Ive been wating these vidoes for a bit now, probably about a year or 2? And thanks to them i was able to get my stores freezer ( walk in cooler to adjacent freezer for ice-cream and bagged ice) going for the night, till my boss called a tech in the next morning, the little wall timer for the freezer had been going bad and got stuck and let the box go warm, she was freaking out thinking that all our product was about to thaw and go bad, i remembered watching one of your vidoes on the box timer going bad and sure enough, it was stuck 9 min in to a 15 min cycle, i turned it off and the evap fans kicked back on, she told the tech the next morning about what i did to get it back up and how i figured it out, turns out he watches your vidoes as well! Keep up the awesome vidoes!
Chris dude, your trouble shooting abilities and ability to articulate that into video is next level, I've been in the trade for over 20 years, I really enjoy watching other masters at work. It keeps my memory refreshed for when I get those wierd little multi minor issue calls, I swear those are the worst they always leave me second guessing myself
I think as service techs we all have a phantom call where it “ wasn’t working “ but sometimes you show up and it is !! No matter what you check and how much you look into it , it just runs ! Great video as always .
Burned contacts on the contractor indicates heat = resistance = voltage drop across the contractor which affects the operation of the compressors are whatever the load happens to be. Great persistence and troubleshooting👍👍
i literaly randomly saw your first video (for me) wich was the "the AC is on fire" you literaly made my day that day and i am a returning viewer. THANK YOU
Another interesting video. If you wanted to know if by chance the unit was power cycled by itself you could have checked the coded on another unit. Also, whenever I reset codes I would leave a note stating the time and date so anyone following up could see whatever codes have occurred since that time.
Contractors are like zip ties. Very cheap insurance. I always enjoy your troubleshooting. It has helped me in my troubleshooting skills, both with hot and cold side equipment.
So cool to see how you go through the units and how you evaluate operations etc! I really enjoy your videos Chris! I always learn something new from you!
If those are 208v units....you could always use a RC Snubber across the contacts. They are great for arc suppression and they are for transient voltage spikes. I frequently see them on contactor coils ( 120v coil ) they are normally used on controls circuits, especially great for systems using boards to enable coils for switching components. Great video Chris
Minor FYI: inch-pounds (or pound-inches), not pounds per inch. Inch (from axis) times pound (of force). (@19:48). And yes, that directly translates to one pound of force exerted at a distance from axis of one inch. (Or 1/2 pound of force at a distance of 2 inches, or 1/12th pound of force at a distance of a foot, etc.) (For one inch-pound. 25 inch-pounds is of course 25x greater.)
You would need an oscilloscope to see if your capacitors were bad under load. The calculation used is only to find the rough capacitance needed for the motor. Just a heads up.
If you're a repair tech, systems with know failures isn't a bug but features to them. Good for HVAC startup companies, bad for the older guys in the trade. I'm retired but Bosch still concerns me. Dealt with their garbage in the 80's a couple of times and also Mitsubishi too. Somewhere there is a niche market where the summer temps are like in Hokkaido, Japan?
Cannot believe the sheer volume of caked on dust in that return duct. Must be causing quite a bit of turbulence/resistance? Also, as soon as I saw those caps, I was saying to myself "all east two of those are going to be bad". Can you tell I've been tuning into the channel for a while? Haha.
Buenas tardes Chris, nuevamente un trabajo excelentísimo, lo de los contactores no lo sabía y mucho menos lo imaginaba pero hoy aprendí mucho con tus grandes explicaciones. Ahora se que hacer y que explicar a los clientes cuando tenga que cambiar algún contactor, pues si e tenido contactores con arcos de corriente. Gracias Chris por tus consejos y tus enseñanzas profesionales son muy importantes y valiosas para mi. Saludos desde Coacalco Edo de México.
@@evantye-o3myou're probably searching for a technician position when you need an apprentice position. Try local union if you're okay with union because at least here they have the best apprenticeship program.
Diatomaceous earth from the garden center will get shed of those spiders inside and out and it can be food grade do it's not poisonous in either style. And,nit will chase off the Roaches and scorpions that come with. 😅
10:30 Time for 4 new blower motors when you have some free time. Save you 4 Saturday at 10:PM emergency calls :-) I am guessing they are all original and have ran the same hours.
Quick disclaimer. You know that unit a lot better than me and I am in no way a professional HVAC mechanic. Just commenting for engaugement. Always a good video.
@HVACRVIDEOS I fondly remember on a few of the Advanced Refrigeration podcasts they talked about using a 5HP Copeland scroll to recover refrigerant from racks for refrigerant retrofits. Pumping straight liquid, moved 1000LBS in 30 minutes. They just pumped more oil in when it got noisy. Scrolls are wild.
19:48 it's not "pounds per inch It's multiplied not divided. normally stated as inch pounds. If it wants 1 inch pound and you're 1 inch away you apply one pound. If you're 2 inches away you only use half a pound because of mechanical advantage. 2 inches * 0.5 pound still equals 1 inch pound. Also, it's the same as how you measure torque of an engine except that's foot pounds.. but a foot pound is just 12 inch pounds.
Spiders are attracted to where their prey is located. They're not really attracted or repelled by light, in my experience (some species really prefer dark areas, though)
About two weeks ago, I will discuss this on my livestream this evening 11/18/24 @ 5:PM(pacific) on TH-cam, come on over and check it out th-cam.com/users/live5ZxU8pbDIZQ
Just a little thing, but I like how you took the screen capture video of MeasureQuick, rather than trying to record the screen of another device with your camera. It makes the readout much more readable. Probably also has a smaller file size.
Really now. How often do things "blow up"? Does that mean the overload trip? "Blowing up" is relatively rare. If things are potentially going to "blow up" you should know of the risk and stand aside. 'Blow up' is a bit over-used term.
Seems liek the contactors are very often problematic. Why dont they use solid state relais for the compressors? Price? Or are there other reasons as well
@@HVACRVIDEOS as always in our society ... Thanks for the fast response! Over here in Europe we mostly have frequency driven compressors. In fact on new units I am only aware of frequency driven systems, I don't think there are contactor based systems available anymore. Its always quite interesting how different technology is in the US
A single 3 phase 40A contactor is about $40. You need 3 SSRs at about $180 each to do the same job. Unless you need the SSR for control reasons, you probably won't really want to spend the money on them. The prices I quoted are based on a repair I recent did to an environmental chamber.
I'm in IT, and I still wonder if a system will come back online after doing anything with the power. I've had at least one power supply, when being tested, turn into a micro electrical storm.
My guy has been servicing this customer for 20 years.
Respect.
Yeah our company has been working for this customer for a very long time and I’m very thankful for that
Obviously the customer respects him too.
Ive been wating these vidoes for a bit now, probably about a year or 2? And thanks to them i was able to get my stores freezer ( walk in cooler to adjacent freezer for ice-cream and bagged ice) going for the night, till my boss called a tech in the next morning, the little wall timer for the freezer had been going bad and got stuck and let the box go warm, she was freaking out thinking that all our product was about to thaw and go bad, i remembered watching one of your vidoes on the box timer going bad and sure enough, it was stuck 9 min in to a 15 min cycle, i turned it off and the evap fans kicked back on, she told the tech the next morning about what i did to get it back up and how i figured it out, turns out he watches your vidoes as well! Keep up the awesome vidoes!
Chris dude, your trouble shooting abilities and ability to articulate that into video is next level, I've been in the trade for over 20 years, I really enjoy watching other masters at work. It keeps my memory refreshed for when I get those wierd little multi minor issue calls, I swear those are the worst they always leave me second guessing myself
Thanks bud glad to know you don’t think I’m crazy ….. well at least when I’m troubleshooting
good video Chris but why do you have to tell security before you shut down the unit
Likely because of the smoke detection system wired into the HVAC somehow@@melvinlazear8068
I think as service techs we all have a phantom call where it “ wasn’t working “ but sometimes you show up and it is !! No matter what you check and how much you look into it , it just runs ! Great video as always .
I completely agree
It might be coincidence, but anytime I see a bunch of spider webs in my rentals, I can guarantee there's roaches.
If there's spiders, then there's enough food around to sustain them. And spiders eat roaches.
It could be a coincidence, but it's probably not a coincidence spiders enjoy themselves a good meal
Burned contacts on the contractor indicates heat = resistance = voltage drop across the contractor which affects the operation of the compressors are whatever the load happens to be.
Great persistence and troubleshooting👍👍
Since spiders and roaches are the most common indoor and outdoor bug. I could see that being accurate
i literaly randomly saw your first video (for me) wich was the "the AC is on fire" you literaly made my day that day and i am a returning viewer. THANK YOU
0:40 Something about the Symphony of those compressors thats calming…
Wisdom beyond your years you have the best videos out there so far
I appreciate that, thanks for watching
Maybe the spiders have a restaurant problem?😁
Another interesting video. If you wanted to know if by chance the unit was power cycled by itself you could have checked the coded on another unit. Also, whenever I reset codes I would leave a note stating the time and date so anyone following up could see whatever codes have occurred since that time.
Sounds like one of those compressors has seen better days
Contractors are like zip ties. Very cheap insurance. I always enjoy your troubleshooting. It has helped me in my troubleshooting skills, both with hot and cold side equipment.
Thanks bud
So cool to see how you go through the units and how you evaluate operations etc! I really enjoy your videos Chris! I always learn something new from you!
If those are 208v units....you could always use a RC Snubber across the contacts. They are great for arc suppression and they are for transient voltage spikes. I frequently see them on contactor coils ( 120v coil ) they are normally used on controls circuits, especially great for systems using boards to enable coils for switching components. Great video Chris
Where do you normally source the snubbers? Local suppliers? Online?
@@RoastedHVAC: We use the Quencharc ones from Paktron because a lot of the big electronics suppliers stock them.
Something about systematic troubleshooting is so satisfying. Maybe it's because it's not me doing it. Another great job.
Thanks bud
I have always changed back plates and arch covers also, but it’s these details that make good techs.
Truth
Minor FYI: inch-pounds (or pound-inches), not pounds per inch. Inch (from axis) times pound (of force). (@19:48).
And yes, that directly translates to one pound of force exerted at a distance from axis of one inch. (Or 1/2 pound of force at a distance of 2 inches, or 1/12th pound of force at a distance of a foot, etc.)
(For one inch-pound. 25 inch-pounds is of course 25x greater.)
These compressors sure sounded like death...
Accurate 😂
Great advice in the closing words Chris. Thanks for another awesome video! 👍🏻
Great job!
You would need an oscilloscope to see if your capacitors were bad under load. The calculation used is only to find the rough capacitance needed for the motor.
Just a heads up.
If you're a repair tech, systems with know failures isn't a bug but features to them.
Good for HVAC startup companies, bad for the older guys in the trade.
I'm retired but Bosch still concerns me. Dealt with their garbage in the 80's a couple of times and also Mitsubishi too.
Somewhere there is a niche market where the summer temps are like in Hokkaido, Japan?
Great video ❤
At 6:50 - I love the new gauges overlay view, Chris!
Great video. Thank you for sharing
Great job Chris. Big picture stuff.
Thanks
Cannot believe the sheer volume of caked on dust in that return duct. Must be causing quite a bit of turbulence/resistance? Also, as soon as I saw those caps, I was saying to myself "all east two of those are going to be bad". Can you tell I've been tuning into the channel for a while? Haha.
Buenas tardes Chris, nuevamente un trabajo excelentísimo, lo de los contactores no lo sabía y mucho menos lo imaginaba pero hoy aprendí mucho con tus grandes explicaciones. Ahora se que hacer y que explicar a los clientes cuando tenga que cambiar algún contactor, pues si e tenido contactores con arcos de corriente. Gracias Chris por tus consejos y tus enseñanzas profesionales son muy importantes y valiosas para mi.
Saludos desde Coacalco Edo de México.
Gracias amigo, hola que un día tu puedes hacer videos sobre tu trabajo en México
@HVACRVIDEOS
Lo intentaré hacer mi estimado Chris, tal vez en un futuro. Y nuevamente muchas gracias por todo tú tiempo.
Saludos y excelente día.
I was going to say that the supply fan is running backwards but I have been fooled by frame rates and youtube video compression more than once.
True professional
I appreciate that
I hate seeing these units get replaced, they are so much fun to work on
I don't mind them to much myself
Spider web..
This restaurant should call for help on the Halloween, to be spot on with the vibe.
I for real should have just went to school for automotive smh . Got a hvac cert in August and it’s like fking impossible to get hired anywhere
Lmao how
@ well they all just want people with experience basically
@@evantye-o3myou're probably searching for a technician position when you need an apprentice position. Try local union if you're okay with union because at least here they have the best apprenticeship program.
@ yeah it’s just annoying where I’m at because the union says it’s not taking any more apprentice applications at the moment
@@evantye-o3m keep searching, call all the HVAC companies, asking for an apprenticeship opportunity. call back and follow up.
Good job Chris..........
Thanks bud
Diatomaceous earth from the garden center will get shed of those spiders inside and out and it can be food grade do it's not poisonous in either style. And,nit will chase off the Roaches and scorpions that come with. 😅
10:30 Time for 4 new blower motors when you have some free time. Save you 4 Saturday at 10:PM emergency calls :-) I am guessing they are all original and have ran the same hours.
Quick disclaimer. You know that unit a lot better than me and I am in no way a professional HVAC mechanic. Just commenting for engaugement. Always a good video.
@jonleiend1381 thanks bud, I appreciate the feedback
Yes! Scary sounding compressors after only 0:35, this is going to be a good one, hoping for angry compressor 😀👍
The angrier the better
@HVACRVIDEOS I fondly remember on a few of the Advanced Refrigeration podcasts they talked about using a 5HP Copeland scroll to recover refrigerant from racks for refrigerant retrofits. Pumping straight liquid, moved 1000LBS in 30 minutes. They just pumped more oil in when it got noisy.
Scrolls are wild.
19:48 it's not "pounds per inch It's multiplied not divided. normally stated as inch pounds. If it wants 1 inch pound and you're 1 inch away you apply one pound. If you're 2 inches away you only use half a pound because of mechanical advantage. 2 inches * 0.5 pound still equals 1 inch pound.
Also, it's the same as how you measure torque of an engine except that's foot pounds.. but a foot pound is just 12 inch pounds.
Another great video.
Thanks
If the power company loses a leg could that cause a contactor to burn?
Had me on the edge of my seat
great job!
Thanks bud
Question.. would a air curtain by the front doors or entry ways help?
It could help, but they wouldn't spend the money on it
I had to stop it at 0:33 I'm very arachnophobia and even seeing them on a screen makes me feel sick... so no can watch this one.
My bad
@@HVACRVIDEOS no worries sir.
You're not the problem... spiders are. 🤣... and my irrational fear of them.
I keep the contact labels upside down for the spiders. Really they spend more time there than I do.
Lol
My favorite tech to listen too.
Thanks bud
I have found that spiders are really attracted to LED lighting.I changed all of my facilities to LED outdoor lighting and holy smokes,its awful
Spiders are attracted to where their prey is located. They're not really attracted or repelled by light, in my experience (some species really prefer dark areas, though)
@@tbeldingcorrect,the leds attract other bugs and a spider see's the Hot Donut sign all lit up
caps, contactors and belts are cheap, replace them often.
When did u remodel your office
About two weeks ago, I will discuss this on my livestream this evening 11/18/24 @ 5:PM(pacific) on TH-cam, come on over and check it out th-cam.com/users/live5ZxU8pbDIZQ
Why were the dip switches labeled ASS? I do things like that in source code comments, but never on the silkscreen of the PCB.
Lol, I'm not sure
Just a little thing, but I like how you took the screen capture video of MeasureQuick, rather than trying to record the screen of another device with your camera. It makes the readout much more readable. Probably also has a smaller file size.
Yes and yes it does I believe
If I join your channel what are the perks?
Hey Chris, are compressors like pumps that need refrigerant?
Yes, they pump refrigerant in its vapor state if that's what you mean
03:44 - This is why I HATE spiders. I hate having to kill them, but I HAVE to kill them (when they are found at places like inside my room etc.).
Duct cleaning anyone? SMFH....
Really now. How often do things "blow up"? Does that mean the overload trip? "Blowing up" is relatively rare. If things are potentially going to "blow up" you should know of the risk and stand aside. 'Blow up' is a bit over-used term.
Another way of evaluating your thoughts is telling it to someone else.
I’m a nut… LOL
Seems liek the contactors are very often problematic. Why dont they use solid state relais for the compressors? Price? Or are there other reasons as well
Mainly price is the issue
@@HVACRVIDEOS as always in our society ... Thanks for the fast response!
Over here in Europe we mostly have frequency driven compressors. In fact on new units I am only aware of frequency driven systems, I don't think there are contactor based systems available anymore. Its always quite interesting how different technology is in the US
We also have inverter driven compressors, my customer just don’t choose to spend that kind of money
A single 3 phase 40A contactor is about $40. You need 3 SSRs at about $180 each to do the same job. Unless you need the SSR for control reasons, you probably won't really want to spend the money on them. The prices I quoted are based on a repair I recent did to an environmental chamber.
@@neosenshiexactly
62nd thumbs up
How is an HVAC unit not like a woman? Because it's occasionally satisfied.
Haha misogyny so funny.
Be better.
@@JH-tc3yu haha, says the girl. be better.
I thought it would be something about being fridged.
@@grandinosour lol
Back to talking about stuff blowing up. Dude must not have confidence in his own work to not know if somethings going to blow up or not
Am guessing you're not a trade person 😂
We all pray when re-energizing a circuit post-repair.
@@analogmoz facts haha I am always afraid when energizing a System I worked on.
I'm in IT, and I still wonder if a system will come back online after doing anything with the power. I've had at least one power supply, when being tested, turn into a micro electrical storm.
Yeah man as the others have said as a repair person your always hoping it doesn't blow up when energizing it....