Which wash cycles support the Sanitize option?
The Sanitize option is available only with the Heavy, Auto, Normal, and Half Load wash cycles. Press the 'Sanitize' button to activate it, and the Sanitize LED will light when sanitation requirements are met. The Sanitize option is not available for Delicate Wash, Express Wash, or Rinse & Hold cycles. (Page 12)
From the official Bosch Ascenta 300 Series Dishwasher manual, page 12
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