Dacor oven fan not functioning properly?

I replaced the ERC in Nov 2008. The oven seemed to work great for about 5 months. Then I got the same F1 error code. The oven seems to work fine, but the cooling fan turns off when I turn the oven off instead of running for a few minutes as before. Then I get the F1 code again. Did I get a bad board or is there something else that could be interferring with the fan functioning properly and throwing the same code?