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Kenmore 795.73052.41 Service Manual
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Kenmore 795.73052.41 Service Manual

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REFRIGERATOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Model #s:
795.73052.41*
795.73053.41*
795.73054.41*
795.73056.41*
795.73059.41*

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Summary of Contents for Kenmore 795.73052.41

  • Page 1 REFRIGERATOR SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. Model #s: 795.73052.41* 795.73053.41* 795.73054.41* 795.73056.41* 795.73059.41*...
  • Page 2 CONTENTS SAFETY PRECAUTIONS ............................... 2 1. SPECIFICATIONS ................................3-4 2. PARTS AND FEATURE ..............................5 3. DISASSEMBLY ................................6-19 REMOVING AND REPLACING REFRIGERATOR DOORS ..................... 6 DOOR ....................................7 DOOR ALIGNMENT ................................8 FAN AND FAN MOTOR (EVAPORATOR) ........................8 DEFROST CONTROL ASSEMBLY ...........................
  • Page 3 1. SPECIFICATIONS 1-1 DISCONNECT POWER CORD BEFORE 1-7 REPLACEMENT PARTS SERVICING 27cu,ft IMPORTANT - RECONNECT ALL 795.73052.41* 795.73053.41* GROUNDING DEVICES 795.73054.41* 795.73056.41* All parts of this appliance capable of conducting electrical 795.73059.41* current are grounded. If grounding wires, screws, straps, Defrost Thermostat ........
  • Page 4 Description 795.7105* Depth w/ Handles 35 3/8 in Depth w/ Handles 32 7/8 in Depth w/ o Door 29 in Depth (Total with Door Open) 47 5/8 in Height to Top of Case 68 3/8 in Height to Top of Door Hinge 69 3/4 in Width 35 3/4 in...
  • Page 5 Mullion - 5 -...
  • Page 6 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 3-2 DOOR ● Door Gasket Replacement 1. Insert gasket into channel ● Mullion Removal Press gasket into channels on the four remaining 1. Remove 2 screws. sides of door. 2. Lift mullion up carefully. Mullion Replacement ● 1. Connect wire harness. 3.
  • Page 8 3-3 Door Alignment * Ice Fan Scroll Assembly Replacement If the space between your 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. Remove the Base Grillie.
  • Page 9 * Fan Motor Replacement DEFROST-CONTROL 1) Remove Caps and 2 screws under Caps GRILLE ASSEMBLY ASSEMBLY 2) Disconnect the lead wire 3) Grip both side of Multi Duct, pull it out. 4) Remove 4 screws of Shroud Refrigerator on back of Multi Duct.
  • Page 10 3-6 LAMP 3-7 MULTI DUCT 1 . Remove the upper and lower Caps by using a flat Unplug Refrigerator, or disconnect power at the circuit screwdriver and remove 2 screws as shown figure. breaker. If necessary, remove top shelf or shelves. 3-6-1 Refrigerator Compartment Lamp 1) Release 2 screws.
  • Page 11 3-9 MAIN PWB WARNING : Unplug the refrigerator before removing the control board. 1) Loosen the 3 screws on the PWB cover. 2) Remove the PWB cover 3) Disconnect wire harness and replace the main PWB in the reverse order of removal. - 1 1 -...
  • Page 12 3-9 DISPENSER 2) Follow the steps in the pictures. 1) Disconnect funnel by pulling down and forward. 3) Use a flat blade screwdriver at bottom side hole of the 3-11 FUNNEL REPLACEMENT “Cover Assembly dispenser” to detach hooks of the bottom 1) Pull up and out on the dispenser cover to remove.
  • Page 13 3-13 CAP DUCT REPLACEMENT 5) Contract the Housing. 1) Pull up and out on the dispenser cover to remove. 2) Disconnect the wire harness. 3) Remove the funnel. 4) Replace in reverse order. 3-15 ICE CORNER DOOR REPLACEMENT 1) Loosen the front screw as shown in the picture. 2) Lift up the hinge with one hand.
  • Page 14 3-16 Icemaker replacement CAUTION : Make sure that the wire harness shown below is positioned properly in the clips on the back of 1) Remove the stainless screws marked in the picture the cover, and taped in place. If this harness is loose it below.
  • Page 15 3-17 HOW TO REMOVE A ICE BIN 3-18 HOW TO INSERT A ICE BIN 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) 2) Lift the lower part slightly. 3) Take the Ice Bin out slowly.
  • Page 16 3-19 HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER 3-19-1 Follow Steps to Remove Step 1) Open the freezer door. Step 2) Remove the lower basket. Step 3) Remove the two screws from the guide rails (one Step 4) Removal of the freezer door is done by lifting clear from each side).
  • Page 17 3-19-2 Follow Steps to Reinstall Step 2) ① Assemble a bar and gear ice with screw. Step 1) Insert both side of supporter cover tv into ② Push the otherside of the gear to inside of the connector rails, and then screw them. bar.
  • Page 18 3-20 WATER VALVE DISASSEMBLY METHOD 3-21 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 19 3-22 PULL OUT DRAWER To remove, pull the drawer out to full extension. Lift the front of the drawer up, then pull it straight out. To install, slightly tilt up the front and insert the drawer into the frame and push it back into place. - 19 -...
  • Page 20 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 as the below. gas from the evaporator of the refrigerator and compresses this gas to high-temperature and high-pressure gas.
  • Page 21 5. CIRCUIT DIAGRAM - 21 -...
  • Page 22 6. TROUBLESHOOTING 6-1. Error Code Summary WARNING: When you check the Resistance values, be sure to turn off the power. And wait for the voltage-discharge sufficiently. NOTE) 3 hours before the error : Press the Ultra ICE button and Freezer button simultaneously 3 hours after the error : All errors, except for "Er rt", "Er SS", "Er IS(except for Icing sensor)", "Er gF", "Er It"...
  • Page 23 7. PCB Picture 7-1. Main PCB CON2 CON3 ( P/N : EBR747964**) CON5 CON1 CON6 CON201 CON7 CON4 7-2. Display PCB ( P/N : EBR794222**) CON103 CON102 CON101 CON105 - 23 -...
  • Page 24 7. PCB Picture 7-3. Sub PCB ( P/N : EBR60070712/34) CON1 CON2 - 24 -...
  • Page 25 8. Trouble Shooting 8-1. Freezer Sensor Error (Er FS) Symptom Check Point 1. Er FS 1. Check for a loose connection 2. Check Sensor Resistance Resistance [Ω] Short CON7 Open pin ~ 16 Other Normal CON7 Resistance [Ω] pin ~ 16 -22ºF / -30ºC -13ºF / -25ºC -4ºF / -20ºC...
  • Page 26 Freezer Sensor Error (Er FS) Reconnect or Is the Connector disconnected Check the Sensor resistance. repair the or loose between Main PCB and Is resistance normal? connector sensor? Check the Temperature and resistance refer to the table. No problem? CON7 CON7 Resistance [Ω] pin ~ 16...
  • Page 27 8-2. Refrigerator Sensor Error (Er rS) Symptom Check Point 1. Er rS 1. Check for a loose connection 2. Check Sensor Resistance Resistance [Ω] Short CON7 Open pin ~ 14 Other Normal CON7 Resistance [Ω] pin ~ 14 23ºF / -5ºC 32ºF / 0ºC 41ºF / 5ºC 50ºF / 10ºC...
  • Page 28 Refrigerator Sensor Error (Er rS) Reconnect or Is the Connector disconnected Check the Sensor resistance. repair the or loose between Main PCB and Is resistance normal? connector sensor? Check the Temperature and resistance refer to the table. No problem? CON7 CON7 Resistance [Ω] pin ~ 14...
  • Page 29 8-3. Icing Sensor Error (Er IS) Symptom Check Point 1. Er IS 1. Check for a loose connection 2. Check Sensor Resistance Resistance [Ω] CON5 Short pin ~ 17 Open Other Normal CON5 Resistance [Ω] pin ~ 17 -22ºF / -30ºC -13ºF / -25ºC -4ºF / -20ºC -13ºF / -25ºC...
  • Page 30 Icing Sensor Error (Er IS) Reconnect or Is the Connector disconnected Check the Sensor resistance. repair the or loose between Main PCB and Is resistance normal? connector sensor? Check the Temperature and resistance refer to the table. No problem? CON5 Resistance [Ω] pin ~ 2 -22ºF / -30ºC...
  • Page 31 8-4. Defrost Sensor Error (Er dS) Symptom Check Point 1. Er dS 1. Check for a loose connection 2. Check Sensor Resistance Resistance [Ω] Short CON7 Open pin ~ 18 Other Normal CON7 Resistance [Ω] pin ~ 18 23ºF / -5ºC 32ºF / 0ºC 41ºF / 5ºC 50ºF / 10ºC...
  • Page 32 Defrost Sensor Error (Er dS) Reconnect or Is the Connector disconnected Check the Sensor resistance. repair the or loose between Main PCB, Is resistance normal? connector Defrost controller and Sensor? Check the Temperature and resistance refer to the table. No problem? CON7 Resistance [Ω] pin ~ 18...
  • Page 33 8-5. Ice Maker Motor Error (Er It) Symptom Check Point 1. Er It 1. Check for a loose connection 2. Check Sensor Resistance - 33 -...
  • Page 34 Ice Maker Motor Error (Er It) Change the Explain to Main PCB Input Ice Maker test mode(Push customer Check the ice maker forward status The ice maker test button),check The voltage (1)~(2) point 0V? The Ice Tray,Ice maker motor Rotate? Change the Check the ice maker reverse status Main PCB...
  • Page 35 8-6. Defrost Heater Error (Er dH) Symptom Check Point 1. Er dH 1. Check the door gasket 2. Check the Defrost control part 3. Check the PCB output voltage Part Resistance [Ω] FUSE-M Defrost Heater 34~42 Defrost Sensor 22k↑ TEST MODE 3 Voltage [V] CON3 112V ~ 116V...
  • Page 36 Defrost Heater Error (Er dH) Input Test 3 Mode (Push the button 3 times) Replace the Replace Check the Door gasket . Check the Heater Voltage. Door gasket Main PCB Is door gasket damaged? Is voltage 220~240V? Change TEST MODE 3 Voltage [V] Fuse-M Check the Defrost control part.
  • Page 37 8-7. Freezer Fan Error (Er FF) Symptom Check Point 1. Er FF 1. Check the air flow 2. Check the Fan Motor 2. Check the PCB Fan motor voltage Fan Motor TEST MODE 1 Voltage [V] CON7 8~12V pin ~ 12 CON7 Not 0V, 5V pin ~ 12...
  • Page 38 Freezer Fan Error (Er 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? CON7 TEST MODE 1 Voltage [V] Go to 3 Open the freezer door and Check CON7 8~12V the air flow.
  • Page 39 8-8. Icing Fan Error (Er IF) Symptom Check Point 1. Er IF 1. Check the air flow 2. Check the Connector 2. Check the PCB Fan motor voltage Fan Motor TEST MODE 1 Voltage [V] CON7 8~12V pin ~ 5 CON7 Not 0V, 5V pin ~ 5...
  • Page 40 Freezer Fan Error (Er 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? CON7 TEST MODE 1 Voltage [V] Go to 3 Open the freezer door and Check CON7 8~12V the air flow.
  • Page 41 8-9. Condenser Fan Error (Er CF) Symptom Check Point 1. Er CF 1. Check the air flow 2. Check the Connector 2. Check the PCB Fan motor voltage Fan Motor TEST MODE 1 Voltage [V] CON7 8~12V pin ~ 6 CON7 Not 0V, 5V pin ~ 6...
  • Page 42 Condenser Fan Error (Er 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? CON7 TEST MODE 1 Voltage [V] Go to 3 Check the fan rotating. CON7 8~12V Does fan rotate?
  • Page 43 8-10. Communication Error (Er CO) Symptom Check Point 1. Er CO 1. Check the loose connection 2. Check the Hinge connection CON101 Display Voltage [V] CON101 pin ~ 6 CON101 Not 0V, 5V pin ~ 5 CON101 Not 0V, 5V pin ~ 3 CON5 Not 0V, 5V...
  • Page 44 Communication Error (Er CO) Change the Main PCB Check the voltage. Is CON101 5 pin ~ 3 voltage 0V or 5V? Check the loose connection Voltage Housing CON101 pin ~ 3 0V, 5V Check the Check the voltage. Hinge (loose connection) Is CON101 5 pin ~ 6...
  • Page 45 8-11. 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 - 45 -...
  • Page 46 8-11. Cube mode doesn’t work LEVER S/W Voltage [V] Resistance [Ω] Pushing 112~115V Geared Motor 31.1 ~ 42.1 CON2 Dispenser Motor 9.9 ~ 12.1 pin ~ 4 0~2V Pushing Pushing 9~12V CON1 12 pin ~ CON1 13 0~2V Pushing - 46 -...
  • Page 47 Cube mode doesn't work Replace Geared Motor Check the resistance value. Is Geared Motor resistance 144~ 176Ω? 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 Replace LEVER S/W...
  • Page 48 8-12. 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 - 48 -...
  • Page 49 8-12. Crush mode doesn’t work LEVER S/W Voltage [V] Resistance [Ω] Pushing 112~115V Geared Motor 31.1 ~ 42.1 CON2 Dispenser Motor 9.9 ~ 12.1 pin ~ 12 0~2V Pushing Pushing 9~12V CON3 12 pin ~ CON1 13 0~2V Pushing - 49 -...
  • Page 50 Crush mode doesn't work Replace Geared Motor Check the resistance value. Is Geared Motor resistance 87 ~ 107Ω? 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 Replace LEVER S/W...
  • Page 51 8-13. 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 LEVER S/W Voltage [V] Pushing 112~115V CON2 pin ~11 0~2V Pushing Resistance [Ω] Pilot Valve 360~420 Water valve 360~420 - 51 -...
  • Page 52 Water mode doesn't work Replace Check the loose connection Water Valve Check the resistance value. Is Water Valve resistance 360~420 Ω? Change the Check the voltage. (while pushing the lever S/W) Is voltage correct? Water Valve Resistance [Ω] Water valve 360~420 <...
  • Page 53 8-14. Refrigerator room lamp doesn’t work Symptom Check Point 1. Refrigerator room 1. Check the Refrigerator door switch sticky lamp doesn’t work 2. Check the door S/W resistance 3. Check the LED Lamp Door S/W CON6 LED Lamp Resistance [Ω] Normal Infinity Door S/W...
  • Page 54 Refrigerator room lamp doesn’t work Change the Change the Check the Refrigerator door switch. Door S/W Door S/W Check the LED Lamp voltage. Does it feel sticky? Is it 0~2V? (While door closed) Change the Check the door S/W resistance. Door S/W Is it correct compared with table? Change the...
  • Page 55 8-15. Freezer room lamp doesn’t work Symptom Check Point 1. Freezer room lamp 1. Check the Freezer door switch sticky doesn’t work 2. Check the door S/W resistance 3. Check the LED Lamp F room LED PCB Door S/W CON6 Resistance [Ω] Normal Infinity...
  • Page 56 Freezer room lamp doesn’t work Change the Change the Check the Freezer door switch. Door S/W LED Lamp Check the LED Lamp voltage Does it feel sticky? Is voltage 12V? (While door open) Change the Check the door S/W resistance. Door S/W Is it correct compared with table? Explain to customer...
  • Page 57 8-16. Poor cooling in Fresh food section Symptom Check Point 1. Poor cooling in Fresh 1. Check the sensor resistance food section 2. Check the air flow 3. Check the air Temperature 4. Check the R-Damper motor voltage Duct Fan Motor CON7 Resistance [Ω] pin ~ 14...
  • Page 58 Poor cooling in Fresh food section Check the Compressor Check the air temperature. and sealed Is it cold? system Check the sensor resistance. Go to 7 Check the Fan Motor voltage CON7 Replace Is Fan Motor voltage 8~12V? Resistance [Ω] Main PCB pin ~ 14 23ºF / -5ºC...
  • Page 59 8-17. Poor cooling in Freezer compartment Symptom Check Point 1. Poor cooling in 1. Check the sensor resistance Freezer compartment 2. Check the air flow 3. Check the air Temperature 4.Check the Fan motor sticky 4. Check the Fan motor voltage Duct Fan Motor CON7...
  • Page 60 Poor cooling in Freezer compartment Check the Compressor Check the air temperature. and sealed Is it cold? Check the sensor resistance. system Change the CON7 Resistance [Ω] Fan motor Check the Fan motor. pin ~ 16 Rotate fan using hand. -22ºF / -30ºC It feel sticky? -13ºF / -25ºC...
  • Page 61 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 62 8-18. Home Bar Heater do not work Symptom Check Point 1. Home Bar do not work 1. Check the Main PCB 2. Check the Home Bar Heater Part Resistance [Ω] Defrost Heater 1912~2314 TEST MODE 3 Voltage [V] CON3 112V ~ 116V pin ~ 10 TEST MODE 1 Voltage [V]...
  • Page 63 Home Bar Heater do not work) Input Test 3 Mode (Push the button 3 times) Replace the Replace Check the Door gasket . Check the Heater Voltage. Door gasket Main PCB Is door gasket damaged? Is voltage 112~116V? Connect the TEST MODE 3 Voltage [V] housing...
  • Page 64 8-19. Hygiene fan doesn’t work Symptom Check Point 1. Hygiene fan doesn’t 1. Check Hygiene Fan motor voltage work 2. Main PCB Hygiene Fan motor CON6 Voltage [V] CON6 pin ~ 6 - 64 -...
  • Page 65 Hygiene fan doesn’t work Change the Change the Fan motor Check the Hygiene voltage Choose the Hygiene Max in display Is voltage 12V? (While door open) Check the PCB Voltage. Is CON6 2 pin ~ 6 voltage 12V? Voltage [V] CON6 pin ~ 6 Explain to customer...
  • Page 66 8-20. Hygiene LED doesn’t work Symptom Check Point 1. Hygiene LED 1. Check Hygiene LED voltage doesn’t work 2. Main PCB Hygiene LED CON6 Voltage [V] CON6 pin ~ 6 - 66 -...
  • Page 67 Hygiene LED doesn’t work Change the Change the Fan motor Check the Hygiene LED voltage Choose the Hygiene Max in display Is voltage 12V? (While door open) Check the PCB Voltage. Is CON6 4 pin ~ 6 voltage 12V? Voltage [V] CON6 pin ~ 6 Explain to customer...
  • Page 68 8-21. Hygiene LED doesn’t work Symptom Check Point 1. Hygiene LED doesn’t 1. Check Hygiene LED voltage work 2. Main PCB Hygiene Fan motor CON6 Hygiene Box Fan motor Voltage [V] Hygiene LED CON6 pin ~ 6 F LED R LED - 68 -...
  • Page 69 Hygiene LED doesn’t work Change the Change the Fan motor Check the Hygiene LED voltage Choose the Hygiene Max in display Is voltage 12V? (While door open) Check the PCB Voltage. Is CON6 4 pin ~ 6 voltage 12V? Voltage [V] CON6 pin ~ 6 Explain to customer...
  • Page 70 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 * 3 times : Forced defrost mode...
  • Page 71 9-2 TEMPERATRUE CHART - FRZ AND ICING SENSOR TEMP RESISTANCE VOLTAGE -39°F (-40°C) 73.29 ㏀ 4.09 V -30°F (-35°C) 53.63 ㏀ 3.84 V -21°F (-30°C) 39.66 ㏀ 3.55 V -13°F (-25°C) 29.62 ㏀ 3.23 V -4°F (-20°C) 22.33 ㏀ 2.89 V 5°F (-15°C) 16.99 ㏀...
  • Page 72 9-3 TEMPERATRUE CHART - REF AND DEF SENSOR TEMP RESISTANCE VOLTAGE -39°F (-40°C) 225.1 ㏀ 4.48 V -30°F (-35°C) 169.8 ㏀ 4.33 V 129.3 ㏀ -21°F (-30°C) 4.16 V 99.30 ㏀ -13°F (-25°C) 3.95 V 76.96 ㏀ -4°F (-20°C) 3.734 V 60.13 ㏀...
  • Page 73 9-4 How to check the Fan-Error (1) EBR650027 After sending a signal to the fan, the MICOM checks the BLDC fan motor s lock status. If there is no feedback signal from the BLDC fan, the fan motor stops for 10 seconds and then is powered again for 15 seconds.
  • Page 74 10. COMPONENT TESTING INFORMATION 10-1 Defrost Controller Assembly Function - Controller assembly is consist of 2 kinds of part those are fuse-m and sensor. we can decide part is defect or not when we check the resistance. - Fuse-m can cut off the source when defrost heater operate the unusual high temperature. - Sensor give temperature information to Micom How to Set a ohmmeter to the 2 housing pin.
  • Page 75 10-2 Sheath Heater Function Sheath heater is a part for defrost. All heating wire is connected to only one line. So we can decide part is defect or not when we check the resistance. How to Measure (1) (2) Set a ohmmeter connect to The 2 housing pin. Measure the 2 pin connected to Sheath Heater.
  • Page 76 10-5 Dispenser DC Motor Function - Dispenser DC Motor : When customer push the dispenser button, Pull duct door and abstract from ice bank. How to Measure Dispensor DC Motor Standard Dispenser DC Motor Test Points Result 9.9 ~ 12.1 Ω (1) to (2) - 76 -...
  • Page 77 10-6 AC Motor ASSEMBLY Function The In-door motor of AC motor assembly pushes ices to the dispenser. How to < In-door Motor > < In-door Motor > Measure Take out the male Take out the male housing from housing from female housing female housing Measure the...
  • Page 78 10-7 Damper Function The damper supplies the cold air at freezer room to chillroom by using the damper’s plate. Chillroom is colder than before when damper’s plate is open. When damper’s plate is close, chillroom’s temperature will rise. How to Measure <...
  • Page 79 10-9 Flow Sensor Function Flow Sensor (in machine room) Count the water quantity from city water to water filter in refrigerator How to Measure Flow Sensor (in machine room) Standard Test Points Result 4 ~ 30 Ω Red wire to Black wire - 79 -...
  • Page 80 11. Compressor Troubleshooting PCB Check (Simplify) Protection Logic Test 1 Mode(p.40) A-inverter Con201 Time>30sec Power Off Power On PCB OK Disconnect & V≒200 Replace PCB Check Voltage about 200V past 30second after turn on Test Mode Comp Ref. Display & sound Refer FC75(A-Inverter) TEST1...
  • Page 81 11-1 Check A - There is PCB located in the PCB case. The control driver is PCB for the compressor. - This step shows the source voltage of the driver PCB. Step1. Open PCB Cover Step2. Check PCB - 81 -...
  • Page 82 11-2 Check B B1. LED blinks once, then repeats (FCT0 Fault: A-Inverter) 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 83 B3. LED blinks five times, then repeats (Locked Piston: A Inverter) Protection Logic Blink Blink Blink Blink Blink OFF - Purpose: To detect locked piston - Cause: Lack of oil to the cylinder, cylinder or piston damaged or restricted discharge. A Locked Piston can also be caused by foreign materials inside the compressor.
  • Page 84 B5. LED blinks seven times, then repeats (IPM Fault: A Inverter) Protection Logic 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 minutes.
  • Page 85 11-3 Check C Refer to <Fig. 1> 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 86 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 87 Compressor Troubleshooting Step 1) Open PCB cover Step 2) Check for blinking frequency of LED, On the main PCB If 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 - 87 -...
  • Page 88 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 89 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 90 11-6 Sealed system ▼ 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 91 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 pattern Partial None on evaporator *Equalization *Equalization Test Test Very Fast Very Slow Very Slow Very Fast...
  • Page 92 12. ICEMAKER OPERATING METHOD AND TROUBLE SHOOTING 12-1 Icemaker’s Basic Operating Method Power On Power On Start Position • Adjusts Ice Tray to Start Position with power on. • Adjusts Ice Tray to Start Position with power on. • Waits until water becomes ice. Icemaking For cold air circulation, Ice tray will be Mode...
  • Page 93 12-2 ICE MAKER FUNCTIONS 12-2-1 Icemaking Mode 1. Icemaking Mode begins right after the ice tray fills with water. 2. Icemaker waits until water becomes ice in the ice tray. Ice-detecting sensor checks if the ice bin is full every 2min. 12-2-2 Harvest Mode At least in 110min, since icemaker begun icemaking mode, Icemaker starts to twist the ice tray to drop ices into the Ice bin.
  • Page 94 12-3-2 Icemaker not making ice or not making enough ice (Icemaker Unit & Ice-detecting sensor Diagnosis) Icemaker Unit and Ice-detecting sensor Diagnosis The icemaker unit and Ice-detecting sensor is programmed to be diagnosed. Follow the procedure step by step to check to see if icemaker and Ice-detecting sensor is working normally. Icemaker Unit Ice-detecting sensor Test Switch...
  • Page 95 STEP (Ice-detecting sensor Diagnosis) 1. Remove Ice bin from compartment 2. Close both of the Fresh 3. Wait for 3min. Food doors. 4. Open the Freezer drawer. 5. Press and hold the Door Alarm and Refrigerator Temp. Buttons at the same time. If "EMPTY"...
  • Page 96 13. DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM 13-1 FUNCTION 13-1-1 Function 1. When the appliance is plugged in, it is set to 37°F for Refrigerator and 0°F for freezer. You can adjust the Refrigerator and the Freezer control temperature by pressing the ADJUST button. 2.
  • Page 97 13-1-5 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 Air Filter Icon lights on, you must replace the Filter Status CHANGE AIR FILTER CHANGE AIR FILTER...
  • Page 98 13-1-12 Ultra ICE 1. The purpose of this function is to intensify the cooling speed of freezer and to increase the amount of ice. 2. Whenever selection switch is pressed, selection/release, the Icon will turn ON or OFF. 3. If there is a power outage and the refrigerator is powered on again, Ultra ICE will be canceled. 4.
  • Page 99 13-1-15 Defrosting (removing frost) 1. Defrosting starts each time the COMPRESSOR running time Betwee 7~50 hours. 2. For initial power on or for restoring power, defrosting starts when the compressor running time reaches 4 hours. 3. Defrosting stops if the sensor temperature reaches 46.4°F(8°C) or more. If the sensor doesn’t reach 46.4°F(8°C) in 1 hours, the defrost mode is malfunctioning.
  • Page 100 VAL VE & WATER TUBE PARTS 617A 625A 616G 616D 616G 623B 616J 623B 616J 616F 603C 627B 616D 627A 619A 603B CAUTION: Use the part number to order part, not the location number.
  • Page 101 CASE PARTS CAUTION: Use the part number to order part, not the position number. 603C 503E 603E 626A 624E 207B 624G 503D 624C 503G 624A 409D 158A 271B 103B 103A 501F 207A 120A 150A 150C 150B 406D 150D 610D 120C 282G 405G 329B...
  • Page 102 CASE PARTS...
  • Page 103 CASE PARTS...
  • Page 104 FREEZER PARTS CAUTION: Use the part number to order part, not the position number. 133B 133B 145C 131A 136C 136B 133A 133B 132P 237C 145F 136A...
  • Page 105 REFRIGERATOR PARTS CAUTION: Use the part number to order part, not the position number. 141A 141A 141C 141C 141B 141E 141E 141B 142B 141A 141C 143A 141E 142A 142D 141B 141D 154A 161C 151A 161B 151B 146E 161A 162B 145D 162A...
  • Page 106 DOOR PARTS CAUTION: Use the part number to order part, not the position number. 241A 241K 231B 233B 241C 233A 231A 241B 212G 235A 241K 241D 241G 241D 312B 241E 243D 243C 619B 243A 262C 244A 244A 262E 262C 243B 615A 267A 253A...
  • Page 107 DOOR PARTS...
  • Page 108 DISPENSER PARTS 278A 276G 276F 278F 278B 402C 276B 275A 500C 276A 278C 281A 278D 405A 279J 279A 501A...
  • Page 109 ICE MAKER & ICE BIN PARTS CAUTION : Use the part number to order part, not the position number. 630J 630J 612A 630F 630B 630C 600A 611A 607A 630A 630H 630D 606A 630E 630Q 630G...

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