or the control board flashing a specific pressure switch fault code (typically a 2 or 3 flash code on many Lennox units)

Improved Efficiency: Restores intended burner performance

For technicians servicing Utica or Dunkirk hydronic systems

always check the boiler rating plate for manifold pressure requirements before installation

Single Throw) controller is engineered to provide a high-limit cutout

Heil Quaker ICP 1173706 Fan Blade Els PW 17895 or the control board flashingThe Heil Quaker ICP 1173706 Fan Blade is a critical replacement component engineered for high performance air movement in residential and commercial condensing units. This 20 inch HVAC fan blade features a precision engineered 34 degree pitch and 3 blade configuration, optimized for clockwise (CW) rotation. Designed for efficiency, it utilizes a 1 2 inch bore positioned on the intake side, ensuring a secure fit on standard motor shafts. Replacing a