this is due to debris in the pilot orifice or improper seating of the core spring

With a fixed differential of 4

How do I confirm the rotation of this blade

Can I use Teflon tape on the 1/8-27 NPT threads

York S1-031-02959-000 Control Board Els PW 17895 this is due to debrisThe York S1 031 02959 000 Blower Control Board is a critical OEM replacement part engineered for high performance management of blower motor timing and system airflow. Designed specifically for York, Coleman, and Luxaire furnaces and air handlers, this HVAC furnace control board regulates the start stop sequences of the fan motor to ensure efficient heating and cooling cycles. As a veteran grade integrated furnace control, it monitors safety circuits