My Frigidare is 3.5 years old and has only been in use the past 2 yrs maybe twice a week. It now will not complete cycle and displays PF. It does not have a set time it runs sometimes 25 mins sometimes <1 min. But it will not finish a wash cycle. I have run it through self diagnostics and it passes I have also unplugged it for 10 minutes and still no change. I believe it is the control circuit board. Just wanted to double check with others before spending 140.00. Any help is appreciated. Thanks