Resolving ice buildup in an HVAC system typically involves identifying and addressing the underlying cause. This may involve cleaning or replacing air filters, inspecting and cleaning the evaporator coil, checking and adjusting refrigerant levels, and ensuring proper drainage. In some cases, it may be necessary to defrost the system by turning off the compressor and allowing the ice to melt. It’s recommended to consult a qualified HVAC technician to diagnose and resolve ice buildup issues, as improper repairs can lead to further damage or safety risks.