problems with house module

I got my LVAD, February of 2014.I didn't have any noticeable problems or issues with the mechanics until January 1st of 2015. That very day I began having several alarms of low speed,low flow and other alarms that lasted approximately 6 to 8 seconds.I brought the equipment into the clinic as instructed so A diagnostic testing could be performed. They think it is a software issue, but are not sure.i was given a ungrounded line to use,and for now the alarms are not going off. It may take several months for the techs in California to find out what's going on. Just wondering if anyone else has had this problem.