Hi. I have been running two MPP 8048 PIP MAX in parallel. I have had problems constantly from day one. These ranged from communication errors to battery shutdowns and never got a resolution from Technical. After around six months of problems the mains power from the grid started blowing the house circuit breakers. Despite sending all of the data and answering every question to the best of my ability the same questions always got asked. No one was actually listening to my information. The electrician then said that he could not risk any more issues and disconnected the inverters. Last week MPP told me this "As mentioned in a previous email, the narrow differential in switching mode voltage settings for these inverters may be causing the relay in the inverter switch to malfunction frequently" This had never been mentioned before and I still have no idea what this means. MPP will offer me a 5% discount as they say that the circuit boards need replacing. This price will include shipping. Can anyone give me any information. I am at my wits end with them as I have had no solar for many months. Thank you.