Question about Delta & Single Handle Shower Faucet

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No hot water flow from faucet/shower

The water is hot and is accessible from other faucets. Faucet is approx 2 years old.

Single handle faucet...turning all the way hot stops the flow of water. The closer to cold I get, the more the water flows.

Recommendations?

Thanks

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Change the cartridge it is bad or defective.

Posted on Jul 20, 2009

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1 Answer

Heater takes more than 1 minute to get water to kit faucet , then temp fluctuates


1) Guesses: Sounds like a bad single-handled faucet cartridge, or low water flow at faucet, or clogged water filter.
Replace faucet cartridge, clean the aerator, and/or clean sediment out of pipes below sink, and clean water filter at tankless unit each month.

2) For exact measure of problem:
Typical faucet can have 2 gallon per minute flow rate.
2 gpm flow rate means faucet fills 1 gallon container in 30 seconds. Test faucet using 1 gallon container and a cooking timer to get flow rate.
Clean aerator to improve flow rate. Compare kitchen flow rate with other faucets in home.
http://waterheatertimer.org/Low-hot-water-pressure.html

Most homes have 1/2" diameter pipe running to kitchen faucet.
100 feet of 1/2" diameter pipe holds 1.2 gallons of water. This assumes no sediment build-up inside pipes.
http://waterheatertimer.org/Water-heater-recirculation-system.html

Assuming only hot is turned on: If faucet is 100 feet away from water heater, and pipe diameter is unobstructed 1/2" diameter, and faucet has 2 gallon per minute water flow, then hot water should arrive in 36 seconds.
50 feet away, and hot water should arrive in 18 seconds.

If kitchen has single handled faucet, and the handle is raised in the middle, then equal amounts of hot and cold water are drawn at same time. This doubles amount of time for hot water to arrive.

If single handle faucet has a bad cartridge, then faucet can have crossover.
Crossover means that cold water can enter the faucet even if faucet is turned to hot.
Bad single-handled faucet cartridge can delay or stop the arrival of hot water.
http://waterheatertimer.org/Crossover.html

Tankless require maintenance including cleaning combustion parts yearly, de-lime heat exchanger frequently, and clean water filter each month.
http://waterheatertimer.org/pdf/Tankless-maintenance.pdf
http://waterheatertimer.org/pdf/Bosch_Overcoming_fluctuating_temps.pdf
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Add a comment for more help.

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Fixya is always less expensive than a service call.

Sep 15, 2011 | Rheem Direct Vent Natural Gas Tankless...

1 Answer

The hot and cold are reversed on our single handle shower (no tub faucet -- shower only)


Hot on left.
Cold on right.
Some single handle faucets have bleed-over where both hot and cold enter mixing valve each time handle is turned on, even when faucet calls for just cold or just hot.
Otherwise maybe a do-it-yourself plumber got pipes backwards... or maybe the tub used to be on other side of wall, and tub was moved during remodeling but pipes were not changed.

To fix problem:
First of all, turn off shower faucet. Turn on Hot at sink and put ear against shower faucet listening for sound of water flowing through the mixing valve.
If mixing valve is working fine, you need to open wall and investigate more.
For example if you have access door, reach in and feel which pipe is hot.
Pipes might need to be reversed if problem comes up in home inspection, otherwise the problem will not harm anything.

Feb 19, 2011 | Price Pfister Plumbing

1 Answer

Getting hot water when shower valve is first opened.


If I understand correctly, you have single handled shower faucet.
Normally there is a wait for hot water to arrive at faucet.
But now hot water is already at shower faucet.

Single handled faucets have a mixing area inside valve where hot and cold come together before going into sink.
This mixing valve can have crossover where the hot and cold can pass through to each other even when faucet handle is off. When single handle faucets get old, this can happen.
How it happens:
For example another faucet is turned on inside house, and pressure differential between hot and cold causes hot water at shower handle to pass through mixing area and into cold water line.
So if another faucet has been run, then that lets hot flow to faulty single handled shower faucet.
To confirm this is the problem: turn on other faucet and put ear against shower faucet to listen for moving water.
This condition may also signal there is a water leak.
The problem is not harmful, but will draw cold water into water heater each time, and is energy wasteful.
Replace faucet or have plumber repair problem.

Feb 19, 2011 | Price Pfister Single Lever Handle Faucet...

1 Answer

Get hot water only....when rotated to cold get nothing....replaced cartridge but still the same.....shower has been unused since house was built


If you don't have easy access to hot and cold line, where you can disconnect and check for flow to faucet, You can try turning off incoming water supply, remove cartridge, and shut off hot outgoing at water heater, then slowly open incoming (cold) water supply only and see if cold flows from faucet with cartridge removed. At least that will confirm flow faucet, then go from there.

Sep 19, 2010 | Moen & Posi-Temp Single Handle Shower Or...

1 Answer

Moen L3175 faucet with low water pressure


IS THIS A SHOWER ONLY? IF SO ,I WOULD REMOVE THE SHOWER HEAD FIRST THEN TURN YOUR WATER ON.THE HEAD JUST MIGHT NEED TO BE CLEANED AFTER 11 YEARS.

May 10, 2010 | Moen L3175 Chrome Legend Single Handle...

1 Answer

Moen Single Handle Shower Faucet-turn on get cold, little hot


You can try to rotate the first plastic ring to the left of center a few teeth, this will let the handle advance alittle more to the hot side.

Oct 09, 2009 | Moen 3175 Legend One Handle Shower Faucet...

1 Answer

Delta single handle faucet. Hot or cold no in between.


well they should be same size but unless you getting more of one then other then sound like mixing valve is not mixing. do have 3/4 hook up to mixing valve? you only need 1/2" to valve.

Jun 25, 2009 | Delta & Single Handle Shower Faucet

1 Answer

Low flow hot water in Delta Shower


If your water heater is old or has been recently replaced, it will slough off debris that will get caught in the hot water supply side of the faucet. You have to disassimble the faucet and use a dental pic to remove the debris from it. This is a real common occurance. You can also try to flush out that side by removing the parts and then slowly turning on the water without the parts inside. Be careful not to flood your bathroom when you do this. But usually you have to dig it out. I have spent as high as 3 hours digging the liner from the dip tube of a water heater out of a faucet.

Apr 05, 2009 | Delta & Single Handle Shower Faucet

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