Dryer Problems

I just purchased a Whirlpool Duet dryer a month ago. I got a code, F70 half way through a drying cycle. It wouldn’t start right away had to wait about an hour before starting again. Now it will only dry for about 5 mins and then the F70 code comes on and have to wait until it cools down before starting it again and probably have to do this 2 or 3 times during one load. Does any one know what this problem could be?

Hi, Yeah that was the first thing and it is all fine. We had a repair man come and check it out and he thought it was the electronic issue - heat sensor, and change it but it is doing it again. I was just wondering if anyone has had this type of problem before. Plus we live in a remote area so it is hard to have it checked out. Thanks