THE MAIN BREAKER IS TRIPPED AND THE AC IS NOT WORKING
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- čas přidán 20. 03. 2024
- It is so important to let your customers know not to try and reset a main breaker if it trips, call a tech right away.
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I love how when you're explaining things and then suddenly... "Oh, look, duct detector...oil!" Cracked me up.
This video is brought to you by Sporlan. Quality, integrity, and tradition.
Hey look a statement i dislike. But not because of Sporlan.
Tradition is something you should never state, as i have time and time again seen companies with a tradition of cheating the customer, delivering bad work and lying..
And no Integrity doesn't cover it, as the morals, conduct or ethics of that company might not be the same as yours.
So i rather see: Quality Integrity Honesty
@@Eledore Even lying and cheating have tradition.
@@EledoreI like how “tradition” is something we should never state….but pay ZERO ATTENTION to the fact that your slow brain used lower case “i”. My dude…..if you’re gonna be a “tradition” Nazi, I’ll be your grammar Nazi. Ya Heeb 😅
Ok, I dont dislike the advice, it clearly rings out to ground. Tradition is becoming a scary word, fair to say maybe becoming more negative than positive. I would ask that you just be careful not to scare the sponsors. That would make his life harder. CZcams is getting kinda shaky lately, and I know you didnt mean this sponsor.
We need our HVAC fix.
Atleast they're better then the ek driers that have all those little balls inside them. Talk about messing a system up if they come apart. Even have done r11 flush on one that's happened and still have not been able to get rid on internal issues because of them. Stay away from ek driers.
I mean, you're enough of an expert to look into the reasons why things happen the way they do. That's good enough for me.
That evolves from a drive to do the job right. Unfortunately you do have to watch many others do the job wrong to spool that up. Can be bittersweet when you just cant save someone from not listening to you genuinely trying to help them. Double so when they lash out at you for being right. At the end of the day, the goal is for getting people running and everyone going home safe.
Great explanation of what a circuit breaker does. So many people have this idea that the breaker is to protect you/them. A standard breaker couldn't care less if the power is going through something plugged/wired in or you so long as the current isn't above its rating. It will let you get electrocuted all day long. It's there to protect against overcurrent that could cause a fire or other hazard. GFCIs are meant to protect you, and some breakers do have those built-in, but a standard breaker ONLY protects the wiring and ONLY looks for overcurrent.
It doesn't even protect appliance cords. If the fault is in the appliance or its cord, and the cord isn't sized to handle the full fault current required to trip the breaker, too bad.
Last week, we had two separate electricity fluctuations at the donut shop due to high winds and tree branches. Both times the power flickered, I needed to reset 6-10 breakers to restore power to 110v and 208v equipment. One circuit had barely 2 Amps of load (wireless headset system) on a 15-Amp breaker, another circuit had about 4 Amps of load on a 15-Amp breaker, etc. Over a million bucks spent on "renovations," and the worn-out 1990s breakers are still in the panel. (EDIT: Most of the breakers don't "click" on or off, they have very "mushy" operation that is more than a bit concerning.)
If our 208v espresso machine starts working, you can hear the 480v microwave convection ovens' internal fans slow down. If the microwave convection ovens are cooking something, all the LED lighting overhead starts flickering. At this point, I'm simply waiting for the place to burn to the ground so I can stand there with a smug grin and say, "Maybe next time you'll listen to me?"
Good job diagnosing it. That’s absolutely insane that 2004 was 20 years ago.
Hey Chris, I love watching your videos even if I'm just a sparky, it helps to show me troubleshooting tidbits, I did notice though that at the beginning of the diagnosis you checked for continuity to ground, however its also good to check for continuity between the phases before re-energizing a tripped main breaker as I have seen a scenario where 2 phases were shorted together but weren't shorted to ground.
That is a possibility for sure. Sometimes you can confuse yourself as you can have a low ohm reading between phases but not a shortage. But yes best to check while you're at it 🎉
Great point and thanks for the nice words and for watching!
I'm glad no one was there when it went but I bet you that was one heck of a light show coming out of that
After about 30 years into the trade you'll be able to diagnose with one low side gauge,
an old Taylor stem thermometer and fix most of it with a SOG or Leatherman tool.
You know what the real problem is?
A 20 year old Lenn-ox!
This ain't a 1950's Carrier Weathermaker!
Shame the owner for having inefficient garbage still being used.
My rule was 10 years max on anything.
7 years was maximum for equipment depreciation!
I only slummed for mom and pop startups until they got on their feet and understood equipment depreciation for tax advantage for their business.
Hey Chris you absolutely are an expert! This video show that your knowledge makes a HUGE difference when doing big picture diagnostics. Great video
Thanks
Always look forward to watch your videos. Your troubleshooting expertise is on point. Keep up the good work
Once again I learn a lot from you. You explain everything the way I can learn. You are sharp
I’m the guy that does residential. Waiting for the update on your personal house about the communication carrier. I’ve installed a lot of communication systems just not carrier. Lennox and trane is the go to for my company
Compressors need motor overloads.
You should be using an insulation tester, 500v to earth picks up lots of faults.
You should be getting commission for selling a new unit.
Great channel 👏
(2) 15 tons direct from Lennox national accounts will run you 68k and about 20 weeks lead time.
Chris is a master at his craft that’s y he’s the best of the trades. Very thorough and precise work.
Thanks bud
Loving the new intro.
The thought of a chef sitting there at the breaker box, just resetting it over and over.... why... if it goes pop right after you reset it the first time, that means something is seriously wrong, so STOP DOING IT!!!
Exactly
By far one of your Best videos i"ve watched. Your customers are lucky to have you.
Great work, Chris. Thank you.
Good troubleshooting chris
Thanks
Yup...that rtu has lived a long hard life.
Probe placement was exactly what I wanted you to show.
That's an awesome diagnosis. Well done. Lots to look at, observe, and consider. I hope you get all the repairs on that. Gravy.
Great job Chris great diagnostic check out.
Chris, looking great on the intro ( I thought I was in a club).. But you still the man of diano off these units sir..... great vid.🙂
But dude!!
The cook or chef is the top dog in the facility!!
Another words, your understanding of a ohm doesn't even come close to their understanding of how to flip a patty melt, do you understand that?😂😂
Buena noche Chris, estupendo diagnóstico y supongo también excelente reparación. Que buenos trabajos realizan, mis respetos para ti y tu equipo.
Saludos desde Coacalco Edo de México.
Gracias por el cumplido
Thanks for explaining about your breakers! Where I am our breakers only have two states, not three. Very interesting to learn about breakers that have off and tripped as distinct states.
As always Chris, great detail on big picture problem[s] evaluation. Keep up the great training, have a good season this year. Just please don't try to overwork yourself, you aren't getting any younger and your body needs a break. Also your family needs you to spend time with them. Best of luck and be safe out there !!!
Thanks for the kind words
Another top notch video. 👍🏼👍🏼
Great Video. Thank you for sharing.
Thanks
This was a really great video. Thanks for going thru the debug. (and yea, you "are" actually an expert...)
Nice new intro and I like those valve stem suppression tool will put on my new tool list to buy❤
Excellent troubleshooting skill on display here.
That thing had to have made one heck of a bang when it went.
My first thought was that contactor looks like it may have closed on a phase-to-phase short.
How that short got there?
The world may never know. At least until you get a chance to angle-grinder that compressor apart. I'm so looking forward to this one.
I think it either single phased from a failing contactor and/or prolonged overheat degraded the oil and windings until something went phase to phase short, just in time for the unit to call. KAPOW.
The compressor has been single phasing and overheating internal star point klixon hasn't re-set..
It's a shame I don't live in USA. Would love to work with you. :) your awesome. Been watching pretty much every video you make :)
35k???? omfg that's insane indeed. Unit like that round here... 15k
I replaced some blower pulleys on a couple of similar Lennox units last week. I couldn’t believe how stupid easy it was, it was especially cool how just with the removal of two screws that whole blower assembly can slide right out.
As for those core depressors, I just recently discovered those marvelous little things. I picked up a cheapo Yellow Jacket version out of necessity, so I could pull a vacuum on a system with those stupid coremax valves. I plan to eventually get a couple of those Appion versions. I have an Appion vacuum rated shrader core removal tool, and finally used it for the first time yesterday. They definitely make a quality product.
this is a great onsite video, troubleshooting in real time
Thanks!!
Great job 👏 🎉
Thanks
NOT SURE WHY BUT, THE 2 BURNT TERMINALS SHOW A 1 PHASE CONDITION DOWN TO THE COMPRESSOR. YOU CAN PROVE IT WHEN YOU OPEN THE COMPRESSOR AND THERE IS 2 BURT, 1 GOOD PATTERN ALL THE WAY AROUND THE WINDINGS. I WORKED IN AN ELECTRIC MOTOR SHOP FOR 24 YEARS.
Your evaluation of the unit as a Big Picture situation is the key to making their decision to replace or repair the equipment. Your valuable trust from the customer is also a big key. Lots of key components played a role in the can to go bad. Awesome explanation of how to evaluate the equipment of an overhaul. IMO I say said and done about 50k start to finish but its your area you know what it cost. A 15 ton replacement would be about 28k. Hope ya get the job Chris. Nice video and work as always.
Thanks bud
You are always very welcome bud.
You're giving them your educated opinion.
I would totally guess here that the motor shorted internally between two phases, (1/2) and then fused/melted the contacts together on the contactor. It then melted the windings and opened up internally. I am surprised there are no fuses internally in the unit to protect all the internal wiring of each fan / compressor. I see the one set of fuses, but assume that is for the fans. 👍🤠
All the years in college come flooding back. Professors lecturing that the circuit breaker "Is there to protect the circuit".
"The load is on it's own". FAA Test Question.
You need years of school to know that? Yikes
@@Brekstahkid 150 credit hours. NO electives. Those were the days that you really needed to know your stuff before they give you that degree and license.
@@stevenhorne5089
True.
Great job as always hopefully they will want it fixed or replaced knowing that it is r22
I really like your new intro
You checked shorts to ground but you should have also checked phase to phase for shorts as well to be through.
Your the greatest.
Nice job. It's very important for people to realize that those are not always a current.
protectors. Also if the lower circuit of the evaporator is the one that's not working it can cause water leaks in more humid climates, although that should not be a problem in Southern California. (But don't quote me)
Contactors should be checked during a p.m.
Yes, you're 100% correct.
2nd video- I guess it's official? absolutly love the new intro ❤
thanks, glad you like it
Very good training video. I was wondering when you would get around to checking for burnt and/or acid. Never saw a burnt compressor not showing some resistance or grounding on the windings. Possible, I just have not seen it.
Can't find my HVACR hat. Time for a new one..
Looking at the temperature of the first register does show total system performance for a unit which is important from the perspective of mechanical engineering. However, looking before you pickup motor heat in a draw-through fan type of unit should tell more precisely about your refrigerant system's performance. At the register you have to remove the motor heat and that's more of an estimate unless you are getting pre and post motor readings.
It’s really sad that in 2024 people don’t know what a tripped breaker is. Basic knowledge and skills man…
The inside at the thermostat sounds like mcdonalds
Ah yes the Henny Penny deep fryers
Sounds like it is time to run the vat filtering cycle
European here, so my point of view about electrical stuff if going to be different from the one an American would have.
I noticed that the contactors have no overload relay or any other means to shut down a compressor or blower motor if they run into an over current condition. That seems dumb, if a motor would run into a situation that leads to it pulling more current that what it's rated for, you want it to turn off to not burn it out.
What I want to say is that the way that unit is wired seems, to me anyway, to be asking for this sort of thing to happen really.
7:50 You were in tone mode, and it didn't beep between the legs. Open winding means no connection between the legs - so infinite resistance. Open winding is the opposite of a short, no?
Hey, i really love your videos. You have an overall great attitude regarding the way you are doing your job. But please do your body a favor and do not bring it to contact with refrigerant from systems that have so clear indications for burnout. Certain ones have fairly nasty decomposition products and R22 is on that list. Remember, all safety regulations are written with blood.
Correct me if I'm wrong but putting both leads on the metal of the rtu isn't testing if you have good ground, you're only testing that you have continuity on the metal of the rtu?
Could you explain what you meant by you switched the wires to the top of the relay to test fan operation? Also, how do you troubleshoot those relays on the lennox systems? I recently jumped to commercial and we work on a lot of those lennox prodigy systems so I'm trying to learn as much as I can about them. Love the channel and I'm going to check out those core depressors, thanks man!
My guess is the stage 1 fans are powered by one relay just for stage one, and that relay wasn't activating due to the pressure switch, so either he switched the wires to a different relay from a different stage, or switched the wires from the output side of the relay to the input side to get the fans running for the test.
Thanks for the questions, I'll dive into them a bit further on my next live stream
Sure would like to know what happened. Breakers pop on a over current, but the compressor was completely open (perhaps opened after the breaker tripped?) That contactor looks interesting. Almost like there was a phase to phase short, but I'm not sure how.
Two things, when you tested the resistance of the dead compressor and found it open. Could you do a resistance check to show a good compressor? I mean the second stage looks like a similar concept. Also why didn't you replace stage 1 contactor once you found it to be bad and loto the dead compressor?
Good question, I'm going to discuss this a but more on my Monday night live stream
with the burned contactor I would have removed the load-side wiring instead
the coil is designed to handle long-runs and the part we are isolating is the blown compressor
electrically there is no difference to a welded contactor to just remove load or supply side, they both effectively remove the welded copper bars from the circuit
now from a safety standpoint it is slightly less safe to have 150a 208v three phase exposed and not connected to anything, but as this is the control box with other similarly exposed 208v three phase connections I see no benefit in removing the supply side instead of the load side
in fact it is silly to remove supply with the included contactor power transformer wiring, just isolate the compressor from the AC supply
actually just unplugging and covering the molex with a temporary flag and tape would do just as well, you flag it as "blown contactor and compressor, do not re-plug" and problem solved
I wonder what the cost would be to replace a unit in Northern Ontario ?
Im just now realizing you switched at some point from a Galaxy tab to an iPad
Hi
Did you have to jump out the y1 on the board or did the two secondary compressors always run at the same time
Chis, did you check for phase to phase shorts anywhere before resetting the breaker? i saw you check voltage and continuity to ground but the only place i saw you check for phase to phase shorts was the compressor itself.
The oil on the motor windings may act to breakdown the coating on the windings and the dirt that gets stuck in the oil can act as a thermal insulator. Kinda like "fixing" a fan by spraying WD-40 on it. Once it gets on the windings it's only a matter of time. After figuring out how the motor got coated in oil and eliminating that problem then the motor should be replaced or put on a watch list because it's gonna die sooner.
U didn't diagnose the condenser fan relay or pressure switch curious was it the relay or pressure switch
What killed that compressor was that kitchen exhaust fan inches away.
Nah they don’t cook anything under that fan and they haven’t for years even when they did it was just nachos in a salamander , they just don’t do any maintenance on their equipment and that is what killed the compressor
@@HVACRVIDEOS salamanders run about 900 degrees. it sure didn't help when they ran it to a neglected 20 year old piece of garbage!😆
@@HVACRVIDEOS I'd advise extending the ducting of that exhaust fan at least as high as the condenser fans on the new system.
You could even scab a section of round metal ducting to keep the heat away and not mess with moving the exhaust fan.
Even though the contactor was fused and pulled in, one of the contacts may have been burned out completely and the compressor may have single phased?? Just guessing.
Why isn't there a fuse for each compressor so that if one contactor or compressor goes bad the system can continue working?
Do you use acid scavenger to help neutralize any oil that's still in the system?
No I don’t, I prefer not to add anything to the system that isn’t the proper oil or the proper refrigerant. If I have a dirty system I clean it up with driers and new oil
What I am about to say casts NO aspersions upon you, Chris. Quite to the contrary. On other public fora, people are commenting that the owners' maintenance or lack thereof of their HVAC systems all the way down to their walk ins and freezer drawers are grounds for NEVER EVER patronizing these food locations. NO WAY. I LOVE what YOU do , often having to get people by on their supposed dime they have left to service things, but video inside these restaurants show PIG STIES that are abused and operated by people who have NO KNOW-HOW whatsoever. Out of controls . I LOVE YOUR videos tho Chris.
32:50
Ironically The cook is responsible for the dumpster fire i.e. melting the bus bars, breakers & wirings & soon later, lives of 4 alive compressors by an inexperienced electrician 🤐🤐🤐🤐
Something catestrophic inside that compressor.
Is it worth putting a phase 🤔 monitor lock out installed
They can cause a lot of issue and can be too sensitive and have false positives. Especially on old buildings
I hate those old Honeywell thermostats
So what is the difference between triped and off !!
Both cases off !!
Thanks for your videos
My understanding is that most breakers in the USA have distinct positions for "off" and "tripped" and you have to move the handle from the tripped position to the off position before you can reset it. This distinguishes a tripped breaker from one that is just turned off and also makes resetting more of a deliberate action.
The din-rail mount breakers we use here in the UK on the other hand normally have no such distinction.
@@petermichaelgreen Makes sense, Thanks.
In Dubai also on/off never saw something with trip
@@petermichaelgreenIt may be related to the requirement that breakers "trip free": they have to be able to trip, opening the circuit, even if the handle is jammed or held in the "on" position.
@@gwillen Breakers "trip free" on both sides of the pond...
👍🏿
I totally get why you moved and removed all those wires off the burnt contactor but would nt of it been easier just to put a new contactor in? All that messing around and you have to revert it back. I get that nte s and quoting exist but seems like a lot of work lol
I would hope that if/when he comes back to the unit to replace the contactor and compressor, he also replaces, or at least cuts back and re-terminates those burnt wires.
Good question, I'm going to discuss this a bit more on my upcoming live stream Monday night
McDonald’s needs to keep up with there equipment lol😂
I GOT TO ADMIT ITS NOT BEAT DOWN. I WOULD JUST REPAIR IT .
It’s not my choice the customer makes that decision and they also purchase their own replacement units so I just give them a repair price and they decide from there
@@HVACRVIDEOS I GET WHAT YOUR SAYING. BUT IF I WAS TO LOOK AT THAT . I PERSONALLY WOULD SAY IT DONT LOOK A PICE OF CRAP. LETS JUST REPLACE THE PART THAT NEED TO BE CHANGED AND GET ANOTHER 20 YEARS OUT OF IT . SOME OF THEM LOOK LOOK LIKE CRAP . BAD WIRING THAT LOOKS DANGEROUS. BUT THAT UNIT LOOKED IN NICE CONDITION. BUT AS YOU SAID ITS DOWN TO THE CUSTOMER. YOU STILL NEVER GAVE ME AN ANSWER TO WHY YOU . DONT USE THERE WATER TO ATOMIZE THE WATER TO KEEP COOL ON HOT DAYS . WHY IS THAT . CAN YOU NOW ANSWER WHY YOU DONT DO THAT . ITS A VEREY SIMPLE QUESTION TO ANSWER. BUT YOU NEVER DO . ITS NOT LIKE IT WOULD BE UNSAFE TO DO SO . I AWAIT YOUR ANSWER ON THIS . IF YOU DONT MIND . THAY USE IT IN AIRPORTS TO KEEP YOU COOL . AND DONT TAKE OFFENCE OK . I LOVE ALL THAT YOU DO .
i have put down the 380th like for the vid
Film the autopsy cause we gotta know as well Thx
👍👍😊😊
The electrician must not be very good at his job, that is the first thing that needs to be done, check phase rotation!!
I don't like how you are using the schrader core compressors. If you are not bleeding between the probe and the core compressor, then it means that the air, all the way from the sensor to the valve part inside the schrader core compressor will migrate into the system. The air will not stay in the bottom of the probe, it will mix with the refrigerant into the system. Not the end of the world, just the feedback you are asking for sometimes. After 10 times probing up, it may be an issue if it is POE oil.
Ah yes all that air getting into a positive pressure system that’s higher than atmospheric lol
@@hvacmisadventures I am sorry, it is wrong, the small amount of air will mix when the pressure has rised, then it is free to go. Just like mixing concentrated beverages with water in a glass, the concentrate first and water on top, it will still mix.
Nope.... dont like the new beginning bump scene... I like the old one
Me too but I'm extremely adverse to shitty music which a lot of CZcamsrs seem to think enhances their videos 😂
I love corny synth wave music
@@HVACRVIDEOS you should put it the corny synth music at the end of your videos in the end credits.... the beginning should be more of a professional thing... just my thoughts... and it sorta works when you got a lot of video with the no explanation needed
Nitpicks
You don't lack resistance between the windings, you lack continuity
It's not the main breaker, that's the one going into the panel, if that was off you would have a lot more stuff down.
Sounds like a McDonald's on the inside
less talking, more working
Regular Mtce. is Good Invest. Customer has Expenses he feels More Important. Old Fram Oil Filter Commercials of the 70’s, “Pay Me Now or Pay Me Later”. 🤔