Nexxt electric dryer's start button works only after machine has been sitting unused for several hours. Model is WTMC6300/01. When it starts it works fine, but only once and then will not start again until after "resting" for several hours. Vent duct is clean. No lint accumulated anywhere.

The only way to find the problem is with a good digital multimeter. Here is the manual: https://dl.dropboxusercontent.com/u/8010163/Bosch%20Dryer.pdf
https://dl.dropboxusercontent.com/u/8010163/How%20to%20use%20Test%20Equipment%20Service%20Manu al.pdf (How to use a meter.) Here is another one that will also help: https://dl.dropboxusercontent.com/u/8010163/How%20to%20Diagnose%20and%20Fix%20Everything%20Ele ctronic.pdf
You will need to test the "Push to Start" switch when it is hot and if it is good (closing when pushed) then check the next one in line which will be the door switch. You also have high limits that will need to be tested; just look at the schematic.