For any front loading washer with a draining problem, the first things to check for are a clogged pump or drain hose. But Bosch, always wanting to be different, adds another little Gotcha to their washers that’s not well-known but can also cause poor or no-draining problems. Sublime Master denrayr reveals this esoteric kata unique to Bosch washing machines:
There is a big ball in the hose that connects [the pump] to the tub. This ball is there to act as a one way valve to prevent dirty water from enterin the tub. Sometimes this ball will get stuck due to dirt or other contaminents. Remove the ball and clean it and the hose and reinstall.
Samurai Appliance Repair Man
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