Lennox 52M73 - (R20017402) Rollout Switch, Excel
Ensure the safety and reliability of your heating system with the Lennox 52M73 (R20017402) Rollout Switch. This OEM replacement safety component is designed specifically for use in Lennox furnaces and heating systems. It plays a critical role in protecting the unit from overheating by monitoring and responding to unsafe temperature conditions caused by burner flame rollout.
Key Features:
- OEM Part Number: R20017402
- Model: 52M73
- Type: Manual reset rollout switch
- Function: Detects abnormal heat levels and interrupts power to prevent damage or fire
- Application: Typically mounted near the burner compartment
- Compatibility: Engineered for use in select Lennox and allied brand heating units
- Build Quality: Durable construction ensures long-term performance and safety
- Mounting Style: Surface-mount design for easy installation and replacement
Operational Role:
The rollout switch is a vital limit safety device that opens the electrical circuit when it detects excessive temperatures—often due to venting obstructions or cracked heat exchangers. This prevents hazardous operating conditions by shutting down the burner, prompting necessary inspection or maintenance.
Installation Notes:
- Only qualified HVAC technicians should install or replace rollout switches
- Always diagnose root cause of rollout trip before resetting or replacing the switch
- Designed for seamless fit in compatible Lennox models; consult equipment manual for confirmation
Why Choose Genuine Lennox Parts?
Using authentic Lennox components like the 52M73 Rollout Switch ensures your system operates according to original design specifications. This preserves efficiency, ensures warranty compliance, and upholds system safety standards.
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