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Thread: a/c problem everythings running but need help

  1. #21
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    64oz and the lineset was @20ft

  2. #22
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    It's almost acting like u don't have enough condenser at 350 psi.
    This is what I would check for

    Check to see how many circuit the condenser has?
    Remove condenser fan panel
    Run it with out condenser motor
    You need to feel each circuit
    Make sure they are all hot
    Just to make sure no circuit is plug

    It's not in ur liquid line cause ur high side would be lower

  3. #23
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    would it make the pressures fluctuate if the fan blade was bent . because the homeowner vacumed out the leaves he said and I was thinking maybe its not rejecting the heat but I dont know if that would fluctuate the pressures .thanks again

  4. #24
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    Brad u said this all started after a bad capacitor
    By any chance the condenser is going the wrong way?
    If wires are put in wrong on a 3 wire to run cap
    It will reverse rotation.

  5. #25
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    I can see head pressures that high and fluctuating if it's going the wrong way.

  6. #26
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    rotation correct . I was thinking probably running hot with those pressures popped the capacitor to start with.

  7. #27
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    Not saying this is it, but I've had two units do similar things with the fan blades in the wrong position on motor shaft. 1/2 an inch or more too low (or high though both of mine were too low) can make a difference. Check airflow with a piece of paper, move it over all fin surfaces, it should stick against coil. Any idea if the motors been changed before? Definitely seems like your having a heat rejection problem.

  8. #28
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    never been replaced but im wondering if the homeowner bent the blade cleaning out the unit

  9. #29
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    Anyone!!!!!
    I wish I was there.
    Sometimes it's hard to troubleshoot over the forum.
    I'm sure someone will be here soon.
    To straighten out both of us.

    I can tell you this much.
    If u are checking ur high side on condenser port
    And it shows that high
    Ur condenser is not doing its job.
    The flash gas to ur liquid line is what's causing ur fluctuation.
    Not enough condenser,
    Not enough air flow,
    Go ahead replace the blade
    It needs to be replace anyway, since it's bent
    It will make bearing on motor go out.

    I'll step back and see what others say

  10. #30
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    Quote Originally Posted by Brad gall View Post
    never been replaced but im wondering if the homeowner bent the blade cleaning out the unit
    I think you could tell if it was bent enough to matter. Did you amp fan motor and compare to nameplate.

  11. #31
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    Quote Originally Posted by shaka View Post
    Anyone!!!!!
    I wish I was there.
    Sometimes it's hard to troubleshoot over the forum.
    I'm sure someone will be here soon.
    To straighten out both of us.

    I can tell you this much.
    If u are checking ur high side on condenser port
    And it shows that high
    Ur condenser is not doing its job.
    The flash gas to ur liquid line is what's causing ur fluctuation.
    Not enough condenser,
    Not enough air flow,
    Go ahead replace the blade
    It needs to be replace anyway, since it's bent
    It will make bearing on motor go out.

    I'll step back and see what others say
    I agree if it's bent replace blade. Go ahead and bring a motor with you too.

  12. #32
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    should the amp draw be half of the rla on one leg I think the rla was 1.2 & .6 on one wire

  13. #33
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    Ok I have a few questions..

    How was the unit performing prior to this year? Cool the house ok? Make set point and shut off? Did you ask the Homeowner these questions?

    Are the indoor and outdoor units a match? How old is this unit?

    Also when you evacuated the system are you using a micron gauge?
    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.."

  14. #34
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    ran fine 8 years, pumped down with micron guage. matched amana 2.5 ton

  15. #35
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    Quote Originally Posted by Brad gall View Post
    should the amp draw be half of the rla on one leg I think the rla was 1.2 & .6 on one wire
    Measured on the line wires amps should be near nameplate rating. Not half.
    Did you ever make it back to this job?

  16. #36
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    going over when I get a motor an blade just i ncase. It seems the condenseris not rejecting the heat an the condeser is clean for the amp draw to be that low???

  17. #37
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    compressor may be getting to go.the cap u replaced single or dual

  18. #38
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    dual cap 35/5/440

  19. #39
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    35/5/440 dual cap

  20. #40
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    Fan motor maybe going out and not turning the rpms its supposed to be turning and took out the cap but still hasnt died yet.

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