Ice maker on refrigerator not workin

[Troy Welch]

This is for a new rental that I closed on a couple of weeks ago.  I bought a scratch n dent refrigerator locally - brand new still has all the blue tape securing everything and the plastic wrap, just a couple of dents. Rented a truck. Drove it (yes I strapped it upright) 90 miles to the rent house. Hooked up the water line and turned on the water - no water to the dispenser or the ice tray. I tried clearing air out of the line. I unhooked the water to make sure water was flowing thru the 1/4" house and it was. It is plugged in and cold refrigerator/freezer. 

The manual says NOT to use a needle valve that is tapped into the water supply line - previous homeowner did that and it apparently worked for them. 

I am planning to go back on Friday and replace the needle valve with a reducing tee as well as the tube. Does anyone think that will resolve my issue? 

If that doesn't do it, 

• Should I call manufacturer warranty?
• Should I call a plumber?
• Should I disconnect it and say water and ice don't Work? LOL not my preferred route since I bought it for the dispenser.

Any help appreciated.