my ice tastes weird and plastic-y even after cleaning, how do i get rid of the taste?

Diagnosis

The "plastic" taste in the Antarctic Star AZ-I11A is typically caused by two distinct issues: residual volatile organic compounds (VOCs) from the manufacturing process of the internal polyethylene tubing and the reservoir, or the development of a microscopic biofilm layer. Because this model uses a compact, sealed cooling system, air pockets can trap manufacturing residues that are not flushed out by a standard water rinse. If the unit is new, you are tasting the off-gassing of the food-grade plastics. If the unit has been used for several months, the taste is likely a bacterial biofilm that has adhered to the interior walls of the water reservoir and the ice-dropping chute. This biofilm protects bacteria from the standard "self-clean" cycle, which often doesn't reach the crevices where the water line connects to the pump, resulting in a stale, chemical-like flavor profile that persists even after a superficial cleaning.

How to Fix It

To fully neutralize the plastic taste and strip away biofilm, you must perform a chemical deep-purge. Follow these exact steps:

1. Complete Disassembly: Unplug the unit from the wall. Remove the ice basket and the removable water reservoir. If your model has a removable top grate, lift it out carefully.
2. Baking Soda Soak: Mix 3 tablespoons of baking soda into one gallon of warm (not boiling) distilled water. Submerge the water reservoir and the ice basket in this solution for at least 4 hours. The alkaline nature of the baking soda neutralizes the acidic plastic residues.
3. The Vinegar Flush: Fill the reservoir with a solution of 50% white distilled vinegar and 50% filtered water. Pour this directly into the tank. Plug the machine in and run a full ice-making cycle. Do not discard the ice; let it freeze completely, then dump it. This acidity breaks down mineral scale and kills lingering odors in the internal tubing.
4. The Pure Water Purge: Fill the reservoir with distilled water only. Run 4 consecutive ice-making cycles. After each cycle, dump the ice and rinse the basket with cold water. This ensures all vinegar and baking soda residues are completely evacuated from the pump and lines.
5. Chute Scrub: Use a cotton swab dipped in a mixture of lemon juice and water to scrub the interior of the ice-dropping chute and the rubber gaskets around the lid, as these are prime areas for odor-trapping residue.

If That Didn't Work

• Switch to Bottled or Filtered Water: The AZ-I11A is highly sensitive to the chlorine and fluoride levels in municipal tap water. These chemicals can react with the plastic lining of the reservoir, amplifying the "plastic" taste. Using distilled or reverse-osmosis water removes the catalyst that makes the plastic taste more prominent.
• Deep-Clean with Citric Acid: If vinegar isn't strong enough, purchase food-grade citric acid powder. Mix 2 tablespoons into a quart of warm water and run a full cycle. Citric acid is a more powerful chelating agent than vinegar and can strip stubborn manufacturing films that baking soda misses.
• Air-Dry Cycle: Leave the lid open and the reservoir removed for 24 hours in a well-ventilated area. Sometimes the "plastic" smell is actually trapped humidity and stagnant air inside the chassis that needs to be fully evaporated to reset the olfactory profile.
• Check the Water Filter (if applicable): If you have added an aftermarket filter to your water line, the filter carbon may be exhausted or "channeling," which allows impurities through while adding a metallic or chemical taste to the water. Replace the filter cartridge immediately.

Heads Up

• Avoid Harsh Chemicals: Never use bleach or strong dish soaps inside the water reservoir; these can permeate the plastic and create a permanent chemical taste that is impossible to remove.
• Prevent Biofilm: To prevent the return of the taste, empty the water reservoir every 24 hours. Do not let water sit stagnant in the machine for more than one day.
• Temperature Control: Ensure the unit has at least 6 inches of clearance on all sides. If the unit overheats, the internal plastics can warm up, increasing the rate of off-gassing and making the ice taste more like plastic.
• Weekly Rinse: Once a week, wipe the interior of the reservoir with a clean, damp microfiber cloth to remove the "slime" layer before it hardens into a biofilm.