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

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10 minutes into my shower i get a spurt of cold water... whats wrong

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Check your gas pipe size and make sure it can keep up with the demand. also check your filter to make sure it's not clogging off with debris

Posted on Oct 03, 2009

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Posted on Jan 02, 2017

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Rheem warrior 40 gal warrior


You could start by seeing if the thermostat is wide open. Sounds like it is on low or vacay mode. How far is the run between your heater and the bathing area. Might need to insualet some piping.

Sep 24, 2013 | Water Heaters

1 Answer

Atwood gc10a-4e only producing luke warm water


make sure bypass on back isn't open or half open then see if mixing valve on shower or outside shower off if all ok possible bad temp sensor

Feb 19, 2013 | Atwood Mobile Products Atwood 10 Gallon...

1 Answer

I have a Rinnai Tankless Water Heater that will turn to cold water 10-15 minutes into a shower. The explanation has been that the water pressure on the hot water has to be so many Gallons per minute, but...


Bad PC board.
Bad sensor.
Don't buy a tankless because the problems can be endless.

Before blaming the tankless however.
Perform the yearly required maintenance on burner
Delime the unit.
http://waterheatertimer.org/pdf/Bosch_Descaling-heat-exchanger.pdf

Remove and clean aerators, replace low-flow shower heads with large water-wasting shower heads.

IMPORTANT check all your single-handle faucets for crossover.
Water getting cool after 15 minutes could be bad cartridge on another faucet.
http://waterheatertimer.org/Crossover.html
http://waterheatertimer.org/pdf/No-Error-Code.pdf

Oct 24, 2012 | Rinnai Webstone The isolator EXP tankless...

3 Answers

Water turns cold very quickly


I had the EXACT same problem (installed my tankless last winter and worked fine, now this summer it fluctuates, have to turn the shower completely off and then on again to get any hot water and then it only lasts for a couple of minutes!) Argh - it is frustrating!

Here's what I found: the demand for hot water is lower during the summer (hot) months because the "cold" water coming in is already quite warm. You don't need as much hot water to make the shower temp comfortable. SO, my tankless was shutting off due to low flow demand. I've removed the flow restrictor from my shower head and it helped alot but didn't completely solve the prob. Next step is what has been recommended to me by several people but is much more expensive - change the pressure valve on your shower to a temperature valve. Or just wait til winter and it should work ok again :)

Jul 06, 2010 | Bosch & Tankless LP Hot Water Heater

1 Answer

I have a 40 gal Whirlpool single element 3500 mobile home hot water heater. I have replaced the element thermostat high pressure valve (because it was leaking) & flushed for sediment. In morning I wash...


A 40 gal. electric water heater will give you aprox. 32 gal. of hot water in one setting, since they do not reheat as quickly as gas. So if you are using a newer 1.5 or 2.0 gpm shower head. You could take a 16 minute shower with straight hot water. If you are running 2 new shower heads at once you could get 8 minutes. If you using the tub spout the times decrease. Some of my customers like to turn up the temerature on the thermostat a little so they can mix more cold and get it to last a little longer. Be very careful doing this.
If your water heater has a lot of calcium built up in it the times will decrease.
With out seeing the heater, you mention it is a mobile home heater so I am guessing that it is bottom fed.
I hope this has helped.

May 09, 2010 | Water Heaters

1 Answer

Rheem tankless water heater error code C4 13??


check diaphrapm valve or micro/switch best of luck

Sep 13, 2009 | Rheem RTG-53PVN Indoor Natural Gas...

1 Answer

Bath tub water doesn't stay hot


it is because the tub has a temp control valve in it so if you were to put more cold with the hot it will last longer but still won't be all the way hot,, now a days people are suing the manifacture because they are getting burned form the hot water so they put these saftey temp controls in place of the old style 2 or 3 handle faucets,, there fo no more real hot water nothing you can do outside of change to the othere type of faucet 2 or 3 handle tub shower diverter,, that why the water is hot in the sink but not the tub.....

Jun 23, 2009 | Water Heaters

3 Answers

I purchased a whirlpool 40 gallon hot water heater model #BFG1J4040T3NOV in November of '08. since its been installed i been having a problem with the water staying hot for more than 1 shower. After about...


Will the water stay hot in the kitchen sink? Try to isolate the problem. If it is happening at all hot water locations, then it will be related to your water heater. If just in the shower then it is related to the mix of water ratio coming out of the shower hear. If its only the shower, then you are getting too much cold and not enough hot through the pipes. This can be very simple to fix by replacing the handle going to the shower. If this does not work then you may have a problem in the hot water pipes. After you isolate the problem, please post another question here.

Apr 16, 2009 | General Electric GE SmartWater Household...

1 Answer

Hot water is cutting out after 2 - 3 minutes whilst showering


check the screen on the cold water intake on the cold side,, you might have to flush the system out, and do you have the shower head water restricter in, if not you may be using to much hot water,,, how many other hot water fixtures are running at the same time? try running just the shower,,,if this is a tank water heater the dip tube could be bad that is on the cold side it takes the cold water to the bottom of the tank and forces the hot water out,, if you ar only getting a couple of min of hot water and the dip tube is bad it is not going to the bottom but just at the top and not getting all the hot water you will need a plumber

Mar 21, 2009 | Water Heaters

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