Bosch Nexxt Premium WFMC6400UC Training Manual Download Page 18

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1st Edition/Revision 6 (2/2/04)

4. Unbalanced Load Sensor

•

Accurate measuring of unbalance by

deviation of spin speed and slow down

time of drum

•

Infinite adapting

of spin speeds

•

Compensates reducing of spin speeds by

prolonging spinning times

•

Will attempt up to 15 times to redistribute a load

Advantages:

•

Reduction of noise

•

Better stability of machine

•

Good spinning results with big unbalances

2-step detection

Operation

Sensors (6)

Summary of Contents for Nexxt Premium WFMC6400UC

Page 1: ...1st Edition Revision 6 2 2 04 WFMC Washer Training Program WFMC Washer Training Program 1 WFMC WASHER TRAINING MANUAL ...

Page 2: ...r Training Program Features and Benefits Features and Benefits Product Description Product Description Warranty Warranty Installation Installation Operation Operation Disassembly Disassembly Reassembly Reassembly Wiring Diagram Wiring Diagram Service Tips Service Tips 2 ...

Page 3: ...tar rated Energy Star rated Stainless steel drum Stainless steel drum won t rust is gentle to won t rust is gentle to clothes clothes Uses little water Uses little water 3 3 Tier water fill for fast equal water fill Tier water fill for fast equal water fill 180 door opening 180 door opening Up to 5 rinses Up to 5 rinses Suds sensing Suds sensing rinses out suds leaving no soap film rinses out suds...

Page 4: ...igital clock am pm format Digital clock am pm format Real time cycle finish Real time cycle finish displays actual time of day cycle displays actual time of day cycle stops stops Real time delay Real time delay enter actual time of day for wash to end enter actual time of day for wash to end Reduced ironing Reduced ironing Interactive language display Interactive language display choose desired la...

Page 5: ...ess Delicates Delicates Hand Wash Hand Wash settings settings 180º door opening 180º door opening Stainless steel inner drum Stainless steel inner drum Durable Durable Polinox Polinox outer drum outer drum Power Wash Power Wash WFMC32 WFMC32 Bleach Bleach Rinse Plus Rinse Plus Reduced Ironing Reduced Ironing WFMC64 WFMC64 buttons buttons Adjustable spin speeds Adjustable spin speeds Product Descri...

Page 6: ...er comes first 1 Year Full Limited Warranty Bosch will repair or replace free of charge any component part that proves defective under conditions of normal home use labor and shipping costs included Warranty repair service must be performed by an authorized Bosch Service Center 2 Year Limited Warranty Bosch will provide replacement parts free of charge for any component part that proves defective ...

Page 7: ...factory serial to FD for warranty use 1st 2 digits show factory 85 New Bern 3rd digit shows year 1 2003 4th 5th digits show month built 08 August So serial starting with 85308 400126 washer built New Bern with FD 8308 000126 Model WFMC6400UC 01 Serial FD 8308 To find when the product type was built add 20 to the 1st two digits to get the year 83 20 103 product type was built in 2003 The last two d...

Page 8: ...1st Edition Revision 6 2 2 04 Installation Installation Reprint of Installation Instructions 1 Reprint of Installation Instructions 1 8 NOTE Be sure to follow all national local codes ...

Page 9: ...nstallation Reprint of Installation Instructions 2 Reprint of Installation Instructions 2 HINT To quickly remove shipping transport bolts use a 13mm socket wrench HINT To avoid damaging washer don t move it while the feet leveling legs are extended ...

Page 10: ...for future shipment Installation Installation Reprint of Installation Instructions 3 Reprint of Installation Instructions 3 HINT Cold hot water connections are clearly marked on the rear of the washers HINT To eliminate possibility of leaking don t overtighten fittings Teflon tape can also be used on all threads ...

Page 11: ...1st Edition Revision 6 2 2 04 WFMC3200UC WFMC6400UC Operation Operation Fascia Panels Fascia Panels 11 ...

Page 12: ...04 Both have Regular Cotton Permanent Press Delicates Hand Wash Temperature Boost Rinse Plus Bleach settings WFMC6400UC WFMC3200UC Cycle Selector Knob Digital Display Special Wash Buttons Operation Operation Controls Controls 12 ...

Page 13: ...C3200UC During the beginning of the1st rinse spin phase the washer determines if there are excessive suds and automatically adds 2 rinses if necessary This is accomplished via the pressure switch and the motor synchronization system 3B Continuous Suds Sensor WFMC6400UC Checking the pumping out phase of the main wash the beginning of the 1st rinse spin phase and the actual spin speed vs the program...

Page 14: ...does not provide more water Analog Pressure Switch WFMC6400UC Precise measuring of actual water level Accurate load detection Control of the pump noise reduction Time reduction no pumping when empty BENEFITS Continuous adjustment of wash times Water and energy consumed varies according to load size 1A 1B Load Dynamic Load Sensors Mechanical Pressure Switch Analog Pressure Switch Operation Operatio...

Page 15: ...es Together with the pressure switch there is a continuous adjustment of wash time water and energy in relation to the load size The flow meter works independently of water pressure BENEFITS Minimizes water consumption Exact Load Detection Superior Cleaning Performance An internal water clock monitors water inflow via soak compartment Ensures exact control of water inlet valves always right amount...

Page 16: ...sors 4 16 2 Digital Temperature Sensor Both models are equipped with an Electric Heater and Temperature Sensor NTC to deliver guaranteed wash temperatures NOTE Compare with competition washers which only have heaters in top of the line models Heater Thermostat NTC ...

Page 17: ...e cancelling of 1st rinse spin Detection during 1st rinse spin immediate interuption of spin insertion of one or two additional rinses reduced agition during additional anti foam rinse Detection during any other rinse spin immediate interuption of spin reduced agitiation in following rinse cycle All subsequent rinse spin cycles are always rechecked for suds WFMC6400 WFMC6400 WFMC3200 WFMC6400 Oper...

Page 18: ...own time of drum Infinite adapting of spin speeds Compensates reducing of spin speeds by prolonging spinning times Will attempt up to 15 times to redistribute a load Advantages Reduction of noise Better stability of machine Good spinning results with big unbalances 2 step detection Operation Operation Sensors 6 Sensors 6 18 ...

Page 19: ...max 15 trials III IV II I load distribution unbalance Spin speed rpm spinning profile good small 1200 max I uneven medium 1000 reduced II bad big 800 low III none dangerous no spinning IV After 4 attempts After 7 attempts After 14 attempts 2 step detection Operation Operation Sensors 7 Sensors 7 19 ...

Page 20: ...s are no longer collected in the drain pump trap The drain pump trap is only meant to be cleared by servicers NOTE There s no provision to drain water manually from drain pumps like earlier models HINT To remove the drain pump access cover insert a pointed object or tool into the hole push in to release the latch and rotate the cover clockwise Current production pumps are beige color earlier pumps...

Page 21: ...e of inner drum flows toward front of paddles and exits holes in front of paddles onto clothing in front of washer Directing water away from door seals Drums are tilted to direct water to the back of the drum and away from the door seal Door glass is shaped to direct water away from the door seal Paddles insure clothing at front of dryer get wet despite tub being tilted toward the back Operation O...

Page 22: ... panel to access control module dispenser remove 4 T 20 Torx front side screws and lift panel up Caps over screws can be removed using fingernails or a sharp knife take care not to scratch fascia panel or caps When reassembling panels tuck rear tabs under top panel 1st Knobs are permanently attached to panels and cannot be removed ...

Page 23: ...tabs together L R Pry out 3 inner tabs all outer tabs HINT Don t remove the wire holders clip off wire ties instead Carry extra wire ties to reattach wire harnesses HINT The knob does NOT have to be removed to remove the control module The module lifts off completely from the panel knob buttons HINT Don t force modules out from fascia panels to avoid breaking plastic parts If modules don t come ou...

Page 24: ...anel screws T 20 screws Top panel removed Rear panel removed Rear panel T 20 screws To remove rear panel to access drive motor and rear of drum remove 18 T 20 screws There s no need to remove the top rear panel with H C stampings To remove top panel for easier parts access remove 3 T 20 screws and slide panel to rear of washer ...

Page 25: ... 6 2 2 04 Disassembly Disassembly Drum Front Panel 1 Drum Front Panel 1 25 Remove hinge cover screws Remove hinge screws Remove door seal spring Remove door latch screws Carefully remove front shield Removing front shield ...

Page 26: ... front panel mounting tabs HINT Removing front panel at this point will make removing front counterweights easier HINT Front panels are mounted using six 6 plastic tabs three 3 on each side Lift front panels up to remove them When reassembling front panels carefully align tabs and don t use excessive force to avoid breaking tabs HINT Most washer screws require T 20 Torx screwdrivers Remove front p...

Page 27: ...mbly Disassembly Drum Front Panel 3 Drum Front Panel 3 27 Remove door latch Door latch manual release Top counterweight must be removed 13mm screws Remove counterweight screws Slide out counterweight Note counterweight bushing slots in tub ...

Page 28: ...Disassembly Drum Front Panel 4 Drum Front Panel 4 28 13mm screws Remove front counterweight screws Removing counterweight screws Note counterweight screw bushings in tub Remove door seal Disconnect main water inlet hose Disconnecting main water inlet hose ...

Page 29: ... 04 Disassembly Disassembly Drum Front Panel 5 Drum Front Panel 5 29 Disconnect dispenser hoses Disconnect water inlet valve hoses Disconnecting hot water valve hose Remove dispenser screws Remove dispenser Disconnect drain hose ...

Page 30: ... 04 Disconnect sump hose clamp Disassembly Disassembly Drum Front Panel 6 Drum Front Panel 6 30 Disconnect sump hose Disconnect sump hose clamp Remove sump Remove drain pump NOTE Old style drain pump shown not used in production ...

Page 31: ... Drum Front Panel 7 31 Disconnect hoses NOTE Old style dampers shown not used in production Disconnect dampers Remove belt from tub NOTE Old style dampers shown not used in production Disconnect motor wires 10mm bolts Remove drum drive motor Showing drum drive motor mounts ...

Page 32: ...dition Revision 6 2 2 04 Remove tub rear spring Disassembly Disassembly Drum Front Panel 8 Drum Front Panel 8 32 Remove pulley wheel 13mm bolt Remove tub ground wire Tub ground wire washer Remove tub washer ...

Page 33: ...Disconnect locking heater wires Disassembly Disassembly Drum Front Panel 9 Drum Front Panel 9 33 Remove heater Disconnect NTC wires 10mm bolt Remove motor control Disconnect motor control wire harnesses Unscrew motor control screws ...

Page 34: ...dampers from tub and slip belt off of tub 5 Remove tub through rear of washer 6 Remove 18 T 25 Torx screws holding front rear tubs together HINT When installing outer tub bolts screw them in by hand onto the first thread Do not overtighten or cross thread them NOTE Rear drum bearings are factory press fit into rear outer tubs and cannot be removed or serviced Removing tub screws Damper Removing fr...

Page 35: ... of tub Showing drum and tub parts Bearing and drum shaft Disassembly Disassembly Drum Outer Drum Tub Dampers 2 Drum Outer Drum Tub Dampers 2 35 NOTE Rear drum bearings are factory press fit into rear outer tubs and cannot be removed or serviced ...

Page 36: ...pull motor out toward rear of washer WARNING The drum drive motor tub are grounded through the motor control Since the tub is plastic and the motor is isolated from the frame Its critical the ground leads from the tub drive motor motor control are connected properly Drum drive motor Rear tub spring 10mm bolts Disassembly Disassembly Drum Drive Motor Drum Drive Motor 36 ...

Page 37: ...e four rubber feet HINT Drain pumps are mounted on four rubber feet to dampen vibration noise To remove drain pumps carefully slide them toward rear of washers To install them carefully insert all four feet into notches in washer base then slide them forward Drain pump Note four mounting feet Drain pump Current production pumps are beige color earlier pumps were black Disassembly Disassembly Drain...

Page 38: ...ater Valves RFI Filter 38 and that s all there is to taking apart the washers Water valves HINT Water valves are bent and snapped into place When removing valves take care not to break off plastic pieces Hot water valve Unscrew RFI filter from rear of dryer RFI filter T 20 screws ...

Page 39: ...s power Earth ground 10ºC 50ºF 36 44kW 20ºC 68ºF 22 8 27 4kW 30ºC 86ºF 14 8 17 5kW 40ºC 104ºF 9 8 11 5kW 50ºC 122ºF 6 6 7 7kW 60ºC 140ºF 4 6 5 3kW 66ºC 151ºF 3 73 4 29kW 73ºC 163ºF 2 94 3 36kW 86ºC 187ºF 1 93 2 19kW WFMC3200 Wiring Diagram WFMC3200 Wiring Diagram ...

Page 40: ...6400 Wiring Diagram DEFINITIONS Mains power Earth ground 10ºC 50ºF 36 44kW 20ºC 68ºF 22 8 27 4kW 30ºC 86ºF 14 8 17 5kW 40ºC 104ºF 9 8 11 5kW 50ºC 122ºF 6 6 7 7kW 60ºC 140ºF 4 6 5 3kW 66ºC 151ºF 3 73 4 29kW 73ºC 163ºF 2 94 3 36kW 86ºC 187ºF 1 93 2 19kW Power input ...

Page 41: ...ter rated 1000W Hot cold water inputs 3 4 NPT 14 5 145 psi 2 2 gal 8 l minute 5 2 gal 19 8 l minute Three concrete vibration dampeners one top two front Uses NEMA 5 15P 120V 15A 3 wire plug Spin speeds 400 1000 RPM WFMC3200 or 400 1200 RPM WFMC6400 Uses Polinox outer drum quieter dent resistant compared to ss UL listed U S Canada ...

Page 42: ...Net weight 216 lbs 98 kg Drum capacity volume 3 1 ft3 88 l 17 6 lbs 8 kg for regular cotton Pumping height max 8 2 4 m Dimensions 36 9 H x 27 W x 30 2 D 93 7 cm x 68 7 cm x 76 7 cm Energy appendix J rating EF 4 0 uses 284 kwh yr Water usage 8 5 gal ft3 WFMC 3200 7 5 gal ft3 WFMC 6400 Noise level wash 60 dB Noise level max spin 70 dB WFMC3200 72 dB WFMC6400 ...

Page 43: ...sh temperatures 155ºF Sanitary 150ºF Temp boost 120ºF 125ºF Hot 90ºF 95ºF Warm 60ºF 70ºF Cold Door opening 16 41 cm NTC R1 ratings 36 44 kΩ 10ºC 50ºF 22 8 27 4 kΩ 20ºC 68ºF 14 8 17 5 kΩ 30ºC 86ºF 9 8 11 5 kΩ 40ºC 104ºF 6 6 7 7 kΩ 50ºC 122ºF 4 6 5 3 kΩ 60ºC 140ºF 3 73 4 29 kΩ 66ºC 151ºF 2 94 3 36 kΩ 73ºC 163ºF 1 93 2 19 kΩ 86ºC 187ºF ...

Page 44: ...ovide motor power speed control WARNING The drum drive motor tub are grounded through the motor control Since the tub is plastic and the motor is isolated from the frame Its critical the ground leads from the tub drive motor motor control are connected properly Motor control Motor control Drum motor resistances Speed sensor WFMC Service Tips WFMC Service Tips Drum Drive Motor Drum Drive Motor 44 ...

Page 45: ...ully slide them toward rear of washers To install them carefully insert all four feet into notches in washer base then slide them forward NOTE Drain pump motor resistance ranges from 140 200Ω HINT To remove the drain pump access cover insert a pointed object or tool into the hole push in to release the latch and rotate the cover clockwise NOTE There s no provision for draining residual water from ...

Page 46: ...ter can be removed from the back of the tub remove rear panel for access 10ºC 50ºF 36 44kW 20ºC 68ºF 22 8 27 4kW 30ºC 86ºF 14 8 17 5kW 40ºC 104ºF 9 8 11 5kW 50ºC 122ºF 6 6 7 7kW 60ºC 140ºF 4 6 5 3kW 66ºC 151ºF 3 73 4 29kW 73ºC 163ºF 2 94 3 36kW 86ºC 187ºF 1 93 2 19kW NTC WFMC Service Tips WFMC Service Tips NTC Heater NTC Heater 46 ...

Page 47: ...or lock manual release insert a pointed object or tool into the hole push in to release the latch and rotate the cover clockwise HINT Door lock manual release cable is held to the right side of the drain pump by a clip Simply pull on the cable to release the door Current production drain pumps are beige color earlier pumps were black WFMC Service Tips WFMC Service Tips Door Lock Door Lock 47 ...

Page 48: ...e opened while they re locked preventing doors from closing Please follow these instructions to reset door locks NOTE Advise customers against pulling doors open while locked Rear view HINT Reach around back of door lock opposite latch opening and push onto back of lock plate directly behind latch until it clicks Push HINT If lock doesn t release pull green manual door release cord down and push o...

Page 49: ...panel screw caps remove 4 fascia panel screws and carefully lift fascia panel up 3 Pulling door lock latch out provides quickest repair doesn t require removing parts for access but allows scratching of door lock To pull latch out reach into lock with a strong steel loop place loop behind latch and pull latch out Some force is required HINT Locked doors open when door latches aren t properly seate...

Page 50: ...or drill bit push latch on circular drain pump access cover through small hole in cover then rotate cover cw clockwise to remove it Disconnect green door lock manual release cable from drain pump so door lock can be removed 3 Remove 2 screws holding door lock to front panel 4 Gently pry out white plastic front shield until it pops off front panel then slide lock to left until black plastic lock ra...

Page 51: ...s the magnet emits impulses to the Hall IC The water flow is marked by an arrow on the side of the sensor Specifications Voltage 12 VDC Detected flow rate 0 10 liters minute NOTE If there s air bubbles in the water higher flow rates may be detected Water flow arrow HINT Make sure the water flow arrow points from the water inlet valve to the dispenser WFMC6400 Service Tips WFMC6400 Service Tips Wat...

Page 52: ...ure switch brown has 3 switching positions Water level level 1 Water heating level Overflow level Analog Pressure Switch The analog pressure switch black determines the different water levels in the various wash programs It is piezo electric pressure on it generates a voltage and generates between 0 5 3 5 VDC Mechanical Pressure Switch Analog Pressure Switch HINT Its not helpful to measure the ana...

Page 53: ...d up to 900 wash spin cycles Heat Resistant Up to 130 C 266 F Stability Dropped from a great height won t dent like Stainless Steel Used on Mercedes Benz bumper Reinforced with glass fiber Extraordinary strength Very reliable Vibrates less less noisy Fewer parts Lower weight WFMC Service Tips WFMC Service Tips Polinox Polinox Outer Drum Tub Outer Drum Tub 53 ...

Page 54: ... 2 PK 5 BK 2 BL 6 WH 7 BL WH clear YE GN WH PK BL HINT This will help with reconnecting wires WH To water valves To heater To pressure switch To door lock To motor control To drain pump IMPORTANT Its possible to miswire the WH YE GN terminals Make sure the terminals are in the right order direction wires on left side 2 BL WH Remove cover to access wires BL WH ...

Page 55: ... heater To pressure switch To door lock To motor control To drain pump Remove cover to access wires WFMC6400 Service Tips WFMC6400 Service Tips Control Module Control Module Wire Terminal Colors Wire Terminal Colors 2 BL WH IMPORTANT Its possible to miswire the WH GY GN terminals Make sure the terminals are in the right order direction wires on left side ...

Page 56: ... open Turn off washer then close door Entering using WFMC3200 test programs To reset rotate cycle selector knob to Off position To enter test program push and hold Spin Selection and Delay Start buttons at the same time then rotate cycle selector knob ccw to Permanent Press Cold position Hold Spin Selection and Delay Start buttons until P 01 shows in display To select tests push Spin Selection but...

Page 57: ...enter test program push and hold Menu and Select buttons at the same time then rotate cycle selector knob ccw to Permanent Press Cold position Hold Menu and Select buttons until P1 Errors shows in display To select tests push Menu button to scroll through tests until desired test shows in display P1 P17 Start Pause light will flash To start tests push Start Pause button while its light is flashing...

Page 58: ...e faults Scroll through each fault and check if it occurred HINT To scroll through tests push Menu button WFMC6400 Spin Selection button WFMC3200 HINT To run tests push Start Pause button To end tests push Menu button WFMC6400 Spin Selection button WFMC3200 To check motor Run test P4 P 04 To check door latch Fault codes generated during wash run test P1 P 01 To check motor control Run test P4 P 04...

Page 59: ...o 3 Automatic test program P 03 P3 AUTOM No 4 Motor P 04 P4 MOTOR Yes 5 Model coding variations don t run P 05 P5 VARIANT No 6 Displays lights P 06 P6 DISPLAY No 7 Selector knob P 07 P7 SELECTOR No 8 Analog water level sensor Test not available P8 NIVEAU1 Yes 9 Pressure switch P 09 P9 NIVEAU2 Yes 11 Flow meter Test not available P11 FLOW Yes 12 Update control programming N A P 12 P12 UPDATE No 13 ...

Page 60: ...n cw 12 Counterclockwise rotation ccw HINT If Start Pause light doesn t come on for some tests door is open Turn off washer then close door HINT Using the test program can cut down repair times eliminate repeat calls from misdiagnosing problems NOTE drum speed RPM n pressure switch reading 0 P WFMC Service Tips WFMC Service Tips Test Program 1E WFMC64 Text Test Program 1E WFMC64 Text Displays Disp...

Page 61: ... code e g E 01 when fault occurred on in last 8 washes e g C 00 shows C 00 if fault didn t occur WFMC6400 display shows fault code when fault occurred on in last 8 washes e g 0 Er 01 WFMC3200 fault code display flashes alternating between fault code E 09 and wash when fault occurred C 01 WFMC6400 Display WFMC3200 Display E 09 C 01 WFMC6400 display shows fault code Er 09 and wash when fault occurre...

Page 62: ...ashing Door control broken Faulty Triac or control module E 05 Er 05 P 16 NTC open circuited Faulty NTC or bad wire harness E 06 Er 06 P 16 NTC shorted Faulty NTC or bad wire harness E 07 Er 07 P 16 Unexpected heating heater on at wrong time Faulty heater or stuck heater relay E 08 Er 08 P 16 Heater doesn t shut off Faulty heater or stuck heater relay E 09 Er 09 P 4 Communication lost to motor Fau...

Page 63: ...Faulty motor control d 02 dr 02 P 04 Motor control interruption Faulty motor control d 03 dr 03 P 04 Damaged motor control temperature sensor Faulty temperature sensor d 06 dr 06 P 04 NTC relay failure NTC too hot or relay stuck closed d 07 dr 07 P 04 Motor winding short circuited Motor winding short circuited d 08 dr 08 P 04 Motor speed sensor failed Faulty speed sensor or wire harness d 09 dr 09...

Page 64: ... t23 0051 D M P H 1 2 3 N H V t23 0051 D M P H 1 2 3 N H V t23 0000 D M P H 1 2 3 N H V t23 0000 D M P H 1 2 3 N 0 V t23 0072 D M P H 1 2 3 N 0 V t23 1154 D M P H 1 2 3 N 0 V t23 0066 D M P H 1 2 3 N 0 V t23 0000 NOTE n pressure switch analog sensor reading Operation WFMC6400 Display Notes Starts filling valve 2 cold Water starts at N0 level no water Fills up to NH level Filling using valve 2 cold...

Page 65: ...ted or scrolled through Stays red continually or stays off when tests are running Doesn t come on for some tests if door is open Operation WFMC6400 Display Notes Runs 6 seconds ccw Checks wash speed 50 RPM Stops and pauses for 2 seconds Runs 4 seconds cw Checks wash speed 50 RPM Stops and pauses for 2 seconds Spins to full speed 1200 RPM WFMC64 or 1000 RPM WFMC32 Checks spin speed stops 100 RPM if...

Page 66: ...Menu button WFMC64 NOTE 1 For WFMC32 display shows L 15 L 1 for Permanent Press Cold Regular Cotton Cold rotating ccw through each knob position NOTE 2 If a display segment doesn t come on replace control module since button knob switches are included with control modules P7 SELECTOR P7 SELECTOR P7 SELECTOR P11 WFMC6400 Display The red background of the display flashes on and off 5 times While WFM...

Page 67: ...tch Operation WFMC6400 Display Notes Changes as water level changes Changes as water level changes When n075 has been reached volume display jumps to U15 Test P9 NIVEAU2 P 09 Mechanical pressure switch test program The test turns on the mechanical pressure switch and generates fault codes Stop it by pushing the Spin Selection button WFMC32 or Menu button WFMC64 D M P H 1 2 3 N 0 V U00 n000 D M P H...

Page 68: ...Er 12 check flow meter for errors Test P11 FLOW Flow meter test program The test turns on the flow meter WFMC6400 only and generates fault codes The test has ended when U05 has displayed 1 minute and can be stopped by pushing the Menu button D M P H 1 2 3 N 0 V U00 F D M P H 1 2 3 N 0 V U05 F Flow rate measured by flow meter in liters minute Water volume measured by flow meter Operation WFMC6400 D...

Page 69: ...or 30 minutes and can be stopped by pushing the Spin Selection button WFMC32 or Menu button WFMC64 D M P H 1 2 3 N H V t20 D M P H 1 2 3 N H V t22 Water temperature in ºC HINT To save time with Test T16 press Menu to stop testing after the temperature has gone up several degrees confirming the washer is heating OK HINT Water level symbols change as follows e g test P15 WFMC6400 from N0 below heati...

Page 70: ...supply Check water inlet hose filters Clean if dirty Replace filters if damaged Check incoming water pressure Check voltage output to water inlet valves when they re energized If no voltage replace faulty control module Measure resistance of water inlet valves 2 7 4 5 kΩ Replace inlet valve s if faulty Washer won t drain Drain pump or pump motor protector has failed Control module has failed Disco...

Page 71: ... drum motor Washer won t heat Heater has failed NTC has failed Heater is covered with scale Voltage too low Control module has failed Disconnect heater and measure resistance at terminals 13 7 15 2 Ω Replace heater if faulty Disconnect NTC and measure resistance at terminals 22 8 27 4 k Ω 20ºC 68ºF Replace NTC if faulty If possible remove clean heater If not replace it Have an electrician check th...

Page 72: ... t lock Door isn t closed properly Door latch is broken Door lock has failed Close door securely If door won t latch check door latch and door hinge alignment Replace broken door latch Measure resistance of door lock mechanism 159 211 Ω Replace faulty door lock mechanism WARNING Unplug washer before starting any repairs HINT The washer test program diagnoses problems quickly and thoroughly where r...

Page 73: ...1st Edition Revision 6 2 2 04 73 WFMC Service Tips WFMC Service Tips Troubleshooting of Minor Troubleshooting of Minor Faults 1 Faults 1 Customer Self Customer Self Help Help ...

Page 74: ...1st Edition Revision 6 2 2 04 74 WFMC Service Tips WFMC Service Tips Troubleshooting of Minor Troubleshooting of Minor Faults 2 Faults 2 Customer Self Customer Self Help Help ...

Page 75: ...1st Edition Revision 6 2 2 04 75 WFMC Service Tips WFMC Service Tips Customer Cleaning and Customer Cleaning and Maintenance Maintenance ...

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