56 GV 640 Service Manual
For internal use only
6.7.8 Heating capacity insufficient
The water is to be heated by 2.5 °C/min. If it is heated up more slowly, the water hardness and the setting
of the softening equipment must be checked. It is possible that deposits have built up on the heater.
Clean the dishwasher with a suitable cleaning agent and descale if necessary. The Küppersbusch
Customer Service descaler is to be used.
Measure the winding resistance of the BLDC
motor.
Measure the winding resistance on the winding
contacts.
Resistance: approx. 41.5
Ω ±4Ω or approx.
53.5
Ω ± 4.5 Ω depending on the manufacturer.
Resistance readings are approximate readings.
Results must be symmetrical.
6.7.9 Removing the heater pump
This is only possible if the rinsing cavity is opened up.
1. Remove the rubber support between the
pump unit and the pump cavity.
2. Remove the hose clamp on the connection to
the water diverter with a side cutter.
Please note!
Do not open the heater pump!
The heater pump can only be replaced as a whole component.
Spare parts are not available.
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