Lennox 10B72 Motor Module 320788-704 The internal diaphragm mechanism is

The internal diaphragm mechanism is sensitive and will be damaged if exposed to liquids

Can this be used as a fan cycle control

as it protects against fire hazards and carbon monoxide leaks

technicians should always verify DIP switch settings and jumper configurations to match the specific requirements of the host HVAC unit

Lennox 10B72 Motor Module 320788-704 The internal diaphragm mechanism isThe Lennox 10B72 Motor Module is a critical ECM blower motor control component designed for precision airflow regulation in residential and light commercial HVAC systems. As a veteran grade OEM replacement part, this module interfaces directly with the system's furnace control board to modulate motor speeds based on real time thermostat demand. It is engineered to handle constant torque applications, ensuring consistent static pressure performance