THE OFFICE AC IS NOT COOLING
Vložit
- čas přidán 28. 07. 2024
- So this one gave me a run for my money, I thought I had it figured out than the AC decided to school me.
NEW HVACR TOOLS CHANNEL- / @hvacrtools
HVACR VIDEOS NEW MERCH WEBSITE - www.hvacrvideos.com
Please consider supporting my channel by
Becoming a Patreon member - Patreon / hvacrvideos
Becoming a CZcams channel member / @hvacrvideos
By purchasing tools via my affiliate links below at TRUTECHTOOLS.COM and use the offer code BIGPICTURE to save 8% on your total purchase (exclusions apply)
Visiting my website and purchasing merch www.hvacrvideos.com
HVAC OVERTIME CHANNEL LINK - / hvacovertime
TOOL LINKS
Viper hand pump sprayer - www.trutechtools.com/viper-2-...
JB nitrogen purging adapter- amzn.to/3iwzaxc
Ratchet tubing bender- www.trutechtools.com/BlackMax...
Fieldpiece wireless scale www.trutechtools.com/SRS3?aff...
Fieldpiece SC480 meter www.trutechtools.com/Fieldpie...
Fieldpiece JobLink wireless probes www.trutechtools.com/JL3KH6?a...
Sman 480 digital manifold www.trutechtools.com/Fieldpie...
Fieldpiece MR45 recovery machine www.trutechtools.com/Fieldpie...
Fieldpiece VP85 vacuum pump- www.trutechtools.com/Fieldpie...
Wireless probes charging tee - www.trutechtools.com/AVT45?af...
Samsung 8" Tablet amzn.to/3bW8QJ6
OtterBox case amzn.to/2wgd0M5
Bomber safety glasses - amzn.to/2yD6sbs
Bomber safety sunglasses- amzn.to/2zmhdPp
BlueVac Pro micron gauge - www.trutechtools.com/BluvacPr...
TruBlu pro evacuation kit - www.trutechtools.com/Accutool...
Accutools core removal tools - www.trutechtools.com/Accutool...
Nitrogen purging regulator - www.trutechtools.com/Western-...
Nylog blue - www.trutechtools.com/RT201B?a...
Flir One Pro thermal imaging camera www.trutechtools.com/FLIR-One...
Viper coil gun- www.trutechtools.com/Refriger...
Viper Condenser coil cleaner Venom Pack- www.trutechtools.com/Viper-Ve...
For Optimizing my videos I use Tube Buddy
www.tubebuddy.com/HVACRVIDEOS
Please consider subscribing to my channel and turning on the notification bell by clicking this link goo.gl/H4Nvob
Social Media
Facebook / hvacr-videos. .
Instagram / hvacrvideos
For any inquiries please contact me at chris@hvacrvideos.com
Mailing Address
HVACR VIDEOS
12523 LIMONITE AVE.
440 - 184
MIRA LOMA, CA. 91752
00:00 TEASER
00:03 SPONSOR CARD
00:09 VIDEO START
00:35 I'M HIRING
02:01 BASIC TROUBLESHOOTING
03:23 BIG PICTURE FIND
05:17 CONTROL WIRE INVESTIGATION
05:37 WTF MOMENT #1
09:02 MY BAD
09:28 WTF MOMENT #2
11:43 I'M BACK
15:19 COIL CLEANING TIME
19:54 CLSOING WORDS
Last week > “Somebody left a panel off and a drill up here on the roof. Was that one of my techs? Maybe....”
This week > “OK guys, I’m hiring again....” 😂
"It's just temporary"
Me, as a programmer: *sweating profusely*
Nothing more permanent than a temporary solution
@@colinstu My school was temporary for about 20 years. Then they found mould in some parts (i was in the one of the last class to graduate).
Now its some what renovated and is a business hotel/storage for small businesses
It's temporary until it's permanent. Ask City Hall.
@@fulf whose funding for replacement ends up in the general expenses coffer.
Boy if I lived in Cali my resume would be on your desk lol
Please don’t call opens "shorts". It just furthers the public’s ignorance of the electricals. But I really like how you take the time to make the wiring right! A real pleasure to watch.
Never forget the big picture diagnosis! Just because you find the thermostat issue doesn't mean there aren't others. This is a great video.. thanks for including your mistake since it helps us all to learn.
I have absolutely no idea how I stumbled upon your videos. But man am I glad I did. You are such a genuine sympathetic nice guy - and I don't know a lot about what's happening since I am a service technician for laser machines in tire and glass industry - and I just love watching it. Keep it up!
Greetings from Germany btw :)
Sind richtig gute Videos, ich schaue ihn auch schon ne Weile :D
seeing sub-par work every damn day makes me appreciate your attention to detail. I'm a plumber and your wiring made me happy. Nice neat and organized. 👍
I can't fault you for looking into the stat/stat wiring. The symptoms presented certainly lead in that direction - it looked to me like a minor short somewhere that was bleeding off the voltage without tripping a breaker or popping a fuse. Sure, you went down the rabbit hole for a bit, but it's probably the most common cause of the symptoms you saw.
Kudos to you for, again, being honest with the client, and for also coaxing that unit back to life. Amazing that it was operating pretty close to optimal considering its age and condition when you arrived! The electrical hobbyist in me thanks you for cleaning up the feed wires; those wire nuts and extended wiring had the potential to become an issue in the future. Those cracked wire nuts could break leaving a short/shock risk, and the connections themselves can develop corrosion that becomes a resistive (and hot) load or even eat through the copper completely and exhibit itself as a "lost leg." I'm glad you pointed out that some of the holes the wiring is routed through has beveled edges for that exact purpose, it's a tiny detail I imagine gets overlooked by other techs.
Big Picture Diagnosis, Proactive Service Methods.
I thoroughly enjoy your Utube offerings.
After 40 years in the trade I can watch and diagnose, after the problem is solved I don't have to gather up any tools.>:^)
Thanks Chris you are a good man for not wanting to rip the customer off . Great video
When you tested it gave 24v at the unit to the controller. The start delay was timing and it started compressor/fan . Then the fan then went out on O/L which cut the power to the controller and stopped the unit .When it suddenly turned on you should have checked the 24v again at the unit and when it stopped you definitely should have checked for 24v from the unit to the controller. That loss of 24v would have shown you the problem was at the unit. . However you were distracted by the wirenuts cracked and never retested. You (from the video) just went downstairs. I assume the controller was fine which would prove (or maybe not?) my diagnosis ..That's 2 cents etc.
Shoulda, coulda, woulda - He still found the right solution to the problem, without a backseat diagnostician
@@scottamu7816 what part of "Wow, was I way off on this diagnosis." slipped between your ears without anywhere sticking, me-lad?
I really enjoy how you show your complete troubleshooting. Like you just said on a previous video, you show everything... The good and the bad. I always try and learn from my mistakes and when I’m watching your videos when you have a mis-diagnosis I learn with you, if that makes sense.
That blower overload wiring got me one time when I first started in the trade. I replaced the main board and the unit still would do nothing. I found the red overload wire was broken in the blower cabinet after like 4 hours lol 😆 😅
The diagnose of the lack of power on the thermostat was right. Only the cause was diffrent as you thougt. So it was right to the point you found the desintigrated blower. The cabeling of those units are allways a shock for a German technician :D
I wish there were more guys around like you, Steve Lav and that soft spoken Ted from anti DYI Hvac . Three honest Heating and A/C guys I enjoy watching you guys work
Just started hvac work 2 months ago, finished school 3 months ago, but not in California
I'll take it! A few caveats: I'm no good before 11am. I have a tendency to steal office supplies. I don't work well with people. I don't work well alone. I hate the outdoors. I can't work in heat. I hate indoors. I cannot climb higher than 3 feet. I can't work in the cold. I don't have a driver's license so you'd have to pay for Uber. Ok technically I do have a driver's license, I'm just prohibited from driving by the court. I'm a people person.
40 years of experience, but I'd never live in California...and retiring soon, lol
The same could be said for a lot of other Parts of the Country. Different Strokes for Different Folks.
@@Gcanno move to Cali, be a different folk, yet still have the same Stroke.
for such an Bad Unit running that good again after Your Work, i can only say Respect !
I left two big name service companies in my area because of work ethics...ie. selling/replacing items that weren't necessary.
I understand with changing technology that there is a time and place for upgrading but I can't sleep at night having and employer tell me that I am not selling enough new equipment while out doing service calls
Really good vid with good morals 👍👍
Now these are the videos that keep me watching and learning from you . I don’t do A/C work but your diagnosis of the wiring and electrical is really helpful for my trade. Thanks man.
Those of us in the business of troubleshooting have been there in diagnosing something. You have to pick a direction to go and sometimes you pick the wrong way first. But you caught it quick and figured it out. I think it's pretty awesome that these units have wiring diagrams on them, coming from the automotive side. I just need to understand a/c power. I'm struggling a little because I've never been to school for it unlike autos. I got DC volts down good so at least half the battle is won! Thx for the great learning experience.
One of those "Well there's your problem" calls even though it took some extra time to find it. Great video Chris.
Lol, I loved the intro clip. We all have those days... keep up the great vids!
it's very good to hear good ideas
I wish I was younger and lived near you. Because I would love to work for you even though I know very little about HVAC. But I would love to learn under you Chris!!
Great work thanks for sharing this with us take care
I just came across your channel and have watched 2 of your videos and liked what I have seen so I subscribed. I was a commercial service tech from 1992-2019 and like to see how other techs do their thing and you do it very well. I think the only thing I would have done different at the start is I would have taken off both panels from the jump....but that's just me....lol.
Disconnect 24v r and c and wit nut at unit and then go to thermostat and use meter and test continuity. Best way to tell if you have a broken wire.
I just had one of these exact 👌🏽 😂 but on a Trane. I just tell our guys to glance over everything to be safe.
Been there, done that, got the t-shirt. 👍🏻😉
I enjoy your videos.... mostly because I like your diagnostic process. I know little about HVAC, but more about electronics. A choice to isolate the thermostat cable issue would be to lift the red/yellow pair and connect them to say a 6v lantern battery, the check voltage at the thermostat. Maybe easier, lift them and jump together then test with continuity or ohmmeter at the thermostat.
Side story, I recently had my upstairs HVAC replaced. (residential) They installed a new system, and on the main downstairs they replaced the furnace. The weather was cold then (post Texas ice storm). Within 2 weeks the weather turned warm (I did say Texas), no AC downstairs. They were checking thermostat cable voltages and thought there was a cable break. Nope, the original owner apparently didn't like the thermostat location and had it changed. When they connected the cable to the condenser they used the cable from the original thermostat. No charge of course, but I am sure the crew that did the install was mocked when the second crew got back to the shop.
Another great vid!! Thanks for great content! Btw only info I can give us it’s a Open wire if no voltage and circuit is open. Not a short. But we still knew what you meant!!
I’ve seen you work on that same unit for the past 2-3 years by the looks at the same Restraunt. Seems to be a problem child RTU.
Nice job and video like always
Live and learn ... Good vid Chris ...
This reminds me of going to work with my dad on hvac
A job well done . I haven’t seen a blower wheel disintegrate like that .
Maybe the t stat was doing a cooling delay after being reset each time?
I would have never thought that the blower motor was obliterated! must have been the middle of the night or someone would have thought the world was ending!
Very nice clean up
Props on the not selling unneeded parts👍. When I worked on gas pumps there was a guy who worked with us who was replacing unneeded parts to make his profit margin look better so he could get a pay raise. Then a district manager noticed how when this guy worked on any store the bills were always higher, so they set a trap for him & caught him replacing parts that were fine. They told our owner either he gets fired or you loose all our business, dude was looking for a new job that day. It always comes back around eventually.
Great video, thanks. Can you do a video on the wiring of these type of units and how to bypass the thermostat on the roof. Something for newbies where you do not assume any previous wiring experience of these units. . Thank you.
Is it weird that I can remember your work locations based on exhaust fan noises? 😁Nice job BTW.
wow damn did the blower wheel run at 12,000 RPM or something? 😲 that was kinda insane
VTEC kicked in
Great video man
18:13 Should've said "I don't wanna try to reinvent the blower wheel"
Great video
Awesome video!
you can actually get a fairly heathy sheen when polishing turds. it certainly smells, but it’s shiny!
That blower wheel kind of looks like what would happen if it had melted.
Sometimes I wonder if the customer can hear you talking when you're near the ductwork connections, and what if anything they think of it...
"Wow, was I way off on this diagnosis". If that isn't a hook bait intro for people who like to troubleshoot, I don't know what is.
10:15 - I reckon the reason you had voltage initially then not downstairs is the same reason it started up for a very short period - the overload simply tripped off during the tests. Intermittent faults are the worst ones to diagnose eh!
The wiring on these AC units should be illegal.
Absolutely!! I was an electrician for over 30 years and you are correct!!
also: the wiring IN these AC-units
Roger Foster I’ve also had electricians putting single pole breakers and run the wrong size wire in ac systems all the time so I take every electricians advice about hvac with a grain of salt at least about hvac equipment.
It is. But so are most the employees, the business "accounting", food prep, the questionable financial backing/source, and on and on. Not to mention the tent city out front and out back, the constant brush fires nearby, the severe drought, and the rapidly deteriorating infrastructure systems struggling to supply water, power, and roads.
Welcome to So Cal... where deadly wiring is the least of your problems.
the way you hold the multimeter.. i think you are pro in using chopsticks. :)
Xue Hua Piao Piao Bei Feng Xiao Xiao?
Finally saw something wrecked in your channel. I mean the indoor blower.
I live in California I’m 22 I come from residential background. Got hired at my current job as a refrigeration service tech been here 4 months and Mann it’s a chalked I would pay top dollar for any online classes
Never seen 24v ran through the blower motor overload or at least haven't ran into that issue where I discovered that was a thing. The new ecoblue Units break r to the board with the blower limit which was manual reset. Replaced a lot of those with auto resets carrier is now making them with auto resets (the blower off delay in heat is too short and not adjustable).
I've been bamboozled like this before, cept I replaced a board that wasn't bad. TLDR, the tstat was set to gas heat, instead of electric. So it was flipped in heat, and the blower didn't kick on. The new 5 ton carriers hide the airflow switch, and I had 24v present at the board, but not going out. So i presumed the board was bad. Even after skimming the wiring diagram. Well turns out they forgot to add the airflow switch into the 24v main line going from the transformer into the switch. Bc when I installed the new board, and still nothing worked, I then found the airflow switch, saw a red button, pressed it, and it worked. I was livid lol. Good vid bro
Yikes! I have never seen that type of blower fail like that. I can’t imagine that’s a common occurrence.
That happens more then you think
Wish I lived in the area, would love to work for you my man🤙
btw in a pinch you if wire(s) are energized with ac you can use a non-contact voltage detector to find a break (iv'e atleast tried this with 120)
I have it straight from a former Carrier service manager. Carrier is a bunch of cheap bastards who literally leave one winding energized so inexperienced techs fry compressors with their vacuum pumps. You get to save $0.02 per contactor AND you might sell a compressor! He also no longer works for Carrier because, at a finance meeting, they were talking about how failure rates were low but replacement part income was high (because their markup is absolutely absurd) and he questioned it, especially in their residential market. ECM inducer motors should not cost $500-$700 to the end user. They told him he just doesn't understand finance and he replied with, "Oh, I understand finance. I also understand rape and sodomy." Needless to say, he no longer works for Carrier.
Carrier build quality is barely above Goodman and you will never convince me that Carrier is a better choice than any of the other big ones - York, Lennox, Trane. I despise Carrier. They don't even have tech support anymore. It's all handled by the distributors. Carrier can't even design a blower assembly that doesn't flex worse than a wet noodle, replacement pulleys are plastic, and the heat exchanger access panel, and the metal behind it, is the thickness of paper and strips out as fast as a Goodman. Also, their condensers are all split coils and the unit lids buckle incredibly easy if you don't remove the condenser fans first, even with two guys. The unit you are working on has a buckled lid to prove it! I hate Carrier.
Cleaning the heater, heat exchanger takes more time than a nube like me would think because it involves the removal and installation of gas piping, regulators etc. All of which takes time! Then I add does the client actually use heat, well there you go!
I'm a curious person by nature. So If I had a work space or garage I would love it if I could of gotten an old unit like this just for the sake of studying it and maybe even studying it's design strength and weakness to see how I could re-work a unit and give it a second life. I'm in the tech field. I know and often do give computers a second life and study how to make it's thermals better and give it better performance. But generally speaking anything that involves learning and challenging me to make it better would entertain me for hours on end.
My thing is I always take the t-stat out of the equation with jumpers especially on a roof?🤔
Nice clean up tho!!!
Stay safe.
Retired(werk'n) keyboard super tech.
Wear your safety glasses.
Nice video
3:34 - not only the nuts but also the wiring has been "aged".
4:34 - Even tapered holes will over time wear the wiring if it just moves a little forth and back, especially in aggressive environments with a lot of dust.
Some overload protections are bimetal and can toggle on/off over time much like classic car blinker relays and it just happened to be on when you were checking the voltage and then went off again on overload. A bit tricky to figure those ones out if there aren't any kind of alarm indications.
I live in Palmdale and have a 1 and 1/2 experience let me know if you need me love the videos
If I was willing to live in Ca I'd be down to work there.
“I probably should’ve thought more” if that’s not the story of my life…. I think I’ll remember that one.
I bet that blower was making some crazy loud noises before it totally locked up. I'm surprised it didn't bend up the cabinet.
I wonder if you were getting 0V at the stat, then by the time you tested the unit, the overload reset, but the stat was in a timed lockout. Then it fired up, tripped the overload, rinse and repeat.
The reason why you had the voltage up top but when you got to the thermostat it had been long enough to go off on overload.
ha ha lol I asked a repair guy one time " How Do You Sleep at Night Charging That kind of Money" He Smiled at me and said " With a Brand New Pillow" I had nothing lol
Voltage at the unit an no voltage at T stat?? I would of assumed same as you we got a broken wire..An I wouldn't of ran the new T Stat wire an been WHAT?? An then troubleshooting further so that was an excellent catch!!
Ive been totally bamboozled by this style off carrier, you really don't expect your control voltage issues to stem from the blower motor
We've got a Carrier RTU that likes to intermittently pop the built-in 5A circuit breaker on the 480/24v control transformer, and now I'm thinking maybe the old blower motor could be the culprit? Our service company already replaced contactors and economizer module with no change...
@@scottamu7816 There's a wire rubbed out somewhere. It could be in the motor, probably a wire going to the economizer though. Get a better service company.
The wires still "rub" on metal from the unit vibrations. Its still not acceptable IMO but if you dont have an issue with it np. I said my peace, no more hassling about it from me
you dont have to change out the tstat wire just use one of the extra wires if you have any on the 18/8 stat wire. it will save you alot of work
Shoot I've had to use the line set as common before. On a split system not RTU tho.
Just food for thought
Instead of marking wires just cut an inch back and leave a bit of wire. Good job
Freaking beautiful!!!
Ghost Voltage, happens on vehicle electrics all the time, the meter shows that Voltage is existant, but when you connect a probe lamp or a load on it the Voltage dissapears...
Ok Ok ....I Was Going To Take A Summer Off From HVAC/R Work...But After Watching This, Im Going Crazy Not Being On A Roof Top....(I always Open All Panels...Look Where The Problem Isnt..)...Michigan Tech Wisdom...🤪🤪🤪
Seen the same thing on 2 of those units.
Use a level when you are replacing the motor and assembly. Makes belt issues easier
On the thermostat wiring. Replace the y for any other wiring on that thermostat wire their not using. Quickest solution for me. What you think?
There is a difference between a short and an intermittent connection. I suspect in the time it took you to get downstairs, the circuit just opened up again.
You can use a TDR (Time Domain Reflectometer) to find the distance to shorts and opens in cables. Telecom uses them all the time. No reason you can't use it on a thermostat wire.
I feel like it was pressure switches that threw you off... said it to my work partner at 3 mins into so
Chris is cleaning up one turd of a package unit at a time.
Damn....I live local but I know this is not the type of work for me even though I love these videos.
If the unit remained working properly, forget about the rest. Good job
I really do wonder what you do with all these old motors and such
retired now but i works for 40 y in the trade never underestimate how things can bite you in the ass
@20:47, When you were diagnosing the wire issue, did you measure the voltage at the thermostat? You might have seen a low voltage condition instead of a no voltage connection.
talking about saving money,i think you should have tested the motor the switch protects the motor.the customer would appreciate giving it a chance.
this the one you were talking about on the livestream the other day?
10:01 I was like WTF OMFG what happened to this blower a bomb attack ?!
Should've told the manager he can pay for a new thermostat and the labor to reinstall the old one when or if they leave.