Question about RTO Atwood DSI-RV Water Heater-6 Gallon

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I reinstalled my electric water heater after replacing a floor. That was four hours ago. Still no hot water and I hear water running like a washer is filling. What's wrong?

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If you failed to turn off the breaker before you emptied the tank then the element had no water to cool it. It would have blown a hole in it. If it is ok by some miracle then try turning off the breaker and turning it on again. As for the sound it would only do that if there was a large vapour lock.

Posted on Nov 23, 2013

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Posted on Jan 02, 2017

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SOURCE: Smelly water from electric hot water heater 40 gal.

turn the power off and flush it out by letting the tap run for an hour or so
i think it could have lime scale in it or the element is about to blow if its the type that you can get the top off look inside it you may see the fult even kettle cleaner may be needed to clean it out, but dont go drinking that water???

Posted on Oct 24, 2009

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SOURCE: Hot water heater is not working correctly on electric

Check that the by-pass valve(s) on or near back of water heater are in the proper position. If your stumped on how they should be for normal operation, remember this. Cold water has to flow into bottom of tank, so that valve needs to be open straight into that fitting. Then the hot comes out the top, so that valve has to be open as well. Any valves in between those lines need to be closed, otherwise it will mix cold and hot . If still not sure, get back to me, with location of any valves there, and I'll guide you through it.

Posted on Apr 25, 2010

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sounds like an element is burned out. if your water heater lost its water, probably from siphoning, and the power was on, then it most likely burned out the element.

you will need to replace. replace both the upper and lower elements at the same time, don't just replace the one that's burned out.

turn off the power to the water heater, be sure to check with a volt meter to make sure its off. drain the water heater.

remove the wires from the elements, not the thermostat, and remove the element. on the newer water heaters they screw in. take that with you to the store so you can match it. get 2 of them.

be sure to use the new rubber washers that come with the elements and make sure the threads on the heater are clean. be careful not to drop or bang the elements against the heater when installing, they can be fragile.

do not over tighten! snug is good enough. when you get both elements installed, start filling the heater with water. if you have any leaks, tighten the elements a little more. now hook up the wires you removed from the elements. doesn't matter what position or screw they hook to.

start bleeding the air from the water heater, turn on the hot water on a faucet in the house, when it quits spurting air and runs water smoothly turn it off, and turn the power back on to the heater. use your amp meter to make sure. initially there will only be power at the top element 220v to 240v

make sure the thermostats are set evenly, (125* setting) if the settings are mismatched (one at 125 and one at 135) the heater will not function properly.

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Something you can do, following your fathers logic,   is to attach a hose to the drain of the tank and run water from the bottom of the tank into a drain untill all the sediment is removed (Water runs clean). This is normally done once a year as preventive maintenance  on all tank type water heaters. The logic sounds good to me. 

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It sounds like you might have scale buildup on the elements. If its a dual element unit it will ground it self out and it sounds like its boiling. constance usage of electricity, but no water usage. Drain it, and pull the element and replace the element.

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If the water still does not heat, then you have to troubleshoot to find the problem. With a voltmeter determine if 240VAC is actually getting to the water heater. Remember, the upper element has priority over the lower element, and if the water is cold, the upper element will try to turn on and this locks out the lower element (only one element is allowed to heat at any given time). The lower element comes on ONLY after the upper thermostat is satisfied. Therefore if the upper heating element is burned out you will never get any hot water. If you suspect this, TURN OFF THE POWER TO THE HEATER and take a resistance check of the upper element.

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