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Table of Contents
- 1 Disassembly Fascia Control Panel
- 2 Disassembly Top & Rear Panels
- 3 Disassembly Tub, Drum & Dampers
- 4 Disassembly - Drum Drive Motor
- 5 Disassembly - Drain Pump
- 6 Disassembly Front Panel
- 7 Installing Door Seals
- 8 Door Lock
- 9 WFMC64/84 Service Tips - Water Flow Meter
- 10 Fault Codes
- 11 Troubleshooting
- 12 Washer Service Pop Quiz
- Download this manual
1
Nexxt
Nexxt
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Fascia panel disassembly.......................... 2
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Top & rear panel disassembly................... .4
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Tub, drum & dampers...................................... 5
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Drum drive motor..................................... 6
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Drain pump........................................... ...7
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Front panel disassembly.......................... ..8
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Installing door seals.................................10
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Heater & NTC.......................................... 11
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Door lock................................................12
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Vibration checklist...................................13
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Sensors..................................................14
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Test program...........................................17
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Fault codes..............................................19
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Troubleshooting.......................................22
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Oversudsing............................................25
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Quiz.......................................................26
702_58300000133618_ara_en_a
Washer Training/Repair Manual
Washer Training/Repair Manual
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Rev 0 (1/17/08)
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Table of Contents
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Summary of Contents for Bosch WFMC64
- Page 1 Nexxt Washer Training/Repair Manual Nexxt Washer Training/Repair Manual • Fascia panel disassembly………………...….. 2 • Top & rear panel disassembly………….…… .4 • Tub, drum & dampers........5 • Drum drive motor………………………….…… 6 • Drain pump…………………………….……… …7 • Front panel disassembly………………….…. ..8 •...
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Page 2: Disassembly Fascia Control Panel
Disassembly Disassembly – Fascia (Control) Panel (1) – Fascia (Control) Panel (1) T-20 screws To remove fascia 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. - Page 3 Disassembly Disassembly – Fascia (Control) Panel (2) – Fascia (Control) Panel (2) Control modules can be readily removed from fascia panels, but there’s a knack to it – must use the procedure below exactly as shown. Start from left side Pry outer &...
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Page 4: Disassembly Top & Rear Panels
Disassembly Disassembly – Top & Rear Panels (1) – Top & Rear Panels (1) T-20 screws Remove top panel screws Remove top panel Top panel removed Rear panel removed To remove rear panel to access drive motor and rear of drum, remove (18) T-20 screws. -
Page 5: Disassembly Tub, Drum & Dampers
Disassembly Disassembly – Tub, Drum & Dampers – Tub, Drum & Dampers Outer drum (tub) All washers starting with index __/04 have new resin tubs, front and rear, with a translucent beige-tan color compared to older The tub consists of two durable Polinox plastic shells blue-white tubs. -
Page 6: Disassembly - Drum Drive Motor
Disassembly Disassembly – Drum Drive Motor – Drum Drive Motor To remove drum drive motors: HINT: Drum drive motors and controls have changed a • Remove rear panel few times – motors and motor controls can’t be mixed. • Remove rear tub spring •... -
Page 7: Disassembly - Drain Pump
Disassembly Disassembly – Drain Pump – Drain Pump To remove drain pumps: • Remove front panel • Loosen and remove hoses • Disconnect green door latch release cord. • Disconnect wire harness • Carefully slide pump toward rear of washer, then lift it out of washer (taking care to not damage the four rubber feet). -
Page 8: Disassembly Front Panel
Disassembly Disassembly – Front Panel (1) – Front Panel (1) Rear access is best Hinges cannot be reversed. for most repairs. Remove hinge cover screws Remove hinge screws Remove door seal spring Remove door latch screws Carefully remove front shield Removing front shield Rev 0 (1/17/08) 702_58300000133618_ara_en_a... - Page 9 Disassembly Disassembly – Front Panel (2) – Front Panel (2) T-20 screws Front panel tab T-20 screws Remove top front panel screws Remove bottom front panel screws Note front panel mounting tabs Removing front panel at this point will make HINT: removing front counterweights easier.
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Page 10: Installing Door Seals
WFMC Service Tips WFMC Service Tips – Installing Door Seals – Installing Door Seals Certain repairs can involve removing or disconnecting the door seal (gasket) for access. To insure proper washer operation and prevent leaking, door seals must be reinstalled correctly. Make sure clamp doesn’t pull seal off front shield Place spring clamp... - Page 11 WFMC Service Tips WFMC Service Tips – Heater & NTC – Heater & NTC 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 –...
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Page 12: Door Lock
WFMC Service Tips WFMC Service Tips – Door Lock – Door Lock To remove the access cover to use the door lock HINT: manual release, insert a pointed object (or tool) into the hole, push in to release the latch and rotate the cover clockwise. Door lock manual release Use care to avoid... - Page 13 WFMC Service Tips WFMC Service Tips – Vibration Checklist – Vibration Checklist Front loaders can vibrate more than top loaders due to higher spin speeds. Checklist for occasional vibration: Re-level washer – Most vibration service calls come from improperly leveled washers. Re-level washers side to side and front to back using a bubble level.
- Page 14 During the entire fill the washer continually adjusts for the size of the load and determines if more water is needed using an analog pressure switch and a flow meter. 2. Digital Temperature Sensor (WFMC32/33/53 & WFMC64/84) The thermostat monitors the temperature of the water and controls the length of time the heating element is on, ensuring the proper temperature for the chosen cycle.
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Page 15: Wfmc64/84 Service Tips - Water Flow Meter
WFMC64/84 Service Tips WFMC64/84 Service Tips – Water Flow Meter – Water Flow Meter Flow sensor The flow sensor measures the volume of (cold) water flowing into the detergent dispenser. Water flow consists of an impeller wheel with a magnet core Cold and a Hall integrated circuit. - Page 16 WFMC64/84 Service Tips WFMC64/84 Service Tips – Mechanical & – Mechanical & Analog Pressure Switches Analog Pressure Switches The water level (pressure switch) system consists of a pressure sensor and a pressure switch. Pressure Pressure Switch Sensor The pressure switch (brown) has (3) switching positions: •...
- Page 17 WFMC Service Tips WFMC Service Tips – Test Program (1A): Starting – Test Program (1A): Starting WFMC32/33/43/53 Test Program WFMC32/33/43/53 Test Program WFMC32/33/43/53 washer test programs self-diagnose problems, including listing the last 8 fault codes from the control module & the last 16 fault codes from the motor control. The tests are easy to use, speeding up and simplifying diagnosing washer issues.
- Page 18 WFMC64/84 Test Program WFMC64/84 Test Program WFMC64/84 washer test programs self-diagnose problems, including listing the last 8 fault codes from the control module & the last 16 fault codes from the motor control. The tests are easy to use, speeding up and simplifying diagnosing washer issues.
- Page 19 • WFMC32/33/53 displays alternate between fault 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. • WFMC64/84 displays show fault code & when fault occurred on in last 8 washes (e.g. 0 - Er:01). WFMC32/33/53 fault code displays flash –...
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Page 20: Fault Codes
(e.g. C:00) – shows C:00 if fault didn’t occur. look at # of faults to see which faults occurred. • WFMC64/84 displays show fault code & when fault occurred in last 8 washes (e.g. 0 - Er:01). WFMC32/ WFMC64/ WFXD52 Displays... - Page 21 (e.g. C:00) – shows C:00 if fault didn’t occur. faults and look at # of faults to • WFMC64/84 displays show fault code & when fault occurred in last 16 washes (e.g. 0 - dr:01). see which faults occurred. WFMC32/WFXD52...
- Page 22 WFMC Service Tips WFMC Service Tips – Troubleshooting (1) – Troubleshooting (1) Symptom Problem Solution Washer won’t start. Electricity is disconnected Make sure washer is connected to an appropriate 120V, 60 Hz or has been turned off. circuit (according to local codes). Turn on electricity. Cycle selector knob or Control module has onboard cycle selector knob.
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Page 23: Troubleshooting
WFMC Service Tips WFMC Service Tips – Troubleshooting (2) – Troubleshooting (2) Symptom Problem Solution Drum won’t rotate. Drum rear bearing Check how drum rotates. If drum wobbles or won’t move, has failed. replace outer tub (containing faulty rear bearings). Motor control has Check voltage at motor connectors when motor is energized. - Page 24 WFMC Service Tips WFMC Service Tips – Troubleshooting (3) – Troubleshooting (3) Symptom Problem Solution Washer overheats. Control module has Check voltage to heater. If voltage is present when heater failed. shouldn’t be on, replace faulty control module. NTC failed. Disconnect NTC and measure resistance at terminals (~ 22.8 –...
- Page 25 WFMC Service Tips WFMC Service Tips – Oversudsing & Suds Lock – Oversudsing & Suds Lock If washers time out and shut off without an end of cycle signal (and without going through the spin cycle), the washer has experienced suds lock, a possible occurrence with all front loader washers (regardless of manufacturer).
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Page 26: Washer Service Pop Quiz
?? Washer Service Pop Quiz ?? ?? Washer Service Pop Quiz ?? Any laundry detergent can be used with front loader washers (T/F). The washer test program eliminates the need for diagnosing (T/F). Washer doors can be reversed from left to right hinge (T/F). Drive motors haven’t changed and can be used with any washer or motor control (T/F). - Page 27 ?? Washer Service Pop Quiz ?? ?? Washer Service Pop Quiz ?? Answers Answers Any laundry detergent can be used with front loader washers (T/F). The washer test program eliminates the need for diagnosing (T/F). Almost! Washer doors can be reversed from left to right hinge (T/F). Drive motors haven’t changed and can be used with any washer or motor control (T/F).