Bosch WTA4410US Repair Instruction Download

Page: 28 / 30

7 FAULT

DIAGNOSTICS

7.1 Time

jumps

Customer complaint

Cause

Remedial action

Remaining running time jumps at the end of the
programme

Load too high, max.+100%

Observe max. load.

Time jumps

Very high ambient temperature

> 30 °C

Ensure that there is adequate ventilation.

Initial moisture too high

Increase spin speed.

Different types of washing. Varying residual
moisture in the textiles.

Refer customer to different types of washing
(cotton, synthetic fibres).

113_58300000104082_ara_en_h.doc – 19.03.07

Seite 28 von 30

Summary of Contents for WTA4410US

Page 1: ...m KI02 11 6 REPAIR 12 6 1 Facia Panel 12 6 2 Door 13 6 3 Interior and outer door 13 6 4 Front Panel 14 6 5 Bearing plate 16 6 6 Removal of Drum interior lighting Optional 17 6 7 Motor 18 6 8 Belt removal KI01 19 6 9 Belt Tension adjuster 19 6 10 Removing the Ki03 belt 20 6 11 Heating element 22 6 12 Disassembly safety temperature regulator KI01 23 6 13 Removal of safety temperature regulator KI02 ...

Page 2: ...le voltage applies The protective conductor resistance may on no account exceed the value given in the standard It is crucial with respect to both personal safety and appliance function Following repair tests must be carried out according to VDE 0701 or according to regulations specific to the country concerned Following repair both function tests and leak tests must be carried out WARNING Observe...

Page 3: ...3 Endangered coponents The following elements are endangered by electrostatic voltage µ Processors and IC s Transistors thyristors and Triac s Diodes 1 1 4 Causes and effect They lead an electrostatic voltage with itself of up to 35 000 V if you walk over a non conductive carpet of up to 12 000 V if you walk over a non conductive PVC soil and of up to 1 800 V if you sit on a padding chair The elec...

Page 4: ...geable plastics foils etc Components modules and PC boards are to be touched in such a way that the conductive strips or connections are if possible not affected EEC s may arrive not too close at monitors and televisions Use for transport only conductive materials or the original packaging 1 1 6 Electrostatics protective system The electrostatic voltage of the body is derived over the bracelet and...

Page 5: ... appliance Loosen the counter nuts Adjust the feet so that the appliance is at floor level Then tighten the counter nuts The dryer can be set up in combination with a washing machine front loader To ensure a reliable connection you have to use the original connection kits see operation instruction The set up place should be chosen in a way that the minimum distance of 10 cm to the wall can be kept...

Page 6: ...3 OPERATION 3 1 Control Panel A Programme selector B Programm progress indicator C LED Modul Optional D Additional funcations E Start button 113_58300000104082_ara_en_h doc 19 03 07 Seite 6 von 30 ...

Page 7: ...2 Disassembly Worktop Disassembly 3 screws on the panel disassembly B Panel forward overboard end to upturn A Screws button and Modul B Screws panel 113_58300000104082_ara_en_h doc 19 03 07 Seite 7 von 30 ...

Page 8: ... acoustic signal sounds when the signal is switched on Start time delay The start time of the programme can be delayed up to 19 hours A dot flashes on the display The selected time elapses in 1 h steps Programme progress indicator status The programme sequence is indicated by LEDs Anti crease At the end of the 10 of colldown the program starts its anti crease phase It can be interrupted by the use...

Page 9: ...ver functions of the control of expirations of drying determination of parameters as well as the control of motor and heating Residual moisture Cotton Color laundry Extra dry 4 Conductance measurement Wardrobe dry plus 2 The drying goal is determined by a conductance measurement The conductance measurement is attributed to a resistance test Wardrobe dry 0 Easy dry 6 Ironing dry 12 Easy care Very d...

Page 10: ...regulator switches switching off temperature 120 C 3K Safety temperatur by ca 150 C 4K A Temperature regulator processing air B Safety temperature regulator Hinweis The safety disconnection may not be put back The conversion kit 447311 must be inserted See disassembly safety temperature regulator KI01 113_58300000104082_ara_en_h doc 19 03 07 Seite 10 von 30 ...

Page 11: ...e safety temperature regulator switches switching off temperature 120 C 3K Safety temperatur by ca 150 C 4K Hinweis Safety temperature regulator 150 C B After elimination of errors the safety temperature regulator can be put back Temperatur regulator100 C C Current linkage D 113_58300000104082_ara_en_h doc 19 03 07 Seite 11 von 30 ...

Page 12: ...screws B Release facia panel forward and then turn upward Take off the data line from electronics at the facia panel Remove selector switch switch holder and operating lamp A A Screws at the electronic B Screws facia panel A Screws selector switch holder 113_58300000104082_ara_en_h doc 19 03 07 Seite 12 von 30 ...

Page 13: ... set and outer door of the internal door release Removal of the Door Take off the two crews at the door with a Phillips screwdriver to loosen and dismantle the door Remove the hinge support outer door internal door Mounting Outside und internal door it rests in such a way that the inside and outer door sit again parallel With a slot screwdriver release at the hinges opening the respective side 113...

Page 14: ...Facia Panel Door removal Take off all screws A B C und D Electronics and wiring harness solve and take away front panel A 2 Screws PC Board B Screws facia panel and front panel C 7 Screws bearing panel D 3 Screws bottom panel 113_58300000104082_ara_en_h doc 19 03 07 Seite 14 von 30 ...

Page 15: ...rior lighting and door switch take off 3 walked 2 walked A Plugs drum lighting and door switch Develop after front front of Cable straps loosen and wiring harness with key bank dismantle 113_58300000104082_ara_en_h doc 19 03 07 Seite 15 von 30 ...

Page 16: ...ectrical connection to the drum interior lighting Take away the door switch Screws A dismantle Bearing plate on the left and on the right release and develop forward Temperature regulators and exhaust air duct dismantle Picture 1 A Bearing plate B Latch hook bearing plate 113_58300000104082_ara_en_h doc 19 03 07 Seite 16 von 30 ...

Page 17: ...he top work panel Remove the facia panel Take of the plug of the lamp Remove the lamp cover Release the retaining tie clip with a slot screwdriver A Support clip B Lamp socket A Electrical connections 113_58300000104082_ara_en_h doc 19 03 07 Seite 17 von 30 ...

Page 18: ... Pic 2 Motor removal Take off back panel Take away lower half of the heater channel Put the appliance on the side put to open the base plate Fix the motor shaft with 10 mm ring spanner With a 13 mm ring spanner take off the exhaust wheel Release the belt through the opening in the base plate Take away the four screws of the motor at the base plate and Pic 3 Take the motor out through the opening i...

Page 19: ...ing see dismantling bearing plate Take off the belt Remove the two screws of the belt tension adjuster at the base plate and take off belt tension adjusters over the opening in the base plate 6 8 1 Belt mounting Draw up the belt over the drum Hang up and bolt bearing plate Stretch the belt with the belt tension adjuster Close the opening on the base Montage of the front panel facia panel and work ...

Page 20: ...eller 6 Detach the belt over the drum 7 Remove the two top screws A on the process air duct 8 Thread the belt between the process air duct and housing 9 Insert and tighten the two screws A you removed earlier 10 Remove the two bottom screws B on the process air duct 11 Press the duct back and thread the belt between the housing and process air duct see step 8 12 Remove the belt Stretch belt before...

Page 21: ...Step 7 Step 4 Step 8 Step 5 B belt C cross bar 113_58300000104082_ara_en_h doc 19 03 07 Seite 21 von 30 ...

Page 22: ...Removal Take off the back panel Take away the bottom air duct cover Disconnect the electrical connections Take off the upper and bottom screws of the heating element 113_58300000104082_ara_en_h doc 19 03 07 Seite 22 von 30 ...

Page 23: ...air temperature regulator remains existing G 5 Lower processing air cover dismantle and by the conversion kit 445193 replaced 6 New processing air cover insert Exhaust air and safety temperature regulator again attach Step 3 F Electrical connections Step 6 B C Safety temperature regulator Processing air temperature regulator 113_58300000104082_ara_en_h doc 19 03 07 Seite 23 von 30 ...

Page 24: ...ty temperature regulator is installed The safety temperature regulator switches switching off temperature 120 C 3K Safety temperatur by ca 150 C 4K Safety temperature regulator 150 C B Temperatur regulator100 C C Current linkage D 113_58300000104082_ara_en_h doc 19 03 07 Seite 24 von 30 ...

Page 25: ...ator exhaust air Remove work top plate facia panel front panel and bearing plate Unscrew the two screws and remove the temperature regulator A Temperature regulator exhaust air 113_58300000104082_ara_en_h doc 19 03 07 Seite 25 von 30 ...

Page 26: ...l Remove work top panel door facia panel front panel and bearing plate Bearing plate at the air duct loosen and drum forward remove Take out grounding pin and feather spring Remove snap ring and pull off the bearing plate mounting of the drum axle pull Take out the defect bearings if necessary with a hammer ...

Page 27: ...D test program is to be started Probe tip Probe tip material No 340730 with resistance tests absolutely the construction units on the module take off Probe Tipp Optional Probe Tipp Mat Nr 340951 for SAFETY off KI02 for Relay plate heating Protective glove Material Nr minimum 9 340728 Maximum size 10 340729 113_58300000104082_ara_en_h doc 19 03 07 Seite 27 von 30 ...

Page 28: ...x 100 Observe max load Time jumps Very high ambient temperature 30 C Ensure that there is adequate ventilation Initial moisture too high Increase spin speed Different types of washing Varying residual moisture in the textiles Refer customer to different types of washing cotton synthetic fibres 113_58300000104082_ara_en_h doc 19 03 07 Seite 28 von 30 ...

Page 29: ...omponents Chemical odour Detergent fabric softener scented cloths Changing detergent fabric softener scented cloths if possible do without fabric softener scented cloths 7 3 Leaks Customer complaint Cause Remedial action Door leaking Seal dirty Clean door seal Seal damaged Replace door seal Exhaust air hose leaking Condensation in the exhaust air hose Check length of exhaust air hose See Pressure ...

Page 30: ...8 TECHNICAL SPECIFICATIONS 113_58300000104082_ara_en_h doc 19 03 07 Seite 30 von 30 ...

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