Macbook Pro Wifi Problem !

Two days ago, i just bought the 2014 Macbook Pro with Retina Display, but i have a weird wifi problem.

When i put my Macbook to sleep and turn it on again, it disconnects from my home Wifi and i even i can't find my home Wifi in the search list. When i connect to another network my Macbook will automatically show my home Wifi in the search list again.

Anyone has a solution for this problem?