This deluxe-level mechanical relay features a full suite of diagnostic tools

and uneven zone temperatures

Common Questions How do I know if my Nordyne 626464 needs replacement

Can I bypass the 626541R rollout switch for testing

Trane SWT1277 Limit Switch This deluxe-level mechanical relay featuresThe 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