An air conditioner unit does not freeze because of a specific outdoor ambient room temperature, but rather when the temperature of the indoor evaporator coil drops below 32 degrees Fahrenheit (0 degrees Celsius). This sub-freezing coil temperature is typically triggered when outdoor temperatures drop below 60 degrees while the AC is running, or when severe airflow restrictions (such as a dirty filter or blocked vents) prevent warm indoor air from passing over the coils. When coils drop below freezing, ambient moisture turns into solid ice. Verification: Monitor outdoor thermometers to ensure temperatures remain above 60 degrees before running cooling systems.
1 votes
Marked as accepted