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I have a new Rheem water heater that was installed today..it is a 47 gal.

Tonight I begin filling the tub for a bath. At first I mixed cold with the hot...then just the hot. Before the tub filled...the hot water was gone. I called the installing plumber. He came back and checked it. He is baffled. Can you help us?

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Check the sensing end of the thermostat. Or check that the thermostat is sensing by checking the m/v output.

Posted on May 30, 2008

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2 Answers

Re: Bosch Highflow Water Heater - model YS2433R. Hot water runs for 1-2 mintues and then turns cold. Burners turn off. Display flashes "14" (error?). Started when winter set in. Ph. 64 4 5666948


hi there,

have you gone checking the unit... first check the thermostat switch, and also the fan blower fuse/resistor.. It could be one of those is not functioning well now...

Let me know...

Jul 05, 2008 | Air Conditioners

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I was curious as to when my Rheem 40 gallon electric water heater was purchased and installed. I fear it may be on it's last legs. The serial number is RH0198BO4391. Model # is 71-40D B. It is the...


I think that your water heater was made in 1991 so it would be 20 years old. This is not uncommon for a electric heater but you are probably right about it being on it's last legs. The good news is that a electric water heater for use in a manufactured home is no different then other building types so they are not more expensive. Gas water heaters for manufactured homes cost anywhere between 150.00-200.00 more than standard. Thank you.

Jul 14, 2011 | Air Conditioners

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I turned on hot water to take a bath, and it was hot. by the time the tub had filled the water was freezing. now we cant seem to get hot water out of anywhere. the pilot light is on. the knob is set to on,...


if I was a betting may I would say that this is a small water heater, what is the temperature set on, as the pilot light will be lit once the temperature is reached, but until then the burners will be lit. I would move the temperature knob and listen to see if I hear the burners kick on. Hope this helps Tim

Apr 17, 2011 | Air Conditioners

1 Answer

I have a customer who would like a Bosch AE-9.5 tankless water heater installed in the master bathroom. The master bath is located at the far end of the house & they are wasting a great deal of water...


In theory it sounds good, but I don't think it would function properly. Most folks install a low boy 20 or 25 gallon water heater near the master bath and use the home's cold water feed as the supply line. That way, the water for the master bath alone, will always remain hot.Of course this would involve some plumbing modifications.

Of course, the other less expensive solution, would be to insulate the hot water pipe(s) feeding the master bath, from the existing water heater. That way, there would be no heat loss in the pipe(s) so the water in the pipe would remain warm to hot all the time.

Either of the above solutions should heat things up for your customer.

Mar 07, 2011 | Air Conditioners

1 Answer

Water not hot enough, have to open more than one hot water faucet to get hot water


The Dip Tube "The dip what?" you might say. In every water heater, there is a plastic tube parked in the cold port that brings cold water to the bottom of the tank to be heated -- and preventing it from mixing with already-heated water in the top of the tank.
If that falls into the tank or splits or breaks, then cold mixes with hot and suddenly your water heater doesn't work nearly as well as before.
There's a ton of Americans out there who know all about this because of a debacle a few years ago. The company that makes most of the dip tubes in this country changed its formula for the plastic. The new plastic was prone to disintegrate in certain conditions. The operative time period was August 1993 to March 1996. Aside from gradually or suddenly having much less hot water, the telltale was finding bits of plastic clogging faucet aerators.
There was a scandal, class-action suit, and settlement. But the terms of that expired several years ago, so if you find you have the problem, all you can do is try to deal with it. Even after replacing the dip tube and flushing the tank, you might still find plastic bits for awhile. But at least the water will again be hot.
Debacles aside, you should also be aware that even good plastic will eventually become brittle with age and hot water. We've found dip tubes in old water heaters that were split and broken. It's entirely possible for a water heater to outlive its dip tube. Simply replacing this inexpensive part can restore your tank's function to new and save you the cost of a new heater. So think about that before you run out and buy a new one if you experience this problem.
You may also want to flush out any built sediment. Check this out.

http://www.waterheaterrescue.com/pages/WHRpages/English/OrderPages/XCart/Sediment-Control-Flush-Kit.html

Dec 04, 2010 | Air Conditioners

1 Answer

I had a MC-91 US Rinnai tankless water heater installed in my home last Monday a week ago today. The temperature is set at 120 degreres. The problem is when we take a bath. The hot water only lasts till...


I would suggest that you turn temperature setting up to 140 degrees and see if this won't help you. Obviously with water temperature that high make sure no little ones are left unattendded. Thank you

Nov 23, 2010 | Rinnai Air Conditioners

1 Answer

I have old rheem ruud hot water tank. it's down for 4 day's, i would like to get it started, but the thing i would like to find out is can i get it going by lighting it up by using lighter or not. The...


Yes you can light it with a BBQ type lighter (long enough).
If it lights and stays lit then you need to change the thermocouple (looks like a little pipe off gas valve)

In simplest terms, a thermocouple is a temperature sensor. Normally inexpensive, a thermocouple is standard on hot water tanks. If your thermocouple breaks or you feel it is not working properly, consider replacing it b?p=y23r90wnbq7oglkvtnbuhgyhrktxauzqpeoaddsf&t=18g7grtjm%2fx%3d1290445898%2fe%3d2143440281%2fr%3dacont%2fk%3d5%2fv%3d8.1%2fw%3d0%2fy%3dyahoo%2ff%3d2680761980%2fh%3dcg49imfjb250iibzzxj2zulkpsjzmjnsotb3tkjxn09nbgtwve5ivuhnewhys1r4yvv6cxbfb0fezfngiibzaxrlswq9ijq4mtmwnteiihrtdg1wpsixmjkwndq1odk4ota5njiwiia-%2fq%3d-1%2fs%3d1%2fj%3d6f060d4c&u=13gohjn6b%2fn%3df8a.bkwnpkw-%2fc%3d715481.14405591.14260180.13829426%2fd%3dlrec%2fb%3d6235626%2fv%3d1 lg.php?category_id=6&content_type=article&content_type_id=584031&key_page=1721642411054458764&site_id=1&bannerid=10089&campaignid=2945&zoneid=2&loc=1&referer=http%3a%2f%2fwww.associatedcontent.com%2farticle%2f584031%2fhow_to_change_a_thermocouple_on_your.html%3fcontent_type_id%3d584031&cb=ebe6534afe avw.php?zoneid=2&cb=1721642411054458764&source=&n=a14de4a9&slice=-1060-&dma=-0-&cty=-us-&content_type=article&content_type_id=584031&category_id=6&key_ad=1045292919&site_id=1&ad_pos=2&key_page=1721642411054458764&ac_url=http%3a%2f%2fwww.associatedcontent.com%2farticle%2f584031%2fhow_to_change_a_thermocouple_on_your.html rather than installing a new gas hot water heater.

Begin this project by shutting off the gas control knob on your hot water heater. Once you are sure that the gas is off, you should use a wrench to remove the nut that attaches the thermocouple to the gas hot water tank. This nut should appear to be securing a piece of copper tubing or other type of tubing. With the nut removed, you should also pull down on the tubing, dislodging it from the thermocouple.

Sometimes there is another nut that attaches the end of the thermocouple to the pilot bracket, if this is the case you should unscrew this nut as well. You can slide it down the tubing and keep it there until you need to replace it.

With the nuts that were holding the unit in place removed, you should be able to slide the old thermocouple out of the brackets that hold it to the hot water heater. You should then take it to a hardware or home improvement store and find a suitable replacement. Then follow these steps to install the new part and fix the hot water heater.

To change the thermocouple, you should press the end of the thermocouple into the pilot bracket as far as you can. If you had to remove a second nut to remove the old thermocouple, now is the time to replace that nut securely.

With the thermocouple in place, you should connect the lead to the control unit. Use the nut you removed in the beginning steps to secure the lead. You should then tighten it at least a quarter turn with a wench to make sure the lead is securely attached to the control unit of the gas hot water heater.

Now that the new thermocouple is installed on your gas hot water heater, turn on the gas shut off valve that you turned off earlier. You should be able to relight the pilot and the functionality of your gas hot water heater should be restored.

Nov 22, 2010 | Air Conditioners

2 Answers

Water heater


With amp meter check amps on element wire . If no amps check Voltage and terminals on element. Should be 240 volts. Only one elements heats at a time. Top element heats up first then lower element heats up. Amps should be about 18 amps if working properly. One other problem could be a leak in hot water pipe or dip tube may be off. Dip tube carries cold water to bottom of heater so incoming and heated water are not mixed at top of tank

Jan 23, 2009 | Air Conditioners

1 Answer

Had new mixer taps fitted on sink and bath (water pressure was fine hot and cold before) but now have very low pressure on hot water. can anyone please help, as its taking 35 mins to run a bath.??????


can you check some other source of hot water? if the pressure there is ok?..if it is, then the problem is on the new tap that you fitted.

Jun 27, 2008 | Air Conditioners

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