Imac Shutting Down

[jw3571]

My iMac seems to be automatically shutting off if left for more than a few hours. I've checked my settings I can't find anywhere where there is an option to shutdown automatically. What's going on? Does anyone else have this? What can I do?

 

[aicul]

have you checked system preferences/energy saver settings ?

 

[jw3571]

Yes, I checked there.