Troubleshoot the A/C part #4. fan runs, no compressor

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  • Опубликовано: 2 дек 2024
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Комментарии • 77

  • @edwardpate6128
    @edwardpate6128 Месяц назад

    I'd say that probably about 80 to 90% of the time it's going to be the Start/Run capacitor. A pretty easy fix for anyone who has some experience working on electrical/electronic equipment. Don't forget to take a lead from your meter and ground out the capacitor terminals to ground before you mess with it, even with the pull out removed they can hold a charge for quite a time.

  • @bobheck7303
    @bobheck7303 6 лет назад +1

    Fan appears not only slow but in reverse because of the video. So many people don't have an ear for the compressor and expect it to if the indoor blower is running. Most calls are so easy with your help.

  • @KungFuMaintenance
    @KungFuMaintenance 6 лет назад +12

    Alert! Alert! Always Practice Safety! ~
    After pulling the disconnect and or turning off the breaker than removing service door before sticking fingers or hands into wiring area or closely examining unit, capacitor should be discharged by bridging cap leads with an insulated screwdriver holding only the insulated portion of the screwdriver and bridging the capacitor leads with the metal portion of screwdriver to cancel out any residual charge.
    Than unit can be examined further. It's just too easy for someone to get carried away with their discovery.
    Oh I see the problem right heregh!gh!gh!gh!gh!gh!gh!...

    • @grayfurnaceman
      @grayfurnaceman  6 лет назад +1

      Have you ever had one of the run capacitors spark when you short it?
      GFM

    • @KungFuMaintenance
      @KungFuMaintenance 6 лет назад +2

      I rarely see a visible spark. Twice though I have been spared via the practice of discharging. Once I pulled the wrong disconnect. I often show the clip on some of my outros of the sparks flying. Another time I mistakenly thought I had pulled the disconnect but had not. I show that in video in "Close Call Air Conditioner Almost Killed Myself By Electrocution Good Habits Save Lives"
      I want to say I really enjoy your videos. I think I have watched and benefited from almost all of them and look forward to more!! Thank you for sharing your hard earned knowledge and experience!!! ~ KfM

    • @Spector_NS5_RD
      @Spector_NS5_RD 6 лет назад

      capacitors inside HVAC equip that are marked "protected" have an internal or sometimes external bleed resistor. This is there to discharge the capacitor after power has been disconnected. I've had a multi meter across a protected capacitor's taps while power was connected and also when disconnected. The voltage drops to millivolts in a matter of less than a second.

    • @KungFuMaintenance
      @KungFuMaintenance 6 лет назад +2

      Spector NS5 RD most HVAC capacitors are not labeled as protected and even if they were. It's just a good safety practice to discharge. It only takes a second but it can spare you a lot of pain. Just in case a resistor lead broke or some other wire that normally would discharge the capacitor broke this is just a good safety practice to cancel out any possible charge by discharging.

    • @KungFuMaintenance
      @KungFuMaintenance 6 лет назад

      Just had one of these spark when I discharged it this morning! Caught it on film ~ Here is the video! ruclips.net/video/El6j_I_Kb3I/видео.html

  • @BeautifulWorld-zx9nb
    @BeautifulWorld-zx9nb 3 месяца назад

    Great simple video
    Thank you 😊

  • @Synthsnstuff84
    @Synthsnstuff84 6 лет назад +2

    I have a Bosch Inverter - BOVA series …. all I can really hear is the fan :)

  • @grumpyoldman336
    @grumpyoldman336 2 года назад

    I changed out my thermostat and also swapped out my contactor, im pretty sure i got all the terminals in the correct positions and my heating and AC fire up when called the issue i have is my condenser fan keeps running constantly now? Even with no call for cooling the fan is running, I pulled the breaker on the disconnect for now until i can figure out why the fan keeps running but any tips on what to look for would really help out thx

    • @grayfurnaceman
      @grayfurnaceman  2 года назад

      You probably connected the fan wire to the wrong side of the contactor. Check the wiring to the diagram.
      GFM

    • @grumpyoldman336
      @grumpyoldman336 2 года назад

      @@grayfurnaceman ill check that but I took a picture before hand and it had the black fan wire on the bottom of the contactor and they are identical units so that kind of confused me

  • @CannibalJoe
    @CannibalJoe 6 лет назад +1

    I have gas/forced air unit in our apt building balcony closet. The heat works but no AC. Fan runs and just blows standard air. No hum or any other noise. Could this be just the capacitor? Or compressor? Thanks for any help, it' 92 here right now. LOL

    • @CannibalJoe
      @CannibalJoe 6 лет назад

      Also it sat for a few months w/o running, if it matters.

    • @grayfurnaceman
      @grayfurnaceman  6 лет назад

      If nothing happens at the outdoor unit, check the breaker and fuses.
      GFM

  • @colingrant917
    @colingrant917 3 года назад +15

    What a waste of time. 6 min of my life I’ll never get back. Basically you told us to call someone

  • @steven19767
    @steven19767 5 лет назад +1

    My unit runs for hours everyday and it runs cold air but recently the fan will be running and the compressor will just quit. Then I have to pull the breaker and wait 30 mins then it will come back on and it works fine . Please help

    • @grayfurnaceman
      @grayfurnaceman  5 лет назад +1

      This is probably a compressor overheat. Most likely caused by low refrigerant charge.
      GFM

  • @calebproductions5970
    @calebproductions5970 6 лет назад +2

    Good vid I wish you would have shown how to fix a broken wire

  • @studioxps72
    @studioxps72 5 месяцев назад

    Press in the contactor the compressor starts bad cap ?

    • @grayfurnaceman
      @grayfurnaceman  5 месяцев назад

      No. Pressing in the contractor only bypasses the 24 volt control.
      GFM

  • @1MNUTZ
    @1MNUTZ 4 года назад +5

    no point in showing it if you're not going to tell them the most important parts testing the capacitors microfarad readings to see if they are in spec, the wiring continuity to the common start run terminals on the compressor, and the resistance readings on the common start run terminals on the compressor itself to see if its shorted to ground

    • @1MNUTZ
      @1MNUTZ 4 года назад

      all of which can be tested with the power off so there is no real danger anyways

    • @grayfurnaceman
      @grayfurnaceman  4 года назад +1

      @@1MNUTZ This video is for the homeowner. Testing compressors and capacitors is beyond the scope of this video series.
      GFM

  • @jjenson2006
    @jjenson2006 6 лет назад

    What would be the best way to clean out the inside of a recovery tank? What solvents could be used? Just want to make sure the inside doesn't have any sludge build up.

    • @actechformallyyomama746
      @actechformallyyomama746 5 лет назад

      jjenson2006 you can use the flush for cleaning the tank. Put flush in it with nitrogen. Shake it a couple times. Then turn it upside down and open the vapor valve. Aiming it away from you. Then pull a vacuum on the tank. Ready for use.

  • @chasewilson3540
    @chasewilson3540 6 лет назад +1

    That would be the internals of a liquid line filter drier.

  • @Wolfci
    @Wolfci 4 года назад +1

    When my AC is off inside then fan outside keeps spinning what could the problem be?

    • @Joe-ws5el
      @Joe-ws5el 4 года назад

      I would think you could have a stuck contactor in the outdoor unit.
      GFM

    • @Wolfci
      @Wolfci 4 года назад

      Joe I replaced it and when I turned it on and then off to see if the fan would stop the contactor switch I pressed it and the fan stopped now it doesn’t turn on at all ,could it be the condenser fan?

    • @rickg3437
      @rickg3437 3 года назад

      @@Wolfci did you ever find out what was wrong? Mine does the same thing.

    • @Wolfci
      @Wolfci 3 года назад

      Yes I tried replacing the contactor and didn’t do anything ,found out it was the motor, bought one of Amazon and bought the fan blades also replaced it was simple enough watched a video on RUclips how to replace it works fine now .

    • @Wolfci
      @Wolfci 3 года назад

      Better to get the fan blades because they are balanced and usually old ones it’s not easy to get them off , I paid $100 the repairman said $1000

  • @MsFishingdog
    @MsFishingdog 6 лет назад +2

    great video. thanks for your time always.

  • @zachos2
    @zachos2 6 лет назад +2

    Which brand of equipment do you prefer for your own home?

    • @grayfurnaceman
      @grayfurnaceman  6 лет назад +1

      Trane is in my house.
      GFM

    • @zachos2
      @zachos2 6 лет назад

      grayfurnaceman I have Lennox in my home. I’ve heard good things about trane though as wel.

    • @grayfurnaceman
      @grayfurnaceman  6 лет назад

      If I did not have a Trane, I would have a Lennox.
      GFM

    • @Spector_NS5_RD
      @Spector_NS5_RD 6 лет назад

      Nowadays, in 2018, everything is built down to a cost. Every single manufacturer cuts corners to squeeze out the most amount of profit possible. Equipment today is not like the equipment from 20 yrs....30 yrs......ago, no matter what that little plastic badge reads.

    • @grayfurnaceman
      @grayfurnaceman  6 лет назад +3

      I have been in this business for around 40 years and if I include my father's time and comments, about 55. I have heard this refrain during all this time. Somehow it always seems that that magic 20 to 30 years ago is always better.
      When I started in this business in 1977, the equipment had condenser coils 1/3 the size of modern coils, the efficiency was ridiculously low and I had plenty of failures to work on.
      Do you really think cheap was invented just lately?
      GFM

  • @NancyBrown-jg4kr
    @NancyBrown-jg4kr 5 месяцев назад +1

    Awesome video !! 👍

  • @alexmunoz8952
    @alexmunoz8952 2 года назад +1

    I have a burnt redline to the capacitor. If I reconnect it I still don’t get cold air so isn’t the capacitor bad also?

    • @grayfurnaceman
      @grayfurnaceman  2 года назад

      It could be. The only ways to know is either replace it or test it.
      GFM

  • @ravit6223
    @ravit6223 6 лет назад

    very nice video precise and short

  • @hg2.
    @hg2. 6 лет назад

    Great videos. Videos like these are adding points to GDP growth.

  • @deanmartin1966
    @deanmartin1966 6 лет назад

    Great video

  • @robertnatiello3814
    @robertnatiello3814 5 лет назад

    All troubleshooting points covered - i.e. everything normal and running and flushed but still no cold air. Refrigerant is good all tested. I think the GOODMAN compressor shaft is not turning (maybe slipping past) the (whatever) to circulate the coolant - how to check that? FYI every time the serviceman comes he checks refrigerant - so by checking a little bleeds out then he refills and like magic everything works fine and he tells me he does not know why it wasn't cooling ( FYI:he checked everything serviceable.) He suggested the shaft may be faulty btw. Is there anything I can do to know 100% that this is the problem before I go spend 4k for a new compressor? Thanks folks for your opinion.

    • @grayfurnaceman
      @grayfurnaceman  5 лет назад +3

      I want better than that before changing a compressor. Is the tech sure you are not leaking refrigerant? A slipping shaft? Never seen that. Maybe you need another opinion.
      GFM

    • @robertnatiello3814
      @robertnatiello3814 5 лет назад

      @@grayfurnaceman he was surprised as well and double checked everything no leak. came back in 3 months still full no leaks and no cool air. thanks! I agree ill prob go for a second opinion

  • @ottomueller4425
    @ottomueller4425 3 года назад +1

    So I just wasted 5 minuets of my life how do you fix it.

  • @ericgrosvenor67
    @ericgrosvenor67 4 года назад

    Good info. Thanks bro

  • @geojor
    @geojor 6 лет назад

    all good, thank you ...

  • @hireme3864
    @hireme3864 4 года назад

    You are showing how to troubleshoot, but not "homeowner initial trouble shoot" something like that.

  • @RineboBohead
    @RineboBohead 6 лет назад

    Good stuff.

  • @justin0957
    @justin0957 6 лет назад +1

    Moist, the big pipe should be moist

    • @keyroncampbell
      @keyroncampbell 6 лет назад

      Justin Hernandez that's the low end, which is the vapor side...

  • @rollyherrera623
    @rollyherrera623 5 лет назад +1

    Cmon? You didnt cover much??

  • @rltkktlr
    @rltkktlr 6 лет назад +1

    Keep going please

  • @leeroethler4846
    @leeroethler4846 3 года назад +1

    What was the point of this besides to tell people to call someone else

    • @grayfurnaceman
      @grayfurnaceman  3 года назад

      This is a series on troubleshoot that can be done by a homeowner. Each of these videos contain fixes that can be done by a homeowner. Not everyone is equipped to do these fixes.
      GFM

  • @benh9961
    @benh9961 2 года назад

    谢谢分享

  • @Cavenaggi29
    @Cavenaggi29 5 лет назад

    just change the freaking capacitor

    • @muneycorn6310
      @muneycorn6310 3 года назад

      will that keep the compressor contacts from pulling and staying in?My train unit the fan and the indoor blower all comes on but the compressor contacts do not pull in,would the run capacitor cause that?

  • @johnatglol4746
    @johnatglol4746 3 года назад

    So so so sooooooo slow