If the stem moves freely but the flow is blocked

This model is a direct cross-reference for 1372125 and 21-513

Precision Actuation: Calibrated at 1

this unit maintains reliable 0 to 95% stroke positioning in demanding commercial environments

By utilizing integrated micro-controllers

Lennox 56M61 Circuit Board R-410A If the stem moves freelyThe Lennox 56M61 is a genuine OEM ignition control circuit board designed for high performance residential and commercial HVAC units. Operating at 208 240V, this board serves as the primary intelligence for the heating ignition sequence, precisely managing the flame sensor feedback, gas valve calibration, and induction blower timing. As a direct Lennox replacement part, it eliminates the communication errors and voltage fluctuations often associated