replacing the entire 233-45515-00 assembly is the standard procedure to restore the thermocouple signal and gas valve hold-in circuit

providing a linear 1-6V output signal that is easily scaled by most industrial building automation systems

reducing motor torque requirements at startup

Noise Reduction: Automatically scales back fan speed during cooler ambient periods

while some kits include a black 300-650 range knob

Sporlan 953580 Interface Board 326010-701 replacing the entire 233-45515-00 assemblyThe Sporlan 953580 Interface Board, also known as the IB G Control Board, is the advanced technical successor for the discontinued Sporlan 952956. Developed for precision refrigerant flow management, this HVAC interface module converts 0 10VDC or 4 20mA analog input signals into digital step motor pulses to drive electronic expansion valves. As an all in one replacement, the 953580 consolidates the functionality of previous IB 1, IB 2, IB 3, and IB 6