Have a pegasus shower single valve ..cannot determine how to adjust the hot water to increase it. Have hot water in bathroom sink.... renting this place...owner has no clue. removed handle and all that is there is a piece with groves on it. When applying the pliers to it all it seems to do is turn on or off the water. I want to increase the temp of the hot water. there appears to be no way to remove the whole thing to look behind it....help!! shivering

Adjustment is usually on the valve assembly. Take off the big round trim ring and you will find the adjustment on the valve assembly or in the valve stem.

You need to take the handle off...ususally held on with a small allen screw on the bottom side of the handle. After removing the handle there should be a dial setting.

the problem is the hot/cold mix is set wrong ---
remove the water control handle to expose the mix valve -- you should see a small set screw that will either increase or decrease the travel of the hot water valve. --- sometimes instead of a set screw there is a little pop off plastic set ring,, pop off and set to a more advanced travel.
this will increase the amount of hot water that flows to the shower head and the bath tap.

c...

u need to adjust the scald protector all single handle units are shipped in cold position for safety reasons if have paper work for handle it explains how to adjust if not unscrew handle and remove on handle / valve stem will see a red and a blue plastic clips pull back clips and turn slightly and push back do this till desired hot and cold setting are to your liking replace handle and your done

single water handles are often put back in 180 degrees off, remove the shaft and turn it over

Can you remove handle , behind handle there should be a dial to move to increase hot or cold supply.

Remember where you start and remove it and replace a 1/8 to 1/4 turn counter clockwise, just put handle on try it and see if it changes and adjust accordingly.

it sounds like 1(or more) of the motorised valves arent working.find the valve and make sure you are getting power to it via a tester,if so then it probably needs the head on the motorised valve changed

pegasus is a home depot product u need to adjust ur anti scald setting the valve is shipped in cold position it should have a red and blue plastic clips that go over the grooved thing call pegasus customer service at 1888 328-2383 they should be able to assist u with ur problem if u need parts or how to adjust the anti scald system

Yes - This is an easy (though not widely known) diy fix! Remove the cover of the faucet handle (may pop off if crystal type or use a screwdriver to remove the screws) inside there is a scald guard safety mechanism - using a flathead screwdriver, turn the guard some the left. There should be a guide so that you do not turn the water up too hot. If there is not, you may need to consult a plumber or supplier in order to adjust the hot to a moderate temperature.

Hope this helps! ;)

The antiscald device needs to be adjusted. It's behind the escucheon and determines the amount of hot water flow.