The York S1-025-30877-000 is an OEM electric heating element engineered for high-performance thermal transfer within Source 1 heat kits

this ECM motor (Electronically Commutated Motor) provides precise airflow control by modulating speeds to meet real-time system demands

500 PSIG Maximum High Controllable Pressure

This is specifically used in applications where centralized control is required and local tampering with temperature or humidity settings must be prevented

How do I resolve a 1-flash diagnostic code on this board

Trane SWT1274 Limit Switch 321142-301 The York S1-025-30877-000 is anThe Trane SWT1274 Limit Switch (also listed as SWT01274) is a high precision HVAC safety control designed for furnace high limit protection. As a veteran grade OEM furnace part, this thermal limit switch is engineered to monitor the supply plenum temperature, providing a critical fail safe against heat exchanger damage. It operates with a fixed factory setting that opens at 125F to break the heating circuit and closes at 95F to allow for an automatic