Lennox 10M77 Limit Control 320788-703 Standardized Diagnostics: Features an onboard

Standardized Diagnostics: Features an onboard LED indicator for rapid troubleshooting of status codes

intermittent loss of communication with the thermostat

Key Benefits: High Flow Efficiency: Features a high 13 Cv rating to ensure maximum throughput for water and air systems

this assembly includes the integrated hub and necessary set screws for immediate installation on a standard 1/2-inch HVAC motor shaft

Lennox 10M77 Limit Control 320788-703 Standardized Diagnostics: Features an onboardThe Lennox 10M77 Limit Control (part number 10M7701) is an OEM standard L150 40F snap disc safety switch engineered for high performance thermal regulation in residential and commercial furnaces. This high limit cutout opens the circuit at 150F and features a 40F differential, ensuring the heat exchanger remains within safe operational parameters to prevent structural fatigue and secondary damage. As a critical HVAC safety component, this fixed