Foam Detection - Bosch WAQ283S1GB Repair Instruction

5.8

Foam detection

The washing machine detects the presence of too much foam Turing
two moments in the washing program, alter the drainage of the rinse
cycle and during the spin cycle.
5.8.1 Foam at the end of the rinse cycle
If after the drainage of the rinse cycle the pressure sensor measures a
value over the value of foam detection, the pumps runs a little longer
to try to reduce the water level. If after some tries, the pressure sensor
still measures a high level, it starts a special program to eliminate the
foam.
This special program performs some rinse cycles and movement of
the load to try to eliminate the foam.
In every washing program can be performed a maximum of two of
these special programs.
5.8.2 Foam detection during the spinning cycle
If during the spinning cycle, the pressure sensor detects an increase
of pressure above a certain value or the difference between the real
speed and the theoretical speed is bigger than 150 rpm, the module
understands that there is still foam in the load.
Once foam it is detected, it is started the special program to eliminate
foam. It can be perfomed twice.
209_58300000178575_ARA_EN_C.doc – 30.06.2015
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