I have a shower/bath that has a 3 hangle system. It has hot, cold, and a diverter. The cold valve works fine and water comes out just fine, the diverter works fine and turns from bath water to shower head, the hot water on the other hand doesnt work. That means no water whatsover comes out when turned on. So the only way water comes out via bath or shower is the cold water. It is like the valve isnt even working. I took it about thinking it may be a bad valve but when I swithed valves it worked the same with only water coming from the cold valve. The hot water works everywhere else in the house and even in the two faucets in that bath. Any suggestions. By the way this is house we just bought and are finding things wrong. It looks like the bath was fixed with new fixtures and tile so Im wondering if something was not done right in installation.

Thanks, Michael