Question about Moen 3175 Legend One Handle Shower Faucet With trol Pressure Balancing Valve....

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Not enough hot water, has to do with a shower valve

Ok, I just installed a 50 ga LP hot water tank and I still don't have enough hot water for 1 person to take a 8 min shower and at the end of the shower cold is turned completely off and only hot know is on. I believe it has to do with a newly installed shower valve. If I go to the shower valve and turn cold water on, it runs fine. If I turn hot water on it runs fine. If I go to the hot water tank and turn hot supply off to the house and go back to shower and turn the hot water on it is dry if I turn cold water on it just barely trickles out. The valve is a single handle moen turns counter clockwise starts on cold and turns to hot.

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Take off handle (screw under cap) there is a plastic peice behind for ajustment if you move it one way it allows more if you move the other way less contact me if you have problems thank you for useing fixya please rate me

Posted on Feb 21, 2009

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Hello, first if any water supply hot or cold is turned off, you will experience trickling as you mention. You must have both cold and hot in order to adjust the temperature on your valve. if you had a plumber intall this unit you should ask him to adjust it. Otherwise here is how:
Rotate the handle counterclockwise to stop and let water run till cold water is purged, check
temperature. Rotate handle to off, remove handle parts (see Disassembly in your manual) and temperature limit stop, rotate clockwise to decrease and counterclockwise to increase maximum hot water temperature, reinstall temperature limit stop and handle (TIP: Do not screw handle in until desired maximum temperature is achieved) Repeat steps until desired maximum
temperature is achieved

Posted on Feb 21, 2009

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I installed oakbrook tub and shower faucet 48011 and no hot water is coming out either side just water. What could be wrong?


If you have just water coming out you have not urned on the hot water valve that was turned off during install. check other faucet for hot . If you have hot there its not the hot water tank its the hot side valve.

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It's doubtful your water heater unit is the problem. There is simply no reason for it to only work on sinks unless some how the pipe size was drastically reduced coming out of the unit so sinks got plenty of hot water but the shower does not. Take a second look at the installation. The pipe should not be less than 1/2" coming out. If that's OK then consider a clog or valve problem.

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Does not supply enough hot water


I bet you don't drain your tank every year. It accumulates something a little like sand . it may have been low enough to "suck" up some of this trash into the hot water lines and then to your valve and shower head. I would start with the head itself a good long soak in vinegar. If you have a spare shower head or hand shower head, I would let it sit for a week. While you have the "tempory" head installed, you can find out if the valve has been affected. Hopefully not. But if it is still slow flow, the trash may have accumulated in the valve. If that is what it apears and you have been considering a new valve now is the time. You may be able to flush it out with a direct connected garden hose. A "reverse flush would be the first try.

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2 Answers

Hot water varies


I do not know how old this unit is or what model but many water heaters are not sophisticated enough to measure the temperature, but heat based on water flow and temperature rise. To start, tankless water heaters turn off every time you turn the hot water off. Lets use an example. You use the facilities, wash your hands then turned off the water and take a shower. You will bring the already heated water (from washing your hands) from the pipe up to the shower. Then the cold water that comes into the pipe from the reactivation of the water heater comes up the hot water pipe with warm then hot water just behind.

If this is not your problem, keep reading. Every unit I have been called to see were installed wrong. Check your installation manual to see if the problem with the system started with the contractor.

First, check the temperature of the water from the heater. If it is too hot and you are mixing too much cold water in, the unit will turn off because there is not enough water flow to keep it running.

Second, turn off the valve at the water heater and turn on the hot water at a faucet. If the water does not stop running, there is a "plumbing cross over" usually caused by a failing pressure balance valve in a shower.

Third, if the unit has not been serviced, go to bosch-climate.us to find a tankless water heating professional in your area. Totally Tankless LLC

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1 Answer

Vanguard 50 gallon electric hot water heater only enough water for about 2/3 of a shower. Used to get enough for 4 showers. Had elements and thermastat replaced. Circuit breaker checked ok. No leaks -...


Replace overflow valve to end the drip.

If tank type water heater has some hot water, then upper element is receiving 240V and electric circuit can be eliminated as suspect.
Lower element or shorted wire to lower part of tank or upper thermostat not wired correctly are next suspects. If plumber replaced the parts the wiring will be correct, but he may not have checked for shorted wire.
If the elements were replaced but sediment was not cleaned out of tank, then that can also cause the problem you describe: the new lower element is shorted out because its stuck in the sediment or no water is circulating around the new element.
Open following links for details how to test and clean tank and test elements:
http://waterheatertimer.org/How-to-troubleshoot-electric-water-heater.html
http://waterheatertimer.org/Clean-sediment-out-of-water-heater.html
http://waterheatertimer.org/How-to-clean-sediment-out-of-electric-water-heater.html

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Price Pfister ashfield collection shower single lever.


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