Description
Lennox 47W64 Limit Control L210-30F Overview
The Lennox 47W64 is an OEM limit control designed to protect furnaces and heating systems from overheating conditions. Designated as model L210-30F, this limit switch opens the circuit at 210°F and features a 30°F differential, automatically resetting at 180°F to restore normal operation once safe temperatures are reached. It is a direct-fit replacement engineered to Lennox specifications, ensuring reliable compatibility and performance in Lennox heating equipment.
Key Features
- OEM Lennox replacement limit control — SKU 47W64
- Opens (trips) at 210°F to protect against overheating
- 30°F differential — resets at 180°F for automatic recovery
- Model designation: L210-30F
- Designed for use in Lennox furnaces and heating systems
- Direct OEM replacement for accurate fit and dependable operation
- Helps prevent heat exchanger damage and fire hazards caused by excessive temperatures
How It Works
The limit control monitors the temperature within the furnace heat exchanger plenum. When temperatures rise to the 210°F set point — indicating a potentially unsafe condition such as a blocked filter or restricted airflow — the limit control opens the circuit, shutting off the burner to prevent damage or hazard. Once temperatures drop by 30°F to the 180°F reset point, the control closes and normal furnace operation resumes.
Application
- Compatible with select Lennox gas furnaces and heating systems
- Ideal for service technicians performing OEM-quality repairs and maintenance
- Verify compatibility with your specific Lennox model before installation
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