the voltage may be jumping to ground through a degraded ignition cable

When performing a combustion analysis

Always verify your controller's requirements before using an igniter for flame sensing

For contractors servicing York furnace or air conditioning equipment

A.J. Antunes 8024204046 Pressure Switch Els PW 17895 the voltage may be jumpingThe A. J. Antunes 8024204046 Pressure Switch is a professional grade air differential pressure switch engineered for field ready reliability in HVAC and industrial combustion systems. This SPDT (Single Pole Double Throw) switch provides an adjustable set point range from 0. 17" to 6. 0" WC, allowing for precise calibration across a variety of pressure sensitive applications. Technicians often utilize this model for monitoring air handling units,