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I.
SAFETY INFORMATION
II.
OPERATION
III.
DESCRIPTION OF FUNCTION / TECHNICAL INFORMATION
IV.
CONSUMPTION RATES / ENERGY REQUIREMENT / OTHER DATA
V.
REPAIRS
VI.
SUPPLEMENTS
I.
SAFETY INFORMATION
Before commencing repairs, ALWAYS disconnect the appliance from the power supply!
If tests have to be performed while the appliance is live, ALWAYS use a residual-
current-operated circuit-breaker! When repairs are complete, perform a function test, as
well as a safety test in accordance with VDE 0701.
1.
Safety test in accordance with VDE 0701
Plug in the tester mains plug.
In the case of switchover models connect L1 and L2 on the tester.
Switch on the appliance (door must be closed).
Perform the test.
II.
OPERATION
1.
Selecting the programme
"Cottons/coloureds"
Easy-care
Timed programme
2.
Buttons
ON/OFF
"Low heat"
r120085e -15/1
04.99
REPAIR INSTRUCTIONS
TUMBLE DRYER
Vented WTA34.. / WTA35..
Turn the programme selector in a clockwise direction to the
desired drying setting (6 automatic drying settings).
Turn the programme selector in an anti-clockwise direction to the
desired setting (5 automatic drying settings).
Turn programme selector / time switch to the desired time.
Switches the appliance on / off.
For delicate textiles. The temperature is reduced.
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Summary of Contents for Bosch WTA34 Series
- Page 1 REPAIR INSTRUCTIONS TUMBLE DRYER Vented WTA34.. / WTA35.. SAFETY INFORMATION Page OPERATION Page III. DESCRIPTION OF FUNCTION / TECHNICAL INFORMATION Page CONSUMPTION RATES / ENERGY REQUIREMENT / OTHER DATA Page REPAIRS Page SUPPLEMENTS Page SAFETY INFORMATION Before commencing repairs, ALWAYS disconnect the appliance from the power supply! If tests have to be performed while the appliance is live, ALWAYS use a residual- current-operated circuit-breaker! When repairs are complete, perform a function test, as well as a safety test in accordance with VDE 0701.
- Page 2 TUMBLE DRYER Signal Button pressed (LED on) – signal emitted in the “anti-creasing” phase. Changing the volume – hold down the button, the signal changes. When the button is released, the volume has been changed and stored. Switching off the signal – press the button again (LED off). Start time* The start time can be specified from 1–19 hours.
- Page 3 TUMBLE DRYER Operating and display module is situated in the fascia. Control and power module is situated on the right frame support. Thermistor sensor for measuring the air temperature. Condensation pump is situated in the base group underneath the belt tensioning device. Motor is situated on the right in the base group.
- Page 4 TUMBLE DRYER Resistance values NTC R3 / NTC R4 Temperature Resistance kΩ 9–11 2.3–2.7 NTC R2 is situated above the heater and measures the temperature of the process air blown into the washing. Temperature Resistance kΩ 18–22 4.5–5.5 Motor The motor drives the drum and the fan. Specifications: Rated input when appliance empty: 140 W...
- Page 5 TUMBLE DRYER When the door is opened, the capacitor is discharged. If a voltage of less than 1.5 V is measured on the capacitor when the machine is switched on, either the door was opened or a mains failure lasted too long while the appliance was switched off. The programme must then be restarted.
- Page 6 TUMBLE DRYER If the maximum temperatures are exceeded and Heat setting 0 has still not been reached, the heater setting is reduced by one and is maintained for 20 s. During this time the temperatures are monitored. If they do not drop below the maximum values, the heat setting is reduced again.
- Page 7 TUMBLE DRYER REPAIRS Troubleshooting When implementing troubleshooting procedures, please comply with the following: All test programmes should be run. If “Test component” is indicated in the Procedures column of the troubleshooting table the components are to be tested in accordance with their electrical specification. To test the component, remove the plug from the power module.
- Page 8 TUMBLE DRYER Error Error display Possible cause Test / Procedure Re 4 Air-intake / exhaust-air Test air passages. passages blocked. Customer instruction: Overload Load < 5 kg dry weight. Fan impeller loose. Test fan impeller. Motor is not rotating. See Error number 7. Heater does not switch off.
- Page 9 TUMBLE DRYER Error Error display Possible cause Test / Procedure Drum is not rotating. Motor is not rotating See Error number 7. Belt loose, slipping or Test belt and clamping defective. device. Clamping device defective. Drum blocked or Test drum. overloaded.
- Page 10 TUMBLE DRYER Error Error display Possible cause Test / Procedure Re 8 Power module defective. Start “BW cupboard dry” test program. On the power module measure the drive voltage (mains voltage) for heater E1, 2, 3. Excessive contact See Error number 11 E. resistance in sliding contact system.
- Page 11 TUMBLE DRYER Error Error display Possible cause Test / Procedure Washing too dry. Wrong programme selected. Customer information: Select lower degree of dryness. Short-circuit or shunt circuit Start “Gentle dry” test in conductivity system. program. Do not short- circuit between the agitator and drum.
- Page 12 TUMBLE DRYER Error Error display Possible cause Test / Procedure Re 14 Door switch F1 and / or Remove plug X11–1 from locking mechanism the power module. defective. Test switch, cable, plug and mechanism – Locking hook – Bowden cable –...
- Page 13 TUMBLE DRYER Error Error display Possible cause Test / Procedure Starts by itself when Appliance was switched off Customer information: switched on. during a drying cycle. If the appliance switches off and subsequently switches on again while a drying programme is running, the appliance is starting by itself in order to terminate the programme which was...
- Page 14 TUMBLE DRYER New control and power module Appliances from FD 7704 will receive a new control and power module mask 4 (software version V 4.00 is indicated on the processor). Instead of “clocking” – “scan” conductivity measurement – identification of empty drum or dry washing identified (4 minutes).
- Page 15 TUMBLE DRYER Drum bearing at the rear A new plastic drum bearing was used during the production period FD7710–FD7803. The assembly kit (Mat. no.: 15 4177) is also available as a spare part. See diagram for installation. Increase to customer-service index /06 New base group consisting of an upper and lower section.