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

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

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

Common Questions Is the Parker 75740 compatible with both 50Hz and 60Hz cycles

the C2043A-1 is the control valve body casting only

Nordyne 664350 TXV Valve THPU32HP7Y this HVAC fan limit controlThe 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