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CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

Model #s:

REFRIGERATOR 

SERVICE MANUAL

795.71042.01*
795.71043.01*
795.71049.01*

P/No. MFL62188032

Summary of Contents for 795.71042.01

Page 1: ...CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL Model s REFRIGERATOR SERVICE MANUAL 795 71042 01 795 71043 01 795 71049 01 P No MFL62188032 ...

Page 2: ...7 TROUBLESHOOTING WITH ERROR DISPLAY 17 24 8 TROUBLESHOOTING WITHOUT ERROR DISPLAY 25 30 9 REFERENCE 31 36 10 COMPONENT TESTING INFORMATION 37 42 11 TRBOUBLESHOOTING 43 49 12 ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR 50 53 13 DESCIPTION OF FUNCTION CIRCUIT OF MICOM 54 58 SAFETY PRECAUTIONS Please read the following instructions before servicing your refrigerator 1 Unplug the power befo...

Page 3: ...05701 Compressor Hi Side TCA34649901 Evaporator Lo Side 5421JJ1003L Condenser ACG72915205 Dryer 5851JA2007E Condenser Fan Motor 4681JB1029D Temperature Control ABQ56655314 STS ABQ56655316 WB ABQ56655315 SW Main Control EBR67348004 Refrigerator Fan Motor 4681JB1027J 28cu ft 795 71042 01 795 71043 01 795 71049 01 1 8 AIR FLOW CIRCULATION D AIR 1 3 ELECTRICAL SPECIFICATIONS Temperature Control Freeze...

Page 4: ... with Door Open Height to Top of Case Height to Top of Door Hinge Width Width door open 90 deg w o handle Width door open 90 deg w handle A B C D E F G H I 35 3 8 in 32 7 8 in 29 in 47 5 8 in 68 3 8 in 69 3 4 in 35 3 4 in 39 1 4 in 44 1 4 in Description 795 7104 ...

Page 5: ...M B Refrigerator Light A Cover Assembly Display B Modular Door Bins C Fixed Door Bin D Fixed Door Bin E Refrigerator Shelves F Automatic Icemaker G Pullout Drawer K Durabase L Divider M Dairy Bin N Humidity Controlled Crisper H Pantry Drawer I Ice Bin J ...

Page 6: ...l the wire harnesses 3 Remove the grounding screw 4 Rotate hinge lever 5 counterclockwise Lift the top hinge 6 free of the hinge lever latch 7 IMPORTANT When lifting the hinge free of the latch be careful that the door does not fall forward Lift the door from the middle hinge pin and remove the door Place the door inside facing up on a nonscratching surface CAUTION Before you begin remove food and...

Page 7: ...screws Door Gasket Removal 2 Lift mullion up carefully 3 Disconnect wire harness Door Gasket Replacement 1 Insert gasket into channel Press gasket into channels on the four remaining sides of door 2 Insert mullion into channel Inserting mullion assy into bracket door Mullion Replacement 1 Connect wire harness 3 Assemble 2 screws ...

Page 8: ...parate the connector with the Defrost Control assembly and replace the Defrost Control assembly after cutting the Tie Wrap Figure 2 Figure 1 Figure 2 GRILLE ASSEMBLY DEFROST CONTROL ASSEMBLY 3 3 Door Alignment If the space between your doors is uneven follow the instructions below to align the doors Remove the Base Grillie Turn the leveling legs CCW to raise or CW to lower the height of the front ...

Page 9: ...D Assembly 3 To remove the case lamp and cover lamp release another 2 screws as following picture 1 Unplug refrigerator power cord form outlet 2 Remove screw with driver 3 Grasp the cover Lamp pull the cover downward 3 6 2 Freezer Compartment Lamp 3 7 MULTI DUCT 1 Remove the upper and lower Caps by using a flat screwdriver and remove 2 screws Figure 3 2 Disconnect the lead wire on the bottom posit...

Page 10: ... freezer door up to unhook it from the rail support and remove Pull both rails to full extension Step 5 First Remove the gear from the left side first by releasing the tab behind the gear place a screwdriver between the gear and the tab and pull up on the gear Second Remove the center rail Third Remove the gear from the right side by following the same steps for the left side NOTE THIS TAB MUST BE...

Page 11: ...into the left side gear and insert the gear into the clip Step 4 The rail system will align itself by pushing the rails all the way into the freezer section Pull the rails back out to full extension Step 5 Reinstall the freezer door by inserting the rail tabs into the guide rail Step 6 Reinstall the two screws into the guide rails one from each side Step 7 Reinstall the lower basket and close the ...

Page 12: ...T 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 ...

Page 13: ...ressure gas from the evaporator of the refrigerator and compresses this gas to high temperature and high pressure gas It then delivers the gas to the condenser 4 1 2 Note for Usage 1 Be careful not to allow over voltage and over current 2 Do not drop or handle carelessly 3 Keep away from any liquid If liquid such as oil or water enters the Cover PTC Compressor may fail due to breakdown of their in...

Page 14: ... 14 5 CIRCUIT DIAGRAM ...

Page 15: ... 15 6 PCB Picture 6 1 Main PCB P No MFG EBR67348002 2010 03 Picture CON4 CON5 CON8 CON3 CON2 CON9 CON1 ...

Page 16: ... 16 6 2 Display PCB Sub PCB P No Display PCB EBR42479303 2010 03 Picture CON01 ...

Page 17: ...7 1 Freezer Sensor Error Er FS No 1 2 Checking flow Check for a loose connection Check the Blue White to Blue White Result SVC Action CON4 Temperature table 1 1 To 2 22 F 30 C 13 F 25 C 4 F 20 C 5 F 15 C 14 F 10 C 23 F 5 C 32 F 0 C Result 40 5 38 5 30 5 28 5 23 21 5 17 5 16 5 13 5 12 5 10 5 9 5 8 7 5 The sensor is determined by the temperature For example 23 indicates 4 F ...

Page 18: ...n 7 2 Refrigerator Sensor Error Er rS No 1 2 Checking flow Check for a loose connection Check the White to White Result SVC Action Temperature table 2 1 To 2 23 F 5 C 32 F 0 C 41 F 5 C 50 F 10 C 59 F 15 C Result 38 5 36 5 30 5 29 5 24 5 23 5 20 19 16 15 5 The sensor is determined by the temperature For example 30 indicates 32 F CON4 ...

Page 19: ...t SVC Action No 1 2 Checking flow Check for a loose connection Check the Red to Bright Orange Result SVC Action Temperature table 1 1 To 2 22 F 30 C 13 F 25 C 4 F 20 C 5 F 15 C 14 F 10 C 23 F 5 C 32 F 0 C Result 40 5 38 5 30 5 28 5 23 21 5 17 5 16 5 13 5 12 5 10 5 9 5 8 7 5 The sensor is determined by the temperature For example 23 indicates 4 F CON9 ...

Page 20: ...ost Sensor Error F dS No 1 2 Checking flow Check for a loose connection Check the Orange to Orange Result SVC Action Check the Brown to Brown The sensor is determined by the temperature For example 23 indicates 4 F CON4 Temperature table 3 1 To 2 23 F 5 C 32 F 0 C 41 F 5 C 50 F 10 C 59 F 15 C Result 38 5 36 5 30 5 29 5 24 5 23 5 20 19 16 15 5 ...

Page 21: ...Checking flow Check the Door gasket Check the Defrost control part 3 Input Test 3 Mode Push the button 3 times 4 Check the Blue to Orange Result SVC Action Fuse M Def Heater Def Sensor 5 Release the test mode Push the button 1 times Normal CON3 CON3 Result 112 116 V 0 V SVC Action Go to the 5 Replace Main PCB 6 Check the Blue to Orange Result 0 V 112 116 V SVC Action Explain to customer Replace Ma...

Page 22: ...ile an error code is displayed the fan is not working 3 Check the Fan motor Rotate fan using your hand It feel sticky change the motor Cause of ice or rust inside of motor 4 Check the Fan motor voltage Result SVC Action Below 9 V 0 or 5 V 1 2 2 3 Change the PCB Change the motor Point Result SVC Action CON4 Status No windy Windy SVC Action Go to 3 Go to 4 1 2 3 ...

Page 23: ...le an error code is displayed the fan is not working 3 Check the Fan motor and surrounding Rotate fan using your hand It feel sticky change the motor Result SVC Action 4 Check the Fan motor voltage Below 9 V 0 or 5 V 1 2 2 3 Change the PCB Change the motor Result SVC Action Status No windy Windy SVC Action Check motor Go to the 4 CON4 1 2 3 ...

Page 24: ...range CON5 6 Check the White Red to White Black CON5 CON101 Display 3 Check the Orange to Brown Result 0 V or 5 V Other SVC Action Change the Display PCB Go to the 4 4 Check the Orange to Red Result 0 V or 5 V Other SVC Action Change the Main PCB Go to the 5 Result 0 V or 5 V Other SVC Action Change the Display PCB Go to the 6 Result 0 V or 5 V Other SVC Action Change the Main PCB Explain to custo...

Page 25: ...ellow Blue to Sky blue 4 Check the Blue to Black Closed Open 0 2 V Other 115 V Other Explain to customer Change the Main PCB Change the F Lampe Change the PCB Status Result SVC Action Closed Open 5 V Other 0 V Other Go to the 4 Change the Door S W Go to the 4 Change the Door S W Status Result SVC Action Normal Push S W 0Ω Infinity Infinity 0Ω Go to the 3 Change door S W Go to the 3 Change door S W...

Page 26: ...k Closed Open 0 2 V Other 12 V Other Explain to customer Change the Door S W Explain to customer Change the LED Lamp Status Result SVC Action Normal Push S W 0Ω Infinity Infinity 0Ω Go to the 3 Change door S W Go to the 3 Change door S W Status Result SVC Action Normal 12 V Other Go to the 4 Change the PCB Status Result SVC Action Normal 12 V Other Go to the 5 Change the LED Lamp Status Result SVC...

Page 27: ...s determined by the temperature For example 30 indicates 32 F Result SVC Action CON4 1 To 2 23 F 5 C 32 F 0 C 41 F 5 C 50 F 10 C 59 F 15 C Result 38 5 36 5 30 5 29 5 24 5 23 5 20 19 16 15 5 Status Windy No windy SVC Action Go to the 4 Check the R Fan motor Check the damper Go to the 6 4 Check the air temperature Cold or not Status Cold Not cold SVC Action Explain to customer Check the Compressor A...

Page 28: ...e F Fan motor voltage 1 3 2 4 Open Closed Not working 1 Mode 2 Mode 1 2 mode Damper is normal Explain to customer Change the damper Test Mode Damper State SVC Action 1 to 2 3 to 4 270 330Ω Other 270 330Ω Other It s normal Change damper It s normal Change damper Test Point Result SVC Action Below 12 V 0 or 5 V 1 2 2 3 Change the PCB Change the motor Point Result SVC Action Sticky Motor Change the m...

Page 29: ...ermined by the temperature For example 23 indicates 4 F Result SVC Action Status Windy No windy SVC Action Go to the 4 Check the F Fan motor 4 Check the air temperature Cold or not Status Cold Not cold SVC Action Explain to customer Check the Compressor And sealed system 1 To 2 22 F 30 C 13 F 25 C 4 F 20 C 5 F 15 C 14 F 10 C 23 F 5 C 32 F 0 C Result 40 5 38 5 30 5 28 5 23 21 5 17 5 16 5 13 5 12 5 ...

Page 30: ...refrigerator door and Check the air flow The sensor is determined by the temperature For example 30 indicates 32 F Result SVC Action 1 To 2 23 F 5 C 32 F 0 C 41 F 5 C 50 F 10 C 59 F 15 C Result 38 5 36 5 30 5 29 5 24 5 23 5 20 19 16 15 5 Status Windy No windy SVC Action Go to the 4 Check the R Fan Check the damper Go to the 5 4 Input Test 2 Mode and Check the air flow Push the button 1 time 5 Chec...

Page 31: ... to make TEST MODE If you push the test button on the Main PCB the refrigerator will be enter the TEST MODE 2 How to remove Terminal Position Assurance TPA 1 time Comp Damper All FAN on All things displayed 2 times Damper closed 22 22 displayed 3 times Forced defrost mode 33 33 displayed Main PWB AC TPA DC TPA ...

Page 32: ...F 5 C 32 F 0 C 41 F 5 C 50 F 10 C 59 F 15 C 68 F 20 C 77 F 25 C 86 F 30 C 95 F 35 C 104 F 40 C RESISTANCE 73 29 53 63 39 66 29 62 22 33 16 99 13 05 10 10 7 88 6 19 4 91 3 91 3 14 2 54 2 07 1 69 1 39 VOLTAGE 4 09 V 3 84 V 3 55 V 3 23 V 2 89 V 2 56 V 2 23 V 1 92 V 1 63 V 1 38 V 1 16 V 0 97 V 0 81 V 0 67 V 0 56 V 0 47 V 0 39 V ...

Page 33: ...C 32 F 0 C 41 F 5 C 50 F 10 C 59 F 15 C 68 F 20 C 77 F 25 C 86 F 30 C 95 F 35 C 104 F 40 C RESISTANCE 225 1 169 8 129 3 99 30 76 96 60 13 47 34 37 55 30 24 13 19 53 15 91 13 03 10 74 8 89 7 40 6 20 VOLTAGE 4 48 V 4 33 V 4 16 V 3 95 V 3 734 V 3 487 V 3 22 V 2 95 V 2 67 V 2 40 V 2 14 V 1 89 V 1 64 V 1 45 V 1 27 V 1 10 V 0 96 V ...

Page 34: ...ing Step 1 Open PWB cover Step 2 Check for blinking frequency of LED PWB 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 WARNING HIGH VOLTAGE ...

Page 35: ... on on off repeating piston constraint 1 After resetting power check if it is running normal 2 If the same symptom arises after the first action replace PCB 3 If the same symptom arises after the second action replace compressor 3 LED six time repetiton on on on on on on off on on on on on on off repeating circuit overcurrent error 1 After resetting power check if it is running normal If the same ...

Page 36: ...there is a fan motor malfunction this process is repeated 3 times If the fan motor is determined to be defective the error code will be shown in the display for 30 minutes At this point the process will be repeated until the fan motor operates normally If normal operation is achieved the error display is erased and the MICOM is reset automatically No signal Error Display 15s 10s 15s 10s 15s Normal...

Page 37: ...ure Fuse M Set a ohmmeter to the 2 housing pin Measure the 2 pin connected to Fuse M If the ohmmeter indicate below 0 1ohm fuse m is a good condition But infinitely great ohm Fuse M is disconnection How to Measure Sensor Set a ohmmeter to The 2housing pin Measure the 2 pin connected to Sensor If the ohmmeter indicate 11 at room temperature Sensor is not a defect When check the ohm at other tempera...

Page 38: ... resistance How to Measure Set a ohmmeter connect to The 2 housing pin Measure the 2 pin connected to Sheath Heater If the ohmmeter indicate V øV Watt R is good condition ex when watt 350w voltage 115v R 115 ø115 350 38Ω But the ohmmeter indicate infinitely great Sheath heater is disconnection Standard Sheath heater at all temperature Test Point 1 to 2 Ressult 34 42Ω 1 2 ...

Page 39: ... 39 1 2 3 4 7 8 5 6 10 3 Door Heater Assembly Function The heater is designed to prevent the raising dew from door How to Measure Standard Test Point 1 to 2 Ressult 2 3 2 9Ω ...

Page 40: ...emperature will rise How to Measure Damper Circuit extension Check the Standard Damper Test Points Red and Yellow Result 373 456Ω Test Points Blue and White Result 373 456Ω Check the resistance between connectors 1 3 and 2 4 It means check whether or not applying an electric current If there is resistance it means the damper not inferiority 1 Blue 1 Blue 2 Red 3 White 3 White 1 3 Check the 2 4 Che...

Page 41: ... and off moving plunger of door switch up and down How to Measure Switch Freezer Switch Refrigerator Check the resistance between connectors 1 2 and 3 4 It means check whether or not applying an electric current If there is resistance it means the switch not inferiority Standard Beep Beep Multimeter beep Switch F R Nomal Beep or 0Ω Push the button Plunger None Ω Button Plunger 1 2 3 4 3 4 2 1 1 2 ...

Page 42: ... assembly The lamp socket supply electric source to lamp also How to Measure Standard Check the resistance between connector of housing and connector of lamp socket It means check whether or not applying an electric current If there is resistance it means the lamp socket is not inferiority Test Points 1 to 2 and 3 to 4 Result 0Ω 1 2 3 4 ...

Page 43: ...l Number 4 Safety Approval Ex F C 7 5 L A N E 00 00 9 2003 5 13 0012 Series name DLF FA FB Operating Type A A Inverter E E Inverter Rated Voltage Frequency M 220V 50 60Hz N 115V 50 60Hz Efficiency version A 1st generation B 2nd generation Displacement ex 90 9 0cm3 stroke Application Category L LBP with R134a H HBP with R134a N LBP with R600a Buyer Code Model Code Line Serial No Date Year VVVF Vari...

Page 44: ...e increases every 0 8sec until maximum stroke length is reached about 3 min 15 sec Step 3 CVCF interval 180V 60Hz Step 1 Start up Half stroke interval for first 20 seconds Step 2 Ramp up Stroke increases until maximum stroke length is reached about 1 min 40 sec Step 3 VVVF interval target voltage and frequency controlled by Control Board signals FCT0 Stroke Trip Locked Piston Trip Current Trip IPM...

Page 45: ...h a multi tester There are two PCB located behind the PCB cover One is the main PCB and the other is the driver PCB the linear compressor E Inverter FC75LANE A Inverter FC90LANA Multi Tester Multi Tester E Inverter A Inverter IPM Voltage Check To ensure proper diagnosis make sure that the unit has been plugged in for at least 10 min To determine if the compressor is receiving the proper voltage ch...

Page 46: ...citor Spec 450V 18uF 5 Po Power Co Common N C No Connecting Compressor Winding Resistance Check 6 8 Ω Between Po and Co FC75LANE Po N C Co Capacitor Spec 550V 10uF 5 Po Power Co Common N C No Connecting Compressor Winding Resistance Check 6 8 Ω Between Po and Co 6 8 Ω 6 8 Ω Inf Inf NOTE Any Terminal to Ground should read Inf GN GND ...

Page 47: ...rly Seal liquid foods with wrap Put in foods after they have cooled down Don t open the door too often and close it firmly Condensation forms in the Exterior Case Check if the ambient temperature and humidity of the surrounding air are high Is there a gap in the door gasket Wipe moisture with a dry cloth It will disappear in low temperature and humidity Fill up the gap There is abnormal noise Is t...

Page 48: ...ing of the Refrigerant MOISTURE CLOG Cooling operation stops periodically Flowing sound of refrigerant is not heard and frost melts Lower than ambient temperature Cooling operation restarts when heating the inlet of the capillary tube CLOGGED BY DUST COMP RESSION Freezer and Refrigerator don t cool Low flowing sound of refrigerant is heard and frost forms in inlet only A little higher than ambient...

Page 49: ...Test Very Slow None Equalization Test Very Fast Fast Very Fast Inefficient Compressor Partial Restriction Complete Restriction Condenser Temperature Cap Tube Sound Yes No Air Low Side Leak Loss of Change Very Slow Faint Hotter than Normal None to Weak Room Temperature Compressor Not Pumping Trace of Oil Undercharge The equalization test is trying to restart a compressor using a start kit after it ...

Page 50: ...e by rotating ice ejection motor in normal and reverse direction and eject ice into the ice bucket if ice bucket is not full Conduct Ice Making Control after supplying water into the ice maker cube mould by operating water valve This is for refrigerator assembly line and service When ice making test switch is pressed it operates in the following steps initial ice ejection water supply control step...

Page 51: ...jection control is completed and ice maker mould is even 2 The quantity of water supplied is determined by DIP switch and time 3 If water supply quantity setting is changed while power is on water supplies for the amended time If DIP switch is changed during water supply water shall be supplied for the previous setting time But it will supply for the amended time from the next supply 4 When water ...

Page 52: ...al direction If there is no change in Hall IC signals within 1 minute after ice ejection motor operates ice ejection motor stops as ice ejection motor or hall IC is out of order 5 If ice ejection motor or Hall IC is abnormal ice ejection motor rotates in normal direction to exercise initial operation It resets the ice maker if ice ejection motor or Hall IC is normal 6 The mould stops for 1 second ...

Page 53: ...mould conditions Water shall be splashed if test switch is pressed before the water in the mould freezes Water shall be supplied while the mould returns to the horizontal conditions after ice ejection Therefore the problems of ice ejection returning to the horizontal conditions and water supply can be checked by test switch When test function performs normally buzzer sounds and water supply shall ...

Page 54: ...To activate this function you need to press the EXPRESS FREEZING key and the icon will turn ON This function will remain activated for 24 hours 13 1 2 How to Change the Temperature Mode to F C 1 The display temperature mode can be changed from F to C or C to F by pressing and holding the FRZ TEMP and the REF TEMP keys at the same time for over five seconds 13 1 4 How to s et the dis play mode and ...

Page 55: ...s produced 13 1 8 Defrosting removing frost 1 Defrosting starts each time the compressor running time reaches between 7 50 hours and 50 hours according to door open time 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 8 C or more If the sensor doesn t reach 8 C in 1 hours the defro...

Page 56: ...of defrosting sensor is 45 C or more when unit is newly purchased or when moved Initial power on Temperature of defrosting sensor is lower than 45 C during power outages or for service Reset to normal operation from test mode ORDERS Power ON Compressor ON Freezer fan ON in 0 5 sec Power ON Defrosting heater ON Defrosting heater OFF in 0 5 sec Compressor ON Freezer fan ON in 0 5 sec Pillar heater O...

Page 57: ...frigerator easy 2 When a defect occurs the buttons will not operate 3 When the defect CODE removes the sign it returns to normal operation RESET 4 The defect CODE shows on the refrigerator and freezer display Basic Model Defect code signs Defect code signs ERROR CODE on display panel ...

Page 58: ...hile an error code is displayed the test mode will not be activated Freezer Fan Variable RPM Check To check the variable rpm press and hold the WARMER keys of both the REF TEMP and FRE TEMP The fan speed will change low to high or high to low for 30 seconds before reverting to its original setting Demonstration Display MODE 1 To enter this mode raise either the Refrigerator or Freezer temperature ...

Page 59: ...616E 623B 619A 627B 623A 600A 600B 1 ICEMAKER PARTS ...

Page 60: ... 329B 405C 405F 405G 405D 405H B02 405I 282F 405H 405B 329A 332C 610C 405C 405F 103C 315A 315C 315B 106A 106A 313A 411A 500A 271D 145B S11 S11 406D B01 402A 207C S03 207A 315B 315C B04 120B 402A B02 249C 262B 249D S14 302B 400A 316B 408A 316A 310B 312A 300A 314A 317A 318A 304A 309B 329C 323B S20 420A 312C 262H 406B 404A 404B S14 410G 320A 290A 303A 105A 500H 503F 409B 170A 105D 407A S17 ...

Page 61: ... 3 CASE PARTS ...

Page 62: ... 4 CASE PARTS ...

Page 63: ... 5 FREEZER PARTS CAUTION Use the part number to order part not the position number 136A 132P 237C 133B 131A 133B 145F 133B 136B 133A 145C 136C ...

Page 64: ... 6 REFRIGERATOR PARTS CAUTION Use the part number to order part not the position number 141C 141B 161A 162A 145D 162B 146E 161C 151A 151B 161B 141D 154A 141A 141C 141B 141A 141C 141B 141A 141C 141B 141A ...

Page 65: ...part not the position number 243C 241D 241D 241E 241C 241A 241B 243D 243A 262E 262C 243B 262C 233B 231B B06 B06 244A B06 244A 231A 233A 212G B06 235A 203A 200A B06 212D B06 201A 249K 250A 249J 250B 249F 250B 249E 249P 250J 250K 241D 241D 241D 241E 312B ...

Page 66: ... 8 DOOR PARTS ...

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