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  1. Yes I have professional meters and know how to...

    Yes I have professional meters and know how to take measurements.

    I've had the current heat pump a bit over 4 years and have lost the fan side of the capacitor twice now, each at a 2 year mark. ...
  2. Are Warranty Start/Run Capacitors Reconditioned?

    Granted it would probably depend on the mfr, but do any pro's out there know if start/run capacitors obtained under warranty are typically reconditioned or new? (BTW, we are talking made in US...
  3. Start/Run Capacitor - What Signs Indicate Wear or Imminent Failure ?

    Can the experts on the forum share their experience with run capacitor failures, regarding how they exhibit signs of pending failure? Let's remove the catastrophic failure scenario (bulging,...
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    Yes, wire colors are generally the same as stat. ...

    Yes, wire colors are generally the same as stat. I have learned a bit more in my research.... apparently sprinkler wire is often not UV resistant and doesn't have a very high heat rating on the...
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    Sorry, forgot to better explain the application: ...

    Sorry, forgot to better explain the application: The context was to replace the stat wiring between the AHU and condenser of a heat pump system.
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    Stat or Sprinkler Wire?

    I need to eventually run a new stat wire (due to cross-conductance) and when I went to the store I also found sprinkler system wire. Both the stat and sprinkler wire are 18/7. But the sprinkler...
  7. Thanks, I knew to get the system shut down ASAP,...

    Thanks, I knew to get the system shut down ASAP, but in hindsight wish I had done as you suggested instead. Because by shutting the whole system down, the frost on the evap coil began quickly...
  8. That's it! But this must have some serious...

    That's it! But this must have some serious Carrier marketing spin to it because the defrost mode is still so loud .... I've heard air brakes on semi trucks and pressure relief systems on old steam...
  9. Opinion Please on Possible Damage and Need for Tech Inspection

    I recently had a problem with my heat pump (5 year old Carrier split system w/Scroll) and located the problem as a bad stat wire, which I am in the process of permanently fixing. Since I have...
  10. The story goes like this: About 5 years ago I...

    The story goes like this: About 5 years ago I hired what I thought was a credible company, and rather costly no less. At that time the original lineset was 15 years old, and it ran through a chase...
  11. In my case it was more complicated, problem was a...

    In my case it was more complicated, problem was a BEAR to hunt down... the yellow cool cycle signal wire was randomly getting some voltage floated onto it from the orange change-over valve wire. So...
  12. Thanks everybody for your replies, much...

    Thanks everybody for your replies, much appreciated.

    I am 99% certain my Carrier system does indeed stop the compressor during a defrost for a brief period, not certain if it at the beginning or...
  13. I probably should have clarified: In my specific...

    I probably should have clarified: In my specific instance the "issues" with the signal wires was voltage transference from one to another. The implication being that some form of arcing between...
  14. Stat Wire Opinions Please - Reuse or Run New

    If you had a heat pump stat wire that had an issue with some of the signal lines and it was going to be a pain in the rear to try and run a new one (for example in a chase under a house) would you go...
  15. Carrier heat pump, basic split system, single...

    Carrier heat pump, basic split system, single compressor, nothing fancy.

    My system most definitely stops in defrost mode. I want to say it stops first near the beginning of defrost mode for a...
  16. As far as I'm aware, at least with my system, the...

    As far as I'm aware, at least with my system, the installing tech said it stops and then restarts when the valve changes direction. If that is not true then what is the system doing during defrost...
  17. Can Somebody Explain Changeover Value Protections To Me Please?

    I was troubleshooting my own system WRT an electrical logic problem and an unrelated hypothetical question crossed my mind which I'm hoping maybe some experts would educate me about....

    There is...
  18. Latest: After more process of elimination the...

    Latest: After more process of elimination the problem is indeed in the stat wire. Now I only need to determine if it is in the section between the platform and where it enters the AHU, or rather...
  19. Ok, the demonic system just started in again,...

    Ok, the demonic system just started in again, albeit minimally. I finally had enough and pulled every meter I have out of the closet and connected them all, watching real-time how each terminal/wire...
  20. If I wasn't the one caught in this mess I would...

    If I wasn't the one caught in this mess I would probably be chuckling, because it just got a whole other level interesting today...

    So I spent hours researching local techs and got a referral to...
  21. Would just any contractor still take care of any...

    Would just any contractor still take care of any warranty "paperwork" and red tape for the part(s), or might I be left having to deal with Carrier directly if not repaired by an authorized dealer? ...
  22. Understood I would still have to pay labor, but I...

    Understood I would still have to pay labor, but I hoped I would get the stat and the system fixed in about a day, two tops. Now that I am being jacked around however, I don't have much choice to but...
  23. It is an installer-only stat (non retail) with 5...

    It is an installer-only stat (non retail) with 5 year warranty. And I already tried to tell the installer it was his responsibility, the service manager insists it is not. :gah:

    Onto a formal...
  24. UPDATE: Ok, after further testing with Honeywell...

    UPDATE: Ok, after further testing with Honeywell over the phone, the stat is in fact bad. So I turn around and call my installer and upon relaying the findings he agrees the stat is likely the...
  25. It hasn't constantly been doing anything, that's...

    It hasn't constantly been doing anything, that's the main problem. Well, let me rephrase that , up until the discovery of the potential anomaly with the yellow wire voltage there has been no...
  26. BTW, my system (stat included) is still under...

    BTW, my system (stat included) is still under warranty, so again, this isn't a DIY, it's simply pre-investigative troubleshooting. Besides simply wanting to learn, the labor and trip surcharge comes...
  27. Not that I didn't anticipate this but was told...

    Not that I didn't anticipate this but was told today by my tech that until the system gets into some kind of persistent state that can be troubleshot, there is no point in coming out. I cannot DIY...
  28. Spoke too soon. Blower fan still randomly cycles...

    Spoke too soon. Blower fan still randomly cycles on and back off quickly during the off-cycle. And the outside condenser unit, while more reliably starting on queue, is still occasionally starting...
  29. Woke up this morning, turned the system on and...

    Woke up this morning, turned the system on and everything is suddenly working normally. It is as if the system slowly healed itself over the last two days.

    Going back to the original incident,...
  30. As of this evening the AHU fan is now tending to...

    As of this evening the AHU fan is now tending to stay off at the end of a cycle but the condenser is now taking about 5 minutes to actually turn on after the cool cycle has started.

    This is...
  31. Clarification: The fan actually resurrects...

    Clarification: The fan actually resurrects itself at the strange low speed but then starts turning off and back on again repeatedly (never going faster than the very low speed). I'm guessing...
  32. AHU fan resurrecting itself and sticking on low speed....

    Hello,

    I am FRYING here in FL right now with my system flaking out and am probably going to have to wait 1-2 business days to get extra local assistance. So anything I can do in the mean time to...
  33. Normally I would PM you however given the nature...

    Normally I would PM you however given the nature of my reply I am hoping the moderator will allow it since it closes the question out...

    I believe you are referring to the condenser clunk on cycle...
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    Yes. Triangle shaped. One big duct entering and...

    Yes. Triangle shaped. One big duct entering and 4 smaller ones exiting (2 each on the other two sides) And, the box is almost twice as high as it needs to be. The top of the biggest duct connects...
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    New finding that I need to test again tomorrow,...

    New finding that I need to test again tomorrow, but it seems something else additional (or related) may be going on...

    The measurements I had taken for the purpose of this whole discussion was...
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    The measurements taken at the AHU were taken...

    The measurements taken at the AHU were taken directly ABOVE the AHU, so any heat generated by the fan is already largely reflected in the readings.
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    Okay, here's the numbers. It has been a bit...

    Okay, here's the numbers. It has been a bit overcast during the days lately so the attic temps are about 10 degrees lower than normal, but at least you can get an idea....

    Night: Attic Temp =...
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    Update: Today I pulled one register and the...

    Update:

    Today I pulled one register and the boot/box is flush to the drywall. I also put the thermometer up into the duct, well past the boot. Same result, still gaining about 5 degrees. So the...
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    I have one other new theory/question to run by...

    I have one other new theory/question to run by you guys...

    I had speculated at the beginning of the thread maybe the 5 degree increase being seen at most ducts was due to attic infiltration in the...
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    Is there anything I could do to further insulate...

    Is there anything I could do to further insulate the ducts and the supply plenum? If I were to go buy a bunch of thin bat insulation and wrap it around (or lay it over) the main line and the supply...
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    Thanks for the replies thus far. Lots of...

    Thanks for the replies thus far. Lots of questions, will try to answer them all here....

    No, roof was not layered before, always and still is a single-layer shingle, single felt underlayment.
    ...
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    I used a digital probe-type thermometer, nothing...

    I used a digital probe-type thermometer, nothing high-quality but adequate enough for simple troubleshooting purposes. It's a fast-reaction type so I am able to watch temperature fluctuations....
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    Actually, I did make the mistake of a slightly...

    Actually, I did make the mistake of a slightly darker roof. But realize, when I say darker I'm talking just a shade darker. The new roof is gray as well but if the old roof was maybe a 5 on the...
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    Theories on Temp Drop Please

    Hi,

    I recently noticed my split system Carrier heat pump seems to be running more than normal this Summer, and after checking the obvious culprits it appears something abnormal may be occurring. ...
  45. Actually that's a fair question. I know it's...

    Actually that's a fair question. I know it's probably black mold because the stuff is all around the houses here in Florida. It could be some form of black oxidation I suppose but unlikely, when...
  46. Soap and water will kill off the black mold in...

    Soap and water will kill off the black mold in between the fins? uh...okay, will do, thanks.
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    Yeah, the Genteq are being made in various places...

    Yeah, the Genteq are being made in various places outside the US from what I've read, including Mexico. That doesn't necessarily make them bad I suppose...but I was guessing the Amrad are probably...
  48. What Would Be Safe to Use on Mini Dehumidifier Coils?

    I've got a little stand-alone dehumidifier and after 2 years it is starting to blow mildew-smelling air. I just took it apart and can see some traces of black mold on the evap coils. What might be...
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    Amrad or Genteq Run Capacitor?

    Any strong recommendation one way or another if I had a choice between an Amrad or Genteq dual round run capacitor?

    Thanks,

    Sonic
  50. Good point on the parts being under...

    Good point on the parts being under warranty...will have to check on that. Still though, not sure if I could get a Carrier dealer to give me the part. I don't mind paying the little amount for a...
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