What happens if the refrigerant in an A/C system is too low?

When the refrigerant in an A/C system is too low, the low-pressure cutoff switch engages as a safety measure. This switch is designed to protect the compressor from damage that can occur when there is insufficient refrigerant in the system. Low refrigerant levels lead to lower pressure in the system, and when the pressure drops below a certain point, the low-pressure cutoff switch prevents the compressor from running. This is crucial because operating a compressor without enough refrigerant can cause it to overheat and fail.

This safety feature helps to maintain the integrity and longevity of the system, ensuring that it only operates under safe conditions. It’s important to monitor refrigerant levels regularly and address any leaks or issues that cause low refrigerant to avoid triggering this cutoff switch frequently.