Viessmann 7861491 Flame Sensor Els PW 17895 Key Benefits Enhanced Durability: The

Key Benefits Enhanced Durability: The NEMA 4X watertight enclosure provides exceptional protection in corrosive or outdoor environments

Use a multimeter to check for electrical resistance (ohms)

the 16U10 kit is a comprehensive assembly

Corrosion Resistance: High-grade bronze construction facilitates reliable performance in various water conditions

Viessmann 7861491 Flame Sensor Els PW 17895 Key Benefits Enhanced Durability: TheWhen 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