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Well I had another technician defrost the coils and he noticed that one evaporator coil was not cooling, lets figure out why.
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02:00 PUMP DOWN EXPLANATION
03:46 TXV SIZING FOR AWEF EQUIPMENT
06:11 TXV INSTALL
12:58 EVACUATION TIME
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18:18 CLOSING WORDS

45 thoughts on “Why is the walk in cooler so warm?”
  1. Avataaar/Circle Created with python_avatars Toby Overton says:

    I’m incredibly confused as to why your LLT is in the 50’s…

  2. Avataaar/Circle Created with python_avatars slashmaster2 says:

    Hey HVACR, ever get calls to repair vandalism? They came and kept dropping big rocks on the unit. Thankfully no leaks this time, just had to bend the fan guard back and it ran again. How often do you get called to fix vandalism? Service area Orleans??

  3. Avataaar/Circle Created with python_avatars John Walker says:

    Great job Chris.

  4. Avataaar/Circle Created with python_avatars Watch Videos says:

    Is reaming your pipe after cuts a thing or no ?? Service area Barrhaven??

  5. Avataaar/Circle Created with python_avatars kd9bwi says:

    I don't know what it is, but Rheem has been VERY bad lately for txv failures a year after a proper install. We've never had an issue with ADP (Carrier) coils though. Just a few days ago I condemned a txv at my second job, although that one is a 10-year-old TRANE system.

  6. Avataaar/Circle Created with python_avatars Joseph Morgan says:

    Out of curiosity… I've been taking power head off and wet rag to cool the rest. Is this a bad idea? If you're building the valve, I tend to just leave it off.
    Am I not doing this correctly?

    Also did you replace the cartridge? I always have a hard time getting the old one out when I unsweat. I started using the 1/16 part of my sledge just to open it up a hair.
    Looking for better ideas

  7. Avataaar/Circle Created with python_avatars Sam Almo says:

    Great video, is there part number for the sporlan build a TXV kit you used in this episode? I do light commercial restaurant refrigeration and HVAC (less than 15 tons) – Looking at Sporlan Bulletin 122, on page 21 of the PDF, which kits do you keep in stock on your van? Does it come with that case you have it in?

  8. Avataaar/Circle Created with python_avatars Dustin Montgomery says:

    I never seen a TXV replaced, and I really enjoyed watching the process.

  9. Avataaar/Circle Created with python_avatars Arthur Hartwick says:

    You didn't wet rag the solenoid valve. Is that OK?

  10. Avataaar/Circle Created with python_avatars Steph&Waylon Wells says:

    👍

  11. Avataaar/Circle Created with python_avatars Hossein khalilian says:

    welding does not very well

  12. Avataaar/Circle Created with python_avatars Garrett says:

    i like to cut the cap tube on the power head first. tons of pressure on cap tube the valve is bad and since its all getting replaced no harm. Or cut the cap tube and little to no pressure and its easy to say it was only the power head and you just saved yourself time and the customer money, Ive already diagnosed the bad valve so its either going to need the whole valve or just the power head.

  13. Avataaar/Circle Created with python_avatars Sound Of Resistance says:

    Nice work. 👍🏻 Are you in Orleans ?

  14. Avataaar/Circle Created with python_avatars AV says:

    Quick question for an apprentice, Can you change a strainer while the system is pressurized or must you pump it down prior, Thanks

  15. Avataaar/Circle Created with python_avatars Ralph Woodard says:

    Enjoy watching your videos. I also think you’re using far too much solder on those joints. Would like to see you apply the solder to the backside opposite of the flame. I think you have a far cleaner and good joint.

  16. Avataaar/Circle Created with python_avatars Chad says:

    Why is there 3 tubes on that txv?

  17. Avataaar/Circle Created with python_avatars KEVIN YOUNG says:

    @hvacr what numbers do you use on ur oxygen and acetylene regulators.

  18. Avataaar/Circle Created with python_avatars ThatGuyFromNZ says:

    If there isn't one already, an App where you can look up the system you're working on and then symptoms/error codes where the App then brings up guides and/or videos on how to diagnose or repair the problem would be excellent. Something similar to what DiagnoseDan has done with his app for diagnosing and repairing vehicle electrical problems, I could see you doing it with all your knowledge mixed with someone who can write an App.

  19. Avataaar/Circle Created with python_avatars Tony Sgrazzutti says:

    Why didn't you seal all the leaks, evacuate the refrigerant, pull a perfect vacuum, and recharge the system when you know there are pieces of carbon and other big contaminants in the system? Is it because on older systems you will never be able to fix all of the leaks anyways? I am going to HVACR school at Ferris State University right now and it's really helpful to see how everything works in the field. I can say with utmost certainty that he is a good tech.

  20. Avataaar/Circle Created with python_avatars Kenneth Landis says:

    I sent this to a maintenance manager to show him the tear down of the TXV. Good shit man. Service area Ottawa??

  21. Avataaar/Circle Created with python_avatars LazyLife IFreak says:

    Remember to do preventive maintenance on your computer. My GPU was at thermal throttle 83c and after a repasting its now 61c (gtc 1060 6gig in TWW2) Are you in Kanata ?

  22. Avataaar/Circle Created with python_avatars W D says:

    If I am swapping out a txv I am using stay brite 8 and will be done in 10 second's.

  23. Avataaar/Circle Created with python_avatars Andreas Tsimas says:

    In all plumbing videos the say "Use flux, everytime!" Care / can someone explain me why it isn't needed in this case?

  24. Avataaar/Circle Created with python_avatars adam holland says:

    So it sounds like the TXV is like a carbeurator on a vehicle. that makes it make more sense as to how it works.

  25. Avataaar/Circle Created with python_avatars Mr Green says:

    Would it be unprofessional to change the the solenoid as well?

  26. Avataaar/Circle Created with python_avatars Lasse Huhtala says:

    Manufacturers thinking about service. Heh heh. Right. I've worked (albeit not HVAC-units) where the thing that always breaks, is in the middle of everything, and you have to basically tear everything down around it, and instead of a 1 hour job, it turns to a 8+ hour job. But who knows what the right-to-repair movement can accomplish? Are you in Barrhaven ?

  27. Avataaar/Circle Created with python_avatars shango066 says:

    They fail in Honda vehicles all the time. Same thing they just close down and require 3 hours to change

  28. Avataaar/Circle Created with python_avatars keith watkins says:

    you way are to over active with the torch mate

  29. Avataaar/Circle Created with python_avatars Travis Lunney says:

    Found 2 TXVs with failed power heads this month. One rubbed out, the other completely snapped off. Typical symptom on AC is LOW pressure and HIGH pressure at the same time. Stacking refrigerant in the liquid line / condenser but compressor suction is low. If you ever get a low pressure fault on an AC with a TXV, check your high side AND liquid line pressure before pumping nitrogen in checking for leaks!

  30. Avataaar/Circle Created with python_avatars The Project says:

    What, no retro 80's synthwave for the braising montage? Are you in Nepean ?

  31. Avataaar/Circle Created with python_avatars tankgunner32 says:

    What’s the brand of regulator on your nitro tank?

  32. Avataaar/Circle Created with python_avatars LaskaHVAC says:

    If a piece of your OCD HVACR soul died a little bit when Chris didn't de-burr the equalization line after he cut it, leave a like on the video. Good diagnosis bud!

  33. Avataaar/Circle Created with python_avatars Godfrey Poon says:

    Careful! There are clearly several cases of corona in there!

  34. Avataaar/Circle Created with python_avatars shine says:

    Govt wants to cut the electricity consumption in refrigeration but they want everyone to drive electric vehicles

  35. Avataaar/Circle Created with python_avatars shine says:

    👍💪❄️🇺🇸 Nice vid n information. Was that 15% rod u used ?

  36. Avataaar/Circle Created with python_avatars Fleur de lune says:

    ❤️

  37. Avataaar/Circle Created with python_avatars Stolen ElectionFJB says:

    I repair cnc machines for a well-known aerospace company. I get to work on some super badass machines every day. I jump on all of your videos. Your knowledge, skill set, level/method of teaching, and most of all your all-rounded ethics. Dam you're badass

  38. Avataaar/Circle Created with python_avatars Juan Antonio G says:

    👍👍👍👍👍👍👍👍

  39. Avataaar/Circle Created with python_avatars Mike C. says:

    Good vid. I don't have many txv failures, but when I do, I always seem to have several in a very short period of time. Then no more failures for a year or so. I find failures of some parts seem to happen in clusters.

  40. Avataaar/Circle Created with python_avatars hayjamawas says:

    Problem is. That is a Sporlan valve. It’s the new HX valve made in Mexico. It’s the new hotness. We are starting to build more and more of these at my plant. Lots of customers are starting to switch over to these txv’s

  41. Avataaar/Circle Created with python_avatars James Leinen says:

    You mentioned you didn't see how the other coil was frosted up. It might be a good idea to have your techs take pictures, if they can to document things. Just a suggestion….