Check the lipo cut off. I used to run an excelorin and had the same happen. The draw was too big for the trakpowers, running without a cutoff worked, although be mindful of not running for too long and killing battery.
Reboot firmware, perhaps an older one from the website and see how it is. Choose what anyone may say, they are not the best and are a budget speedo. I went over to speed passion and never looked back.
