When diagnosing a pilot light that won't stay lit

The Secop Diversitech 117U6020 Start Relay is a high-performance 120V Danfoss OEM current relay engineered for precision in residential and commercial refrigeration systems

making it suitable for heavy-duty HVAC mechanical loads

this kit effectively prevents galvanic corrosion

Its compact DIN-style footprint allows for efficient installation in standard compressor terminal housings

Resideo 391937 Conversion Kit When diagnosing a pilot lightThe Resideo 391937 Conversion Kit is a professional grade solution for field converting gas valves from Natural Gas to LP (liquid propane). Engineered for technicians servicing V400, V800, VS820, and VS821 Series combination gas controls, this kit provides a precise 8" to 12" W. C. adjustment range. This part is functionally identical to the 391937 U and is designed exclusively for standard and slow opening valves; it is not compatible with step