Krist N Peyton , CO September 28, 2014 No error codes display blank and top blower not turning Ordered main control board and top blower. parts arrived as expected and well packaged. replaced main control board. Took two times to get ribbon cable inserted and aligned correctly. display functioned properly, but blower still not turning. replaced upper blower. everything working now. 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes