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Honeywell R8991a1019

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Rocky_3
Rocky_3 Member Posts: 236
in Oil Heating
Greetings,
Came across a Honeywell R8991A1019 combination oil primary/ignition transformer the other day. The spark would energize for about 1 second, then go off for one second, then on for one second then off for one second...ok, you get the picture. The boiler wasn't having any issues, but noticed this when i was testing spark strength. This lasted all the way until primary locked out on safety. Just wondering if this is normal for this control, or whether there is an issue. Just never came across the Honeywell version of this type of combination control and was a little uncertain as to how it was supposed to operate. Anyone have any info on whether this "on/off" spark is normal? Of course there was no literature in the boiler room and I looked all over Honeywell's website to no avail and their tech support line was closed for the day. (That's what I get for being on Alaskan time).
Thanks in advance,
Rocky

Comments

  • billtwocase
    billtwocase Member Posts: 2,384
    Check you cad cell OHMs. Sounds like might be the problem
  • Marz
    Marz Member Posts: 90
    IMO I would replace that control asap. It was a short lived control which had many issues where I come from. The Carlin/Phelon is no longer available so you will have to separate the ignitor and the primary.
  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
    Oh they're still available (r8991a), but about the wholesale price of 2 ignitors and 2 primary controls combined

    There was an error rendering this rich post.

  • housefixer
    housefixer Member Posts: 4

    WWhat is the best replacement for this I have one that is not working was thinking genisys

  • HVACNUT
    HVACNUT Member Posts: 7,223
    https://forum.heatinghelp.com/discussion/comment/1874411#Comment_1874411

    What model burner do you have? You'll need the Igniter, primary, and eye assembly with lead. Is there a delayed oil valve? Is there a junction box above the motor?

  • housefixer
    housefixer Member Posts: 4
    17644508685423768255525743051868.jpg

    Model. AFG. Serial #970218-94332 no junction box not sure if it has delayed oil valve

  • housefixer
    housefixer Member Posts: 4

    Genisys 51531 is a kit has control ,ignighter, eye, junction box but I am not sure

  • HVACNUT
    HVACNUT Member Posts: 7,223

    When was the last time it was professionally serviced? Looks a little neglected. And compression fittings? In 2025? No delayed oil valve.

    Robert_H
  • Robert_H
    Robert_H Member Posts: 248

    that really needs to be cleaned, vacuum and brushes, pull the motor off, because I guarantee, that crud you see on the out side will be on the inside and interfering with proper air flow. an up to date primary control and ignition module doesn't cost to much

  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 11,559
    • Genisys 51531 is the proper control kit for you to get rid of that Genisys 51531.
    • 3/8" brush is the proper part for cleaning the crud off of the burner fan
    • Combustion Analyzer Kit is the proper tool for checking the combustion adjustments after you clean that burner and the flue passages thru the boiler/furnace.

    I strongly recommend that you do not purchase the Genisys 51531 or the 3/8" brush, If you don't have the Combustion Analyzer Kit to make the proper adjustments when you are finished.

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

  • housefixer
    housefixer Member Posts: 4

    I am going to call a professional to handel this trying to help a friend but dont want to do more harm than good. Thanks for all your help.

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