Viessmann 7861491 Flame Sensor 318423-701 5-inch leads with 200°C rated

5-inch leads with 200°C rated insulation provide ample length and thermal protection for tight burner vestibules

Common Questions: How do I confirm if the 100111904 is the right board for my boiler

This 24Vac motorized damper features a power closed/spring return open configuration

the unit features a manual override capability

this valve is easily integrated with various pneumatic or electric actuators

Viessmann 7861491 Flame Sensor 318423-701 5-inch leads with 200°C ratedWhen you're troubleshooting a Viessmann Vitodens unit that keeps hitting an F2 flame loss or L2 ignition lockout, your first check should be the Viessmann 7861491 Flame Sensor. Also known as an ionization electrode, this nickel iron (NiFe) component is the backbone of the flame rectification circuit. Its engineered specifically for CM2 series boilers, including models like the CM20490, CM20491, and CM20493. This isn't just a dummy rod; its a precision