Doug, F70 means check harness connections at the machine control and at the console electronics. If your connections are fine to the machine control board and the console electronics, then you may need to change the machine control board. Unplug your dryer first and leave it unplugged for a while to see if it resets It is below the top panel on the left hand side of the dryer panel. I attached the tech sheet for the dryer to the bottom of [https://www.ifixit.com/Device/Kenmore_Elite_HE3_Dryer|this page.] Hope this helps, good luck.