How to reset the clock siemens electric stove

General answer for all electric stoves: Electric stoves are usually 220V in the USA. The clock is 120V. My first "guess" is that you have 120v to your clock and maybe light if the stove has one. You should have a separate 220v power cable ( see photo attached) that will power the range itself. The cord may be missing ( simple to unbolt), the cord my be unplugged, or the 220 circuit may be turned off at the fuse box or circuit breaker.

You obviously have a power loss somewhere. The oven will not work unless a time is set on the clock. I would suggest you have problem with the feed to the cooker which an electician should be able to check it out. If anything else is wrong on the cooker, it shouldn't reset the clock.

The clock is on auto because of power cut, you need to reset it to manual to enable the oven to work as normal. Refer to your user instructions.

THERE IS A PROBLE WITH THE ERC (CLOCK) NOT TO SURE IF I WOULD USE IT EITHER. THE PART IS EASY TO CHANGE JUST TURN POWER OFF AT THE BREAKER FIRST. YOU CAN FIND THIS PART HERE.
http://www.searspartsdirect.com/partsdirec

It depends on the make and model and wether it is a digital clock.

But generally if you press/turn the larger knob this will reset the clock and return the oven to manual cooking .

does anyone know were i can get a replacement top oven inner glass for my stoves heritage 720EF ?

Sound like you make have a loose neutral on the cord where it attaches to the range or in the electrical receptacle where it plugs in, you can check the cord by pulling the range out, remove the small access cover to the cord connection area, after you have unplugged it and just tightened all the nuts to all connections on the cord. I advise an electrician to check the receptacle. I hope this has helped you. Have a great new year.

Try unplugging the oven and let sit for 10 min. This will reset the curcuit board and reboot the electronics. You may have to pull out the stove o get to the cord.