Results 1 to 8 of 8
  1. #1

    Can't seem to identify this control board. Any ideas?

    We're working on an old 10ton York Unit and we can't seem to identify this board. Part numbers are worn off. Anybody have any ideas what this is and what we could replace this with?
    Attached Images Attached Images   

  2. #2
    Join Date
    Apr 2004
    Where do all the wires connect ? It looks like either a lockout relay or anti short cycle timer.

  3. #3
    It connects to the thermostat and the air handler.

  4. #4
    Join Date
    Apr 2004
    A bit more information would help. I see 5 wires, Are they R,C ,Y does the relay breaks the contactor control ? Are their any safeties in line?

  5. #5
    Join Date
    Mar 2005
    Pacific Time Zone
    Have you called York with the model and serial #'s of the unit? If this is a factory installed part they will be able to get you the info. Also look at the wiring diagram and see what it shows the device as.
    "How it can be considered "Open" is beyond me. Calling it "voyeur-ed" would be more accurate." pka LeroyMac, SkyIsBlue, fka Freddy-B, Mongo, IndyBlue
    BIG Government = More Dependents
    "Any 'standard' would be great if it didn't get bastardised by corporate self interest." MatrixTransform - not my website.
    Versatile Hunting Dog Federation -

  6. #6
    Join Date
    Mar 2003
    I'm not so sure that it is a factory item. As Crab said, the schematic is right there, check it out. If it is not on the schematic than it is a third party add-on. My guess is that thing is some sort of time delay for the fan to let the heat exchanger warm up before starting the fan and let the heat ex cool down when the heat turns off. Just a guess. There are many options to replacing that if it does what I mentioned.

  7. #7
    Join Date
    Nov 2005
    Shreveport, Louisiana
    What abou the model serial numbers?
    UA Local 141

  8. #8
    Join Date
    Apr 2007
    Amarillo by mornin'
    It looks like an old delay on make/break to me. Not enough "stuff" on the board to be much else.
    "It's not that I'm smart, it's that I stay with the problem longer”
    Albert Einstein

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event