Compressor Issues

Discussion in 'HVAC' started by Josiah31, Apr 25, 2018.

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  1. Apr 25, 2018 #1

    Josiah31

    Josiah31

    Josiah31

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    I'm hoping you guys can help me out before I have to pay someone to come fix my issues.

    So I turn my ac down on my nest thermostat to call for AC. The fans come on and air handler kicks in, but it only blows out air. I got outside and notice my Compressor doesn't turn on. I can go to my breaker box, shut off the power to heat/AC and turn it back on, Call for AC again and sometimes get my Compressor to kick in and cool my house down completely with no issues. I just notice whenever I change to heat and back to AC I usually have to follow the steps again to get compressor to engage. I opened up the air handler and the drain pain has no water in it. No condensation or ice built up. I did replace the float switch a few months back when that was having issues. My home is only 3 years old. It's electric air handler. Lennox, Model number is CBX25UH-036-230-1.

    Any ideas what can be causing this? before when I had float switch issues, my pan use to fill up with water a lot. I had to clean the pan all out and the new builder had lots of crap in the pan. Could something be stuck? I pour little bleach down the drain every time I change air filter about every 2-3 months. Help!!

    Thank you!

    Josiah
     
    Last edited: Apr 25, 2018
  2. Apr 25, 2018 #2

    Josiah31

    Josiah31

    Josiah31

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    I want to add that nothing trips on my breaker either.
     
  3. Apr 25, 2018 #3

    Josiah31

    Josiah31

    Josiah31

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    Anyone have any ideas as to why flipping my breaker will cause the issues to go away? At least for a cycle until it has to come back on again?
     
  4. Apr 25, 2018 #4

    joecaption

    joecaption

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    I'll share a few things we have gone through heck on a 2 year old Trane unit.
    First time it was a burned up breaker.
    Second time the same thing, leaving burn spot on the Buss bar.
    Third time the terminals were burned right off of the emergency heating coils.
    In our case it turned out the so called electrician had used undersized wiring.
    Not surprizing since he also connected 240 volts by mistake to some outlets and took out a brand new lift chair, TV, DVD player, floor mounted A/C unit.
    Trieed to tell us lightning must have done it, Hmm no lighting storms on record since it was wired.
    Rewired the whole house and never marked anything on the panel box cover.
     
  5. Apr 26, 2018 #5

    havasu

    havasu

    havasu

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    Every time I have an issue, I call an A/C guy and his prognosis is always the same. They say, "your capacitor is fried" They always install a heavy duty one, and the problem goes away. During a hot spell a few years ago, my old house, my G/F's house and my house all had bad capacitors. I pay the $250 for the $50 part, and i am once again cool.
     
  6. Apr 27, 2018 #6

    kok328

    kok328

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    next time it happens take voltage readings on the compressor line voltage at the compressor disconnect and also take voltage readings on the contactor coil for the fan/compressor.
    from there we should be able to work backwards where things might be harder to access.
     

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