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For technicians performing a furnace blower repair
Service Efficiency: Integrated front charge port allows for easy manifold gauge connection during maintenance
We recommend verifying the dimensions and terminal type of your existing electrode to ensure a perfect fit
Universal 4-Terminal Design: Simplifies wiring into existing contactors and limit controls
Lennox 10M66 Limit Switch 320074-702 For technicians performing a furnaceThe Lennox 10M66 Limit Switch is a critical safety component engineered for precise thermal monitoring in high efficiency gas furnaces and air handlers. For technicians diagnosing a Lennox furnace limit switch opening prematurely or failing to reset, this SPST (Single Pole Single Throw) thermal sensor provides the exact calibration required for OEM compliance and system safety. Operating on a normally closed circuit, the 10M66 is designed to break the
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