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Water flows straight through the shower as soon as the mains is turned on. With or without power it,s the same???
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Posted on Jan 02, 2017
The Moen Posi-Temp Valve is a pressure balanced valve and when not used for long periods of time they can stick causing only cold or hot water to pass through the valve.
A New Posi-temp cartridges can be purchased at most plumbing supply houses or big box outlets such as Lowes or Home Depot.
As long as you had cold water before, a new cartridge will solve the problem. In the future it would be wise to occassionally operate the valve at least a couple of times a month in order to keep the pressure assembly from becoming lodged in position. Just follow the instructions included with the new cartridge on the proper removal of the old cartridge and the installation of the new cartridge. a little silicone grease inside of the valve before installing the new cartridge will also help.
Be sure that there is no particles of the old cartridge left in the valve.
Posted on Dec 27, 2008
SOURCE: shower not getting enough flow
There is a safety limiter in the shower control. This essentially limits how far towards hot you can set the control. Yours sounds too low.
What you do is tape the drain, so you do not loose any small pieces, remove the lever handle, usually an allen, and then you can see what is limiting movement. Ususally a gear affair.
Scribe with a small scratcher, the current position, and Reposition it some in the direction you would thing gives more hot water...and test the hot temprature.... either you will have more or less, and then adjust accordingly.
Posted on Feb 25, 2011
Switch off the power at the main switchbox!
Unscrew the shower cover to reveal the main valve/switch assembly (green in my case)
On the green valve you can line up the bit that moves to select power settings and remove it
Undo the two screws holding the outer switch frame and lift it off
Undo the two screws holding the valve body in.
Remove the valve body, underneath you will find an ordinary tap washer - probably split
Replace the washer - I didnt have an exact match in my toolbox but drilled the middle out of a large tap washer to match
Posted on Oct 20, 2011
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