What does a diamond symbol mean on a whirlpool dishwasher?

The diamond symbol on a Whirlpool dishwasher typically indicates the "High-Temperature Wash" option. This setting uses hotter water to help sanitize dishes and improve cleaning performance, particularly for items like heavily soiled pots and pans. It's often recommended for ensuring better hygiene and removing tough stains. Always refer to your specific model's manual for detailed information on symbols and settings.