Whistling Noise in a Bosch SHY56A

Filters

• Bosch dishwashers do not have self-cleaning filters. Filters should be cleaned regularly. If filters are clogged, the dishwasher may present a whistling sound as water attempts to clear the filter. Remove the filters and wash them with soapy water and a soft brush, then rinse and replace them.

Worn Bearing

• Whistling during the wash cycle may indicate a worn bearing on the wash motor, and a wash motor replacement may be required. A Bosch SHY56A repair and service manual as well as replacement parts are available for purchase online from appliance repair websites specializing in Bosch appliance parts or from you local Bosch appliance dealer.

Heater Fan

• When the heater fan bearings on your Bosch dishwasher become worn or rusted, they may whistle, squeal or present a scraping noise during the dryer cycle. If the fan bearings are worn, you will need to replace the fan motor.

Water Valve

• If the water inlet valve on your Bosch dishwasher is aging or defective, water entering the valve can make a considerable noise. A defective water valve can cause water lines to rattle and rumble. If yours is doing this, it's time to replace the water inlet valve.