Kenmore 795.74092.41 Series Service Manual
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Kenmore 795.74092.41 Series Service Manual

Kenmore 795.74092.41 Series Service Manual

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REFRIGERATOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/No. MFL68488611
Model #s:
795.74092.41*
795.74093.41*
795.74099.41*

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Summary of Contents for Kenmore 795.74092.41 Series

  • Page 1 REFRIGERATOR SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. Model #s: 795.74092.41* 795.74093.41* 795.74099.41* P/No. MFL68488611...

  • Page 2: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS ............................... 2 1. SPECIFICATIONS ................................3-4 2. PARTS IDENTIFICATION ..............................5 3. DISASSEMBLY ................................6-21 REMOVING AND REPLACING REFRIGERATOR DOORS ..................... 6 SUB PCB .....................................7 DOOR ....................................8 DOOR ALIGNMENT ................................9 FAN AND FAN MOTOR ..............................9 DEFROST CONTROL ASSEMBLY ..........................10 REFRIGERAOTR LIGHT ..............................11 MULTI DUCT ...................................

  • Page 3: Specifications

    1. SPECIFICATIONS 1-1 DISCONNECT POWER CORD BEFORE 1-7 REPLACEMENT PARTS SERVICING IMPORTANT - RECONNECT ALL GROUNDING DEVICES 31.7cu,ft 795.74092.41* All parts of this appliance capable of conducting electrical 795.74093.41* current are grounded. If grounding wires, screws, straps, 795.74099.41* clips, nuts or washers used to complete a path to ground Overload Protector ........
  • Page 4 Description 795.7409* Depth w/ Handles 37 1/8 in Depth w/o Handles 34 5/8 in Depth w/o Door 30 3/8 in Depth (Total with Door Open) 49 in Height to Top of Case 68 7/8 in Height to Top of Door Hinge 70 1/4 in Width 35 3/4 in...

  • Page 5: Parts Identification

    Durabase Fixed Door Bins Durabase Divider Refrigerator Shelves Water Tank Cover Refrigerator Light (side) Articulating Mullion Ice Compartment (Icemaker and Ice Bin) Air Filter Kenmore Connect Speaker Humidity Controlled Crisper Convenience Bin Air Tight Crisper Control Panel - 5 -...

  • Page 6: Disassembly

    3. DISASSEMBLY 3-1 REMOVING AND REPLACING REFRIGERATOR DOORS To remove the left refrigerator door: To remove the Right refrigerator door: Pull the water tube out of the fitting while pressing the release ring on the fitting. When you pull out the tube, first you have to push the collet by opposite direction of arrow in the upper picture and tube pull out by direction of arrow.

  • Page 7: Sub Pcb

    - 7 -...

  • Page 8: Door

    3-3 DOOR Door Gasket Replacement 1. Insert gasket into channel Mullion Removal Insert and press gasket into channels at doorliner. 1. Remove 2 screws. 2. Lift mullion up carefully. Mullion Replacement 1. Connect wire harness. 3. Disconnect wire harness. 2. Insert mullion into channel. Insert the mullion into channel at door as shown below.

  • Page 9: Door Alignment

    3-4 Door Alignment * Ice Fan Assembly Replacement If the level of refrigerator doors is uneven, follow the 1) Remove the plastic guide for slides on left side by instructions below to align the doors: unscrewing phillips head screws. Turn the leveling legs (CCW) to raise or (CW) to lower the 2) Pull out the cover sensor to disassemble by using tools height of the front of the refrigerator by using flat blade shown in the figure.

  • Page 10: Defrost Control Assembly

    3-6 DEFROST CONTROL ASSEMBLY Fan Motor 3-5-1 DEFROST CONTROL ASSEMBLY(Freezer Room) Defrost Control assembly consists of Defrost Sensor and Shroud Refrigerator FUSE-M. The Defrost Sensor works to defrost automatically. It is attached to the metal side of the Evaporator and senses its temperature.

  • Page 11: Refrigeraotr Light

    3-7 Refrigerator Light (Top) 3-7-2 Refrigerator Light (Side) Unplug Refrigerator, or disconnect power at the circuit 1. Unplug refrigerator power cord from electric outlet. breaker. 2. Put flat screwdriver into sevice hole and remove cover of If necessary, remove top shelf or shelves. refrigerator light.

  • Page 12: Multi Duct

    3-7-3 Cap Duct LED LAMP(Bottom) 3-8 MULTI DUCT 1. Unplug refrigerator power cord from electric outlet. 1. Remove 2 screws and guide rail. 2. Open the refrigerator door to need diassembly. 3. Put flat screwdriver into service hole, remove the cover of cap duct LED LAMP.

  • Page 13: Air Filter

    3-9 Air Filter 3) Disconnect wire harness and replace the main PCB in the reverse order of removal. 1) Remove filter cover to turn counterclockwise about 30 degree. 3-11 DISPENSER COVER DISASSEMBLY Hold the bottom of the dispenser and pull out from the door foam.

  • Page 14: Display Pcb Replacement

    3-12 DISPLAY PCB REPLACEMENT 3-15 CAP DUCT REPLACEMENT 1) Remove the dispenser cover and replace PCB with 1) Remove the dispenser cover. dispenser cover. 2) Remove the 2 screws. 3) Remove the funnel. 4) Remove the 2 screws. 5) Replace in reverse order. 2) Follow the steps in the pictures.

  • Page 15: Ice Corner Door Replacement

    4) Assemble 3 screws. 2) Grasp the bottom of motor cover assembly and pull it out slowly to remove. 5) Connect the Housing. 3) Disconnect wire harness from wall of compartment. 3-17 ICE CORNER DOOR REPLACEMENT 1) Remove the front screw as shown in the picture. 2) Lift up the hinge with one hand.

  • Page 16: How To Remove A Ice Bin

    3-19 HOW TO REMOVE ICE BIN 3-20 HOW TO PLACE ICE BIN IN POSITION 1) Grip the handles, as shown in the picture. 1) Insert the Ice Bin, slightly tilting it to avoid touching the Icemaker. (Especially, Ice-Detecting Sensor) Auto shuto (feeler arm) Note) Before remove ice bin, put on clean golves for 2) Lift the lower part slightly.

  • Page 17: Pull Out Drawer

    3-21 PULL OUT DRAWER Top Drawer 1. Use a flat blade screwdriver to push the tab in on the left rail and push the tab on the right rail in with your finger. Once the tabs have been pushed in, you can lift the tray up and out. 2.

  • Page 18: How To Remove And Reinstall The Pullout Drawer

    3-22 HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER 3-22-1 Follow Steps to Remove Step 1) Open the freezer door. Step 2) Remove the lower basket. Step 3) Remove the four screws from the guide rails (one Step 4) Removal of the freezer door is done by l ifting clear from each side) of the rail support.
  • Page 19 3-22-2 Follow Steps to Reinstall Step 1) Insert both side of supporter cover tv into Step 3) Assemble a bar and gear ice with screw. Push the otherside of the gear to inside of the connector rails, and then screw them. bar.

  • Page 20: Water Valve Disassembly Method

    3-23 WATER VALVE DISASSEMBLY METHOD 3-24 FAN AND FAN MOTOR DISASSEMBLY METHOD 1) Turn off the water. Then separate the water line from the 1) Using a short screwdriver, loosen one SCREW in DRAIN valve. PIPE ASSEMBLY and one connected to the MOTOR COVER.

  • Page 21: Caution : Sealed System Repair

    CAUTION : Sealed System Repair 3-25 Before making a sealed system repair : Start with the power cord unplugged from the outlet. Plug in the power cord and between 6 and 12 seconds after it has been pugged in, unplug it from the power source. this will allow both sides of the 3 way valve to be opened to allow for proper evacuation.

  • Page 22: Adjustment

    4. ADJUSTMENT 4-1 COMPRESSOR 4-2-3 Compressor protection logic Since linear Comp conducts linear reciprocating motion, 4-1-1 Role we have protection logic for compressor, motor and PCB The compressor intakes low temperature and low pressure gas from the evaporator of the refrigerator and compresses this gas to high-temperature and high-pressure gas.

  • Page 23: Circuit Diagram

    5. CIRCUIT DIAGRAM - 23 -...

  • Page 24: Troubleshootintg

    6. TROUBLESHOOTING - 24 -...
  • Page 25 - 25 -...

  • Page 26: Pcb Picture

    7. PCB Picture 7-1. Main PCB ( P/N : EBR78940606) ( P/ P P N / / : EBR78940606) CON7 CON201 CON6 CON3 CON2 CON1 CON5 7-2. Display PCB ( P/N : EBR787236, EBR789883, EBR787234, EBR789884, Top - Bottom) CON101 CON104 CON103 CON101...
  • Page 27 7-3. Sub PCB (P/N : EBR76468402) - 27 -...

  • Page 28: Troubleshooting

    8. Trouble Shooting 8-1. Freezer Sensor Error (E FS) Symptom Check Point 1. E FS 1. Check f or a loose connection 2. Check Sensor Resistance CON7 CON201 CON7 CON6 CON3 CON2 CON1 CON5 Resistance [Ω] Short CON7 Open pin ~ 18 Other Normal CON7...
  • Page 29 Freezer Sensor Error (E FS) Reconnect or Is the Connector disconnected Check the Sensor resistance. repair the or loose between Main PCB and Is resistance normal? connector sensor? CON7 Check the Temperature and resistance ref er to the table. No problem? CON7 Resistance [Ω] pin ~18...
  • Page 30 2. Refrigerator Sensor Error (E rS) Symptom Check Point 1. E rS 1. Check f or a loose connection 2. Check Sensor Resistance CON7 CON201 CON7 CON6 CON3 CON2 CON1 CON5 Resistance [Ω] Short CON7 Open pin ~ 16 Other Normal CON7 Resistance [Ω]...
  • Page 31 Refrigerator Sensor Error (E rS) Reconnect or Is the Connector disconnected Check the Sensor resistance. repair the or loose between Main PCB and Is resistance normal? connector sensor? CON7 Check the Temperature and resistance ref er to the table. No problem? CON7 Resistance [Ω] pin ~ 16...
  • Page 32 8-3. Icing Sensor Error (E IS) Symptom Check Point 1. E IS 1. Check f or a loose connection 2. Check Sensor Resistance CON7 CON201 CON5 CON6 CON3 CON2 CON1 CON5 Resistance [Ω] Short CON5 Open pin ~ 12 Other Normal CON5 Resistance [Ω]...
  • Page 33 Icing Sensor Error (E IS) Reconnect or Is the Connector disconnected Check the Sensor resistance. repair the or loose between Main PCB and Is resistance normal? connector sensor? CON5 Check the Temperature and resistance ref er to the table. No problem? CON5 Resistance [Ω] pin ~ 12...
  • Page 34 8-4. Defrost Sensor Error (F dS) Symptom Check Point 1. F dS 1. Check f or a loose connection 2. Check Sensor Resistance Defrost Controller CON7 CON201 CON6 CON7 CON3 CON2 CON1 CON5 Resistance [Ω] Short CON7 Open pin ~ 20 Other Normal CON7...
  • Page 35 Defrost Sensor Error (F dS) Reconnect or Is the Connector disconnected Check the Sensor resistance. repair the or loose between Main PCB, Is resistance normal? connector Def rost controller and Sensor? CON7 Check the Temperature and resistance ref er to the table. No problem? CON7 Resistance [Ω]...
  • Page 36 8-5. Defrost Sensor Error (r dS) Symptom Check Point 1. r dS 1. Check f or a loose connection 2. Check Sensor Resistance Defrost Controller CON7 CON201 CON7 CON6 CON3 CON2 CON1 CON5 Resistance [Ω] Short CON7 Open pin ~ 14 Other Normal CON7...
  • Page 37 Defrost Sensor Error (r dS) Reconnect or Is the Connector disconnected Check the Sensor resistance. repair the or loose between Main PCB, Is resistance normal? connector Def rost controller and Sensor? CON7 Check the Temperature and resistance ref er to the table. No problem? CON7 Resistance [Ω]...
  • Page 38 8-6. Defrost Heater Error (F dH) Symptom Check Point 1. F dH 1. Check the door gasket 2. Check Defrost Heater 3. Check the PCB output voltage CON7 CON201 CON3 CON6 CON3 CON2 CON1 CON5 Part Resistance [Ω] FUSE-M (1) 62~70 Def rost Heater (2) 144~167 Def rost Sensor...
  • Page 39 Defrost Heater Error (F dH) Replace Defrost Is the resistance value of defrost Sensor sensor as follow? Resistance is influenced by temperature. Replace the Check the Door gasket . Door gasket Is door gasket damaged? CON7 Resistance [Ω] pin ~ 20 23ºF / 5ºC 32ºF / 0ºC...
  • Page 40 8-7. Defrost Heater Error (r dH) Symptom Check Point 1. r dH 1. Check the door gasket 2. Check Defrost Heater 3. Check the PCB output voltage Defrost Controller CON7 CON201 CON3 CON6 CON3 CON2 CON1 CON5 Part Resistance [Ω] FUSE-M Def rost Heater 76~89...
  • Page 41 Defrost Heater Error (r dH) Replace Defrost Is the resistance value of defrost Sensor sensor as follow? Resistance is influenced by Replace the temperature. Check the Door gasket . Door gasket Is door gasket damaged? Is the Connector Properly Sensor Reconnect connected? CON7...
  • Page 42 8-8. Refrigerator Fan Error (E rF) Symptom Check Point 1. E rF 1. Check the air f low 2. Check the PCB Fan motor voltage Duct CON7 CON201 CON6 CON6 CON3 CON2 CON1 CON5 TEST MODE 1 Voltage [V] CON6 8~12V pin ~ 5 CON6...
  • Page 43 Refrigerator Fan Error (E rF) Reset the unit and Input Test1 Mode. Replace (Push the button 1 time) Check the Fan Motor voltage Main PCB Is Fan Motor voltage 8~12V? TEST MODE 1 Voltage [V] Go to 3 Open the f reezer door and Check CON6 8~12V the air f low.
  • Page 44 8-9. Freezer Fan Error (E FF) Symptom Check Point 1. E FF 1. Check the air f low 2. Check the Fan Motor 2. Check the PCB Fan motor voltage Fan Motor CON7 CON201 CON7 CON6 CON3 CON2 CON1 CON5 TEST MODE 1 Voltage [V] CON7...
  • Page 45 Freezer Fan Error (E FF) Reset the unit and Input Test1 Mode. Replace (Push the button 1 time) Check the Fan Motor voltage Main PCB Is Fan Motor voltage 8~12V? TEST MODE 1 Voltage [V] Go to 3 Open the f reezer door and Check CON7 8~12V the air f low.
  • Page 46 8-10. Icing Fan Error (E IF) Symptom Check Point 1. E IF 1. Check the air f low 2. Check the Connector 2. Check the PCB Fan motor voltage Air Flow Connector CON7 CON201 CON6 CON7 CON3 CON2 CON1 CON5 TEST MODE 1 Voltage [V] CON7...
  • Page 47 Freezer Fan Error (E IF) Reset the unit and Input Test1 Mode. Replace (Push the button 1 time) Check the Fan Motor voltage Main PCB Is Fan Motor voltage 8~12V? TEST MODE 1 Voltage [V] Go to 3 Open the f reezer door and Check CON7 8~12V the air f low.
  • Page 48 8-11. Condenser Fan Error (E CF) Symptom Check Point 1. E CF 1. Check the air f low 2. Check the Connector 2. Check the PCB Fan motor voltage Fan Motor CON7 CON201 CON6 CON7 CON3 CON2 CON1 CON5 TEST MODE 1 Voltage [V] CON7 8~12V...
  • Page 49 Condenser Fan Error (E CF) Reset the unit and Input Test1 Mode. Replace (Push the button 1 time) Check the Fan Motor voltage Main PCB Is Fan Motor voltage 8~12V? TEST MODE 1 Voltage [V] Go to 3 Check the f an rotating. CON7 8~12V Does f an rotate?
  • Page 50 8-12. Communication Error (E CO) Symptom Check Point 1. E CO 1. Check the loose connection 2. Check the Hinge connection CON7 CON201 CON6 CON3 CON2 CON1 CON5 CON101 CON5 Voltage [V] CON101 pin ~ 2 CON101 Not 0V, 5V pin ~ 3 CON101 Not 0V, 5V...
  • Page 51 Communication Error (E CO) Change the Main PCB Check the voltage. Is CON101 2 pin ~ 4 voltage 0V or 5V? Check the loose connection Voltage CON101 CON101 pin ~ 4 0V, 5V Check the Check the voltage. Hinge (loose Is CON101 1 pin ~ 2 connection)
  • Page 52 8-13. Cube mode doesn’t work Symptom Check Point 1. Cube mode 1. Check the loose connection doesn’t work 2. Check the resistance CON1 CON2 Ice Maker Geared Motor Dispenser Motor - 52 -...
  • Page 53 LEVER S/W Voltage [V] Resistance [Ω] Pushing 112~115V Geared Motor 31.1 ~ 42.1 CON2 pin ~ 9.9 ~ 12.1 Dispenser Motor 0~2V B(NEUTRAL) Pushing Pushing 9~12V CON1 pin ~ 0~2V Pushing - 53 -...
  • Page 54 Cube mode doesn't work Replace Geared Motor Check the resistance value. Is Geared Motor resistance 31.1 ~ 42.1Ω? Check the loose connection Geared Motor Change the Check the voltage. (while pushing the lever S/W) Is voltage correct? Resistance [Ω] Geared Motor 31.1 ~ 42.1 CON2 Replace...
  • Page 55 8-14. Crush mode doesn’t work Symptom Check Point 1. Crush mode 1. Check the loose connection doesn’t work 2. Check the resistance CON1 CON2 Ice Maker Geared Motor Dispenser Motor - 55 -...
  • Page 56 LEVER S/W Voltage [V] Resistance [Ω] Pushing 112~115V Geared Motor 31.1 ~ 42.1 CON2 pin ~ Dispenser Motor 9.9 ~ 12.1 0~2V B(NEUTRAL) Pushing Pushing 9~12V CON1 pin ~ 0~2V Pushing - 56 -...
  • Page 57 Crush mode doesn't work Replace Geared Motor Check the resistance value. Is Geared Motor resistance 31.1 ~ 42.1Ω? Check the loose connection Geared Motor Change the Check the voltage. (while pushing the lever S/W) Is voltage correct? Resistance [Ω] Geared Motor 31.1 ~ 42.1 CON2 Replace...
  • Page 58 8-15. Water mode doesn’t work Symptom Check Point 1. Water mode 1. Check the loose connection doesn’t work 2. Check the resistance valve CON2 Water Valve Pilot Valve CON2 LEVER S/W Voltage [V] Pushing 112~115V CON2 pin ~ 0~2V B(NEUTRAL) Pushing Pushing 112~115V...
  • Page 59 Water mode doesn't work Replace Check the loose connection Check the resistance value. P/ Valve Is Pilot Valve resistance 360~420Ω? Change the Check the voltage. (while pushing the lever S/W) Is voltage correct? Pilot Valve Resistance [Ω] Pilot Valve 360~420 CON2 LEVER S/W Voltage [V]...
  • Page 60 8-16. Refrigerator side lamp doesn’t work Symptom Check Point 1. Refrigerator side lamp 1. Check the door S/W resistance doesn’t work 2. Check the LED Lamp LED Lamp CON7 CON201 LED Lamp CON6 CON3 CON2 CON1 CON5 CON6 Door S/W Resistance [Ω] Normal Door S/W...
  • Page 61 Refrigerator side lamp doesn’t work Change the Change the Check the door S/W resistance. Door S/W LED Lamp Check the LED Lamp voltage Is it correct compared with table? Is voltage 12V? LED Lamp Door S/W Resistance [Ω] LED Lamp Normal Door S/W Push S/W...
  • Page 62 8-17. Refrigerator room lamp doesn’t work Symptom Check Point 1. Ref rigerator room 1. Check the door S/W resistance lamp doesn’t work 2. Check the LED Lamp CON7 CON201 LED Lamp CON6 CON3 CON2 CON1 CON5 CON6 LED Lamp Door S/W Resistance [Ω] Normal Door S/W...
  • Page 63 Refrigerator room lamp doesn’t work Change the Change the LED Lamp Check the LED Lamp voltage Check the door S/W resistance. Door S/W Is voltage 12V? Is it correct compared with table? LED Lamp Door S/W Resistance [Ω] Normal Door S/W Push S/W Infinity Change the...
  • Page 64 8-18. Freezer lamp doesn’t work Symptom Check Point 1. Freezer lamp doesn’t 1. Check the door S/W resistance work 2. Check the LED Lamp CON7 CON201 LED Lamp CON6 CON3 CON2 CON1 CON5 CON6 CON7 CON7 Resistance [Ω] pin ~ 14 23ºF / -5ºC 32ºF / 0ºC 41ºF / 5ºC...
  • Page 65 Freezer lamp doesn’t work Change the Change the Check the Ref rigerator door switch. Door S/W LED Lamp Check the LED Lamp voltage Does it f eel sticky? Is voltage 12V? LED Lamp Change the Check the door S/W resistance. Door S/W Is it correct compared with table? Change the...
  • Page 66 8-19. Poor cooling in Freezer compartment Symptom Check Point 1. Poor cooling in 1. Check the sensor resistance Freezer compartment 2. Check the air f low 3. Check the air Temperature 4.Check the Fan motor sticky 4. Check the Fan motor voltage CON7 CON201 Duct...
  • Page 67 Poor cooling in Freezer compartment Check the Compressor Check the air temperature. and sealed Is it cold? system Check the sensor resistance. Change the CON7 Resistance [Ω] Fan motor Check the Fan motor. pin ~ 20 Rotate f an using hand. -22ºF / -30ºC It f eel sticky? -13ºF / -25ºC...
  • Page 68 Replace Check the Fan Motor voltage Main PCB Is Fan Motor voltage 8~12V? TEST MODE 1 Voltage [V] CON7 8~12V pin ~ 12 Change the Check the Fan Motor voltage motor Is Fan Feed Back voltage 1~5V? TEST MODE 1 Voltage [V] CON7 Not 0V, 5V...

  • Page 69: Reference

    9. Reference 9-1 TEST MODE and Removing TPA 1. How to make TEST MODE If you push the test button on the Main PCB, the refrigerator will be enter the TEST MODE. * 1 time : Comp / Damper / All FAN on (All things displayed) * 2 times : Damper closed (22 22 displayed)
  • Page 70 9-2 TEMPERATRUE CHART - FREEZER AND ICING SENSOR TEMP RESISTANCE VOLTAGE -39°F (-40°C) 4.09 V 73.29 -30°F (-35°C) 3.84 V 53.63 -21°F (-30°C) 3.55 V 39.66 -13°F (-25°C) 3.23 V 29.62 -4°F (-20°C) 2.89 V 22.33 5°F (-15°C) 2.56 V 16.99 14°F (-10°C) 2.23 V...
  • Page 71 9-3 TEMPERATRUE CHART - REFRIGERATOR AND DEFROST SENSOR TEMP RESISTANCE VOLTAGE -39°F (-40°C) 4.48 V 225.1 -30°F (-35°C) 4.33 V 169.8 -21°F (-30°C) 4.16 V 129.3 -13°F (-25°C) 3.95 V 99.30 -4°F (-20°C) 76.96 3.734 V 5°F (-15°C) 3.487 V 60.13 14°F (-10°C) 47.34...
  • Page 72 9-4 How to check Fan-Error (1) After sending a signal to a fan, MICOM checks BLDC fan motor s lock status. If there is no feedback signal from BLDC fan, fan motor stops for 10 seconds and then operate for 15 seconds. To determine there is a fan motor malfunction, this process is repeated 3 times.

  • Page 73: Component Testing Information

    10. COMPONENT TESTING INFORMATION 10-1 Defrost Controller Assembly Function The controller assembly is made up of two different kinds of parts. The fuse and the sensor. To determine if these parts are defective, check for resistance. The fuse will cut power to the defrost heater at very high temperatures.
  • Page 74 10-2 Sheath Heater (Freezer Room) Function Sheath heater is the part for defrost. All heating wire is connected to only one line. So we can decide part is defective or not when we check the resistance. How to Measure (1) (2) Set a ohmmeter connect to The housing pins.
  • Page 75 10-3 Sheath Heater (Freezer Room) Function Sheath heater is the part for defrost. All heating wire is connected to only one line. So we can decide part is defective or not when we check the resistance. How to Measure Set a ohmmeter connect to The housing pins. Measure the pins connected to Sheath Heater.
  • Page 76 10-4 Sheath Heater (Refrigerator Room) Function Sheath heater is the part for defrost. All heating wire is connected to only one line. So we can decide part is defective or not when we check the resistance. How to Measure Set a ohmmeter connect to The housing pins. Measure the pins connected to Sheath Heater.
  • Page 77 10-5 Door Switch 10-5-1 Door Switch,R Check Voltage between pin 13 and 14 disconnection CON5 1.Check Reed S/W 2.Check Harness disconnection 3.If No.1,2 ok ,change PCB Check the Reed S/W resistance -.No Magnet Magnet Center Magnet Center Switch Center Switch Center Good position Bad position -.Magnet Near the Switch...
  • Page 78 Push Hook Push Hook Push second Push first - 78 -...
  • Page 79 10-5-2 Door Switch,F Check Voltage between pin 21 and 22 disconnection CON7 1.Check Reed S/W 2.Check Harness disconnection 3.If No.1,2 ok ,change PCB Check the Reed S/W resistance -.Magnet must be center of Switch -.No Magnet Magnet Center Magnet Center Switch Center Switch Center Good position...
  • Page 80 Push First push Second push - 80 -...
  • Page 81 10-6 Dispenser DC Motor Function - Dispenser DC Motor : When customer pushes the dispenser button, It pulls duct door of dispenser internal and ice dispense from ice bank. How to Measure Dispenser DC Motor Standard Dispenser DC Motor Test Points Result (1) to (2) 9.9 ~ 12.1...
  • Page 82 10-7 AC Motor ASSEMBLY Function The motor in the door pushed the ice into the dispenser. How to < In-door Motor > < In-door Motor > Measure Separate the Separate the housing. housing. Measure the Measure the resistance between resistance between (1) and (2) (1) and (3) Check the resistance between connectors (In-door motor 1, 2) and...
  • Page 83 10-8 Flow Sensor Function Flow Sensor (in machine room) measure the water quantity from city water to water filter in refrigerator How to Measure Flow Sensor (in machine room) Standard Test Points Result Red wire to Black wire 4 ~ 30 - 83 -...

  • Page 84: Compressor Troubleshooting

    11. Compressor Troubleshooting PCB Check (Simplify) Protection Logic TEST 1 Mode A-inverter Con201 Time>30sec Power Off Power On PCB OK Disconnect & V≒200 Replace Driver PCB Check Voltage about 200V past 30second after turn on Test Mode Comp Ref. Display & sound Refer FC90(A-Inverter) TEST1...
  • Page 85 11-1 Check A - There is PC Board located in the PCB case. The control driver is PC board for the compressor. - This step shows the source voltage of the driver PC board. Step1. Open PCB Cover Step2. Check Driver PCB LED Lamp * Driver PCB located in machine room.
  • Page 86 11-2 Check B B1. LED blinks once, then repeats (FCT0 Fault) Protection Logic Blink OFF Blink OFF - Purpose: Detecting motor current and voltage error - Check voltage at point A (Motor Voltage), point B (Motor Current) and Point C (Capacitor Voltage) when compressor is off.
  • Page 87 B3. LED blinks five times, then repeats (Locked Piston) Protection Logic Blink Blink Blink Blink Blink OFF - Purpose: To detect locked piston - Cause: Lack of oil to the cylinder, cylinder or piston damaged and or restricted discharge. A Locked Piston can also be caused by foreign materials inside the compressor. - Logic: Compressor is forced off and tries to restart within 2.5 minutes.
  • Page 88 B3. LED blinks five times, then repeats (Locked Piston) Protection Logic Blink Blink Blink Blink Blink OFF - Purpose: To detect locked piston - Cause: Lack of oil to the cylinder, cylinder or piston damaged and or restricted discharge. A Locked Piston can also be caused by foreign materials inside the compressor. - Logic: Compressor is forced off and tries to restart within 2.5 minutes.
  • Page 89 B5. LED blinks seven times, then repeats (IPM Fault: A & E Inverters) Blink Blink Blink Blink Blink Blink Blink OFF - Purpose: Prevent high current due to IPM Short - Cause: Damaged IPM (Dead Short) - Test for a dead short at Point A with a VOM. - Logic: Compressor is forced off and tries to restart in 20 seconds.
  • Page 90 11-3 Check C C1. Harness Connection Check Check Process C2. Capacitor Specifications C3. Compressor Check - Step 1. Power off. Step 2. Check capacitor spec. (table1). Step3. Check resistance of point A Step 4. Check wire harness (INF ohm). Step 5. Check resistance at point B. Step 6. Point D. Check Check Harness...
  • Page 91 11-4 Check D D1. Activate Protection logic Cycle check with protection logic - We have to check Condenser fan and Freezer fan before performing Check D - Locked Piston, Current trip and stroke trip can be activated by other problems then the driver or compressor. →...
  • Page 92 Compressor Troubleshooting WARNING HIGH VOLTAGE Step 1) Open PCB cover Step 2) Check for blinking frequency of LED and PCB LED Lamp When compressor is normal, it does not blink : Refer to the next page to find out what actions to take according to how many times LED blink - 92 -...
  • Page 93 LED operating condition Cause Service guideline 1. Please check, Whether connector of PCB Parts compressor is attached defect or rightly or not. after LED two - time repetiton (Stroke Trip) Compress power off 2. After the first action, Connector You check on normal miss operation of - off -...
  • Page 94 11-5 SERVICE DIAGNOSIS CHART COMPLAINT POINTS TO BE CHECKED REMEDY • Is the power cord unplugged from the outlet? • Plug into the outlet. No Cooling. • Check if the power switch is set to OFF. • Set the switch to ON. •...
  • Page 95 11-6 REFRIGERATION CYCLE Troubleshooting Chart TEMPERATURE STATE OF STATE OF THE OF THE CAUSE REMARKS THE UNIT EVAPORATOR COMPRESSOR PARTIAL Freezer Low flowing sound of A little higher than • Refrigerant level is low due LEAKAGE compartment and Refrigerant is heard ambient to a leak.
  • Page 96 11-6-2 SEALED SYSTEM DIAGNOSIS “Not Cooling” Complaint All components operating, No airflow problems, Not frosted up as a defrost problem problem has been isolated to sealed system area Frost Partial None Pattern? Equalization Equalization Test Test Very Fast Very Slow Very Slow Very Fast Fast...

  • Page 97: Icemaker Operating Method And Trouble Shooting

    12. ICEMAKER OPERATING METHOD AND TROUBLE SHOOTING 12-1 Icemaker’s Basic Operating Method Power On Power On • Adjusts EJECTOR to Start Position with power on. Start Position Icemaking • Walls until water becomes cold after starting the Mode icemaking operation. Full Ice •...
  • Page 98 12-2 Trouble Shooting Ice & Water system Issues 12-2-1 Icemaker not making ice or not making enough ice (Environmental Diagnosis) Icemaker can’t make ices itself. Basically, water, temperature and time are needed. - Water : If no Water, then no Ice. - Temperature : The compartment, where the icemaker is located, has to be at least 1°F so that icemaker dumps ices to the bin.

  • Page 99: Desciption Of Function & Circuit Of Micom

    13. DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM 13-1 FUNCTION 13-1-1 Function When the appliance is plugged in, default set values are 37°F for Refrigerator and 0°F for freezer. You can adjust Refrigerator and Freezer control temperature by pressing ADJUST button on display 1.
  • Page 100 13-1-6 Air Filter condition display function 1. There is a replacement indicator light for the air fresh filter In initial Power On Classification cartridge. / Filter RESET 2. Fresh Air filter needs replacement once every 6 months. 3. When the Changer Icon lights on, you must replace the Filter Status filter.
  • Page 101 13-1-10 DISPENSER LIGHT - Whenever LIGHT button is pressed, DISPLAY changes as belows. Normal status : When dispenser pad is pressed, DISPENSER LIGHT is turned on. ON status : Regardless of the dispenser pad input, DISPENSER LIGHT is always turned on. DIM status : When dispense pad is not pressed, DISPENSER LIGHT is turned on the minimum brightness.
  • Page 102 13-1-16 How to set the display mode and cancel it 1. With the refrigerator door open, keep pressing the Refrigerator Temp Button and ULTRA ICE Button more than 5 seconds, then it goes to the display mode with Special Beep Sound. 2.
  • Page 103 VALVE & WATER TUBE PARTS 617A 625A 623B 616G 616J 623B 616J 627B 603C 627A 619A 603B...
  • Page 104 CASE PARTS CAUTION: Use the part number to order part, not the position number. 502C 410P 410R 503C 405J 603C 503G 603E 626A 624E 207B 158C 624G 402A 624C 500P 503D 409D 158A 103B 610F 271B 409F 103A 282G 282H 207A 120A 402A...
  • Page 105 CASE PARTS...
  • Page 106 CASE PARTS...
  • Page 107 FREEZER PARTS CAUTION: Use the part number to order part, not the position number. 145G 145C 145I 145K 131A 249M 136C 136B 249L 145F 133C 145M 132Q 136E 145J 133C 134A 205D 145H 132P 150B 150D 237C 150C 136A 253D...
  • Page 108 REFRIGERATOR PARTS CAUTION: Use the part number to order part, not the position number. 142B 142B 143A 143A 142A 142A 142D 142D 141H 141H 141A 141A 141B 141B 141F 141F 144A 162B 132R 145D 162A...
  • Page 109 DOOR PARTS CAUTION: Use the part number to order part, not the position number. 500C 241A 231B 233B 233A 231A 241C 241K 212G 235A 241B 241K 241E 241K 241E 312B 205E 243D 243C 243A 262C 244A 244A 624A 405M 262E 262C 243B 619B...
  • Page 110 DOOR PARTS...
  • Page 111 DISPENSER PARTS 501A 278B 275A 276B 276A 278D 276I 405A 279A 281A 500J 402C 279J 267B 276J...
  • Page 112 ICE MAKER & ICE BIN PARTS 630J 630J 612A 630F 630B 630C 600A 611A 607A 630A 630H 630D 606A 630E 630Q 630G...

This manual is also suitable for:

795.74093.41 series795.74099.41 series

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