Lennox 49L88 Auto Limit Switch F - 155-185

The Lennox 49L88 is an automatic limit switch designed for HVAC furnace applications. This safety control features a temperature range of 155°F (cut-in) to 185°F (cut-out), providing critical overheat protection for residential and light commercial heating systems.

Key Features:

• Automatic reset limit switch for reliable operation
• Cut-in temperature: 155°F
• Cut-out temperature: 185°F
• Direct replacement for Lennox furnace systems
• Ensures safe furnace operation by preventing overheating

This limit switch is an essential safety component that monitors the temperature inside the furnace plenum. When temperatures exceed the safe operating range, the switch automatically shuts down the burner to prevent damage to the heat exchanger and other critical components. Once the temperature drops back to the safe range, the switch automatically resets, allowing normal operation to resume.