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also identified as the 200RB3T3T solenoid valve
this component is engineered to pull air through the heat exchanger and expel combustion byproducts safely through the flue
When you're out in the field and the control board loses its signal
the switch trips and locks out
Viessmann 7817692 326058-758 also identified as the 200RB3T3TWhen you are opening up a Viessmann Vitodens 200 WB2A or Vitocrossal CU3A for annual service or a burner teardown, the Viessmann 7817692 Burner Gasket is a non negotiable replacement item. This OEM Viessmann burner door gasket is engineered specifically for the WB2A 44 and WB2A 60 models, ensuring a precise, gastight seal between the burner assembly and the heat exchanger. In high output condensing systems, maintaining the integrity of the combustion