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  1. #14
    Join Date
    May 2000
    Location
    BENTON, KY 42025
    Posts
    339
    You must have missed the word "TIMED".

  2. #15
    Join Date
    Sep 2001
    Location
    indiana
    Posts
    232

    ignitor

    have you not ever changed an ignitor with a weak value ? just because it glows doesn't always rule it out.
    2 hot 2 cool

  3. #16
    Join Date
    Sep 2001
    Location
    indiana
    Posts
    232

    ignitor

    there not all timed !!!!
    2 hot 2 cool

  4. #17
    Join Date
    May 2000
    Location
    BENTON, KY 42025
    Posts
    339
    Yes, but it didn't keep the valve from opening.

  5. #18
    Join Date
    Mar 2004
    Location
    Grottoes VA
    Posts
    5,856
    Quote Originally Posted by dennis663 View Post
    VERY GOOD!!!, now what tells the board to open the gas valve ?, is it because the ignitor get's hot or because it send an electrical value to the board ? & what happens if the value the board is looking for is not strong enough ?
    Dude, you have no idea what you are talking about. Edwards does know what he is talking about. I'm not trying to be smart but you may want to open up the book you are studying and read it again. If your book says what you are saying than post the book title.
    Karst means cave. So, I search for caves.

  6. #19
    Join Date
    Apr 2004
    Posts
    7,680
    Dude you are missing it... Not to hijack this thread but when a W signal calls, the inducer starts for a predetermined, prepurge time. Then as time continues, (and all pressure switches have made), the ignitor is energized. the board energizes the ignitor for a set period of time and then opens the gas valve. Shortly after that, the ignitor is denergized and a few seconds is offered for flame sense. The resistance of the ignitor has nothing to do with the gas valve. You can disconect the ignitor completely and it will still go through it's trial for ignition.

    To the OP, get a tech.

  7. #20
    Join Date
    Sep 2001
    Location
    indiana
    Posts
    232

    ignitor

    if he knows what he's talking about, then what is his diagnosis ????
    2 hot 2 cool

  8. #21
    Join Date
    Aug 2007
    Location
    MN
    Posts
    2,680
    Quote Originally Posted by dennis663 View Post
    VERY GOOD!!!, now what tells the board to open the gas valve ?, is it because the ignitor get's hot or because it send an electrical value to the board ? & what happens if the value the board is looking for is not strong enough ?
    sorry but no, an open ignitor will still let the valve open, ever wonder what that hiss is when the ignitor don't glow then something clicks... then hiiissssss! hmm might be the gas valve.

    inducer starts, pressure switch closes, relay starts ignitor warm up, after predetermined delay(different for every manufacturer) gas valve opens for trial for ignition, if the flame sensor(or ignitor itself on some models) senses flame gas flow continues and flame stays on. no flame sense(or flame) and board shuts off valve, retries 3 times(some LP units lock out after 1st trial) and will lockout, if there is still no flame sensed.

    There you go, HSI 101!!
    You can't fix stupid

  9. #22
    Join Date
    May 2000
    Location
    BENTON, KY 42025
    Posts
    339
    My diagnosis? I would need more information, like I said earlier before I told anybody to start changing parts. Is there power going to the valve? He didn't say.
    I could tell him to start changing parts, (cheap ones first of course) but that's not how people trained in the stone age do things.

  10. #23
    Join Date
    Aug 2007
    Location
    MN
    Posts
    2,680
    Quote Originally Posted by dennis663 View Post
    if he knows what he's talking about, then what is his diagnosis ????
    for the answer to that post a thread on the pro board and we'll school ya quick like. No DIY on here so we can't go too deep on this thread.
    You can't fix stupid

  11. #24
    Join Date
    Sep 2001
    Location
    indiana
    Posts
    232

    ignitor

    YOUR RIGHT, I STAND CORRECTED.i was under the impression this was a smart valve!!!
    2 hot 2 cool

  12. #25
    Join Date
    Mar 2004
    Location
    Grottoes VA
    Posts
    5,856
    Quote Originally Posted by dennis663 View Post
    YOUR RIGHT, I STAND CORRECTED.i was under the impression this was a smart valve!!!
    Rheem/Ruud are too smart to use a dumb valve.
    Karst means cave. So, I search for caves.

  13. #26
    Join Date
    May 2000
    Location
    BENTON, KY 42025
    Posts
    339
    Quote Originally Posted by karsthuntr View Post
    Rheem/Ruud are too smart to use a dumb valve.
    Don't think anybody used them in '91. Seems like they showed up in '95 or there abouts. Plus the smart valves also had a pilot.

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