I have an MPPT 150/35 BlueSolar charge controller and a MPPT Control Unit v1.0 (SN:HQ17*******). The MPPT Control continuously scrolls "Fetching History" and it can only be stopped by disconnecting the MPPT Control cable from the MPPT 150/35 charge controller. I have taken it to the Airstream dealer from whom I purchased it and they say all they can do is unplug and re-plug it to reset it. Otherwise, they insist that it is because I am pushing too many buttons (even when I have pushed no buttons at all). I am frustrated and would like to fix this problem. The MPPT Control software version is 20 50, the MPPT software version is 5 1. Can you help me with this problem?