Common Questions How do I know if my furnace limit switch is bad

Precision Alignment: Pre-configured 2-cell assembly ensures exact burner-to-heat-exchanger positioning for uniform heat distribution

or the furnace short cycling—shutting down shortly after ignition before reaching the thermostat setpoint

Housed in a rugged 18-gauge NEMA 1 galvanized steel enclosure with welded seams

York S1-025-17620-017 Pressure Switch Common Questions How do IThe York S1 025 17620 017 Pressure Switch is a high limit safety control designed for precise HVAC system protection. Engineered for high pressure monitoring, this dual action pressure switch features a fixed 380 PSI open setpoint to prevent compressor damage and a 300 PSI close reset point for automated system recovery. As a genuine York OEM replacement part, it ensures seamless integration and provides the exact electrical specifications required