the 3-inch probe is optimized for sensing ambient air

For technicians troubleshooting lockout issues

it is recommended to use a dedicated 40VA to 75VA 24V transformer to power the Carrier ZONEBB3ZAC01 and connected dampers to avoid overdrawing current from the indoor unit's control circuit

eliminating the risk of unburned gas discharge

Lochinvar & A.O. Smith 100093631 Ignitor 340155-7024 the 3-inch probe is optimizedThe Lochinvar & A. O. Smith 100093631 Ignitor is a critical hot surface igniter replacement designed for high efficiency gas fired equipment. This OEM igniter kit features a universal fit design, making it the primary service solution for restoring 120V ignition systems in commercial water heaters and domestic boilers. As the official direct replacement for part 6903768, this component ensures proper gas burner ignition and system reliability under