Visible slime, mold, or heavy scale buildup inside the ice maker or bin.

Safety first: Disconnect power and close water supply. Wear gloves and eye protection when using cleaners and sanitizers.

Steps:

• Remove ice: Discard all ice from the bin and evaporator area.
• Descale: Run a full cleaning cycle with Manitowoc ice machine cleaner, following the manual. Manually scrub heavily scaled areas with a soft brush.
• Sanitize: After descaling and rinsing, run a sanitize cycle using Manitowoc‑approved sanitizer. Wipe down bin walls, door gaskets, and splash areas.
• Increase cleaning frequency: In high‑use or warm environments, schedule cleaning at least every 3 months, or more often if local water is poor.