Question about Stiebel Eltron DHC 6-2

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My Stiebel-Eltron DHC 6-2 water heater stopped working. I replaced the circuit breaker (40A-burned out), checked the reset switch and checked if the heater was getting voltage (it does). When you open a water faucet you could hear the flow switch click and it actually moves but the heater still doesn't work.

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  • rht346 Sep 14, 2010

    I already removed the cover but I'm not sure how the thermal safety switch is supposed to look like when its been triggered. Besides that, eveything looks normal, no burn marks etc.


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Per the manual, There is a thermal safety switch located on the side of the heater assembly. You will have to remove the cover of the water heater to access it though.

If the thermal switch resets, but you still don't have hot water, the heater itself is probably burned out.

There is a 3 year warranty on the heater assembly. You should contact the manufacturer (contact info is in the manual) to explore that option.

Posted on Sep 14, 2010

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  • Sheldon Dedek Sep 14, 2010

    You likely will not be able to see the reset itself, but probably will only be able to see where you can press on a membrane of sorts to prevent from shocking your finger. Press in where you are supposed to, apply power again. If your water still isn't heated, then next step is to contact manufacturer.

    Given that the breaker burned up, I am thinking that your heater assembly is faulted.

  • rht346 Sep 14, 2010

    That reset button is flush with its housing and when I try to push it in it barely moves. Its only a button, no membrane or anything. This is with the power on or off.

  • Sheldon Dedek Sep 14, 2010

    Then the reset button is not tripped. You are looking at a heater problem now. Contact the manufacturer, the info is in manual link. At the least, they should be able to tell you the resistance (in ohms) that you should expect to see when measuring the heating element connections. That will confirm if the heater is dead.

    If you use a DMM to measure the resistance of the heater, you should see about 9.5 ohms. The manufacturer would have the exact range, but this will get you headed in the right direction.


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I am a free answerer, and I specialize in giving you resources for free
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