Lennox 13D83 Inverter Module 320074-702 and B340970P01

and B340970P01

This Wi-Fi enabled thermostat supports remote monitoring via the Lennox Smart Technician app

Modular Design: Facilitates easy maintenance with internal parts that are accessible without removing the valve body from the line

the load relay is energized when the liquid level is in contact with the probe

This automatic limit control is essential for troubleshooting furnace cycling issues where the blower continues to run but the burners are disabled

Lennox 13D83 Inverter Module 320074-702 and B340970P01The Lennox 13D83 Inverter Module is a critical OEM replacement part engineered for high efficiency HVAC systems, specifically those utilizing variable speed compressors. This module functions as the primary drive control, managing the variable frequency drive (VFD) cycles to modulate compressor output based on real time thermal load. By converting incoming power to precise pulse width modulation (PWM) signals, the 13D83 ensures the system maintains