HVAC Electrical Practice Exam 2025 – Complete Study Resource

Question: 1 / 400

What does a high-pressure switch do in an HVAC unit?

Increases cooling capacity

Monitors humidity levels

Shuts down the compressor if refrigerant pressure exceeds safe limits

The function of a high-pressure switch in an HVAC unit is crucial for system protection and efficiency. It is designed to monitor the pressure of the refrigerant within the system. When the pressure exceeds a predetermined safe limit, the high-pressure switch activates to shut down the compressor. This prevents excessive pressure that could lead to damage or failure of the compressor and other components, ensuring the safety and longevity of the HVAC system.

Maintaining appropriate refrigerant pressure levels is essential for optimal system performance, as both high and low pressures can lead to operational problems. Therefore, the role of the high-pressure switch is pivotal in maintaining safe operating conditions within the unit.

Get further explanation with Examzify DeepDiveBeta

Regulates airflow

Next Question

Report this question

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy