What is the effect of an open internal overload protector in a hermetic compressor?

An open internal overload protector in a hermetic compressor serves as a protective mechanism for the compressor's motor. When this overload protector is tripped or open, it interrupts the electrical circuit, preventing current from flowing to the motor. As a result, the compressor will not start. This is crucial because the overload protector is designed to prevent damage by stopping the compressor from operating when it senses an overheating condition or other potentially harmful situations.

In this scenario, the open overload protector ensures that the compressor remains off, which is a safety measure to avoid further damage or failure of the compressor due to excessive heat or electrical issues. This operation is essential for maintaining the longevity and reliability of the HVAC system.