This typically indicates a fouled seat or a failed thermostatic bellows

ensuring that the inducer motor establishes the correct static pressure before the ignition sequence begins

typical of agricultural and industrial wash-down zones

Advanced Logic: Microprocessor-based timing manages the ignitor

Frequent tripping usually indicates high current draw from a failing start capacitor

Viessmann 7816460 Cad Cell 323613-751 This typically indicates a fouledThe Viessmann 7816460 Cad Cell is a critical flame sensor designed for precise oil burner monitoring in residential and commercial heating systems. As a high performance cadmium sulfide photocell, this component acts as a vital safety interface, sensing light in the visible spectrum to verify ignition and continuous combustion. When the burner fires, the Viessmann cad cell resistance should typically drop below 1,600 ohmsoften settling between 300 and