Your camera is probably at the same y position as the sprite? Here are my settings that work - I can't provide a download of this as it uses some random artwork off the internet as a test.
Tilemap, pos = 0,0,0 rot = 90,0,0 scale = 1,1,1
Player sprite, pos = 0,0,0 rot = 90,0,0 scale = 1,1,1
Camera, pos = 0,10,0 rot = 90,0,0 scale = 1,1,1 - far clip plane = 100
The camera has to be "higher" than the tilemap to be able to see it. You can work this out by rotating scene view around a bit so you can see the box around the camera and where your sprite is in relation - it needs to be inside the box to be visible.