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Kenmore 795.78402.800, Service Manual

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Kenmore 795.78402.800 Service Manual Download Page 20

5. CIRCUIT DIAGRAM

- 20 -

CON4

CON4

CON6

CON6

F

R

O

N

T

 H

E

A

T

E

R

WH/RD

BL/WH

WH/RD BL/WH

WH/BK

WH/BK

 LD, MQ COMP’

EG COMP’

N

BL

Cr

PTC

BK

L

O

L

P

*P.T.C STARTER OPTION

* ALTERNATIVE COMP’
 ACCESSORIES

COMBO KIT
(PTC+OLP)

BL

BO
BN
PR
WH

BK

F-LAMP

FD-HEATER

R-LAMPS

THERMOSTAT

FUSE-M

HEATER SHEATH

COMP' ACCESSORIES

Summary of Contents for 795.78402.800

Page 1: ...RE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL REFRIGERATOR SERVICE MANUAL R MODELS 795 78402 800 795 78403 800 795 78406 800 795 78409 800 795 78412 800 795 78413 800 795 78416 800 795 78419 800 ...

Page 2: ...ly 3 14 Auger motor cover 3 15 How to remove a door ice bin 3 16 How to insert a door ice bin 3 17 How to remove and reinstall the pull out drawer 3 18 Fan and fan motor disassembly method 3 19 Glide out drawer 3 20 Cover Valve 4 ADJUSTMENT 4 1 Compressor 4 2 PTC Starter 4 3 OLP Overload Protector 4 4 To remove the cover PTC 5 CIRCUIT DIAGRAM 6 TROUBLESHOOTING 6 1 Compressor and electrical compone...

Page 3: ...Leakage 0 5 mA Maximum Ground Path Resistance 0 14 Ohms Energy Consumption 23 cu ft 538 kWh yr Energy Star 1 4 NO LOAD PERFORMANCE CONTROL POSITION MID MID And Ambient of 70 F 90 F Fresh Food F 33 F to 41 F 33 F to 41 F Frozen Food F 4 F to 4 F 4 F to 4 F Percent Running Time 35 45 50 F 70 F 1 5 REFRIGERATION SYSTEM Minimum Compressor Capacity Vacuum 21 MIN Minimum Equalized Pressure 70 F 49 PSIG ...

Page 4: ... 34 1 4 in Depth w Handles B 31 3 4 in Depth w o Door C 27 7 8 in Depth Total with Door Open D 46 1 2 in Height to Top of Case E 68 3 8 in Height to Top of Door Hinge F 69 3 4 in Width G 35 3 4 in Width door open 90 deg w o handle H 39 1 4 in ...

Page 5: ...rts and features Page references are included for your convenience NOTE This guide covers several dierent models The refrigerator you have purchased may have some or all of the items listed below The locations of the features shown below may not match your model A B C F G H I J Durabase Freezer light Divider Ice Bin Water Tank Cover Snack Pan Egg Box Dairy Bin Can Rack L K M N O P Q E D Ice Bucket...

Page 6: ...onnect door switch wire 2 Pull out the tube 4 CAUTION If a tube end is deformed or worn out cut the damaged portion away Disconnect wire harness 5 Remove the ground screw 6 Loosen screws 7 and lift off the top hinge 8 CAUTION When removing top hinge be careful that the door does not fall forward Right Door Loosen the cover screw 1 Disconnect door switch wire 2 Place the door on a non scratching su...

Page 7: ...g sides of door Door Gasket Replacement 1 Insert gasket bracket clips 1 Insert gasket bracket edge beneath door frame edge 2 Turn upper gasket bracket spring so that the spring ends are in the door channel 3 Push in clip until you hear it snap securely into place 4 Push in remaining clip until you hear it snap securely into place Note Make sure that no part of gasket bracket edge protrudes from be...

Page 8: ...ing as shown 3 Insert additional snap rings until the doors are aligned Three snap rings are provided with unit 3 3 FAN AND FAN MOTOR EVAPORATOR 1 Remove the freezer shelf If your refrigerator has an icemaker remove the icemaker first 2 Remove the plastic guide for slides on left side by unscrewing phillips head screws 3 Remove the grille by pulling the grille fan forward 4 Remove the Fan Motor as...

Page 9: ... Tie Wrap Figure 13 3 5 LAMP 3 5 1 Refrigerator Compartment Lamp 1 Unplug Refrigerator or disconnect power at the circuit breaker 2 If necessary remove top shelf or shelves 3 Using a flat instrument gently pry the cover loose in the front as shown Rotate downward to remove rear tabs 4 Make sure the bulbs are cool to the touch Turn bulbs counterclockwise to remove 5 Assemble in reverse order by sna...

Page 10: ...bly by making a gap between a display frame assembly and door with a flat blade screwdriver and pulling it forward The cover dispenser is attached with a hook CAUTION When replacing the dispenser cover in the reverse order of removal be careful that the lead wire does not come out and the water tube is not pinched by the dispenser cover as shown in the picture below 3 9 DISPLAY PWB REPLACEMENT 1 P...

Page 11: ...onnect the wire harness 3 Remove the funnel 4 Replace in reverse order 3 12 ICE CORNER DOOR REPLACEMENT 1 Loosen the front screw as shown in the picture 2 Lift up the hinge with one hand 3 Pull out the Ice Corner Door with the other hand 3 13 ICEMAKER ASSEMBLY 1 Loosen two screws as shown in the first picture 2 Disconnect the wire harness ground screw replace theIcemaker assembly in the reverse or...

Page 12: ...the 5 stainless screws holding the auger motor cover shown in the picutres below 2 Grip the bottom of motor cover assembly and pull out it 3 Disconnect wire harness of motor cover assembly There is a auger motor on the back as shown in the picture 12 Auger Motor ...

Page 13: ... 2 Lift the lower part slightly 3 T ake the Ice Bin out slowly 3 16 HOW TO INSERT A DOOR ICE BIN 1 Insert the Ice Bin slightly tilting it to avoid touching the Icemaker especially ice maker lever Insert the ice bucket carefully avoid contacing the automatic shut off arm 13 1 2 ...

Page 14: ...e 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 B...

Page 15: ...l align itself by pushing the rails all the way into the freezer section Pull the rails back out to full extension Step 6 Reinstall the two screws into the guide rails one from each side Step 3 Insert the rail into the left side gear and insert the gear into the clip Step 5 Reinstall the freezer door by inserting the rail tabs into the guide rail Step 7 Reinstall the lower basket and close the fre...

Page 16: ...l care for the following details 1 Be careful not to bend the tube during assembly 2 Press the WATER DISPENSER button until water pours out and check for leakage in the CONNECTOR TUBE It differs by the water pressure but usually takes about 2 minutes until water pours out MOTOR COVER FAN ASSEMBLY MOTOR 16 3 19 GLIDE OUT DRAWER To remove lift basket up and pull out straight out 2 1 To Install pull ...

Page 17: ...elease 3 Release hook a b 4 Turn the cover valve 120 as shown in the picture then release it b Assemble 1 Insert the cover valve as shown in the picture push to insert may need force 2 Insert hook a b 3 Push to the right to insert the cover valve 4 Then push to inside to assembly a b a 17 ...

Page 18: ...phase induction motor The starting operation the PTC allows current flow to both the start winding and main winding 4 2 3 PTC Applied Circuit Diagram Starting Method for the Motor 4 2 4 Motor Restarting and PTC Cooling 1 It requires approximately 5 minutes for the pressure to equalize before the compressor can restart 2 The PTC device generates heat during operation Therefore it must be allowed to...

Page 19: ... COVER PTC 1 Remove the Cover Back M C 2 Disconnect two housing upper side of comp connected in 3 Loosen two screws on comp base 4 Use a L shaped flap tool to pry off the cover 5 Assembly in reverse order of disassembly Part Customer part number Lot code date code 330 FBYY S1 BOX98 12345678 Physical termination part number Electrical characteristics part number No Name Base phenolic UL 94 V 0 rate...

Page 20: ...N6 CON6 FRONT HEATER WH RD BL WH WH RDBL WH WH BK WH BK LD MQ COMP EG COMP N BL Cr PTC BK L OLP P T C STARTER OPTION ALTERNATIVE COMP ACCESSORIES COMBO KIT PTC OLP BL BO BN PR WH BK F LAMP FD HEATER R LAMPS THERMOSTAT FUSE M HEATER SHEATH COMP ACCESSORIES ...

Page 21: ...y needs to be checked by an electrician Replace Compressor Supply voltage rating with 10 Applied voltage isn t in acceptable range 115V 10 Remove PTC Starter from Compressor and measure voltage between T erminal C of Compressor and T erminal 5 or 6 of PTC Check resistance between M C S C and M S in Motor Compressor Check resistance of two terminals in PTC Starter Check resistance of two terminals ...

Page 22: ...apacity Replace indicated component Advise customer that the Power supply needs to be checked by an electrician Replace indicated component Cause Check voltage at starting devices Check current flowing in sub coil of Compressor Check rating of OLP Fan motor doesn t run Heavy frost buildup on EVAPORATOR Wire is open or shorted Coil is shorted or open Open Open Replace Defrost Heater Replace indicat...

Page 23: ... high Is there a gap in the door gasket Is the unit positioned in a firm and even place Are any unnecessary objects placed in the back side of the unit Check if the Drip Tray is not firmly fixed Check if the cover of the compressor enclosure in the lower front side is taken out Check if the door gasket is dirty with an item like juice Is the refrigerator level Is there too much food in the refrige...

Page 24: ...or don t in inlet only temperature The capillary tube is faulty cool normally WHOLE Freezer Flowing sound of refrigerant Equal to ambient Normal discharging of the CLOG compartment and is not heard and frost isn t temperature Refrigerant Refrigerator don t cool formed MOISTURE Cooling operation Flowing sound of refrigerant Lower than Cooling operation restarts CLOG stops periodically is not heard ...

Page 25: ...ial Very Fast Inefficient Compressor Partial Restriction Complete Restriction Equalization Test Condenser Temperature None Very Fast Very Slow Very Slow Hotter than Normal Air Low Side Leak Loss of Change Compressor Not Pumping Cap Tube Sound Room Temperature Trace of Oil Undercharge Leak Yes No Faint Fast None to Weak The equalization test is trying to restart a compressor using a start kit after...

Page 26: ...its until water becomes ICE after starting the icemaking operation Runs MOTOR to drop ice from the tray into the ICE BIN During harvest mode check if the ice bin is full Performs Ice Making Mode after supplying water by operating the SOLENOID in ICE VALVE To operate LINE and SERVICE press and hold the Fill Key for 3 seconds The icemaker will run through 3 stages Harvest Fill Icemaking Reaches Star...

Page 27: ...ice in the ice storage bin while rotating with the EJECTOR A Ice storage bin is full The EJECTOR stops heater off B Ice storage bin is not full The EJECTOR rotates twice to open for ice If the EJECTOR does not rotate once within 5 minutes in B mode separate heater control mode starts operating to prevent the EJECTOR from being constrained It is recommended that the user open for ice to return to n...

Page 28: ...pre test setting Diagnosis TABLE 7 3 DEFECT DIAGNOSIS FUNCTION 7 3 1 ERROR CODES shown on Ice Maker water supply control panel 28 STAGE ITEMS INDICATOR REMARKS 1 2 3 4 5 6 HEATER MOTOR HALL IC I HALL IC II VALVE Reset Five seconds after heater starts a heater will go off if the temperature by sensor is higher than 10 C Five seconds after heater starts you can confirm that a motor is moving Check i...

Page 29: ...e display the dispenser and the control panel press and hold the LOCK button for 3 seconds The lock indicator Light is turn ON 3 The LOCK button is the only control feature that remains active in the locked state The buzzer sound other control buttons and the dispenser are deactivated 4 T o release from the locked state press and hold the LOCK button again for 3 seconds 8 1 4 Filter condition disp...

Page 30: ... for Ultra Ice and when refrigerator is overloaded Standard speeds is used for general purposes 3 T o improve cooling speed the RPM of the freezer fan motor change from normal speed to high 4 High speed 2700RPM Initial power on or load corresponding operation Ultra Ice Normal speed 2400RPM Door open conditions 5 Fan motor stops when refrigerator open 8 1 9 Cooling Fan Motor 1 The cooling fan is sw...

Page 31: ... 3 If Ultra Ice is pressed during defrost Ultra Ice LED is on but this function will start seven minutes after defrost is completed and it shall operate for three hours 4 If Ultra Ice is selected within seven minutes after compressor has stopped the compressor compressor delays seven minutes shall start after the balance of the delay time 5 The fan motor in the freezer compartment runs at high spe...

Page 32: ...such as ding will sound 3 When defect is repaired the defect code is removed and refrigerator returns to normal operation RESET 4 The Defect code is shown on the Display LED check function If simultaneously pressing Ultra Ice button and Frz Temp for a second display LED graphics on If releasing the button the LED graphic displays the previous status 32 determinated by how often and how long the do...

Page 33: ... motor Poor motor hooking to wires of fan contact of structures to fan snapping or short circuit of Lead wires 8 Failure of BLDC Fan Motor for Ice Maker at Freezing compartment Er IF If there is no fan motor sinal for more than 114sec in operation fan motor Poor motor hooking to wires of fan contact of structures to fan snapping or short circuit of Lead wires 9 Failure of Communication between dis...

Page 34: ...on Test 34 MODE OPERATION FUNCTION REMARKS TEST1 TEST2 TEST3 RESET Push T est Switch in the main Board once Push TEST Switch once in TEST MODE1 Push TEST Switch once in TEST MODE 2 Push TEST Switch once in TEST MODE3 1 Continuous operation of the COMPRESSOR and the Freezer fan 2 Stepping DAMPER OPEN 3 Defrosting HEATER OFF 4 DISPLAY LED all ON 1 Continuous operation of the COMPRESSOR and the Freez...

Page 35: ...8 2 PCB FUNCTION 8 2 1 Power Circuit 1 Power is supplied to the control board at pin1 and 3 of connector 1 35 ...

Page 36: ...Pin4 Con3 Pin7 Lamp F 115 VAC Con3 Pin4 Con3 Pin9 Lamp R Output Voltage Pin Number Pin Number Circuit 115 VAC Con3 Pin4 Con2 Pin1 Ice Maker 115 VAC Con3 Pin4 Con3 Pin8 L Door Heater 115 VAC Con3 Pin4 Con3 Pin12 Compressor 115 VAC Con3 Pin4 Con3 Pin10 Defrost Heater 115 VAC Con3 Pin4 Con3 Pin7 Lamp F 115 VAC Con3 Pin4 Con3 Pin9 Lamp R Output Voltage Pin Number Pin Number Circuit To measure outputs ...

Page 37: ... following components Freezing compartment fan Con4 Pin1 Con4 Pin2 13 VDC 15 VDC 2 VDC or less Machine compartment fan Con4 Pin7 Con4 Pin8 13 VDC 15 VDC 2 VDC or less Icing compartment fan Con4 Pin4 Con4 Pin5 13 VDC 15 VDC 2 VDC or less FAN PIN NUMBER PIN NUMBER MOTOR ON MOTOR OFF OUTPUT VOLTAGE ...

Page 38: ...ezer Refrigerator Door Measurement Location Pin 10 11 of con4 Ref Door Pin 5 6 of con6 Fre Door TEMPERATURE RESISTANCE OF FREEZER Icing RESISTANCE OF REFRIGERATOR SENSOR DEFROST SENSOR ROOM SENSOR 20 ºC 4 F 22 3 K 77 K 15 C 5 F 16 9 K 60 K 10 C 14 F 13 0 K 47 3 K 5 C 23 F 10 1 K 38 4 K 0 C 32 F 7 8 K 30 K 5 C 41 F 6 2 K 24 1 K 10 C 50 F 4 9 K 19 5 K 15 C 59 F 3 9 K 15 9 K 20 C 68 F 3 1 K 13 K 25 C...

Page 39: ...ce 8 2 5 Dispenser Drive Circuit 39 Circuit Pin Number Pin Number Output Voltage Auger Motor Con2 Pin5 Con2 Pin7 115 VAC Solenoid Cube Con2 Pin3 Con2 Pin7 115 VAC Pilot Water Valve Con2 Pin1 Con2 Pin7 115 VAC Solenoid Dispenser Con3 Pin9 Con3 Pin3 115 VAC Heater Con3 Pin5 Con3 Pin3 115 VAC CON1 CON 4 N CO 2 N3 CO To perform the measures CON1 MUST BE connected To see connector 6 picture refer to pa...

Page 40: ...e surface temperature of the condenser pipe USE TEST MODE1 forced COOLING Check the amount of frost sticking on the EVAPORATOR of the Refrigerator SENSOR Check the seal when the door is closed POWER SOURCE is poor Applied voltage error CONNECTOR connection is poor TRANS FUSE is open COMPRESSOR locked or blocked OLP PTC is poor COMPRESSOR RELAY is poor THE CONNECTING WIRE is poor Refrigerant leakag...

Page 41: ...DEFROSTING Check DRAIN PIPE Make sure that DEFROST SENSOR is connected Make sure that FREEZER REFRIGERATOR DOOR is closed FAN MOTOR is poor Passage of cool air is blocked EVA frozen Door liner damaged HEATER disconnection TEMPERATURE FUSE disconnection Connection is poor DEFROST SENSOR is poor HEATER RELAY is poor DRAIN PIPE is blocked Connection is poor DOOR does not close properly Make sure the ...

Page 42: ...8 4 MAIN PWB ASSEMBLY AND PARTS LIST 8 4 1 Main PWB Assembly 42 ...

Page 43: ...8 4 2 Dispenser Drive PWB Assembly 43 Connector1 Connector4 Connector2 Connector3 ...

Page 44: ...5B 305B 305C 305C 307A 308A 309A 310A 312A 314A 315A 323B 327A 317A 318A 319A 319C 328B 329C 329A 332A S32 407A 401A 404A 405A 405B 405B 405C 405F 319E 405G 406B 409B 409B 410G 411A 412D 418A 420A 501A 501F 610A 610A 619B S38 903A 903B 903B 903D 903E S01 B01 B01 9 EXPLODED VIEW REPLACEMENT PART LIST CASE PARTS Caution Use the part number to order part not the position number 44 EV ...

Page 45: ...131A 136A 136B 145C 145F 237C 248E 248F 45 FREEZER PARTS Caution Use the part number to order part not the position number EV ...

Page 46: ... 140B 140B 140D 140D 140D 140E 140E 140E S24 S24 S24 S24 S24 S24 143E 143E 143E 142D 143F 142E 140B 151A 151A 154A 155B 167B 170A 305D 46 REFRIGERATOR PARTS Caution Use the part number to order part not the position number EV ...

Page 47: ...H 237A 249M 250B 250B 250A 262E 262E 241A 241B 241C 243A 243A 243B 243B 249C 249D 249F 249E 249J 249K 249L 281D 281D 281G 281G 281H 281H 286A 286A 313A 313A 410C B04 B04 616J 603C 603D 619A 615A 631A 241G 241D 241D 241D S27 S27 DOOR PARTS Caution Use the part number to order part not the position number 47 Optional part EV ...

Page 48: ...275A 276A 276B 278A 278B 278C 278D 279A 279B 279D 279E 280B 280C 281F 402C 500B 501B 405H 48 DISPENSER PARTS Caution Use the part number to order part not the position number EV ...

Page 49: ...600A 600B 606A 614A 630A 630B 630C 630F 630G 630H 630E 630D 630K 630L 630M 630N 630J 49 ICE MAKER ICE BANK PARTS Caution Use the part number to order part not the position number EV ...

Page 50: ...616H 617B 617A S32 623B 627A 616K 616A 625A S31 623C 616D 603C 50 VALVE WATER PARTS Caution Use the part number to order part not the position number EV ...

Page 51: ...7 Ice Maker Assembly Kit 230B ADC52734205 Door Assembly Refrigerator Left 600B AKC37000402 Bucket Assembly Ice 231A ADD36429806 Door Foam Assembly Refrigerator 603B 4931JA3005B Holder Assembly Bracket 231B ADD36429701 Door Foam Assembly Refrigerator 603C 4930JA3091A Holder Bracket 233A 4987JJ2003E Gasket Assembly Door 603C 4930JA3091A Holder Bracket 233B 4987JJ2003G Gasket Assembly Door 603C 4930J...

Page 52: ...230B ADC52734208 Door Assembly Refrigerator Left 600B AKC37000402 Bucket Assembly Ice 231A ADD36429810 Door Foam Assembly Refrigerator 603B 4931JA3005B Holder Assembly Bracket 231B ADD36429704 Door Foam Assembly Refrigerator 603C 4930JA3091A Holder Bracket 233A 4987JJ2003N Gasket Assembly Door 603D 4930JA3093A Holder Bracket 233B 4987JJ2003P Gasket Assembly Door 606A MCK41991601 Cover Motor 233C A...

Page 53: ...ssembly PCB 230A ADC52734309 Door Assembly Refrigerator Right 503D 3110JJ1021A Case Display 230B ADC52734209 Door Assembly Refrigerator Left 600A AEQ36756907 Ice Maker Assembly Kit 231A ADD36429812 Door Foam Assembly Refrigerator 600B AKC37000402 Bucket Assembly Ice 231B ADD36429705 Door Foam Assembly Refrigerator 603B 4931JA3005B Holder Assembly Bracket 233A 4987JJ2003N Gasket Assembly Door 603C ...

Page 54: ...B Stopper Handle 503D 3110JJ1021A Case Display 230A ADC52734308 Door Assembly Refrigerator Right 600A AEQ36756907 Ice Maker Assembly Kit 230B ADC52734208 Door Assembly Refrigerator Left 600B AKC37000402 Bucket Assembly Ice 231A ADD36429810 Door Foam Assembly Refrigerator 603B 4931JA3005B Holder Assembly Bracket 231B ADD36429704 Door Foam Assembly Refrigerator 603C 4930JA3091A Holder Bracket 233A 4...

Page 55: ...20A Cover Assembly PCB 212J 4620JJ3007B Stopper Handle 503D 3110JJ1021A Case Display 230A ADC52734305 Door Assembly Refrigerator Right 600A AEQ36756907 Ice Maker Assembly Kit 230B ADC52734205 Door Assembly Refrigerator Left 600B AKC37000402 Bucket Assembly Ice 231A ADD36429806 Door Foam Assembly Refrigerator 603B 4931JA3005B Holder Assembly Bracket 231B ADD36429701 Door Foam Assembly Refrigerator ...

Page 56: ...1020A Cover Assembly PCB 212J 4620JJ3007B Stopper Handle 503D 3110JJ1021A Case Display 230A ADC52734306 Door Assembly Refrigerator Right 600A AEQ36756907 Ice Maker Assembly Kit 230B ADC52734206 Door Assembly Refrigerator Left 600B AKC37000402 Bucket Assembly Ice 231A ADD36429807 Door Foam Assembly Refrigerator 603B 4931JA3005B Holder Assembly Bracket 231B ADD36429702 Door Foam Assembly Refrigerato...

Page 57: ...D 3110JJ1021A Case Display 231A ADD36429812 Door Foam Assembly Refrigerator 600A AEQ36756907 Ice Maker Assembly Kit 231B ADD36429705 Door Foam Assembly Refrigerator 600B AKC37000402 Bucket Assembly Ice 233A 4987JJ2003N Gasket Assembly Door 603B 4931JA3005B Holder Assembly Bracket 233B 4987JJ2003P Gasket Assembly Door 603C 4930JA3091A Holder Bracket 233C ACQ36835601 Cover Assembly Front 603C 4930JA...

Page 58: ...D 3110JJ1021A Case Display 231A ADD36429807 Door Foam Assembly Refrigerator 600A AEQ36756907 Ice Maker Assembly Kit 231B ADD36429702 Door Foam Assembly Refrigerator 600B AKC37000402 Bucket Assembly Ice 233A 4987JJ2003F Gasket Assembly Door 603B 4931JA3005B Holder Assembly Bracket 233B 4987JJ2003H Gasket Assembly Door 603C 4930JA3091A Holder Bracket 233C ACQ36835601 Cover Assembly Front 603C 4930JA...

Page 59: ...JUL 2008 ...

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