Visible mold, slime, or discoloration inside the reservoir or on internal surfaces.

Safety first: Unplug the unit. Wear gloves if mold is extensive.

• Drain and disassemble: Remove the ice basket and drain all water from the reservoir.
• Scrub surfaces: Clean all accessible surfaces with warm water and mild detergent, then scrub with a soft brush and a vinegar solution to remove biofilm.
• Sanitize: Mix a food-safe sanitizer or a weak bleach solution (1 tablespoon unscented bleach per gallon of water). Wipe surfaces, then rinse thoroughly with clean water.
• Dry completely: Allow the unit to air dry with the lid open before refilling.
• Regular maintenance: Clean the unit at least once a month, or more often in warm climates.