” button 1) Temperature control of “Magic Cool Zone” compartment 2) 4 step mode of successive temperature mode.
  • Page 34 CONTENTS REMARKS 4) Control Flow & Timing Chart ① Crushed Ice D.P SW D.P SW D.P SW D.P SW D.P Lamp D.P Lamp D.P Lamp D.P Lamp D.P S/V D.P S/V D.P S/V D.P S/V (Flap) (Flap) (Flap) (Flap) Gear Motor Gear Motor Gear Motor Gear Motor...

  • Page 35: Circuit Operation

    5. CIRCUIT OPERATION 5-1. Power Circuit Diagram ■ FRS(N)-U20IA ■ FRS(N)-U20DA/EA/FA/GA ※ Voltage of every part Parts Voltage 230Vdc 310Vac 12Vdc 14.5Vdc 5Vdc ※ Caution : Since high voltage (DC310V) is maintained at the power terminal, please take a measure after more than 3minutes have passed after removing power cords in the abnormal operation of a circuit.

  • Page 36: Function Of Each Sensor

    5-2. Function of Each Sensor ■ FRS(N)-U20IA REMARKS CONTENTS Compensation of R-sensor ON/OFF temp. (MICOM) [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.
  • Page 37 FRS(N)-U20DA/EA/FA/GA ■ CONTENTS REMARKS Compensation of R-sensor ON/OFF temp. (MICOM) [F-sensor (A)] 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℃...

  • Page 38: Relay Function

    5-3. Relay Function ■. FRS(N)-U20IA CONTENTS REMARKS 1. Circuit Diagram (MICOM) Comp Comp R-Lamp Louver Heater F-Lamp D-Heater Louver Heater D-Heater 2. How it works; ON Condition OFF Condition Control Mode Control IC ULN2004 IC ULN2004 Method MICOM Port MICOM Port Output pin Output pin Comp...
  • Page 39 ■ FRS(N)-U20DA/EA/FA/GA CONTENTS REMARKS 1. Circuit Diagram (MICOM) Comp R-Lamp Louver Heater F-Lamp D-Heater 2. How it works; ON Condition OFF Condition Control Mode Control IC ULN2004 IC ULN2004 Method MICOM Port MICOM Port Output pin Output pin Comp Relay 1 #1≒5.0V #10≒0.7V #1≒0V...

  • Page 40: Fan Function

    5-4. Fan Function 1. Circuit Diagram ■ FRS(N)-U20IA ■ FRS(N)-U20DA/EA/FA/GA 2. Explanation for the operation * TA7291P is the drive IC for the only DC motor, and used for control of the fan motor * One input and output is used for the control of the fan motor Input Output Motor IC No.5 Pin...

  • Page 41: Diagram

    6. DIAGRAM 6-1. Wiring Diagram ■ FRS(N)-U20IA...
  • Page 42 ■ FRS(N)-U20DA / EA / FA / GA...

  • Page 43: Circuit Diagram Of Main Pcb

    6-2. Circuit Diagram of Main PCB ■ FRS(N)-U20IA...
  • Page 45 ■ FRS(N)-U20DA / EA / FA / GA...

  • Page 47: Component Locate View

    7. COMPONENT LOCATE WIEW 7-1. Front View Home bar Door Front PCB (Option) Dispense Button 7-2. Inner View Automatic F-Fan Geared R-Fan Inner Ice Maker Motor Motor R-Sensor R-Lamp R-Sensor Motor Controller F-Door F-Lamp F-Sensor R-Door R-Door Switch Switch Switch Refrigerator Refrigerator Freezer Compartment...
  • Page 48 7-3. Evaporator Water Pipe D-Sensor Temp Fuse Evaporato Defrost Heater 7-4. Machine Compartment Power cord Condenser Compressor Running Dryer Condenser Tray Drip Water Capacitor & PTC Fan-Motor Valve...

  • Page 49: How To Check Each Parts

    8. HOW TO CHECK EACH PARTS 8-1. Hose Ice Maker Tube Assembly 1) Disassembling Procedure DISASSEMBLING PROCEDURE DISASSEMBLING PROCEDURE ▷Remove 2 screws at the Cove ▷Pull forward Ice Storage Case Guide Cab W/Tube A. ▷Remove 2 screws. ▷Disassemble Cover Guide Cab W/Tube A ▷Pull forward Ice Maker.

  • Page 50: Bracket Geared Motor

    8-2. Bracket Geared Motor Assembly 1) Disassembling Procedure DISASSEMBLING PROCEDURE DISASSEMBLING PROCEDURE ▷Remove 2 screws. ▷Pull forward Bracket Geared Motor. Unscrew (red 4 screws). ▷Unscrew (4 points). Unscrew (blue 4 screws). ▷Separate 6 pin housing of Bracket ▷Check Solenoid Valve and Geared Motor. Geared Motor from the top connector.

  • Page 51: Dispenser Micro Switch

    8-3. Dispenser Micro Switch 1) Disassembling Procedure DISASSEMBLING PROCEDURE DISASSEMBLING PROCEDURE ▷ Insert (-) screw driver into bottom hole of Dispenser Button Guide. ▷Separate wire connectors Pull up forward to remove the guide. from Micro Switch. (Be careful not to damage guide surface.) ▷Check Micro Switch.

  • Page 52: Dispenser Solenoid Valve

    8-4. Dispenser Solenoid Valve 1) Disassembling Procedure DISASSEMBLING PROCEDURE DISASSEMBLING PROCEDURE ▷ Insert (-) screw driver into bottom left groove of Cover Dispenser Box. Pull forward with a snap.(Be careful not to damage cover and ▷Separate 2 terminals from Sol Valve and door surface.) 2P Housings from Cover Ice Flap.

  • Page 53: Main Pcb

    8-5. Main PCB ■ FRS(N)-U20IA ITEM CHECK POINT REMARK Compensation of * Used when making R-temp. down Weak Refrigeration to compensate for weak refrigeration →Making R-temp without changing FCP temp. setting. ▷Cutting of J1 ; down by 1.5℃ cooler ▷Cutting of J1, J2 ; down by 3℃ Relay Power * To check normal voltage of each electrical devices Controller...
  • Page 54 ■ FRS(N)-U20DA/EA/FA/GA ITEM CHECK POINT REMARK Compensation of * Used when making R-temp. down J18,19 Weak Refrigeration to compensate for weak refrigeration →Making R-temp without changing FCP temp. setting. ▷Cutting of J18 ; down by 1.5 ℃ cooler ▷Cutting of J18, J19 ; down by 3℃ Relay Power * To check normal voltage of each electrical devices Controller...

  • Page 55: Ice Maker

    8-6. Ice Maker 1) Disassembling Procedure DISASSEMBLING PROCEDURE DISASSEMBLING PROCEDURE ▷ Remove 2 screws on top front of ice maker. ▷Remove full ice sensing switch and level switch. ▷ Pull forward ice maker. ▷Unscrew (3 points) Plate Gear Fixture. ▷ Check if ice dropping motor is normal (OK). ▷Unscrew Fixture of Frame Ice Maker.
  • Page 56 2) How to Check Ice Maker PARTS HOW TO CHECK CRITERION ▷ GOOD : RS-360RH-14250 Ice Dropping Motor : 6 ~ 14Ω ▷ DEFECTIVE : Change the motor. ▷ Check resistance value of 2 wires with a Multi Tester. ▷ GOOD : 4.4 ~ 50kΩ I-Sensor (Ice Sensor) (It depends on surround temp.)

  • Page 57: Trouble Diagnosis

    9. TROUBLE DIAGNOSIS 9-1. Faulty Start (F/R lights OFF , F-PCB Power OFF) Start Power cord or Fuse is disconnected ? Change the Main Fuse (AC250V 15A) (In the left side of machine compartment) 1’st power of SMPS is on? Check power Cord connection from machine compartment and to CN1 of M-PCB.

  • Page 58: Freezer Compartment

    9-2. Freezer Compartment 9-2-1. Freezing failure . (Foods are not frozen / cold.) Start Any Error code on F-PCB? Refer to error display in operation and function ※ ※ ※ ※ Refer to the 4-10. (Error Display) Does Comp. work? OLP/PTC is OK? Change the...
  • Page 59 Removing and replacing Freezer parts 1) Remove foods. 2) Remove Ice Bucket, shelves and cases in Freezer compartment. * Remove 2 screws * Remove 4 screws of Ice Maker. of Geared Motor. * Remove the Housing * Remove the Housing of Ice Maker AS.
  • Page 60 Removing and replacing Freezer parts (12) * Remove the screw cap on * Remove light cover screws. the F-Louver A with a flat tip driver. (13) * Pull down smoothly the * Remove 3 screws of bottom of light cover to F-Louver A.
  • Page 61 Removing and replacing Freezer parts D-Sensor Housing F-Louver B Heater Housing Temp. Fuse Housing 1st : F-Louver B Heater Housing 2nd : None. 3rd : Defrost Heater Housing. Temp. Fuse Defrost Heater D-Sensor Defrost Heater...
  • Page 62 9-2-2. Ice Formation on F-Louver Start Dews are formed on the Gasket has a gap Remove the gap. gasket surface inside F between cabinet ? compartment ? Door is hanged Reassemble the door. down ? Door is open and closed too frequently ? Explain not to open doors too frequently.
  • Page 63 9-2-3. Disconnection / breaking of Freezer Lights Wires Start Freezer light filament is disconnected or breaking ? Change the light bulb. Connection of F door switch is OK ? Repair the F-door switch. Check the F door switch connection and F-light socket. Change of F Lights Change of F Door Switch ①...

  • Page 64: Refrigerator Compartment

    9-3. Refrigerator Compartment 9-3-1. Refrigeration failure (Foods does not get cool or cold soon.) Start ※ ※ ※ ※ Refer to the 4-10. (Error Display) Any error mode on F-PCB? Solve error code problem, if any. Change R-Motor works OK ? R-Motor is OK ? the R-Motor.
  • Page 65 9-3-2. Disconnection / Breaking of Refrigerator Lights Wires Start Freezer light filament is disconnected or breaking ? Change the light bulb. Connection of R door switch is OK ? Repair the R-door switch. Check the R-door switch connection and R-light socket. Change of F Lights Change of F Door Switch ①...
  • Page 66 9-3-3. Dews on Refrigerator Compartment Start Dews are formed Gasket has on the gasket inside Repair to eliminate the gap. Any gap ? R-compartment? Door is Reassemble the doors. hanged down ? Door is open too long ? Explain not to open doors too long.
  • Page 67 9-3-4. Excessive Refrigeration of Vegetable Case Start Refrigerator temp. mode is “HIGH” ? Explain the temperature modes. Advise to set the temp. to “Middle” or “LOW” mode. R-check valve Works OK ? Repair and/or Change the R-check valve. ※ Refer to “Repair /Change of Check Valve”.
  • Page 68 Removing of Check Valve ① ① ① ① ⑤ ⑤ ⑤ ⑤ * Hold the bottom and right of damper to pull * Remove screws down to remove. of light cover. ② ② ② ② ⑥ ⑥ ⑥ ⑥ * Hold the bottom of cover and pull * Lift up a piece of Check Valve forward to remove.

  • Page 69: Operation Noise Of Refrigerator

    9-4. Operation Noise of Refrigerator 9-4-1. Comp. operation Noise Start Refrigerator is leveled ? Level the refrigerator by adjusting wheels. ☞ Refer to User’s Guide and SVC Manual. Front cover or door gasket is assembled wrong ? Set it right. Rubber absorber comp is distorted or aged ? Change the Rubber absorber.
  • Page 70 9-4-2. Refrigerant Flow Sound Start Water flowing or hiss sounds from the refrigerator ? Attach an absorber gum on the capillary tube. Refrigerant sound of hiss or sizzling sound when comp. starts ? Apply a gum on the accumulator. Refrigerant sound of hiss or sizzling when comp.
  • Page 71 Troubleshooting of Evaporator Sound 1. Hiss Sound from Capillary Tube “I” tube 1) “I” tube is used to connect the capillary tube and evaporator. (2 welding points : ①, ②) 2) When such a sound is made, attach a absorber on the tube including 2 welding points.
  • Page 72 9-4-3. Fan Noise Start Fan is damaged or transformed ? Change the fan. Fan is touching the surround ? Set it right not to touch. Fan-motor assembly is moving or shaking ? Set it right not to move. Motor has its own noise or vibration when working ? Change the motor assembly.
  • Page 73 Troubleshooting of Fan Noise 1. Fixing or Fastening of Fan Motor 1) Check if fan motor frame of the assembly is fastened tightly with screws to the liner wall. Unless it is tight, vibration of shaking can make. 2) Check if fan motor and fan are hanged down. Fan working sound can be louder if they are not set right.
  • Page 74 9-4-4. Pipe Noise Start Pipes are touching in the machine compartment ? Separate the touching pipes, if any. Tray drip makes noise by Condenser shaking ? Apply cushion material between Comp. base and Tray drip. Pipe itself is shaking much ? Move or change the points of vibration absorber rubbers on the pipes to reduce the shaking.

  • Page 75: Door

    9-5. Door 9-5-1. Door Opening Alarm Continues though the door is closed. Start Check if interior light is ON. Door switch is pushed well ? Attach a thin pad on the door liner or change the door assembly. Door switch is soaked with water or there is water in the switch ? Change the door switch.

  • Page 76: Cooling Cycle Heavy Repair

    10. COOLING CYCLE HEAVY REPAIR 10-1. Summary of Heavy Repair Process Contents Tools Remove * Cut charging pipe ends (Comp. & Dryer) and refrigerant * Nipper, side cutters discharge refrigerant from drier and compressor. Residuals * Confirm refrigerant (R-134a or R-600a) and oil for compressor and drier.

  • Page 77: Precaution During Heavy Repair

    10-2. Precautions During Heavy Repair Items Precautions Use of tools. 1) Use special parts and tools for R-134a or R-600a 1) Remove retained refrigerant more than 5 minutes after turning off a refrigerator. (If not, oil will leak inside.) Removal of retained 2) Remove retained refrigerant by cutting first high pressure side refrigerant.

  • Page 78: Practical Work For Heavy Repair

    10-3. Practical Work for Heavy Repair Items Precautions 1. Removal of residual refrigerant. 1) Remove residual refrigerant more than 5 minutes later after turning off the refrigerator. ( If not, compressor oil may leak inside.) 2) Remove retained refrigerant slowly by cutting first high pressure side (drier part) with a nipper and then cut low pressure side.
  • Page 79 Items Precautions * Pipe Connection Connect a red hose to the high pressure side and a blue hose 3.Vacuum degassing. to the low pressure side. * Vacuum Sequence Open ①,② valves and evacuate for 40 minutes. Close valve ①. Evaporator Compressor Hot Pipe Condenser...

  • Page 80: Standard Regulations For Heavy Repair

    Items Precautions 4.Refrigerant charging. 4) Refrigerant Charging Charge refrigerant while operating a compressor as shown above. 5) Pinch a charging pipe with a pinch-off plier after completion of charging. 6) Braze the end of a pinched charging pipe with copper brazer and take a gas leakage test on the welded parts.

  • Page 81: Brazing Reference Drawing

    10-5. Brazing Reference Drawings. Accumulator I-Pipe Hot Pipe Suction Pipe Evaporator Pipe Suc Conn Condenser Dryer Pipe Conn B Capi-Tube Compressor ▶ Welding Point ● Copper Welding (Ag 5%) 7 Points ■ Silver Welding (Ag 35%) 3 Points ▶ Flow of Refrigeration Cycle High...

  • Page 82: Installation Guide

    11. INSTALLATION GUIDE 11-1. Installation Preparation Check if the refrigerator can pass a doorway or enter a door first. Dimensions( including Door Handles) 903mm X 734.5mm X 1790mm (Width*Depth*Height) Find a suitable place to install ※Avoid direct sunlight. Sufficient space from refrigerator back to the ※wall for free air ventilation Once the installation place is ready follow the installation instructions.

  • Page 83: If The Refrigerator Can Not Enter The Door

    11-2. If the refrigerator can not enter the door ※Remove front bottom cover first, if it is attached. Removing Freezer Door Remove front bottom cover first, Unscrew top hinge cover with a Turn top hinge bolt Pull out the left collar of the screw driver.
  • Page 84 Replacing Freezer Door Insert the water tube into the hole Insert the bottom hole of freezer Let the top of door close to the Of the bottom hinge pin first, then door straight to the bottom hinge cabinet and insert the top hinge Insert the bottom of freezer door pin.

  • Page 85: Refrigerator Leveling & Door Adjustment

    11-3. Refrigerator Leveling & Door Adjustment ※Refrigerator must be level in order to maintain optimal performance and desirable front appearance. (If the floor beneath the refrigerator is uneven, freezer and refrigerator doors look unbalanced.) In case freezer door is lower In case refrigerator door is lower than refrigerator door than refrigerator door...

  • Page 86: Water Line Installation

    11-4. Water Line Installation How to install Water Line 1.The water pressure should be 3kgf/cm2 or more to run the automatic icemaker. ※Checkup your tap water pressure ; if a cup of 180cc is full within 10 seconds, the pressure is OK. 2.When installing the water tubes, ensure they are not close to Any hot surface.
  • Page 87 3. Remove any substance from filter 1) Open the main tap water valve and check if water comes out of the Water Tube. 2) Check if the Water Valve is open in case water does not come out. 3) Leave the valve open until clean water is coming out. ※Initial water may contain some substances out of filter (manufacturing process).

  • Page 88: Dispenser Water Flow

    11-5. Dispenser Water Flow...

  • Page 89: Exploded View & Parts List 12-1. Frs(N)-U20Ia

    Cabinet Q'ty PART-CODE PART NAME SPEC. 20IA 20DA 20EA 20FA 20GA ASSY CAB URT 3012924400 HINGE *T *R AS PO T3.0+PAINT 3012924300 HINGE *T *L AS PO T3.0+PAINT 3011446200 COVER *T HI *R 3011446100 COVER *T HI *L 3010968400 CAP CAB COVER 30143D6061 FRU-571I (R-134a) 30143D6070...
  • Page 90 Machine Room / Eva Part Q'ty PART-CODE PART NAME SPEC. 20IA 20DA 20EA 20FA 20GA 3010340400 BASE COMP AS FRU-571I CORD POWER AS CAPACITOR RUN Model dependent COMP Model dependent 3016002500 SPECIAL WASHER SK-5, T0.8 3010101600 RUBBER ABSORBER COMP NBR (R-134a) 3010101480 ABSORBER COMP AS FRU-541D (R-600a)
  • Page 91 Refrigerator Room Q'ty PART-CODE PART NAME SPEC. 20IA 20DA 20EA 20FA 20GA 3011492810 COVER DAMP AS FRU-571I 60-1 3014235200 PANEL CONTL *I AS 3012214100 FRAME CHECK VALVE AS FRU-571I 3012024200 FIXTURE MOTR AS 62-1 3015916000 MOTOR R FAN D4612AAA20 3011495100 COVER DAMP AS FRU-541D 63-1...
  • Page 92 Freezer Room Q'ty PART-CODE PART NAME SPEC. 20IA 20DA 20EA 20FA 20GA 30125145 GUIDE CASE A *L AS HIPS 30125146 GUDIE CASE A *R AS HIPS 30125297 GUIDE CASE C *L AS HIPS 30125298 GUIDE CASE C *R AS HIPS 3012529000 GUIDE DRN 3011186300...
  • Page 93 Freezer Door Q'ty PART-CODE PART NAME SPEC. 20IA 20DA 20EA 20FA 20GA 3019026700 POCKET F *T HIPS 3019026600 POCKET F HIPS 3000060410 FRU-541D ASSY F DR 3000060400 FRU-571I 136-1 3010964601 CAP ICE PATH FRAME PP(FRS-551F) 136-2 3012318810 GASKET F DR AS PVC+MAGNET 136-3 3017903702...
  • Page 94 Refrigerator Door Q'ty PART-CODE PART NAME SPEC. 20IA 20DA 20EA 20FA 20GA 3012641500 HANDLE AS FRU-571I 3016002700 SPECIAL SCREW WASR+TRS5X16MFZN 3010339500 BASE HANDLE *T HIPS 7112401211 SCREW TAPPING T1 TRS 4*12 MFZN 3011446400 COVER HNDLDECO *T ABS+SPRAY 3010339600 BASE HANDLE *U HIPS 3011446500 COVER HNDLDECO *U...
  • Page 95 Reference 1. Electric Device Compressor Capacitor Run Switch P Relay AS Remark Specification Part Code Specification Part Code Specification Part Code 220~240V/50Hz HPL30YG-5 395S130R50 400VAC/ 5 3016401920 308NHB, S330 3018129810 ㎌ MK183Q-L2U 3956183D50 350VAC/ 5 3016401170 265RHB, S330 3018129600 220~240V/50Hz ㎌...
  • Page 96 DAE WOO E LE C TR ONIC S C OR P . 686, AHY E ON-DONG , MAP O-G U, S E OUL, K OR E A. C .P .O. B OX 8003 S E OUL K OR E A P R INTE D DATE : JULY 2005...

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