Question about Moen & Posi-Temp Single Handle Shower Or Tub Valve

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Replaced a moen cartidge and now the water is not hot in shower

I pulled the old moen cartridge from the shower because I had a water leak. The new cartridge fixed that problem but now the water will not get hot enough for a shower and the water preasure is down. I checked the water stop to make sure it goes all the way to Hot and it does.

Any Ideas

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  • heatguy May 11, 2010

    is the water pressure low throughtout house or bath or just shower fitting.if just shower you may have some debri in line that is clogging hot side you may have cartridge in wrong way and have to turn it 180* or you may have valve not open 100%

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Make sure when you turn on the hot and cold shut off valves all the way and turn the moen on after that. Some times I would get that problem if I turned one(either hot or cold) off then tried the shower.

Posted on Feb 26, 2009

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Sure - there is always help at FixYa!

This sounds like a bad cartridge. They can be replaced. To replace the cartridge:

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Check the cartridge bore (the hole where the cartridge was removed)
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Apply a little bit of soap around the new cartridge to help it slide in easier. Push it all the way in and make sure it is seated. Re-install the clip (you should have received a new clip with the replacement cartridge)
Turn the water back on a check for leaks
If OK, reinstall the knob screw, and cap.

Let Mom take her warm shower...:)

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