RHEEM 30 GAL ELEC TALL Water Heater 6YR SC 82V302 Logo
Anonymous Posted on Oct 10, 2012

Drain valve fixed, waterheater full & clean, elec back on, now no hot water? no pressure out of hot water faucets? what could be wrong?

I also checked and yes the hot waterheater is hot, I even left it over night, no pressure is leaking from the heater. But still no pressure at the faucet for hot water only?

  • Anonymous Mar 16, 2014

    how do I register my hot water heater
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2 Answers

Gene Haynes

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  • Rheem Master 5,391 Answers
  • Posted on Oct 11, 2012
Gene Haynes
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Clogged cold water nipple or clogged hot water nipple.
Is water hot at drain valve?
http://waterheatertimer.org/Low-hot-water-pressure.html

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

billconfused

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  • Expert 211 Answers
  • Posted on Sep 25, 2013
billconfused
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Check your screens/water savers on the faucets, after messing with any plumbing system, you can loosen build up minerals and trash and it travels to the faucets and is caught by the water savers and trash screens.

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5 Related Answers

Anonymous

  • 248 Answers
  • Posted on Oct 31, 2009

SOURCE: rheem tankless water heater error code C4 13??

check diaphrapm valve or micro/switch best of luck

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pipesster

Sean Lavelle

  • 21 Answers
  • Posted on Jan 25, 2010

SOURCE: the hot water just trickles out of the hot water

Something is blocked. Turn off water to heater disconnect outlet and attach a waterheater flex connector to tank outlet bend other end into bucket. turn on water briefly - water should blast into bucket.
If not:>>>>>>>>>> disconnect water heater inlet -you may find part of the flex washer stuck into the inlet nipple. Or dip tube may have disintegrated and be plugging outlet nipple, if you have the energy saving nipples the ball can jam debris in the nipple.
If water does blast into bucket >>>>>>>>>>>> Then the problem is farther down the line, maybe bad mixing valve. disconnect mixing valve outlet and use a garden hose to backflush through mixing valve with bucket under hot pipe disconnected from water heater. If flow through valve is restricted, replace valve.

Anonymous

  • 61 Answers
  • Posted on Sep 19, 2009

SOURCE: No water pressure in bath tub after turning off hot water heater

It could be back flowing into the hot water heater tank which is not full because of the leak. Even though the valve is closed on the cold water entry side, there is probably no valve on the exit side. That is how it is returning to the tank.

Testimonial: "Thank you very much, Rick! "

Anonymous

  • 244 Answers
  • Posted on Feb 07, 2010

SOURCE: model PTG-42PVN

According to the symtoms...sounds like you have a problem with the flow control valve. If less than 3 yrs old, contact Rheem Customer Support at (800-432-8373) and they can an authorized tech in your area to service the unit.

If the unit is out of warranty, I reccommend you still call customer support to find a local technician. Unless you're highly technical/mechanical, this is not a problem you should attempt yourself.

Thanks for trying Fixya.com

Mike...

Anonymous

  • 102 Answers
  • Posted on May 11, 2010

SOURCE: no hot water

If you checked the reset, then the next thing to check would be the breaker in your breaker box. If that doesnt work start checking the elements. The reset, the thermostat and the elements are pretty much all that can go wrong with an electric water heater, short of a leaky tank or faulty t&p valve. Hope this helps.

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Related Questions:

0helpful
1answer

I have overall good water pressure until recently now good cold water BUT hot water not so hot and very low pressure?????

It sounds like you have a scale problem which can seriously affect your water flow. If the water heater is older than 10 yrs, then this may be your problem.
If so, try draining the htr. First off, turn your heater off. If electric, turn off 30 amp two-pole breaker in your elec panel. Your elements may also be scaled up, thereby reducing their effectiveness. If you have little hot water, your bottom element and t-stat may be bad. If the electric heater is older than 10 yrs old, then you may want to consider replacing it as the average lifespan of a heater is about ten years. If gas, just turn the control knob all the way down. Attach a garden hose to your heater drain valve. Run the hose outside and open the drain valve with the water supply to the htr still on. This uses water pressure to blow out the scale that is likely clogging the drain valve. Blow it out for ten seconds, and then shut the valve feeding water to the htr.
Shutting the valve creates a vacuum so the draining will slow way down. To speed this up, turn on hot water all around the house. Do not do this with single handle faucets because cold water will cross over. Only the hot on two handle faucets should be opened.
If you don't have any two handle faucets, you can either turn off the water main and open the single handle faucets, or flip the lever up on the relief valve located on top or on the side near the top. Pull it so that it sticks straight out. This locks it in the open position and allows air to enter, and water to exit. Drain until no more water comes out.
Please keep in mind that if your heater is old, the scale may be the only thing keeping it from leaking, and this may expose that leak.
If none of this works, your inlet and/or outlet on the heater may be scaled up. This requires the removal of piping and scraping out the scale. Once again, if the htr is old, (over 10) you may want to consider just replacing it.
GOOD LUCK!
1helpful
1answer

No hot water from kitchen tap

The hot side of the faucet is most likely plugged with something that came up thru the water system. The average thankless waterheater requires at least 1/2 to 3/4 gpm flow rate for the unit to sense flow and turn on. If there is not enough flow it will not fire and heat the water. Not sure about this particular unit but a few require at least one full gallon per minute flow. So chances are that if you fix the faucet, you fix the hot water issue at the same time
0helpful
1answer

Drain Valve leaking on Hot Water Tank for model #21V40-7

You can purchase a new drain valve at a hardware store to replace it. Turn power and water off to replace it after you drain it down. Replace drain and turn water back on and open faucets to get air out of lines before turning power back on.
0helpful
1answer

Our hot water will last for about 5- 10 minutes then turn luke warm. I have replaced both elements but problem remains . Do you hink it is the thermostat ? thanks chazz

If you have not done so already then turn thermostats up to 140 degrees. You may also try to drain and flush tank to clean out any mineral deposits that could be hurting your effiency. To do this shut off electrical power to heater then connect garden hose to drain valve on the bottom of tank. Run hose to floor drain or other safe area and open drain valve. If it drains good with the water on then let it flush for a couple of mins. then shut incoming water supply off. Let tank drain as far as it will. You may need to open a faucet on the hot side of nearby fixture to break vacumn.
Drain it completly then close drain valve and hot side of faucet.Turn water supply back on and let tank refill. Do this 2-3 times to get inside of tank as clean as possible. Hope this helps you and thanks. P.S. You may need to replace thermostat also.
0helpful
1answer

I have a leak coming from the "cold" line right at the valve joint. There is signifigant calcuim build up on the pipe from the valve to the connection of the water heater, (maybe 8 inch of pipe)...

Very simple - call a Plumber. He will fix your plumbing problem, and any foreseen potential problems related to your water leak. He may also suggest replacing your 6 year old water heater. Of course ..... for a professional cost.
However, depending on your time, skills, proper tools, patience and luck, it's easy enough to perform yourself:
1. Switch off the water heater Breakers (220v) in your service panel.
2. Turn off the water supply to the water heater.
3. Attach a water hose to the drain faucet. ( a good time to flush sediment -calcium deposits)
4. Open a hot water faucet to vent (above the level of the water heater drain - kitchen sink)
5. Remove the suspected leak components. (a union connection is a good place to start)
6. Install New pipes -3 wrap all male threaded ends with teflon Tap. Tighten securely - using 2 wrenches.
NOTE: Before refilling - you can turn on the water heater supply valve for a few minutes, to flush out any lingering calcium debris.
7. Shut off drain valve - remove hose. Shut off venting hot water faucet.
8. Turn on water supply valve to fill water heater.
9. Open a hot water faucet to relieve air pressure while filling - preferably the bath tub faucet, it doesn't have a screen that might clog.
10. When water flows without air - shut off tub faucet.
11. Look for leaks.
12. Switch the water heater Breakers on.
Note: 50 gallons should take an hour or more to heat up. Turn on a hot water valve momentarily within this heat up time to relieve thermal expansion. ( the PT valve on your water heater will perform this task if pressures/temperature exceed new water heater tolerances - it's just a precaution to introduce these fluctuating pressures on your fragile 6 year old unit)

These are just basic instructions - assuming you fill in the common sense and work safe steps.
Good Luck - The Skill will only come after trying.
0helpful
1answer

Turned off the hot water to fix a leaking tap. now the tap has no hot or cold water and the hot water tank valve is leaking?

It sounds like two problems.
Problem 1) Clog inside faucet or clog inside pipes at faucet
Remove supply tubes leading to faucet and see if problem is inside pipes or inside faucet.
My bet is clog inside faucet.

If you have galvanized pipe that meets copper pipe, this can be trouble spot.
Article on clogged water pipes at Inspectapedia:
http://www.inspectapedia.com/water/Water_Pipe_Clog_Repair_Guide.htm

Article on clogged pipes:
http://www.waterheaterrescue.com/pages/WHRpages/English/Troubleshooting/Tanklets/backflushing.html

Problem 2) Water heater leak ... you say tank valve is leaking? Is that cold-water shut-off valve? Or tank drain valve? Or TP valve?

If cold water shut-off is leaking, then replace shut off.

If tank drain valve is leaking, then check if plastic valve is cracked. If drain valve is cracked, then replace with a brass valve from Home Depot. If plastic valve breaks off, then use hammer and screwdriver to gently chip out the broken plastic valve. New valve threads need teflon tape to seal pipe. If valve is just dripping, then put garden-hose cap over end of valve and screw down tight.

If TP valve is leaking, then replace with same temperature and pressure rating.
New TP valve threads need teflon tape to seal pipe.

Problem 3) If pressure is low all over house:
Buy pressure gauge at hardware store that screws onto hose connection.

Test pressure on outdoor spigot.
Open faucet and check if pressure drops. This says if problem is inside pipes that enter house.

Test pressure on water heater drain valve.
This says if pressure problem is before -or- after water heater.

If problem is before the water heater, then shut-off valve located on cold water line is suspect.
If problem is after water heater, it could be in hot water outflow pipe on top of water heater, or a nearby elbow.

Remove hot water line leading from water heater and check pressure. This says if problem is where hot water leaves tank.
Read articles above about clogs inside water lines.


0helpful
1answer

The water is not draining when i hook the hose up to it. how do i drain?

Is the water pressure on to the heater? If the water has been turned off the heater will not drain unless you open another valve to allow air to enter the heater as the water drains out. You can do that by turning on any hot water faucet in the house or by opening the safety pressure valve located on the top of the water heater. If that does not release water, check to be sure your hose from the heater is not kinked anywhere. If pressure is on to the heater and water does not come out, you will have to take some more drastic actions to drain the tank. You may have to actually remove the faucet at the drain and dislodge calcium build up in the bottom of the tank. If it is that severe, I think I would just leave it alone rather than take a chance of damaging the unit.
0helpful
1answer

Empty boiler

Turn main water off to the water heater, it may be a valve on cold side coming in to shut off. Next turn power off to the heater and drain the tank the drain will be located near the bottom of the tank.
You will need a water hose to connect to the drain to run water outside. Open a faucet hot side to allow you to drain the tank.

Upon reinstall connect the tank up and fill tank and open up hot side on one faucet at a time to purge out air from system before turning power back on. Make sure you have water flowing from each faucet's hot side before turning power back on.
1helpful
2answers

No water pressure in bath tub after turning off hot water heater

It could be back flowing into the hot water heater tank which is not full because of the leak. Even though the valve is closed on the cold water entry side, there is probably no valve on the exit side. That is how it is returning to the tank.
0helpful
1answer

Water heater has hot water in it but cold water is still flowing

Nothing wrong with waterheater. Did you perhaps reverse hot/supply lines on new shut off valves?? try reversing lines. Maybe

Please rate. Thanks jj505
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