The Lennox 15G21 variable frequency drive, part number 615610-07, is a factory-approved motor control solution built around the Mitsubishi Electric FR-D720-165-L3 platform. This pre-programmed VFD is engineered specifically for Lennox HVAC applications, delivering precise speed control, smooth motor operation, and improved energy efficiency. Designed for 5 HP, 230 VAC, three-phase motors, it helps reduce mechanical stress, lower electrical consumption, and extend overall equipment life. Pre-configuration from the factory significantly reduces setup time and minimizes installation errors, making it an ideal replacement drive for compatible Lennox systems.

 

Product description:

The Lennox 15G21 Mitsubishi FR-D720-165-L3 variable frequency drive is designed to provide reliable and efficient motor speed control in commercial and residential HVAC equipment. By adjusting motor speed based on system demand, this VFD improves airflow management, reduces energy usage, and enhances system comfort and performance. The robust FR-D720 series design offers advanced protection features, including overload and fault detection, ensuring dependable operation in demanding HVAC environments.

This pre-programmed drive is optimized for direct integration with Lennox equipment, eliminating the need for complex field programming. Its compact footprint and proven Mitsubishi electronics make it a trusted choice for service replacements, system upgrades, and long-term reliability. Contractors and technicians benefit from faster installation, consistent performance, and reduced downtime.

 

Specification:

Manufacturer: Mitsubishi Electric
Lennox part number: 15G21
Manufacturer part number: 615610-07 / FR-D720-165-L3
Drive type: Variable Frequency Drive (VFD)
Motor horsepower: 5 HP
Input voltage: 230 VAC
Phase: 3 Phase
Frequency: 60 Hz
Configuration: Pre-programmed for Lennox HVAC applications
Application: Motor speed and airflow control for HVAC systems
Mounting: Panel-mounted design
Country of origin: Japan (typical for Mitsubishi FR-D series)