Shower faucets and outside shower controls are mounted upside down. The shower control should have the hose coming out the bottom. If you look closely there is a drain hole in the top (this should be on the bottom)
You have to remove the complete assembly from the shower wall, disconnect the hot & cold connection (be careful you don't drop the sealing gaskets) turn the complete assembly over reconnect the water lines, check for water leaks before remounting the assembly. Re-caulk. Reinstall the valve cores (don't mix them up). When finished, swap the "H" & "C" inserts on the knobs.
This should correct the wrong installation at the factory by a "BUBBA" worker.
There was a quite lengthy post about this problem of the wrong installation on a earlier post.
Sid, Lois & HRH MISSY Terrible 2s SHIH TZU
2011 ROCKWOOD 8285 WS
2014 F-250 KING RANCH PS/SD/6R140/BFT
BOLIY PRO 3600SI GEN
DAYS CAMPED 2016 57 DAYS