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Type: Posts; User: Dallas Duster

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  1. Replies
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    What kind of failure are you seeing ? Inquiring...

    What kind of failure are you seeing ? Inquiring minds want to know.
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    336

    We'll a restriction would give you some higher...

    We'll a restriction would give you some higher SH. Maybe your TXV's a little oversized or now enough load on your evaporator ?

    Plus I think it's a 38APD.
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    869

    When I had an issue like this there was a...

    When I had an issue like this there was a removable screen/strainer where the sock attached to the AHU. It was plugged up. I took it out and cleaned it a problem solved. Just something else to check.
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    Fixed orifice.

    Fixed orifice.
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    Hate to say it but I would have changed the drier...

    Hate to say it but I would have changed the drier while you had it pumped out just to be sure.
  6. My gues is that the AHU was probably matched with...

    My gues is that the AHU was probably matched with a McQuay 2 speed compressor . It probably matched the coil staging. Your stuck running all or nothing, maybe add some hot gas if possible.
  7. Have you tried disabling the digital scroll to...

    Have you tried disabling the digital scroll to see if that helps ?
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    540

    Just to add. I can see a possible issue if that...

    Just to add. I can see a possible issue if that condensing temp doesn't rise with that resistor on there.

    Alert Codes 143, 144, 145 (Failure to Pressurize) — Alert codes 143, 144, and 145 are for...
  9. Replies
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    540

    Did you verify that the SCT sensor for circuit C...

    Did you verify that the SCT sensor for circuit C was not broken and just hanging in the air. It's supposed to clamp on to the condenser coil.
  10. Replies
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    If he offered up as much information to the...

    If he offered up as much information to the counter guy that he did here I can see why he didn't get an answer.
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    Definitely not worth it plus I don't think VAV is...

    Definitely not worth it plus I don't think VAV is allowed for residential here . Gonna need fire dampers and other safety devices plus with a common return your going to get cross contamination (...
  12. Makes sense now as to why you were reading the...

    Makes sense now as to why you were reading the high DP. Just sounds like your system was low on water, depending on the makeup type there could be a strainer in there too.
  13. Is there a pump package on this chiller or is the...

    Is there a pump package on this chiller or is the pump external of the chiller ?
  14. Yep clear as mud.

    Yep clear as mud.
  15. There are actually (6) different combinations of...

    There are actually (6) different combinations of condenser fan motors that can go on that chiller the serial number will tell the parts guys what you need? You will also need to know what Motor...
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    If that's the case you could always upgrade it to...

    If that's the case you could always upgrade it to the motor master 5 if price is not a problem.I have never heard of a timing issue if that was the case a time delay relay could be thrown in there.
    ...
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    559

    The wiring diagram shows an aux contact to keep...

    The wiring diagram shows an aux contact to keep the low and high speed contactors pulling in at the same time .
  18. Replies
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    559

    Can you duplicate this using test mode ?

    Can you duplicate this using test mode ?
  19. Replies
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    559

    Is you auxiliary contact on your high speed...

    Is you auxiliary contact on your high speed contactor working properly ?
  20. I would say it's pretty recent but what you have...

    I would say it's pretty recent but what you have there is the compressor serial number and not the actual chiller model and serial number. My guess is that it's a 19 series chiller.
  21. What kind of unit?

    What kind of unit?
  22. NSTV is not going to download to an EXV driver...

    NSTV is not going to download to an EXV driver board the only benefit you will have is to see the EXV maintenance tables. What type of chiller are you working on there?
  23. Replies
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    381

    I think hvac69 may have fixed it for you Joe did...

    I think hvac69 may have fixed it for you Joe did tech although it sounds like you may have 3rd party controls on your unit. Your unit does have a DP switch which does have the ability to monitor fan...
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    1,147

    You are correct so I read it wrong. Now I see the...

    You are correct so I read it wrong. Now I see the 50hz info below in bold lettering .
  25. Replies
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    Why not put a loss of charge switch on the high...

    Why not put a loss of charge switch on the high side of the system?
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