Why Is This Happening All Over Again?
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- Опубліковано 3 лип 2024
- In this video I return to a call I repaired 5 months ago! #hvacguy #hvac #airconditioning #hvaclife #airconditioner #hvactrainingvideos #hvactroubleshooting #hvactechnician @ruud #txv #skilledtrades #bluecollar #bluecollarpride #aireacondicionado #heatpump #bombadecalor
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I'm a retired electrician and I really enjoy your videos. I miss applying my skills with my brain and hands to get the job done!
You are well organized, patient, well trained and highly knowledgeable and disciplined.
I miss all the challenges that troubleshooting and repair present and finding that almost every job is different.
You are a credit to your industry!
Keep up the good work...I'll be watching! 😄
Thanks
I'm not in the business, but I feel your pain. Getting new parts that are defective seems to be the new normal in a lot of industries these days.
I'm considering shutting down my business because of junk systems and parts anymore. Some of my loyal 20 year customers are getting pissed off at me because of a bunch of issues from junk replacement parts failing soon afterwards..
@@Bryan-Hensley try working on automobiles or lawn equipment or small appliances. You can’t get the parts and when you do, it’s all made in China and doesn’t work, doesn’t fit, or stops working. Gasket set for a small engine went from $12 to $35 now! I took my SS and just doing work for friends and family.
It's a huge problem with car parts. I put a new alternator on my truck and it started smoking. Took it back to the parts store parts guy argued with me and put it on his tester and it smoked up the store.
I do wonder if in this case, it really is two defective txvs in a row.
Could be some contaminate in the system doing it.
@@catfeline1530 No denying that one! Alternators and starters (I suspect) are not re-manufactured anymore, they only replace what is bad. Probably best to find a local repair business if possible.
On rare occasion, wax polymers formulate from the compressor oil and clog the TXV. A light torching of the TXV with low heat (i.e. propane torch, NOT oxy) can melt the wax and dislodge the TXV allowing the foreign particles to circulate and get captured by the dryer. Permanent fix would still be required - replacing TXV with evac/refill of refrigerant. If light torching temporarily fixes the problem, then it justifies an aggressive nitrogen purge to clear coil/lines from existing foreign substances (i.e. wax) as much as possible during repair. If heat doesn't fix the problem - it points more to being just a "bad" TXV without other foreign substances being the root cause.
you could have dryer particles or some type of debri from the first TXV trapped in the coils.. maybe blow the coils out with some nitrogen while you have the system open on the next TXV change out. I wouldn't use line set flush it will get trapped in the coils. I believe the flush instuction say do not flush with coils attached. I only say that because the last company I worked for had major leaks on a LG multi head system with branch boxes on a new install. instead of fixing the leaks they put a ton of leak seal in. then they found out LG was coming out to look at the system so they tryed to flush the leak seal out. I've never seen dark grey vacuum pump oil before. the branch boxes trapped the flush and pretty much ruin that 150,000 dollar system.
I felt so bad for the customer he was getting screwed.
I’m sitting in van waiting for calls to come in thank ya for entertaining me today 👍
I guess it's bad luck Curtis, i look forward to the up coming repair 👍 Au
Hey 👋 Curtis! You will get if figured out and working for this Customer. Glad the TXV is under warranty and great idea to replace the refrigerant. 👍🙏
I find that its more common that the txv power element has lost its charge than blocked screens etc. Good luck.
Happy Fourth of July to you and your family🫡🇺🇸 great video like always have the same situation happened to me last month I had to change out the TX. I just recently changed it six months ago with filter dryer. Also added new refrigerant keep them videos coming great content love all your videos. Stay safe out there.
If you do not need to return the warranty TXV the smart move would be cut it open and see in the needle/seat is contaminated with system debris. If it’s not and appears clean, likely a loss of bulb charge, that could be a manufacturer defect or an installation/vibration root cause. The last thing I would ever do is to replace a TXV with a fixed orifice. That style of metering control has extremely limited operation ranges. Any real load condition changes outside the narrow range will create compressor reliability concerns. TXVs while troublesome offer a much greater range of control and compressor protection.
“Flummoxed” great word.
There are faulty parts right out of the box,many times in my years. 👍
Possible wax from the compressor windings breaking down going through the system I’ve seen it on walk in coolers and it locks the internals of the txv in place just a thought
You know, I been there and done that on Rheem and Armstrong units. TXV and leaking problems. So I have decided not to buy them for my customers anymore because of too many issues going on. I have been an HVAC technician for 17 years now and I can feel your frustration. Those units are pretty sorry coming from manufacturers. 😒 Only units I have no problem with are Goodman and Amana. 👍🏼
Sporlan filters for life
I’ve had the issues resolved by adjusted the txv superheat
Happy 4th of July, Curtis. I hope you and Riley Enjoy some great BBQ. 👍🙏
Great job,Curtis!
TXVs are the bane of my existence. Really looking forward to when everything has them inside and out. /s
Screen on txv
Good video Curtis!
Thanks!
Dang TXV, if you can't change to a piston, maybe you can change it with one that has a removable power head. Just a thought. Good video
I’m thinking I would start with virgin 410a and also add a suction line drier just to make sure that system is clean as possible. Go with a sporlan c-163-s-hh just to keep that system clean as possible. Or go way out there and add a drier with a sight glass to see if you see things in the system.
Put the filter right in front of the txv.
New = Never Ever Worked.
Happy Fourth of July. Like Eric O from the South Main Auto Channel says, "I didn't make it, and I didn't break it." Auto mechanics get defective new parts all the time these days. They say, "If it has wires sticking out of it, get the new one from the dealer." That is because the generic ones usually made in China, often fail after a year or so, if they even work at all.
Did you reuse the original cap tube for the external equalizer. Make sure it isnt plugged up, if it is, the txv will eventually fail shut.
Happy July 4th Curtis and everyone
Years ago, I had an air handler that was doing that. The TXV would stick closed. I could take it off. Check it out. It would check out. I’d put the TXV back on and it would work for a week. Go back out there. it’s closed again after a week. I put on a new TXV and dryer, it worked for a week. I told him we needed evaporator, but I couldn’t get one and he needed to get somebody else. They put a new evaporator in it and quit doing it. I thought I going insane. And just like you I changed the Freon. I did everything. I even changed the compressor because it was under warranty at the time.
Might be time for a suction drier and replace the liguid while at it........Tried those cleaners over the years and they are all worthless. Its very frustrationg!
Good Video ! First You have to Find out if the Txv -
1. Lost its Power head Charge - if so - it's a Easy Fix. Replace Txv & Drier. wire tie capillary to itself to help deter cracking & loss of bulb charge. look for a Rub out on capillary.
2. is Plugged with Debris / Plugged solid. if this is the case - You Must Try to determine what is in it. Cut open txv / disassemble txv & do a autopsie. Most Likely it's Compressor oil or the Compressor Windings coming apart. Whenever i Have a plugged Metering device on anything 5 Tons or Smaller. i Just replace the Compressor , Flush the System & Do a complete Cleanup or Sometimes its Wiser to Just Replace the Unit & is Usually Smarter & is Better than Dumping Good Money into a Old Piece of Junk. if its around 10 years old or Older Replacing the Unit is The Best Move for all involved.
Love your videos!!! And happy 4th!
That happend too me with in 12 months too Curtis.
Happy 4th of July to my neighbours to the south.
Happy late Canada Day.
Well that sucks. Hopefully you get the repair so you can find out what happened. Anyhow happy 4th to you.
The desiccant inside a previous dryer may have "let go" and contaminated the 410A with fine particulates. It's happened with automotive AC, notably with 2010-2012 Ford Escapes. I think your plan is good, replace the TXV and filter/dryer again and go with virgin 410A. Other techs really like the Sporlan Catch-All for these tough situations, might be worth it here.
I'd wager this is the answer. ^
Looks like the sensing bulb lost its charge that's why txv is completely closed on heating and cooling
does the TXV work in both directions?
Yes it does work both directions on heating and cooling
No acid but a pain in the aci d nonetheless! Think you’re on the right track replace the txv refrigerant and add one of those catchall filter driers 😊. Have a Happy 4th tomorrow too 😅. I need to eradicate some brush here tomorrow 😢 Dang string trimmer kills my back 😢
That’s the type of calls that make you doubt yourself.
What type of failure are they restricted or powerless loosing charge..are you cutting the old drier a😢and TXV out of the system or just un sweating the parts. I always cut o7t the drier and bad pa4ts because when you heat up the drier it releases the contaminated in the drier danfoss expansion valves loose the po2er head charge easily seem like if you look at it wrong or let your heat off your torch flame get pointed towards it ,stainless doesn't rust but is more brittle than copper we had high failure rate on danfoss valves a couple times and I always have put sporlan valves in .let us know what value failure is when you diagnosis it
Have been seeing this a lot lately across all manufacturers reminds me of several years back when they had an issue with additives that they were putting in the compressors at the factory. Doesn't always work but every compressor and TXV changeout should get a can of RENEW as well.
I remember this one from the views.
At least you haven’t had to put on your wellies to paddle around like your previous commercial one. Happy 4th July.
Yeah, you needed scuba gear for that last one.
Happy 4th
Compressor could be grinding apart slowly
there is a kit to change to piston,3/8 in and out .with the piston housing.
Happy Independence Day 🎉
Same to you
It could be only filter dryer check the temperature across of it
I think garbage from the first failed txv and dryer contaminated the system.... I would run 2 tanks of nitrogen through it and even put a 2nd dryer between original location and txv to trap particles before the txv
how about a removable pre filter ???
there has to be trash in the condenser metering device,what do you guys think?
BTW, Happy 4th of July to everyone.
would it be worth blasting/clearing the line set?
Have the same issue with txv's day after it was replaced
🇺🇸 Happy 4th of July to you all from Canada 🇨🇦
Happy late Canada Day.
Did you put in new refrigerant 4 months ago?
No
try a can of ac renew iv had about a 50/50 success rate with it ,that thing is of the age they put corrosion inhibiters in the coil at manufacture , wrap the txv with a wet rag to try and not deform the body when brazing best of luck on the repair . thanks for showing the good and bad
dryer is breaking lose dumping into the txv bubba
Is it possible for moisture in the system to freeze clog the TXV? And all it really needs is evacuation?
I had to work all of 4/7. But that's normal outside USA.
What year is the unit. Happy 4th.
You need a little folding stool so you don't have to sit on the wet or dirty floor.
Rheem baby
I know you braze with nitrogen, so not soot; any possibility of a burr or other metal fragment getting into it? I'll bet you'd make a lot of money if you invented a self-cleaning TXV!
TRY USING A DIFFERENT BRAND OR MFG ONE THAT HAS A REMOVABLE HEAD AND FLUSH SYSTEM OUT REALLY GOOD I WOULD ALSO CHANGE OUT EVAPORATION COIL IT PROBABLY CONTAMINATED AND VIRGIN A410 good luck
fwiw we’ve had major issues with indoor txv’s failing at initial install/startup or after a few months of operation with some fist co units we’ve been installing at a project .. some are faulty at start up and some fail after a few months.. we are considering using aftermarket sporlan build your own type txv’s if the problem persists..
Just pour some hot water on it and see if it opens up you could hear it opening up we used to open txt and clean it with 99% alcohol and put it back in used to work for a while and then it’s up to you
also looks like drainage pipe is up not down 😮
5:32 you probably didn't have it on long enough.
The the screen could be clogged for txv. Seen that a couple times and the txv was not the problem. It was restricted in the screen. Blow the heck out of it with nitro both ways when you remove the txv.
That’s a lot of work getting all your equipment on the roof to do the job. I did one last month changing a compressor only to find out it had a high side restriction. 32 year old ROOF TOP. I Ended up replacing with a new Rheem 10 ton unit.
Happy 4th Curtis and to everyone!
Bad out of the box parts?
What's the txv
It’s in the compressor oil
Happy 4th of July! Fireworks 🎇 Great video. Anxious to see the follow up one.
So, what about your generator?
Taking that one back
@@HVACGUY thanks for the reply.
If it’s tripping out on LP in both modes, doesn’t it bypass the main TXV in heating mode? Does it have 2 x txv and check valves or different to that for heating? Great video again.
Just one txv that meters in both directions
@@HVACGUY that’s a new one on me. 👍
I am not an HVAC tech, so take what I say with a grain of salt. To me it sounds like debris got into the system at some point and the TXV valve is getting clogged. As to where that debris came from, other than a degrading dryer filter, I would have no idea.
Could the compressor be failing and putting debris in the system
Happy fourth of July Curtis
You have 2 metering devices.
Nope, just one that meters both ways
@@HVACGUY I cant see all the piping on that one,but for HP you should have another ,besides that txv.
Hi bro
I'm going to give you some advice that might save your life or at least keep you out of the ER. When climbing a ladder ALWAYS have a three point hold on the ladder, that is to say at least three parts of your body feet or hands should be on the rungs, never carry a tool bag while climbing. To climb properly and safely buy some 3/8" nylon rope, cut it to 10' longer than the maximum height of your ladder or ladders and install a latch-hook on the lower end. When you go to climb loop the latch end to what ever you wish to take up then take the plain end and loop it through the rear of your belt, leave about a foot of it below your belt, do not tie it off to your belt. Once you are safely on the roof remove the rope from your belt and tie it off to your ladder, then pull up what ever you need to the roof. If you need more equipment on the roof drop the line back down climb down and latch the equipment to be pulled up. Always keep your hands free to ALWAYS climb with a three point hold, your life depends on staying safe while climbing aloft. Always remember, "No job is so important and no service is so urgent-that we cannot take time to perform our work safely"
I think the compressor is sheering off and clogging TXV.
Also could be a reversing valve issue.
Flush with RX-11 or whatever is used these days?
I'm sure when you changed the 1st txv you blew Nitrogen thru the entire system to clear the system. Maybe over time debris got loose and found the txv. Most manufacturers won't warranty a unit put in a hair or nail salon due to the chemical compounds they use. If heat pump evap coil will not be covered. Been there done that. It could be product broke or malfunctioned.
Are the acid tests reusable?
Sorta
In a bind you can use the tip of your tongue on a refr. valve cap! It works. lol
@@bobboscarato1313 lol, that would be one hell of a pinch :)
@@HVACGUY Lol k.
Can someone link to the original video as I can't find it
It’s funny you mentioned piston. I was just saying the same thing. I wonder if you could put a piston in that. Probably not.
don't get the same brand try an other brand
Which brand? I’m listening?
Maybe they (all manufacturers) should put in some shut off valves on both sides of any TXV so that they can be changed out quickly and easily.....without pulling the entire charge.
You mean like flare nuts? Then you may have refrigerant leaks there.
Stay residential. Good luck.
Commercial generates more money most all the time!
@bobboscarato1313 I agree on the commercial work. I have done a lot of it in the past. But if you're a hurry and get done in a short time fore get it. I have spent days even in nasty weather on the same job . Have a great day 😊.