Resideo by HoneyWell L4064B2236/B Fan and Limit Controller Insert - 8-Inch

The Resideo by Honeywell L4064B2236/B fan and limit controller controls high limit and fan motor in all types of forced air heating systems. The bimetal sensing element turns the fan on and off according to plenum temperature, providing automatic and reliable operation for residential and commercial furnace applications.

Key Features:

• 8-inch insertion sensing element with 125°F fan-on, 100°F fan-off, and 200°F high limit factory settings
• Field adjustable fan and high limit settings with high limit range of 100-250°F, fan-on range of 65-215°F, and fan-off range of 50-200°F
• Manual fan switch that overrides the fan control to keep the fan running continuously
• Three wiring terminal options: push-in receptacles for stripped wire, female receptacles for 1/4 inch male flag connectors, and auxiliary screw terminals
• TRADELINE model with mounting adapters for easy installation and strain relief bushing to protect wiring from field abuse
• Adapts to many competitive mounting holes in replacement applications

The fan switch makes on temperature rise while the high limit switch breaks on temperature rise, providing critical safety protection against overheating. This model replaces older L4064A, B, and E series controllers, making it an ideal upgrade or replacement part for aging furnace control systems.