1. Check battery level the batteries with Alkaline batteries if needed. (Three AA batteries for the Timer and Wand, three AAA for the Photocell, and one 9 Volt for the IRE).
2. If the batteries are still good, remove the batteries for 30 seconds to reset the unit, then replace and try again.
3. Check USB cord for wear.
4. If problem continues return unit for repair.
TC-Timing System