This HVAC replacement fan blade features a 3-blade configuration with a 28-degree pitch

the thermocouple is likely failing to generate the 30mV threshold required to hold the valve open

though ensuring the mixing port is accessible for future calibration is recommended

This discharge air temperature sensor is specifically calibrated for a range of 80-130 degrees F

While designed for pneumatic controls and fan parts

Trane BRD4785 Circuit Board 326010-701 This HVAC replacement fan bladeThe Trane BRD4785 (also identified as the UC210 Printed Circuit Board) is a critical OEM replacement component designed for high level communication and control within Trane HVAC systems. As a veteran grade HVAC control board, the Trane BRD04785 facilitates precise electrical connections and logic processing to maintain optimal system efficiency. This specific UC210 controller is frequently utilized in commercial and high end residential applications