Lennox 79J89 Limit Switch How do I verify if

How do I verify if the coil is burnt out

Internal Restoration: Replaces the critical paddle and seal assembly to stop bypass and internal leaking

this modern OEM replacement gasket is manufactured using advanced heat-resistant synthetic materials and does not contain asbestos

Visible Adjustment

ensuring a drop-in fit with existing mounting holes and standard spade connector terminals

Lennox 79J89 Limit Switch How do I verify ifThe Lennox 79J89 Limit Switch is a critical OEM replacement part designed for precise thermal regulation in Lennox residential and commercial furnaces. This 140 170F AUTO Limit Switch functions as a primary safety mechanism, monitoring internal plenum temperatures to prevent heat exchanger damage or unsafe operating conditions. Engineered with a 170F cut out temperature and a 140F cut in temperature, this automatic reset limit switch ensures the