General Information On Control - Bosch SRS4002GB Repair Instruction

3.4

General information on control

3.4.1 Tap turned off
The appliance stops in the programme 6 minutes after the start of
programme (scan filling position). The remaining running time is
displayed unchanged. The control remains in this position until the
filling level has been reached.
3.4.2 Regeneration electronics
The electronics determine, in comparison with the water hardness set
on the appliance, the volume of water which is possible until the
softening system is exhausted.
The volume of water which has run through is calculated.
Regeneration then takes place once the maximum possible number of
rinse cycles has been reached.
The sequence characteristics of the regeneration electronics are
described under Initial start-up / Replacing the electronics.
3.4.3 Warm water detection
If the water running in for the final rinse is hotter than 45 °C, the heat
exchanger for the drying phase is not filled. In order to ensure the
temperature difference required for condensation, the temperature in
the final rinse cycle is increased to 72 °C, thereby increasing the
inherent heat of the dishes.
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3.4.4 Memory electronics
The electronics module has its own memory which remembers the
programme last selected. If no new selection is made at the start of
the programme, the programme last selected will run.
3.4.5 Power failure
The electronics module has a power failure memory function which
ensures that the current rinse programme continues in the event of
a power failure or programme interruption.
3.4.6 Sensors
All outgoing signals from the door switch, the level switch, the NTC
sensor and the refill switches are recorded and evaluated by the
microprocessor at the required time.
3.4.7 Components
The components such as the valves, the detergent and rinse aid
dispensers (actuator) are actuated by triacs (see photo). The
circulation pump, drainage pump and the instantaneous water heater
are switched on by relays.
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