Lennox 13P93 Fan Limit Switch 30067439-890 This HVAC safety cut-out is

This HVAC safety cut-out is engineered with a fixed setpoint of 30 PSI Open and 60 PSI Close

Manual Reset Functionality: Requires technician intervention after a high-limit event

Ensure your HVAC burner maintenance includes a physical inspection of this sensor for cracks or carbon fouling to avoid unexpected downtime

but you should always verify the part number against your specific burner assembly breakdown to ensure compatibility

though following the original wiring diagram is recommended for consistency

Lennox 13P93 Fan Limit Switch 30067439-890 This HVAC safety cut-out isMaintain precise thermal regulation and safety standards in forced air heating systems with the Lennox 13P93 Fan Limit Switch. This genuine OEM component is the direct replacement for 11M40 (as well as 10H37 and 43F4501) and is essential for managing blower activation and high limit protection. Engineered by Honeywell (Model L4064B2210), this HVAC combination fan and limit control features an 11. 5 inch insertion length and a 3 4 inch diameter probe