GV 640 Service Manual 89
For internal use only
The electronics unit identifies a higher discharge
pump load and switches the pump off. An error
code will be stored in the electronics unit.
1 Water discharge inlet
2 Water discharge outlet
3 Air channel
4 Float chamber
5Float
6 Ventilation opening
8.11 Non-return valve
The non-return valve prevents water from running back
from the discharge section of the dishwasher.
This prevents residual dirt particles, dirty water or
residual detergent from flowing back into the rinsing
cycle.
1 Pump cavity
2 Non-return valve
3 Sealing lip
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