Navien NHB-150 LOOK!

Discussion in 'Tankless Water Heater Forum' started by plumber69, Dec 3, 2020.

  1. plumber69

    plumber69 In the Trades

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    Jun 20, 2014
    Location:
    Prince Rupert, British Columbia
    Went and looked at this wall hung boiler. Lots of wires inside are cooked too. What would cause this
     

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  2. fitter30

    fitter30 Well-Known Member

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    Occupation:
    Retired service tech
    Location:
    Peace valley missouri
    Does the wiring insulation look melted or black and burnt? Melted something shorted out pulling enough amps on small wires to overheat them. Burnt isn't that burn hole in cover in line to burner sight glass?
     
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  4. plumber69

    plumber69 In the Trades

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    Jun 20, 2014
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    Prince Rupert, British Columbia
    Its in line with site glass, there are multiple spots where wires are burnt, and melted plastic
     
  5. fitter30

    fitter30 Well-Known Member

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    Glass intact?
     
  6. plumber69

    plumber69 In the Trades

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    Jun 20, 2014
    Location:
    Prince Rupert, British Columbia
    nope broken right off
     
  7. fitter30

    fitter30 Well-Known Member

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    Retired service tech
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    Burner either overfired , delayed ignition or burning really crappie ( just like the fish) making the glass fail.
     
  8. plumber69

    plumber69 In the Trades

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    Jun 20, 2014
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    Prince Rupert, British Columbia
    Wouldn't there be error codes
     
  9. TEch99

    TEch99 New Member

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    Jersey
  10. Navien Inc

    Navien Inc New Member

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    Sep 3, 2019
    Location:
    20 Goodyear, Irvine, Ca
    This post has come to Navien’s attention and we are interested in speaking with anyone that has experienced this issue. We realize this post was made a few months ago, but we would like to speak with anyone who had this to try and find out what caused this. If you are willing to speak to us, we would like to gather some information from you. We can have someone call you or your plumber. Please just let us know. Thank you.
     
  11. Terry

    Terry Administrator Staff Member

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    Aug 17, 2004
    Occupation:
    Plumber
    Location:
    Bothell, Washington
    I have no idea what happened above, but I have been running a Navien in my home for about eight years, and just installed one for my daughter last month. The only thing I have done with mine is clean out the incoming screen on the air intake two years ago. I'm on Woodinville city water which is pretty clean.
     
  12. Navien Inc

    Navien Inc New Member

    Joined:
    Sep 3, 2019
    Location:
    20 Goodyear, Irvine, Ca
    Thanks, Terry! We’re glad to hear you’ve had a great experience with the product to continue using them elsewhere. Please feel free to reach out to us if you ever have any questions or concerns at productservice@navien.com. Thanks again.
     
  13. TEch99

    TEch99 New Member

    Joined:
    Oct 14, 2020
    Location:
    Jersey
    Its strange you come here praising the forum owner but won't address the oil found in in your boiler, the issue with your boiler is not just a reliability issue but the high cost price by installers, the high maintenance fees and the high cost of repair once an installer finds out the home owner has a Navien. It is not a cost effective solution to have navien vs a conventional boiler . One will never recoup the upfront cost invested into these units, that's aside from other facts that plaque this product such as poor customer service. In my opinion your boilers are junk compared to a conventional chimney vented boiler, this factors in maintenance hours, installation cost, reliability, and price, all for an extra 10% of supposed energy savings. NOT WORTH IT.
     
  14. TEch99

    TEch99 New Member

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    Oct 14, 2020
    Location:
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    And just because you did not experience the above does not mean there isn't an issue with these units. Hope this is a fair statement.
     
  15. fitter30

    fitter30 Well-Known Member

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    Feb 2, 2020
    Occupation:
    Retired service tech
    Location:
    Peace valley missouri
    Probably not it wouldn't be flame failure burner is running with delay ignition, flue temperature limit 230* for 10 seconds before it trips, if burner was burning dirty flue temperature is down and flame might be wiping the glass. Without tearing heater apart its only a guess.
     
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