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  1. Replies
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    The remote on mine died a few days ago after...

    The remote on mine died a few days ago after about two years. New (tested) batteries.
    Just nothing on the screen. But I am not switching brands--already ordered another
    one unit--scale & remote.
  2. Replies
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    3,177

    I am in this tool forum today looking for...

    I am in this tool forum today looking for recovery machine recommendations.
    I have TWO Appion G5 Twins. When the first one died, I needed one fast and
    couldn't wait for parts, so I bought the...
  3. Bryant Package Shrader Core--odd size or non-removable?

    I have developed a habit of testing/tightening
    Shrader cores on units if I have had my gauges on
    them and noticed some time ago that Bryant package
    units seem to have a weird core that my tool...
  4. Replies
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    925

    Thanks again!

    Thanks again!
  5. Replies
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    925

    Sears Roebuck Condenser Tonnage?

    This is for my HVAC brother, so I have not seen the unit.
    But he wants to know the tonnage of the a/c as he wants
    to install it tomorrow.

    (And he's too lazy to read HVAC-Talk. :)

    He says...
  6. Replies
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    Okay, back from my day. The heat pump was the...

    Okay, back from my day. The heat pump was the first call, about 7:20am, because the lady
    had said it made the dreadful noise only when it was cold. I got there and ran around to the
    heat pump...
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    Yeah, I was thinking that were there a problem...

    Yeah, I was thinking that were there a problem with it being STUCK in defrost,
    they would have likely complained about the poor heating. They didn't. Of course,
    they DID say it would stay on for...
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    Trane Heat Pump troubleshooting.

    Model 2TWR1030A1000
    Serial 30750WL4F

    This unit had only a schematic and some charging charts,
    nothing too useful.

    Elsewhere on the forum, I read that Trane heat pumps tend to
    use an outdoor...
  9. Replies
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    566

    Gas valves with obvious vents.

    (The Search did me no favors.)

    I know a lot of gas valves on condensing furnaces, especially the ones
    with sealed burner boxes, had/have vents on their gas valves, but would
    it be a mistake to...
  10. OH!!!! I see. Learn something every day. :) ...

    OH!!!! I see.

    Learn something every day. :)

    Thank you.
  11. Thanks for the heads-up. It won't let me edit,...

    Thanks for the heads-up. It won't let me edit, so I flagged my own post.

    Maybe your browser cached my old profile?

    Anyway, thanks again.
  12. Yes, that nicely sums up the two kinds I've...

    Yes, that nicely sums up the two kinds I've encountered.
  13. Thanks for the attempt, Rundawg. The address in...

    Thanks for the attempt, Rundawg.
    The address in my settings is correct.

    I've never seen one of these units before.
    The ignitor was in a big separate cannister, not on
    the main board. The...
  14. One ignition attempt before lockout. Install manual, Bryant 577BNW024040 gas pack.

    I was troubleshooting it this past week and noticed it goes into
    lockout after just one FAILED ignition attempt. Lots of dip switches
    on the thing, but customer was not given manuals for it. (Not...
  15. Replies
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    1,376

    Not the the scale, the meter.

    Not the the scale, the meter.
  16. Replies
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    1,376

    I love my Fieldpiece scale too. (But my...

    I love my Fieldpiece scale too.
    (But my multimeter is starting to go blank briefly
    after about three years. DS (?) 35. But I will just
    buy another. Fluke products seem so antiquated
    and have...
  17. I first noticed something was wrong when I heard...

    I first noticed something was wrong when I heard the compressor's internal
    pressure release in heating mode.

    Then I switched to cooling mode and this time watched my
    gauges. Low-side dropped...
  18. Likely restriction cause on an unopened package heat pump.

    We didn't do the install and we've only been caring
    for it for six months--it is an 05-- so I'm not absolutely certain
    this package heat pump was never opened, but let us
    suppose it wasn't opened,...
  19. A puzzle. High superheat. New TXV made was no help.

    My brother does HVAC, but not this forum.
    He had a problem with high superheat.

    ========He wrote to me (only siightly edited. He has some very
    dry humor so I'm thinking the ice cube stuff is...
  20. Replies
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    542

    Look for an open safety switch.

    Look for an open safety switch.
  21. Thank you!!!!!

    Thank you!!!!!
  22. Where to get replacement heads for Mastercool Hydra Swage?

    I screwed up and broke my 3/8" today.
    It is probably the one I use most.

    But I am suprised to not see any replacement heads
    sold separately from the whole kit, either from the manufacturer
    or...
  23. Replies
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    Is this a Ruud evaporator coil?

    The outdoor unit and furnace were Ruud-labeled.
    But the evap coil only had a few markings on its label.
    Curiously, it had no model number but DID have
    a serial number:
    3/4 38107

    The top line...
  24. But the circuits cannot all be flowing the same...

    But the circuits cannot all be flowing the same refrigerant. They must be separate.
    How is that accomplished? A diagram would be good.

    Thank you.
  25. Okay, I googled. Sounds like a variable speed...

    Okay, I googled.

    Sounds like a variable speed motor.
    But I'm really asking about the pumping of refrigerant with multiple circuits.
  26. Oh, of course. (Waiting for kindly...

    Oh, of course.

    (Waiting for kindly elaboration......or a link or something. Thank you.)
  27. How do multi-zone ductless mini splits achieve multiple circuits, heads?

    My google and search skills are not turning up anything about how these
    things work in regards to multiple heads. I'm thinking they don't
    have a compressor for each head/circuit, but I have no...
  28. Carrier 581BEV102125ADAA gas package, Low ambient control gone awry.

    I was rushed so I didn't really pause to check the schematic for clues
    on this, but this unit--which has two compressors and two condenser
    fans--would periodically stop one or even both of the...
  29. Variable Speed Compressor Split Systems.

    Just wondering if anybody has experience with the hi/low side temp/pressure
    ranges with these.

    I saw one with a 13 F SH, an 8 F SC, but
    the low side sat temp was, rather than a typical 38...
  30. Replies
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    855

    That might be part of my problem--I have no idea...

    That might be part of my problem--I have no idea what subcooling should be for a fixed orifice system.
    Any guidelines for that?

    Thank you.
  31. Replies
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    855

    Low charge or liquid line restriction?

    My first positive liquid-line restriction was an easy call---I had
    a vacuum on the low side and about 200 psig on the high side.

    But I am guessing most restrictions aren't so clearcut.

    My...
  32. I was at the local supply house asking this...

    I was at the local supply house asking this question last week.

    The guy is generally well informed and had just been to a class
    on 407C. He said the two methods are to cut out the compressor...
  33. Replies
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    997

    If you are certain there was 24 V to the board...

    If you are certain there was 24 V to the board (Y/G) and
    no 24 V to the ECM motor, then it has to be the board.
  34. Replies
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    OP, here. I went back and installed the new...

    OP, here.
    I went back and installed the new factory motor this morning.

    After I removed the motor from the blower assembly, I noted that
    the bearings were rather rough AND the thing had maybe a...
  35. Replies
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    Do you know if the new motor measured 88 ohms?...

    Do you know if the new motor measured 88 ohms?
    Was it shaded pole or PSC?
    (Why does it seem many (?) package units use PSC
    and split systems almost always seem to use
    shaded-pole?)

    My...
  36. Replies
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    I like the lateral play idea as I already know...

    I like the lateral play idea as I already know the bearings
    are not great. I can't say I really tried to wiggle it.

    The new motor is due from the factory next week so I will
    check it more...
  37. Replies
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    I did the amp draw. 3.0 Amps. Only three wires on...

    I did the amp draw. 3.0 Amps. Only three wires on this motor. Speed is selected by
    attaching black to one of several terminals on motor. I didn't pull the motor to check
    LRA and the label was...
  38. Replies
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    What's wrong with this motor?

    Today I had a blower motor that wouldn't run.
    In the past, I've pretty much checked for 230V
    (or 115V, but this was a package), and tested
    the capacitance on the run cap, and then
    called it bad. ...
  39. "I'm thinking a heat pump thermostat that the...

    "I'm thinking a heat pump thermostat that the reversing valve is energized in heating by hooking the "RR" relay up to the "B" terminal of the stat."

    I'm pretty sure that IS the way it is with the...
  40. If W closes RR, then RR2 gets closed, connecting...

    If W closes RR, then RR2 gets closed, connecting R to Y which closes the compressor/OFM
    contactor, regardless of whether the tsat energizes Y. That appears to be NORMAL
    operation for this unit. ...
  41. Antique BDP Heat Pump--new tstat issue.

    Package heat pump.
    BDP/Carrier
    Product 542BU0030000PBAE (actually, first 0 is a greek phi, I think.)
    Mod 542B030HP
    serial 22/77/V/20227

    I'm guessing it is a 1977, 35+ years old.
    ...
  42. Replies
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    Use of suction line filter-driers?

    It is 2013. Sometimes you read about practices from the past and
    people mindlessly keep doing what they learned 20 years prior.
    I don't want to be such a victim.

    After a residential-sized...
  43. Replies
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    1,308

    Sorry, I left a few things out. TXV was stuck....

    Sorry, I left a few things out. TXV was stuck. Replaced already.
    Also removed the filter-drier before the TXV with copper line.
    Added bi-flow on liquid line between heat pump and evaporator.
  44. Replies
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    1,308

    TXV Distributor lines--which is clogged?

    So we have a TXV on a heat pump. Three lines come off the distributor.
    The two lines going to the lowest and middle sections of the coil, when
    the unit was mostly working okay in heat mode, were...
  45. Replies
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    5,315

    Good advice noted. I had thought this was a...

    Good advice noted. I had thought this was a general question, but it is
    now clear that defrost implementations do vary somewhat.

    Yes, indeed, it was a Trane heat pump.
    But no info with it. I...
  46. Replies
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    5,315

    Long story short is that this particular unit did...

    Long story short is that this particular unit did indeed have, in perfect working
    order, its two sensors used to determine defrost intact and wired. The loose,
    stripped wire that I found was an...
  47. Replies
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    Heat Pumps are not Air-Conditioners.

    The title was just marketing. I'm interested in differences.

    Up to now, I have mostly been checking heat pump
    performances by putting them in cooling mode, verifying
    that they cool well, before...
  48. If the intermittent occurrence seems to be...

    If the intermittent occurrence seems to be ambient--inside--temperature
    related, maybe cold spray in a can or nitrogen from a distance to cool
    gas valve or circuit board might bring failure. That...
  49. Replies
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    After reading all of this, I'm left wondering how...

    After reading all of this, I'm left wondering how other furnaces using
    the more common, no-heater fan/limit don't have short-cycling on
    occasion. But it also makes it more clear why everybody now...
  50. Replies
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    The demand defrost control measures heat pump...

    The demand defrost control measures heat pump outdoor ambient temperature with a sen- sor located outside the outdoor coil. A second sensor located on the outdoor coil is used to measure the coil...
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