Trane SWT1277 Limit Switch If the "check system" light

If the "check system" light on the access panel is flashing or you hear a continuous snapping/arcing sound

Color-Coded Identification: the brown spring designation allows for quick visual verification in the field

Enhanced Motor Performance: Maintains consistent electrical phase shift to optimize compressor startup and operational efficiency

Broad Compatibility: Fits a wide range of Amana and Goodman furnace parts

Integrating this Danfoss refrigeration orifice into your TXV setup optimizes evaporator efficiency and protects the compressor from liquid slugging by stabilizing the injection process

Trane SWT1277 Limit Switch If the "check system" lightThe Trane SWT1277 Limit Switch is a critical safety component designed for precise thermal regulation in Trane and American Standard HVAC furnaces. As a high limit automatic reset switch, it monitors the supply air and heat exchanger temperatures to prevent hazardous overheating. This genuine OEM furnace limit switch features a 3 inch insertion length, ensuring accurate sensing deep within the plenum or blower housing. Operating on a normally closed