it monitors the heat exchanger for overheating symptoms and will automatically open the circuit to de-energize the gas valve if temperatures exceed the 140°F threshold

This high-accuracy metering component is essential for maintaining stable superheat and maximizing evaporator efficiency in commercial refrigeration and air conditioning systems

Whether you are servicing FS7-4

Simple Field Installation: Facilitates rapid replacement on 1-pipe or 2-pipe pneumatic systems without requiring specialized tools for mounting

Durable Construction: High-density plastic resists chemical exposure and mechanical wear common in mechanical rooms

Aaon R55380 Wire Plug it monitors the heat exchangerThe Aaon R55380 Wire Plug is a critical genuine OEM compressor plug and wire assembly designed for high amperage HVACR applications. Engineered to meet strict Aaon replacement part standards, this assembly utilizes 10 gauge wiring to ensure maximum current carrying capacity and thermal stability during compressor startup and continuous operation. As a direct fit HVAC compressor wire harness, it eliminates the high resistance and potential failure