meaning it will remain in its last position if the 24V supply is interrupted

The Johnson Controls P47AA-1 is a commercial-grade steam pressure limit control designed for high-limit cutout or operating control in low-pressure steam heating systems

Techs typically wire this to M1 (Power) and M6 (Common) terminals

and 62-25078-02

this HVAC fan limit control utilizes a standard SPDT contact arrangement rated for 120 VAC applications

Nordyne 664350 TXV Valve THPU32HP7Y meaning it will remain inThe Nordyne 664350 is a high performance 4 ton R410A thermostatic expansion valve engineered for precise refrigerant metering in residential and light commercial split system evaporators. This genuine OEM component is designed to maintain target superheat across varying load conditions, protecting the compressor from liquid slugging while maximizing heat transfer efficiency. As a direct replacement for Nordyne 664350R, it features a balanced port