Bosch WTA34 Series Petunjuk Perbaikan - Halaman 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

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

E2 + E3

Heat setting 2 or Heat setting 2

Micro-controller

Output

Analogue input

Heat setting 0).