Question about Rheem EcoSense by 4.2 GPM Tankless Water Heater LP Gas

1 Answer

Our water gets cold half way through our shower. we have to go to the garage and shut it off and then turn it back on. This happens almost everytime we take a bath or shower.

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1 Answer

1) You posted under Rheem tankless
Open following link for useful troubleshooting resources:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

2) Unit can have internal part failure for example PC board, and result is that you get no error code.
This would explain why re-setting the tankless works.

3) Unit could also have loose wire or loose connection.
Or maybe the heat exchanger needs to be de-limed.
Or incoming gas, or incoming air, or vent problem.
Or water pressure, or water flow.

4) Without an error code, the problem can be household plumbing problem.
http://waterheatertimer.org/pdf/No-Error-Code.pdf

5) Tankless repair is a large and developing field, and technicians train for years and still see new stuff each day.
Do-it-yourself tankless troubleshooting and repair might take equal amount of work.
First thing you want to do is read the manual several times.
Pay special attention to the word 'maintenance' and make sure you are properly maintaining water heater on yearly basis.
Next thing is to find qualified technician in your area, and put that person's number in your rolodex wallet. When technician comes over, ask that person for do-it-yourself tips and tricks.

6) Add a comment with your experience so other with same-similar problem can benefit.

7) Take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

Posted on Mar 25, 2011

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Posted on Jan 02, 2017

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WE HAVE CHANGED THE THERMOSTATS BOTH OF THEM, WE HAVE CHANGED BOTH ELEMENTS AND THE WATER STILL DOENT GET HOT ENOUGH. WE HAVE TURNED UP BOTH THERMOSTATS AND STILL NOT HOT ENOUGH. WHEN YOUR RUNNING THE HOT...


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I found a way to get warm water in the shower, but I'm not sure it qualifies as a solution. After trying everything else I thought that maybe when I was feathering the faucet in the shower toward the cold side so I would get warm water that at a certain point it blocked the flow on the hot water side enough so that the sensor in the hot water heater sensed there was no demand in the line and it shut the water heater off. To test this, I went to the kitchen and turned the kitchen sink faucet all the way to the hot side and then turned it on so that I got a small flow of water. I waited for the water to get hot to be sure the hot water heater was working. Once it was hot, I left it running to keep demand in the line and then I went to the shower and turned the faucet on. When the water got hot I started feathering the control towards the cold side and soon I had warm water. So I think I'm right in that the sensor in the hot water heater was shutting the water heater off when the demand in the shower was lowered to a certain point when I was trying to adjust the water temp in the shower.

So now I can get warm water, but it means I have to leave the hot water running at another fixture in the house to create a false demand in the system so the hot water heater doesn't shut down. Is there a way to adjust the senor in the hot water heater so that it will stay on when I'm using the shower only, so I don't have to waste water by running another faucet when I want to take a shower?

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