Watch for these warning signs: low or declining ice production; unusual noises such as rattling, grinding, or loud humming, which often point to problems with the condenser fan, compressor, or pumps; excessive frost or condensation buildup, which can signal door seal or temperature control issues; water leaking around the base of the unit; or ice that appears cloudy, small, or malformed. Poorly maintained machines can also develop bacteria, mold, and other contaminants that affect ice quality and create health code risks. If you notice any of these, contact Polar for a diagnostic before the issue escalates.