Bosch WTA35 Series Istruzioni per la riparazione - Pagina 5
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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. If the voltage on the capacitor is still sufficiently high, the programme is
reset and restarted following a voltage interruption.
Door switch F1
Closed
2.
Principle of heating control
As the heater consists of 2 phase windings which operate at different power levels,
a different heating control can be used at various heat settings.
Heat setting 0 =
Heat setting 2 =
Heat setting 3 =
The heat setting which is active is dependent on the programme sequence and on the
temperatures behind the heater (NTC R2) and on the drum outlet (NTC R3). If the motor
rotates in an anti-clockwise direction, the current heat setting is reduced by one
(Heat setting 3
Max.
Min.
Heat
setting
The maximum heat settings and minimum temperature values (NTC R2, NTC R3)
permitted for a programme section have been defined in the drying programme.
Both temperatures are monitored in parallel, the reset temperature having higher priority.
r120085e -15/5
04.99
Open
OFF
E3
E2 + E3
Heat setting 2 or Heat setting 2
Micro-controller
Output
Analogue input
Heat setting 0).