Lennox 66J78 - (66J7801) Secondary Limit / Rollout Switch, 350°F Actuation, 310°F Reset
Ensure safe and efficient operation of your HVAC system with the Lennox 66J78 Secondary Limit / Rollout Switch. Designed to protect your furnace from overheating, this reliable safety component actuates at 350°F and automatically resets at 310°F, helping to maintain consistent temperature regulation and prevent system damage.
Engineered for compatibility with a wide range of Lennox heating units, the 66J7801 switch detects abnormal heat levels around the burner area and interrupts electrical current to shut down the system when necessary. Once temperatures return to a safe range, the switch resets itself, allowing the system to resume normal operation without manual intervention.
Key Features:
- Part Number: 66J78 / 66J7801
- Function: Secondary Limit / Rollout Safety Switch
- Actuation Temperature: 350°F
- Reset Temperature: 310°F
- Application: Overheat protection for gas furnaces
- Automatic Reset: Enables seamless recovery after temperature normalization
- OEM Quality: Manufactured to Lennox specifications for dependable performance
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Stay protected and maintain system integrity with the Lennox 66J78 – your safeguard against heat-related malfunctions.