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Thread: a/c compressor

  1. #14
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    Quote Originally Posted by Tommy1010 View Post
    The fans would come on before the compressors.
    In resi, you don't want the fan coming on before the compressor.
    Many newer units the compressor comes on first, to allow the coil to get cold first.
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  2. #15
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    Quote Originally Posted by beenthere View Post
    In resi, you don't want the fan coming on before the compressor.
    Many newer units the compressor comes on first, to allow the coil to get cold first.
    Ahh, I didn't know that. I been in commercial since I finished school. Thats great to know though. So after the T-stat is satisfied, does the fan stop with the compressor also? I'm assuming NOT. That'll only leave a cold coil useless and make it less efficient. Am I wrong again?

  3. #16
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    *

    depending on what size your system is, the compressor will draw around 4 times as many amps as the blower

    that being said, your problem is most likely with the compressor

    can't go into more detail in this forum!

    a delay on make (for the compressor) will just raise the humidity level in your house in the cooling mode



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  4. #17
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    Many systems have a fan off delay.
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  5. #18
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    Many systems have a fan off delay.
    i have never been a big "fan" of (fan off delay)

    a sequencer with a 15 second on/off delay works well

    when trane came out with the 90 second (fan off delay) many years ago, i was disappointed with the long delay

    most p.c. card and p.c. board delay relays have more delay than needed IMO

    which inheritently raises humidity during cooling mode


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  6. #19
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    Yea, I think 15 seconds would be plenty in cooling mode.
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