How do I test the 10728330 for continuity

The Johnson Controls T-4002-122 is a professional-grade terminal connector engineered specifically for T-4002 series high-volume thermostats

Calibrated Range: Provides a stable 12" to 28" water column (WC) adjustment window for mid-pressure applications

this Zettler relay ensures consistent electrical switching and circuit stability during heavy-duty operation

While the fitting itself can handle up to 5

York S1-026-34726-001 Limit Switch How do I test theThe York S1 026 34726 001 Limit Switch is a critical safety component designed for precise thermal regulation within York, Luxaire, and Coleman HVAC systems. This SPST (Single Pole Single Throw) fixed temperature switch operates on a 110 140F automatic reset cycle, meaning it breaks the electrical circuit if the plenum temperature exceeds 140F and restores continuity once it drops to 110F. As a direct replacement for S1 2702 314P A, this OEM component