the 100208390 features a highly sensitive diaphragm and a snap-acting internal switch that prevents furnace short cycling caused by fluctuating flue pressures

Featuring a manual reset button

Compact Footprint: A 244mm motor height and standard 145mm frame ensure fitment in tight air handler cabinets and blower housings

Complete Assembly Kit: Includes necessary O-rings and rubber caps (replaces 78L3201) for a secure

For large-scale HVAC and building automation systems

Heil Quaker ICP 1183599 Circuit Board 321894-709 the 100208390 features a highlyThe Heil Quaker ICP 1183599 Circuit Board is a critical OEM replacement part designed for high performance furnace control across several International Comfort Products brands, including Tempstar, Arcoaire, Comfortmaker, and KeepRite. Engineered to handle a 24 VAC input at 60Hz, this integrated furnace control manages the ignition sequence, blower motor timing, and safety circuit monitoring. Technical specifications confirm it replaces legacy part