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  1. #1
    Join Date
    Jan 2012
    Location
    indy
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    471

    noisy scroll start

    Does anyone know if carrier/bryant od units require hard start kits when using txv? The tech support guy in Indy said if it needs it its on there but I dont know if I believe that. Im having a heat pump make alot of noise at start up making the homeowner a little edgey I have also considered a crankcase heater any help thank you!!! MW

  2. #2
    Join Date
    Jan 2009
    Location
    Etters PA.
    Posts
    503
    did the wiring diagram show one or is the diagram gone. that would be a good indicator. It may also even have a notation about it being an option.

  3. #3
    Join Date
    Jan 2012
    Location
    indy
    Posts
    471

    noisy scroll

    no it doesnt show one on there. It did i think show an option but I think they all do for different applications. All carriers come with txvs now so I dont know why they dont come with it. I just keep getting mixed opinions from supplyhouse tech supp dont know what is right...... really the question is would it help a noisy scroll or a heater maybe if liquid is flooding btw the charge is weighed in so I know it is not overcharged

  4. #4
    Join Date
    Dec 2002
    Location
    Arizona
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    4,421
    When scrolls first came out hard starts where not considered to be necessary, however over the years manufactures have in some cases installed them on larger tonnage units. As far as the CCH, not a bad idea on a HP.
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  5. #5
    Join Date
    Jan 2008
    Location
    In the work truck
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    3,054
    Quote Originally Posted by hvacmike85 View Post
    no it doesnt show one on there. It did i think show an option but I think they all do for different applications. All carriers come with txvs now so I dont know why they dont come with it. I just keep getting mixed opinions from supplyhouse tech supp dont know what is right...... really the question is would it help a noisy scroll or a heater maybe if liquid is flooding btw the charge is weighed in so I know it is not overcharged
    The crankcase IMO may be beneficial, I would put it on. However if the scroll compressor is starting properly I don't know what a Start Capacitor will do for you..
    What about your opinion? Is the sound normal or not?
    Gotta have the right tool for the job!

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  6. #6
    Join Date
    Jan 2012
    Location
    indy
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    471
    good question,, to me it is normal but just a little louder than I think it should be. this homeowner is used to the old r22 unit they had so they are pickin this thing apart noise wise, the defrost is louder and start up, I have been paying more atten to other 410 scrolls and they seem to make similar noise but not as loud thats my only concern, I told them its normal and its heating good they are just one of those pain in the butt so I wanna quiet it down, cant say I blame em they dont know any better

  7. #7
    Join Date
    Jan 2009
    Location
    Etters PA.
    Posts
    503
    The hard start provides a faster smoother start for the compressor so i don't believe it will quiet your comp. The correct charge doesn't guarantee that the system wont flood back there could be other issues.

  8. #8
    Join Date
    Jan 2009
    Location
    Etters PA.
    Posts
    503
    you could get a compressor jacket for it. alot of the units put them on as a standers. just for that reason

  9. #9
    Join Date
    Jan 2008
    Location
    In the work truck
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    3,054
    Well in that case see if you can get an insulation blanket for the compressor.. What manufacturer is the equipment you installed?

    I had a customer that had the same complaint. This was at a convent and the one nun slept over the unit. She had to keep her windows open all year round and swore the units were going to blow up. Its been 3 years and they are still running.

    You just need to educate the customer that it is an entirely different unit the noise is Normal. Install that blanket that some manufacturers ship with their equipment and call it a day..
    Gotta have the right tool for the job!

    Where is all the stuff MADE IN THE USA?

    "Thats what we do Troy. Incredible, Invisible, Imbelivable things. We are an Unseen, Unknown, Unvincible fraternity of craftsman.."

  10. #10
    Join Date
    Dec 2002
    Location
    Arizona
    Posts
    4,421
    Don't use the word noise, use the word sound..........it makes a different sound than the old unit.
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  11. #11
    Join Date
    Jan 2012
    Location
    indy
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    471
    it is carrier 4 ton hp ya she said the same thing it sounded like an explosion and then like a jet took off, what a emphasis on a little noisey compressor that heats fine if it exploded it wouldnt heat to well lol thanks though for the advice always app

  12. #12
    Join Date
    Jan 2012
    Location
    indy
    Posts
    471
    will they sell blankets to fit those I have only seen em on high effecient ac and hp not sure havent looked for em Koch and habegger here is where we get carrier/braynt stuff, guess I could just call tommorrow

  13. #13
    Join Date
    Dec 2002
    Location
    Arizona
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    Have you explained the defrost cycle to them, because it sounds like they have experienced it.
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