Check the label on your existing part for the "L180-20" designation

While the electrical specs are the priority

distinguishing it from other colors like white (3/4") or red (1-1/2")

If your HVAC system has power but the blower fan and ignition cycle fail to start despite the door being closed

When replacing 354370 gaskets

York S1-024-19082-032 Sequencer Check the label on yourThe York S1 024 19082 032 Sequencer is a critical 24V component designed for managing the staged activation of heating elements in electric furnaces and air handlers. Built for high reliability circuit control, this 24V heat sequencer prevents electrical overloads by ensuring heater banks and blower motors engage in a specific timed sequence rather than simultaneously. As a heavy duty HVAC sequencer relay, it is frequently used in York and Luxaire