It may take a few moments for the Smart Vent Light Bar to turn on during Setup mode. If after 5 minutes in Setup Mode, the Light Bar is still not illuminated, power cycle your Smart Vent.
To power cycle a Smart Vent, remove the batteries for five seconds before putting them back in. If your Smart Vents are hard-wired, remove the 24 VAC power lines, wait five seconds, and plug them back in. To manually reset your Smart Vent, follow the instructions at flair.co/reset-vent.