My control panel has been replaced 4 times by a local repair facility within the last 10 months.. It last about 2 to 3 months and then goes out again. This time I tired to lower the temp 3 degrees and it showed E started beeping and so I tired to put it back where it was originally and it just went black and started beeping. It beeped for 2 days and then it quit. When they put this panel in it started blinking about 4 days later. It has to be something else,, what else could it be?