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  1. Chris04626

    Chris04626 Feeling the Heat

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    Where are the dip switches? I took the control board off and looked at the back of it and i dont see anything to push up or down.

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  2. __dan

    __dan Burning Hunk

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    Chris, dip switches are tiny and located on the control board. It may be a tiny little part, 1/2" by 1/2" soldered on the control PCB, usually blue with white switches but the color does not matter.

    They are so small that you may need a magnifying glass and small finish nail to throw the dip switches. They are about the same size as a small IC chip. They are not normal size switches.

    In the factory literature there may be a picture showing the part location.
  3. Chris04626

    Chris04626 Feeling the Heat

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    Loc:
    Maine
  4. __dan

    __dan Burning Hunk

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    The blue things with the white dials are probably pots, potentialometers, dial adjustable resistors. Do not touch them.

    It's too small to see eye by squinting but, working your from the PCB upper left corner, there is the fuse then the control power transformer. Right under that is some black thing that could be the DIP switches or it could be the tan thing.

    You need to look at it with magnification, then you're looking for something similar in size to the IC chips but has tiny tabs on it that can be slid. They are the DIP switches. DIP is dual in line pin, same size as the IC's for PCB mounting. Once you find the DIP package, look at the four corners. One of the corners will have an indicator, a circle or triangle, where the other three corners will just be squared. The odd corner is indicated "switch 1" with the remaining switches following left to right.
  5. __dan

    __dan Burning Hunk

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    I am not familiar with the Harmon. I would recheck the instructions to be sure I was looking in the right place. Calling the factory is a good bet also. Make sure they support the product.

    DIP switches may be set at initial product install, setup programming. They should never be touched routinely after the boiler has been put into service. Why is it you need to adjust the DIP sw's.
  6. Chris04626

    Chris04626 Feeling the Heat

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    i get alot of smoke at start up to the point neihbors stop thinking we are on fire lol. If read on here people adjustign there switches solved their issue
  7. __dan

    __dan Burning Hunk

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    Understood, but that does not tell me what the DIP switches are controlling. What effect the change makes.

    You should only be setting the DIP sw's at the direction of the factory.
  8. Chris04626

    Chris04626 Feeling the Heat

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    from what ive read they change how much pellets are fed at start up
  9. Chris04626

    Chris04626 Feeling the Heat

    Joined:
    Sep 19, 2008
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    453
    Loc:
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    found mine, mine are actually on the front side of the control panel, if you cut out a little piece they are visible from the front, just the first 4 switches you can see. the yare set to on off off
  10. __dan

    __dan Burning Hunk

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    Yep, I googled and found the earlier thread.

    http://www.hearth.com/talk/threads/back-fires-feed-rate-dip-switches-and-smoke-harman-pb-105.25243/

    And found a bigger photo. (click on the photo)

    http://pellethead.com/products/1%2d00%2d05886-{47}-3%2d20%2d05374-%2d-Control-Board,-Platinum.html

    If you feel in any way that Harmon should be doing something better with their products, I'm a big advocate of calling the factory and telling them directly. Reading that thread, If it was me, Harmon would take some heat over the phone.

    It is one of the few ways to motivate Harmon to compete. Let them know what the customer demands and what they will not tolerate. The market needs to mature with higher quality products.
    BoilerMan likes this.

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