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chuck chandler Posted on Aug 06, 2012
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I have a recently installed richmond water heater. When the shower is running and someone turns the faucet on in the kitchen the water gets drastically colder in the shower. We didnt have that problem with the old water heater.

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Gene Haynes

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  • Rheem Master 5,391 Answers
  • Posted on Aug 07, 2012
Gene Haynes
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Joined: May 07, 2012
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Which type Richmond water heater?
Is this a tankless water heater or tank-type?

Tankless are notorious for 'cold water sandwich' under exact conditions you describe. You might need tankless with larger BTU burner.
Don't install a tankless.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

If you have tank-type water heater, then I suspect a clog in the hot water line, or single-handle faucet cartridge in show is going bad.
Same problems can contribute to tankless problems.
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

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5 Related Answers

snap101

snap101

  • 117 Answers
  • Posted on Jul 29, 2009

SOURCE: Tankless Paloma NG hot water heater shuts down

have you checked the error codes on the heater?
you can do this by powering off the controler and pressing the up and down keys for a few seconds. this should take you into the diagnostics mode scroll using the up and down keys till you find the one that has the letter E on it and that will give you the last 8 error codes write them down and get back to me

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Anonymous

  • 10865 Answers
  • Posted on May 03, 2009

SOURCE: shower gets hotter or colder when toilet is flushed.

The problem you have is so common. It is caused by the fact that all of the water lines in the house are the same size, usually 1/2" copper tubing. The only way to eliminate this problem is to use 3/4" tubing as the main lines and branch off with 1/2" near each faucet. Not an inexpensive fix. In the short run tell everyone not to flush the toilet when the shower is in use.

A Miller

  • 8404 Answers
  • Posted on Oct 19, 2009

SOURCE: The water coming out of my faucets, washing

Your heater is on? Do you regularly drain off sediment?

Have you contunity tested your elements (power off)? Volt tested the same (power on)?

Has anyone fooled with the thermostat?

There is the possibility the dip tube (cold water going in) has broken off and instead of sending the cold water to the bottom, the cold goes straight from the cold water entrance pipe to the hot water exit pipe. Normally, one would expect cold water to sink and hot water to be on the top but, when you are drawing water off the top, with a broken dip tube, the water travels the shortest distance required, thus, your luke warm water.

I hope you can find your trouble by following one of these hints.

Thanks

a

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

motor1258

Mike Butler

  • 6674 Answers
  • Posted on Feb 18, 2011

SOURCE: How can I get an owners manual for a Richmond's

Try this link.

http://demandware.edgesuite.net/aabh_prd/on/demandware.static/Sites-Appliance-Site/Sites-CompactAppliance_Primary/default/v1298033256538/pdf/ownersmanuals/rheem/RTG74IndoorOutdoor_owners.pdf

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I have a new Richmond tankless. Every time someone turns on the water for a second the water heater comes on for a second. Is this ******* the unit ? I tell people to just use the cold water tap if th

Before calling service technician, copy following link for troubleshoot resources:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

If tankless comes on when HOT tap is turned on, then that is normal.
If tankless comes on when cold is turned on, then you might have crossover:
http://waterheatertimer.org/Crossover.html
If tankless comes on when single handled faucet is lifted in center, then that draws water from hot pipe and will activate tankless > so don't install single handled faucets to save water heater energy, regardless what type water heater you have.

Tankless require monthy-to-yearly maintenance to avoid common error codes. The product manual recommends yearly service. Since Rheem does not post service manuals, you generally have to pay somebody to take apart and test the unit. The cost of this far outstrips expected savings from owning expensive water heater that requires lots of maintenance, yet is heavily promoted as the solution to water heater problems.

Never install tankless water heater is best way to avoid complications of expensive water heater that is maintenance heavy, hard to diagnose, expensive to fix, etc.
Never expose tankless to more than 11 grains hard water.
http://waterheatertimer.org/pdf/Rheem-CondensingTankless-maintenance-2012.pdf

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

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http://www.rheem.com.au/images/pdf/owners_dom-elec_121996C_0707.pdf
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Water is either hot or cold - no in between.

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.

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