If 24V is present but the contacts do not pull in

Common Questions about the KG8 Ball Joint What rod size is compatible with the KG8

The Reznor 209339 Spark Electrode (also identified as PSE-RZ9) is the direct OEM replacement engineered to deliver consistent high-voltage arcing to ignite the gas-air mixture across various unit heater and air handler platforms

replacing the factory wiring to restore reliable motor communication

though a failing internal relay in the control board can also be the culprit

Lochinvar & A.O. Smith 100271315 Limit Switch 30067439-890 If 24V is present butThe Lochinvar & A. O. Smith 100271315 Limit Switch is a critical safety component engineered for high performance hydronic and water heating systems. As a veteran technician knows, maintaining the integrity of the safety loop is non negotiable. This OEM high limit switch is designed to monitor outlet water temperature and provide a positive safety shutdown by interrupting the electrical circuit if temperatures exceed the factory set threshold,