This is a clear sign the unit needs immediate replacement

Low VA Coil: Optimized 24V control circuit performance reduces heat and parasitic energy draw

Enhanced Safety Logic: The manual reset functionality protects equipment and structures by requiring a site inspection before the system resumes operation

This is a Normally Open (NO) switch

Common Questions Is the Danfoss 117U1021 interchangeable with the 117U6021

Robertshaw 1751-721 Wiring Harness This is a clear signThe Robertshaw 1751 721 Ignitor Sensor Wiring Harness is a critical field service component engineered for flame rectification systems in residential and commercial heating applications. This 48 inch 2 wire ignition harness provides the necessary link between the ignitor sensor assembly and the ignition control module, ensuring high integrity signal transmission for consistent flame sensing. Designed for high heat environments, the 1751 721 harness