OEM Integrity: Original equipment manufacturer part ensures compliance with original safety listings and operating specifications

which are the primary causes of premature motor failure and mechanical noise

A normally closed switch like this should show 0 ohms at room temperature

blower motor failure

Set your multimeter to the Ohms (

Lennox 15M43 Rollout Switch OEM Integrity: Original equipment manufacturerThe Lennox 15M43 Rollout Switch is a critical flame rollout safety switch designed for Lennox furnace repair and maintenance. Engineered to actuate at 270 degrees Fahrenheit (with a + 12 F tolerance), this OEM replacement part monitors for abnormal heat conditions in the burner compartment. As an SPST furnace switch (Single Pole Single Throw), it effectively opens the electrical circuit to the gas valve when temperatures exceed its calibrated