What component starts the compressor again if the low-pressure cutout cycles it off?

The low-pressure cutout is a critical safety device in refrigeration and air conditioning systems. Its primary function is to monitor the pressure within the system and to prevent the compressor from running when the pressure drops below a certain threshold. If the pressure becomes too low, indicating a potential issue such as a refrigerant leak or inadequate refrigerant charge, the low-pressure cutout will activate and cycle off the compressor to protect it from damage due to insufficient lubrication and cooling.

When the system pressure increases back to an acceptable level, the low-pressure cutout will reset itself and enable the compressor to restart automatically. This resetting mechanism ensures that the compressor operates safely without manual intervention when conditions improve. The low-pressure cutout thus directly manages the cycling of the compressor based on pressure levels, reinforcing its role in the overall system operation.

In contrast, high-pressure switches monitor the upper limits of system pressure, thermostats control temperature settings, and compressor relays are often associated with powering the compressor on and off but do not directly engage with pressure levels in the same protective manner.