This manual is very helpfull to use the Power Supply. All technical information has been available.
For service use the circuit diagrams are very good.
Text excerpt from page 26 (click to view)
...the wash result is unsatisfactory.
The dishes are still dirty. â The wrong wash programme was selected. â The dishes were arranged in such a manner that water has not reached all parts. The dish racks must not be overloaded. â The filter in the base of the washing compartment is dirty or incorrectly positioned. â Detergent was not used or too little was used. â In the case of scale deposits on the dishes: the special salt container is empty or the water softener is incorrectly adjusted. â The drain hose is incorrectly laid. The dishes are wet and dull. â Rinse aid was not used. â The rinse aid container is empty. There are streaks, milky spots or a bluish coating on glasses and dishes. â Decrease rinse aid dosing. There are dried water drops on the glasses and dishes. â Increase rinse aid dosing. â The detergent may be the cause. Contact the detergent manufacturer's consumer advisor.