Re: Shower has no hot water and little pressure
First, Google is your friend, go to the Moen website and get an owners manual (free to download ).
There could be a piece of debris stuck in the hot water side of the valve or it could be that the anti-scald device wasn't properly adjusted. You'll probably find that this is a cartridge style valve and it is possible that the cartridge is bad and needs replacement. Most of these things requires turning the water off to the building and disassembling the valve to a degree. It's an easy procedure, however, if you've got any misgivings about your abilities, you're better off hiring a professional to change it out for you.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!