Viessmann 7816460 Cad Cell 326058-755 the diaphragm has likely failed

the diaphragm has likely failed

The RT121 series utilizes a bellows system designed to withstand the rigors of harsh environments

As a direct replacement for the legacy 211941-000

Simplified Diagnostics: Resolves common sensor failure issues and erratic temperature readings

this low pressure gas valve operates on a standard 24V gas valve circuit

Viessmann 7816460 Cad Cell 326058-755 the diaphragm has likely failedThe 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