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  1. Replies
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    New. Simplicity board , needs new software...

    New. Simplicity board , needs new software download .call York tech support
  2. Replies
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    Perfect answer BALloyd ! I totally agree ! Rip...

    Perfect answer BALloyd ! I totally agree ! Rip that 1/4 inch out and in this case from what info is provided , 3/8 liquid all the way should suffice .

    Pull the charge , new drier , evac , weigh...
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    More info would be great ! Please !! Pressures...

    More info would be great ! Please !!
    Pressures , temps, amps , Sh, sc, etc etc .

    I constantly preach to my guys : you want my help ? Please provide all the info you possibly can . PLEASE !...
  4. Good question ! I D K ? I suppose it's either...

    Good question ! I D K ?
    I suppose it's either good or bad. Chances are the LRA was momentary before it tripped the internal protector . So if your thinking the good fuses heated up and are now weak...
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    229

    I also noticed that I used to be automatically...

    I also noticed that I used to be automatically logged in when I brought up this site on my I pad .
    Now not only do I have to reset my password every two weeks , but I have to log in each time as...
  6. Replies
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    Sorry ! The post got away from me : any way , I...

    Sorry ! The post got away from me : any way , I would be looking at the frost pattern on the evap. I'm thinking oil logging , possible distributer issues , maybe tx not feeding ? Also , make sure no...
  7. Replies
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    526

    Was the TXV replaced with the new compressor ?...

    Was the TXV replaced with the new compressor ? Also 1/4 inch liquid line ?
    How much of it in length ?
    I would be looking at the frost pattern on the e
  8. We are all uniquely talented as well . I agree...

    We are all uniquely talented as well . I agree with what you are saying but, with the shortage of good techs out there you would think the owners would appreciate a top tech wanting to be inked in to...
  9. I have been hanging out in this trade for , well...

    I have been hanging out in this trade for , well .... This is my 39 th year.
    Very proud of that . Love the trade , continually learning , never been shy to reach out for help .

    I've been...
  10. Replies
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    A few things come to mind here reading this...

    A few things come to mind here reading this thread. First. If you are working for a company that is that tight for time on a job like this and hounding their techs , you might want to consider...
  11. Replies
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    2,245

    The pump needs to run after the chiller shuts...

    The pump needs to run after the chiller shuts down . Program the BAS to over run the pump for a minimum of 20 minutes after the chiller satisfies .
    This pump over run is a must to prevent nuisance...
  12. Replies
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    What happens to the suction while the head is...

    What happens to the suction while the head is climbing ?
    When you changed the tx did you look at the distributor orfice ?
    Sure sounds like a restriction to me . Smelly oil you say . Acid test ?
  13. Replies
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    1,294

    You say you verified proper air flow . How ? ...

    You say you verified proper air flow . How ?
    Have you verified the off cycle ? In other words , does the pump down solenoid close when the stat is satisfied and does the unit pump down and shut off...
  14. I would check with your local Copeland...

    I would check with your local Copeland wholesaler.
    But if this were me , I would purchase the entire valve plate kit . If your going to take the time to pull the heads why not replace the plates ? ...
  15. The iom is available at rite boilers.com. If...

    The iom is available at rite boilers.com.
    If you yank the burners you can give it a quick exterior tube wash if your careful not to get the refractory wet.
    Also , you should order gaskets and do...
  16. Sorry x changer

    Sorry x changer
  17. I would clean the changer . Do you have an IOM ?

    I would clean the changer . Do you have an IOM ?
  18. Please measure using the same gauge.: The delta P...

    Please measure using the same gauge.: The delta P across the circ. pump. Pump amps . Could be pump impeller issues. Check the heating loop for any cross over connections.
    Take another look at the...
  19. Replies
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    791

    I tie a rope in the center of a bungie cord ...

    I tie a rope in the center of a bungie cord Then stretch the cord over the top of the box and hook into the sides of the box about 4 inches from the top on each side.
    If you use the right size...
  20. Replies
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    1,149

    Not sure about the cause of the glaze . But if I...

    Not sure about the cause of the glaze . But if I had to guess I would say high heat. The soot you talked about had to come from winding burn from what I've read.
    I think the only way to know for...
  21. Replies
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    1,149

    Unloaders ? Sounds to me like high temp issues in...

    Unloaders ? Sounds to me like high temp issues in the heads . Could be high discharge pressures constantly . Could be high sat.suc. temp as well. What kind of super heat was she running?

    If...
  22. Replies
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    2,071

    Now I'm confused . ( that does not take much ) ...

    Now I'm confused . ( that does not take much )
    Any way the o p said that there is only one solenoid on the ahu . The pic shows it ahead of the TXV.

    This would be a pump down solenoid only. Are...
  23. Replies
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    2,071

    Additionally, With reference to the O.A / R.A...

    Additionally, With reference to the O.A / R.A dampers . I assume these are opposed blade type. ? ( one mod.motor ) . Here there should be a mixed air low limit control to maintain a 55 degree mixed...
  24. Replies
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    2,071

    D, I think you are over thinking this one. ...

    D, I think you are over thinking this one. From what you are saying it sounds to me like the rapid short cycling is coming from the BAS low limit .

    If it were me here , I would get those...
  25. Replies
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    2,071

    I agree Icy , the best way to control unloading...

    I agree Icy , the best way to control unloading is based on suction pressure. That said , I have seen the BAS systems do a pretty good job of controlling based on discharge air provided a good...
  26. Replies
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    D , It sure sounds like you have a lot on your...

    D , It sure sounds like you have a lot on your mind. It took some doing but I stuck with you thru this.
    That said, it seems like you have a lot of different systems you are dealing with , with a...
  27. Replies
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    Craig 1, What type of Aaon unit are you dealing...

    Craig 1, What type of Aaon unit are you dealing with? What does it have in it mechanically ? Does it have modulating hot gas reheat ? Is it 100 % O.A. ? What type of controls other than the vcbx ?...
  28. Replies
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    Good Luck to you Sir! Please let me know if I can...

    Good Luck to you Sir! Please let me know if I can help you out any further.
  29. Replies
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    ARK : With all due respect you seem to be...

    ARK : With all due respect you seem to be frustrated here and looking for quick answers.
    And yes I do agree, one manual for the unit should cover all entities of the units functions.

    However ,...
  30. Commercial Industrial Sevice Tech. Wanted N. J. / Pa. Area

    A leading commercial and industrial HVAC & Energy Services company based in Southern New Jersey, USA is looking for experienced service techs.

    Doing business for over 35 years we specialize in...
  31. Replies
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    Is the close up crew using k o wool glued around...

    Is the close up crew using k o wool glued around the circumference of the tube sheets prior to closing the doors?
    This will save those gaskets from cooking prematurely.

    If these burners are...
  32. I understand approach as the controlled medium...

    I understand approach as the controlled medium minus the controlling medium. An example here would be on a closed circuit cooling tower the leaving loop water temp = 80 and the wet bulb entering air...
  33. Replies
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    Ok update here : After a few days run time with...

    Ok update here : After a few days run time with one compressor on the circuit running, a co worker went back and found the turned off compressor with 3/4 of a glass of oil. The problem ; the one we...
  34. Hello All , This is an excellent thread. Lots of...

    Hello All , This is an excellent thread. Lots of good info.
    BeerBeMe, I especially like the document you provided on page 5.
    However , I'm a bit confused. I have always used discharge air minus...
  35. Sorry Walk in not walik in

    Sorry Walk in not walik in
  36. Low and medium temp walik in equipment type.

    I've been replacing equipment for clients lately and have been using Larkin Heatcraft units and blowers.
    I have run into some problems with factory mis wiring and evap. Fan and bracket failures.
    ...
  37. Replies
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    1,448

    Listen here is the facts: yes a water pipe...

    Listen here is the facts: yes a water pipe exposed to the elements is a freeze potential. Fact: if you alerted the Forman or powers to be of the problem and he or they choose to do nothing about it...
  38. Replies
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    This is a great argument for the need for a...

    This is a great argument for the need for a national push for federal licensing requirements .
    Where's the freon cops when u need them??


    Sent from my iPhone using Tapatalk
  39. Replies
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    Well , as of yesterday I left the unit running on...

    Well , as of yesterday I left the unit running on one compressor in the circuit. I'm expecting to go back Monday afternoon and find a full glass of oil . ( yeah right , wishful thinking )

    The...
  40. Replies
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    2,372

    The problem as I see it is , as a result of...

    The problem as I see it is , as a result of velocity or decreased mass flow rate , the oil was pumped out into the coil and lines but can't make it back.

    The factory engineer seems to agree that...
  41. Replies
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    Well , just got off the phone with the factory. ...

    Well , just got off the phone with the factory.
    His assessment is that the original diagnoses was correct. I had a bad txv which caused low velocities and oil logged the cond. and lines.
    They want...
  42. Replies
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    2,372

    We installed the unit so I'm the first one in on...

    We installed the unit so I'm the first one in on the system. I know everything on the circuit is OEM .
    If this were a factory overcharge of oil then why aren't I getting the stuff back to my...
  43. Replies
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    2,372

    I realize that my problem is an oil logged...

    I realize that my problem is an oil logged condenser coil and connecting lines.
    Noteworthy here is : I could not use the low point cond. coil ports or the discharge tap on the compressor to...
  44. Replies
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    2,372

    No solinoids. Yes full recovery performed....

    No solinoids. Yes full recovery performed. Recovered 40 # of R-410 name plate.
  45. Replies
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    2,372

    One very important omission , the discharge...

    One very important omission , the discharge press, tap directly off the compressor read 510 psig under these conditions. That's a lot of pressure drop a cross the coil. Also , if I shut off one of...
  46. Replies
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    2,372

    McQuay RTU High Pressure lock out problem

    Model # MPSO50FE2DV1CYBV
    Ser. # FBOU120901718

    I found the unit with a high pressure lock out on circuit one.
    My trouble shooting process led me to condem the TXV which I replaced.

    This is...
  47. Replies
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    718

    Just the grills

    Just the grills
  48. Replies
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    718

    Condensating defussers

    I have a facility with several areas where the defussers are dripping during certain humid days. The typical system consists of constant volume RTU's serving individual zones. The returns are ducted...
  49. Replies
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    4,781

    I agree J P,but it seems that the controls are...

    I agree J P,but it seems that the controls are keeping the machine on, looking for dehumidification.That being said, would'nt you want to set up the controls to keep the EXV open? I've had great...
  50. Replies
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    This is all very confusing. The O.P. states that...

    This is all very confusing. The O.P. states that the E.X.V. is 100% closed when in hot gas mode.That being the case how the heck can the system dehumidify with a closed metering device? Next, what...
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