Is this part compatible with older 1970s style Honeywell actuators

If the pressure is sufficient but the switch remains open (infinite resistance)

Robust Safety Features: Internal thermal protection prevents overheating

ensuring the system meets factory-rated heat rejection specifications

the EF23BS121 typically comes as a complete assembly with the 24V coil included for immediate installation

Modine 3H0346700011 Conversion Kit Els PW 17895 Is this part compatible withThe Modine 3H0346700011 Conversion Kit is a critical field service component designed for technicians needing to transition natural gas to liquid propane (NG to LP) on high capacity heating equipment. This OEM Modine gas conversion kit is specifically engineered for the Modine PDP350 series and other compatible Modine PDP heaters requiring precise manifold pressure adjustments and orifice resizing. By replacing the existing burner orifices and gas