LENNOX M4 Core Unit Controller Instruction Manual
Learn how to update the firmware of your Lennox M4 Core Unit Controller with this user manual. Follow the step-by-step instructions to ensure proper installation, avoiding any personal injury or property damage. Discover how to prepare a USB flash drive, update the firmware using the Lennox CORE Service App, and save system profiles for easy restoration. Keep your unit controller up to date and functioning smoothly.