Originally Posted by NRG
I think it's best for you to contact BMS tech support instead of shouting it out over the forums. Terry will most definitely help you resolve that problem in a flash.
For issues like this I think it's often helpful to get input from other owners. This problem may not be limited to the JB+, and could provide useful info regarding hot weather performance. If there is a fix from BMS then that should also be posted if the vendor approves.