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  1. #1

    Replacement HSI not working

    To make a long story short, I bought a rental property and the equipment (Rheem) has not been run in 2 years.

    Listening to the sequence of events (gets to the gas valve opening and then quits) I figured the HSI was bad. I tested it and got an OL reading, so I purchased a replacement, it tested at roughly 55 ohms, so I installed it. Went through the same sequence of events and would not glow.

    The thing that kind of confused me was the wiring, it doesn't look like its wired in series like my equipment at home. It appears to be wired in parallel next to the Inducer motor on the same plastic bracket on the IFC. I tested the wires and they are not grounded or open. I tested the voltage from the IFC, and got 118 for the inducer motor, but only 0.7 for the HSI, even during the sequence of events.

    Could this be a bad IFC? I figured I should ask someone who has far more experience than me (I'm only a tech school grad) before buying a new control board.

  2. #2
    Join Date
    Dec 2010
    Location
    Woodbridge Twp, NJ
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    1,308
    Did you take that voltage reading when the HSI is energized? You know that it isnt energized the whole time.

    If you did take it at the proper time, and you took the reading from the board, and you STILL had .07v, You got a bad board (and a new HSI lol)
    Every customer you take for granted today will be someone else's tomorrow.

  3. #3
    Quote Originally Posted by DLZ Dan View Post
    Did you take that voltage reading when the HSI is energized? You know that it isnt energized the whole time.

    If you did take it at the proper time, and you took the reading from the board, and you STILL had .07v, You got a bad board (and a new HSI lol)
    Yes, I took the reading both before the HSI was supposed to be energized (got 0.7v) and while the HSI was supposed to be energized (reading did not change from 0.7v).

  4. #4
    Join Date
    Dec 2010
    Location
    Woodbridge Twp, NJ
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    1,308
    Bad board
    Every customer you take for granted today will be someone else's tomorrow.

  5. #5
    Join Date
    Dec 2002
    Location
    Toledo, Ohio, United States
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    12,914
    Twilly says sound like BS to Twilly.
    No Heat No Cool You need Action Fast

  6. #6
    Join Date
    Dec 2010
    Location
    Woodbridge Twp, NJ
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    1,308
    Well, i can only go by what he's saying. What doesnt smell good to Twilly?
    Every customer you take for granted today will be someone else's tomorrow.

  7. #7
    Join Date
    May 2008
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    Central Fla.
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    311
    Rough crowd today.

  8. #8
    Join Date
    Oct 2004
    Location
    So Cal
    Posts
    3,577
    This is not a DIY site. Call a pro.

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