Diplomat F7 fault?

6 Months ago my Diplomat ADP8332 would not fill and showed the F7 fault. (From reading earlier posts I see that this is a flow meter fault) I messed about with it for a day or two before getting fed-up with it. However, today I decided to try it again and after a couple of attempts it filled up!! I'm highly suspicious of things that mend themselves, has anyone experienced this before?