What occurs at 610 psig in an R-410A system?

When discussing an R-410A system, reaching a pressure of 610 psig is indicative of conditions that would trigger the high-pressure switch to open. This high-pressure switch is a vital safety feature designed to protect the system from excessive pressure, which can lead to system failure or damage.

At a pressure of 610 psig, the operational limits of the refrigerant are likely being exceeded, prompting the high-pressure switch to engage and deactivate the compressor to prevent further increase in pressure. This feature helps maintain safe operating conditions and protects both the equipment and the environment from the potential hazards of overpressure scenarios.

Other options, like the low-pressure switch opening, occur at much lower pressures. The low side pressure does not stabilize around a high reading like 610 psig, and the system beginning to leak typically correlates with signs of malfunction rather than a specific pressure threshold like 610 psig.