The answer to 'installation freezing up' is that a frozen HVAC system is a common problem that can be caused by a variety of issues. Symptoms include ice buildup on the coils, reduced airflow, and poor heating or cooling performance. Some common causes include low refrigerant levels, dirty air filters, airflow restrictions, and thermostat issues.
In many cases, the solution may be as simple as changing the air filter or clearing any blockages around the outdoor unit. However, more complex problems like refrigerant leaks or compressor failures will require professional HVAC service. It's important to address the issue promptly to prevent further damage and ensure your system is operating safely and efficiently.