Question about Eemax EX280T2T Series 3 Whole House Electric Tankless Water Heater

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We just replaced the two elements in our eemax ps19t tankless hot water heater. We had hot water for about 5 minutes worth of a shower, now the water will only get warm. One side will light up but the other side flashes then won't light at all. Any ideas?

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6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: rinnai tankless water heater

check the scald protector on your shower,

Posted on Jan 13, 2009

  • 70 Answers

SOURCE: my eemax ex120tc 11.5kw 240v the water does not get hot enough.

you can check elements with a meter to see if they are any good. how old is heater?

Posted on Feb 09, 2009

dragonsthatk
  • 547 Answers

SOURCE: no hot water

in and out hooked up right?

Posted on May 17, 2009

  • 6 Answers

SOURCE: Noritz tankless water heater/dishwasher not hot enough to clean

You are doing everything you can. Your dishwasher probably isn't drawing enough hot water to activate the unit so opening the faucet and flowing more water will activate the unit. Just try to adjust the flow from the faucet to a point it, plus the draw from the dishwasher, will activate the unit. This will come with trial and error as I am sure you have already experienced. Also, open the dishwasher when it does get filled and check the water temperature. You might have the unit set at a low discharge temperature. Do you have a touchpad to control the water temperature adjustment?

Posted on Jun 10, 2009

rick_stokes_
  • 61 Answers

SOURCE: warm water only

You can eliminate the shower control knob possibility by turning on your hot water anywhere else in the house. If you get hot water in other places, then it could be the knob causing it. A substantial lime buildup in the tank can also cause poor heat transfer from the elements to the water.

Posted on Sep 19, 2009

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How can i to change the element of the eemax ex95?


http://www.eemaxinc.com/assets/files/Series%202-trouble.pdf

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Have Model EX380T2T2 Serial # 777604. Have purchased two EX630 heating elements and installed them. Water got hot for about a week. One more old heating element burned out. Fixed it by reattaching to...


A lot of problems can contribute to this problem.
As you know, tankless cannot be exposed to water with more than 11 grains of hardness.
Tankless require softener and filter system which can affect line pressure and flow, which will adversely affect tankless unit.

The problem could be clogged sensor, bad board, but still that doesn't explain burned out elements unless the elements were coated with sediment.
Sediment build up will kill a tankless within 2 years and render it useless and unfixable.
Yearly deliming will not restore functionality.
If pressure is a contributing factor, you can add a pressure tank that will even out the pressure.
All in all it looks like the pressure sensors and other sensors are crashing.
Call service technician, and glean from that person the tips and tricks.

Read the manual for advisories and required yearly maintenance.

You can fix this tankless problem yourself, same day, by installing $207 tank-type electric water heater from box store. Offer 10% less and also buy flexible connectors to connect to existing water lines. The cost of running and maintaining electric tank-type is cheaper long term. All costs are energy.
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html

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The center heating element is no working. How much does a replacement element cost?


the price will vary in different localities.

you should call a plumbing wholsaler in your area. Home depot and Lowes will not carry these, neither will you local hardware store.

the replacement is faily simple. Eemax is a nice heater, although faily expensive to opperate.

Aug 20, 2010 | Eemax EX280T2T Series 3 Whole House...

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 :)

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1 Answer

Fluctuating water temp. It is hot when I start the shower,


Iam guessing your using it faster than it makes hot water. May need a larger unit or a second one,in the system

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Water is too cool for shower. Is there a thermostat?


I do not believe there is a separate thermostat. However the installation guide: http://www.eemaxinc.com/assets/files/FLOCO-install.pdf gives some trouble-shooting steps. More detailed trouble-shooting is here: http://www.eemaxinc.com/assets/files/floco-trouble.pdf

If the indicator light is off when the hot water valve is open: check your circuit breaker and the flow rate of water into the water heater (it must be over 1/2 gallon per minute). If those are okay, check the resistance of the element with a multimeter - 20 Ohms or less is good, 10,000 Ohms or so indicates a bad element. The trouble-shooting guide indicates the proper points to test.

If the indicator light is on, then check the flow rate at the shower head or faucet (reduce the flow until the water comes out hot), check that the unit is installed to the correct voltage supply and the resistance of the element.

If those are okay, then check that the printed circuit board is correctly installed and that the inlet filter isn't clogged.

After that, it's call the company for their technical support.

Cindy Wells

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Our PowerStar PS19T tankless water heater


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Tankless on demand water heater.


Tankless water heaters normally take a little longer than a regular heater to provide hot water because they have to start and get warmed up. I'm guessing the heater uses a pilot light and that the short amount of hot water when you turn on the tap is hot because when the water is sitting still in the heater the heat from the pilot light is enough to get it hot. The tub faucet will get hot a lot faster than the shower because it lets a lot more water through and empties out the pipes faster than the shower. You could probably speed things up by letting the tub faucet run on completely hot for like 10-15 seconds and then turning on the shower.

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No hot water


in and out hooked up right?

May 17, 2009 | Eemax EX280T2T Series 3 Whole House...

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