What would cause a Air Conditioning unit to freeze?
If the unit is used to cool a hot room (above 75 degrees) and the thermostat is set at or below 60 degrees, this would cause the condenser coils to freeze and damage the compressor. That is why it is recommended to cool a hot room gradually rather than expect instant gratification out of your air conditioning unit. Typically when an Air Conditioning unit has been frozen, it requires a service call to repair the compressor due to the damage of the refrigerant not flowing and the compressor overheating.
