Lennox 46K69 Fan and Limit Control

The Lennox 46K69 is a fan and limit control designed for use in residential and light commercial heating systems. This control automatically manages both the blower fan operation and high-limit safety functions to ensure efficient and safe furnace operation.

Key Features:

• Dual-function control combining fan and limit operation in one unit
• Automatically starts and stops the blower fan based on plenum temperature
• High-limit safety function shuts down burner if excessive temperatures are detected
• Direct replacement for Lennox furnaces requiring part number 46K69
• Also cross-references to R40154B006 for compatibility verification

This control is engineered specifically for Lennox heating equipment and provides reliable temperature sensing and switching to maintain optimal comfort while protecting the system from overheating conditions.