What are the symptoms of a failing spark electrode

Can this be used for both single and dual temperature thermostats

Automatic Reset: Simplifies system recovery by closing the circuit once temperatures drop to the 140°F setpoint

Field Reliability: Durable metal housing and high-grade bimetal sensors reduce call-backs and early failure

Visible soot

Johnson Controls P20CA-146 Pressure Control Els PW 17895 What are the symptoms ofThe Johnson Controls P20CA 146 Pressure Control is a heavy duty, high pressure cutout designed for air conditioning and refrigeration systems. Engineered for high side protection, this adjustable pressure switch features a wide operating range from 100 to 425 PSI, ensuring reliable performance in demanding HVACR applications. Use this control when you need an automatic reset mechanism that triggers "open" on a pressure rise at 300 PSI. With its 19 PSI