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rk-2001u Controller warranty how long?

Post in 'The Boiler Room - Wood Boilers and Furnaces' started by easternbob, Jan 4, 2011.

  1. easternbob

    easternbob Member

    Joined:
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    Central NY
    Having trouble with the controller on my EKO 25 it is the newer style RK-2001U. I thought maybe it was the temp probe since the numbers were flipping all around but I tested the probe and it is OK. Now sometimes the controller will alternate between showing the boiler temp and the setpoint (C189 in my case), without touching any buttons. I hear the relays clicking on and off afraid I'm going to wear them out.
    Anyone have any suggestions?
    How long is the warranty?

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  2. woodsmaster

    woodsmaster Minister of Fire

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    mine is 5 years 100% then pro rated after that.
  3. easternbob

    easternbob Member

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    Where did you find that info about the 5 years? I looked around and find no mention of any warranty?
  4. woodsmaster

    woodsmaster Minister of Fire

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    I have a biomass but the warranty info is in the boiler manual on mine. I got a defective controller so I called and they said it covered by warranty and there sending me a new one at no cost. I do have to send the old one back. J.T.
  5. easternbob

    easternbob Member

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    I just got off the phone with the folks I bought the EKO from (AHONA) and they said the controller has a one year warranty. So I'm outside that window. They are trying to develop a new controller so maybe I can limp along till then???
  6. rkusek

    rkusek Minister of Fire

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    Nebraska
    The standard EKO warranty reads 100% for 1st 5 years, then 60% in 6th year, 50% in 7th, and so on as far as boiler body goes. It also says below that other components have 3 yr limited warranty but doesn't specify what they are.
    /link=http://www.newhorizoncorp.com/PDF/ekomanual.pdf/link

    I would call New Horizon and explain your situation. If for some reason it wouldn't be covered it sounds like your temperature selector may be the culprit. It is supposed to switch to the C185 or whatever temp setting it is and then go back to the boiler temp after a few seconds. You describe that it flips back and forth between these two values seems like it's value keeps changing on its own. I'm not sure if this dial is a simple potentiometer (variable resistor) or some time of position encoder. Could be an easy fix if the warranty route falls through.
  7. Medman

    Medman Feeling the Heat

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    I have been experiencing the same problem, and it has been getting worse. I suspected the problem is in the power supply, since the temp is derived from a voltage-resistance bridge. This morning I have been testing the controller at work, and I have found that one of the capacitors on the power supply side (16v 2200uF) is toast. I am sourcing a new one and will keep you posted on the result.
  8. Medman

    Medman Feeling the Heat

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    I replaced the capacitor and the problem is solved. Display is stable and relays don't jump around.
    I put in a 25v 2200uF cap (all I had on hand, and for regulator caps I like to go a bit bigger anyway) an the controller is like new.
    I hope you can use this info - a savings of $200 for a new controller for me!
  9. Medman

    Medman Feeling the Heat

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    Also, the controller temp reading is now 2-4*F higher because the voltage is stable and slightly higher. This isn't much of a difference, but may affect the operation of the controller long-term.
    I will hook it back up to the temp sensor tonight and see how things look.
  10. easternbob

    easternbob Member

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    Medman,
    I know it's been a few years since you posted this, but I just saw my old controller sitting on the shelf and thought maybe I should fix it and have a spare.
    So my question is how do I identify the capacitor (16v, 2200uvf) that is burnt out? Like I've mentioned in the past I'm a forester not any kind of electrical genius.
    Thanks!
    Bob
  11. 700renegade

    700renegade Member

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