If hot water is turned on for about 30 seconds, I cannot move faucet from right to left and vice versa

There are 2 settings. One for recirc-ing inside the unit. Switch 1 off and switch 2 on, valve to the left turned to the left under INT . That is to recirc in the unit.
Other
Switch 1 is on and switch 2 is down and the valve to the left is turned to the right next to EXT. That is if you have plumbed in a separate line throughout the home for re-circulation.
It should be fine then.
Bill

Check this link: http://www.selfhelpandmore.com/plumbing/how-to-adjust-a-single-lever-shower-faucet.php

You haven't provided much information to help narrow down the source of the problem.

Is the flow of both hot and cold water flowing freely? Are the water lines not clogged internally with corrosion or residue? Is it possible that the water is being diverted such as in an apartment building or to an outside spigot (sprinkler system) or kitchen faucets (dishwasher)?
Is your water heater temperature setting correct and is it supplying sufficient hot water flow to the shower?
Do you have a temperature balance cartridge in your shower faucet? If yes, it could possibly be faulty.

Easy one.
Feel the pipes. The pipe on the right should be cold. If the pipes are correct, turn the cartridge 180 degrees.

Hello,

THats a bit tricky determining which water valve it is...while the one way to be sure would be a process of elemenation the cold water valve is most likely going to be the one. A fairly easy way to determine which one is,is turn off just the hot water tap and cold water tap seperatly over the course of a couple days and see when either is off if it still has water in the drum...meaning if with the cold water faucet off does it still have water in the morning and vice versa for when hot faucet is off

so with the cold faucet off no water in tub from overnight its the cold water valve
if no water in tub when hot is off its the hot

GENE

The rubber gasket needs to be replaced...

they installed the right on the left and vice versa,, switch them around,,

Switch the hoses at the faucets and see if it makes a difference.

hi,
reverse the hoses so they go to the other faucets? take your left hose and put it on your right faucet and vise versa. have you tried that?
just an idea
jm

You turned the faucet body when you tightened faucet you need to loosen and reposition body so handle goes left and right equally and retighten while making sure faucet body does not move