Customer Questions and Answers for Dispenser Assembly by Bosch

Hello Pamela, You need to check on the water fill. When the unit starts, it will try to pump out (as designed). The next sound you hear is a hissing sound which is the water coming into the unit. When the motor kicks on, open the door and insure the unit is filling. If there is no water, you probably need to replace the water inlet valve or check the drain hose to insure it is looped up to the countertop before going into the sink drain, (as this will cause a siphon situation). Unless the sump screen is stopped up preventing water circulation, one of the previously mentioned situations will be the cause. Let us know if we can further assist in your repair.