Mark has a point. The timer advances via a little motor. Some timer
motors complete their circuit through the element, so if you have no
heat either, you might replace the element and your timer will start
advancing again. If you have heat but the timer is not advancing,
then you will need to check for a voltage drop across the timer motor
contacts. If you get 120, and if the timer is not advancing, then
replace the timer. If you don't get 120 across the timer motor, then
give us an update and I will give you some more ideas.