That poor RTU was so choked-up it couldn't breathe! Good catch on the HP limit switch. It's rare that an on/off switch like that develops resistance, but when it does, it won't last much longer... And you saved yourself a return call, in addition to keeping the client from saying, "Chris just fixed the damn thing, why did it fail again so soon?" Good call on locking out that heat exchanger, it's an inferno waiting to happen the first time it fires up.
You do such a good job on the recap at the end of the video. I have learned so much watching your videos. I wish I worked with a guy like you, it would be great to have a mentor like you! Thank you for all the hard work, keeping us fed with new content!
I appreciate that you talked about how you handle/run your business a little bit. We don't need to know rates, but I like that you offered a suggestion on how to approach the job and how to quote it.
Thanks bud!! I will be going live on TH-cam this evening 8/2/21 @ 5:PM (pacific) time , to answer questions from the livechat, TH-cam comment and from emails, come check it out th-cam.com/video/DMdcdQaF-kU/w-d-xo.html
Great title. I debug software for a living and it's surprisingly similar to your work... You have to know the fundamentals and then reason out what would cause the observed symptoms/issues.
Those sealed pressure switches are not designed to be "cycled". That dirty condenser led to many trips along with the time the condenser fan died. That all exceded switches duty life. Great video!
I really enjoy your videos… do you think you could do a demonstration on how you pull and re-install the blower assembly as well as adjust/ tighten belts and pulleys?
I’ve worked on a lot these commercial units before and watching this seriously makes me want to pull my home units apart to see what mess might be inside that I don’t know about now.
After about a dozen years in HVAC/R I changed fields and went installing disptatch telco/ radio gear and tower/ mountaintop work. After about a 70 hour week I was in my bank--nice--cool, air conditioned after a VERY hot week for me--outdoors. The little sweetie teller, all dressed up, was "tired" after a "long day." I didn't say anything but "cry me a river" came to mind.
That's a good one. I did tower work and I know how it is to go up in the dark and not come down till the side lights come on. But I also know how it is to deal with the public all day and sometimes I think I would rather work outside lol.
@@resneptacle Horse shit. A young bank teller has zero stress compared to some of the stuff I did. You think there is no mental stress up on some forlorn mountaintop, if you get injured there is no fucking way help will get there "in time?" You think you don't have to "think" along with the "physical" as you are installing/ wiring/ configuring / and end to end testing telco/ radio/ data equipment? Bank teller stress. I laugh!!!
I use the same technique for replacing pressure switches. No one wants to pay for sweating a factory pressure switch back in, and I don't blame them. So far, I've never had one leak afterward. But I bet a lot of us do it.
11:06 I would have guessed the clogged condenser cause the high-pressure to trip many times and when it self reset so many times, it just finally started getting some bad contacts inside of it because it is a switch with contacts
The big picture diagnosis for this one needs to include why the heck there is so much grease. Is a range hood vent fan or exhaust fan not working properly? Does one need to be installed? As stated, ducting needs to be checked.. WTH is the kitchen doing to put so much grease out? PM's not often enough? etc. Good video and once again, thanks for posting..
So update on my window unit situation, after turning a resister on the control board into a black pool of goop, got pissed off, ordered a new unit, its only available online an was supposed to take 2 weeks to arrive, then went up to homedepot and got a portable unit, the plug on the portable unit melted, not sure whats going on there, the new window unit came in today while im at work, homedepot shipped it via FedEx, FedEx left it on my porch upside-down, so now ive gotta inspect it when i get home from work and make sure its actually working before i can put it in, im so mad
It's pretty wild to think that the blower wheel would actually rebalance itself. I'd love to know more about the mechanism by which it happens, especially if it's more than just the grease and dirt slinging around.
I'm not an expert in grease-dirt wheel balancing, but I'd think that the wheel gradually "adjusts" itself through vibration and shaking on it's own. One side gets out of balance, and then the next days/weeks of dirt can only stick to the side that isn't shaking as much until it eventually evens out. Then the process repeats. Of course there's some "survival of the fittest" going on, in that if the wheel can't overcome/shake off enough to balance itself...then it just fails and we don't get to the point where this "phenomena" happens.
Pm is so important! If the customer had regular pm done they would save a ton of money in repairs and extend the life of their units saving even more money! When you work on stuff like that everything must be addressed to get it back in working order!
Those Knipex wrenches are something extra. As others have said and you explained in the recap, measure voltage drop of things and you'll find the error in a chain like the LP, HP, et c. If you have a good voltage at the transformer, under load, the problem is downstream.
I just had a fan cycle (170open 225close) go bad. Well the a hole that originally put it on never put a schrader in. So when I took it off I got a nice freon burn.. well it has a schrader now AND I made a note inside the unit. Folks.. make notes when doing a repair in a unit to give a heads up.
Hey Chris had a unrelated question. Have a customer that keeps forming ice sickle on suction line p-trap at evap insulation is one solid piece not cut at p trap. There getting flagged by heath department because when ice sickle melts it makes pockets of ice on floor. Health department says this opens the door for bacterial growth.do u have any suggestions on how to seal this up better. Basically when unit goes into defrost suction line thaws out and water ends up at bottom of p trap and eventually builds into a big ice ball.
Just a thought: if you would spray some silicone spray or wirelube on a new blower unit, will it help with keeping grease buildup off? Normally dirt and grease will not stick to silicone oil.
I would take that blower assembly to an engine or cylinder head rebuilder. They usually have hot tanks and parts washers that'll make short work of that grease.
As previously stated, you can measure voltage across the switches just like you measure temp across the filter drier. I'm pretty sure you've done it before with contactors top to bottom
Great example of why businesses need PM Agreements to keep things running smoothly. They got off fairly easy with just a blower assembly, pressure switch, and a cleaning. Definitely some duct work issues there with improper exhaust air not funnelling the air away from the conditioning space. If I had to guess they added equipment into the kitchen without tending to ventilating it properly.
Amateur question; why is the swivel T not purged of air by quickly depressing the Schroeder valve? It might not be much air in it, but at the same time it feels like you are chasing atoms when evacuating before initial fill. Might not be as vad as i make it up to be though :)
You did a good job, I would have nylon tie the wires in spots and make the wiring look a little cleaner, instead of it looking like a mess, my opinion, good job Chris.
Might think about closing your drive pulley on the blower? Move a little more air and adjust the split. If I saw correctly you had some room in your amp draw.
Interesting design decision to put the evaporator in a box on the roof 🤔 You normally don't see this here: You'll have large pipes next to the building sucking in air and after the air is cleaned it will be send to the cooling/heating elements of the heat pumps. Usually you have also a passive heat exchanger between the exhaust air and the intake air to recover some of the heat/cooling passively and afterwards the heatpump will scavange the rest.
The failed high pressure switch may have caused the unit to ice up. If It was causing the contactor to pull in and out while it was failing, the blower can overheat and shut down causing the unit to ice
High pressure control was probably short cycling the unit for ages so now it is starting to fail as it is not a contactor and cannot take the constant opening and closing connections like a contactor can.
The office ac feeds the back kitchen too and if you look closely there were two return grilles there one for the main kitchen ac and one for the kitchen/office ac
Again, very good video. What is the reason behind cleaning up the wiring going to the economizer? I know it’s the right thing to do, but from a Business owning perspective why do you spend time cleaning up the wiring. Keep up the great work. We will get you to one million subs.
When you are the last person to put your hands on a customer's piece of equipment, you own it. If that wiring rubs out and causes a short it'll be on him to fix it, probably at no cost to the customer.
It might be worth looking at replacing it, potentially. My home's old AC was an old R22 unit that had a serious leak (likely the condenser being used as a urinal by the dogs), and the cost to recharge it with R22 alone (not including a new condenser coil) was enough to consider replacement. Add in that it was undersized and couldn't actually effectively cool anyway on a warm day... new one works great!
You can have it swapped out with r438a. It works great. No oil change required. Many contractors don't want to do it because they make much more money selling you a new system. I do the whole swap out for around $300, depending on how much your system holds.
I quit stocking R-22. Most of my customers already have 410A so R-22 at 1,000.00 is not worth stocking to sell someone a pound or two. I'll still buy it if my commercial customers need it but they usually need several pounds when they have issues. I rarely see residential with R-22 anymore. I realize some areas may still use a lot of it and companies in those areas should have it.
"And it is iced up..."
That ain't just ice, that's permafrost like what the arctic should have.
... so ship this unit over there, and let it help out a bit ;)
I haven’t seen it that solid on this channel for a while
Lol
That poor RTU was so choked-up it couldn't breathe!
Good catch on the HP limit switch. It's rare that an on/off switch like that develops resistance, but when it does, it won't last much longer... And you saved yourself a return call, in addition to keeping the client from saying, "Chris just fixed the damn thing, why did it fail again so soon?"
Good call on locking out that heat exchanger, it's an inferno waiting to happen the first time it fires up.
My house is 68.. all good in my hood. Stay safe and be well.
You don't have to brag about it... 😂
Your electric bill hates you 🤣🤣
Dang, I turn my heat on when it gets to 74.
@@NorthernS0utherer not at all.. I have a 5stage modulation unit and my house is zoned.
Another well mainttained rooftop AC-all the wiring up to code too.........................
Cleaned a residential unit that looked like this today. "I didn't know it needed maintenance". So much neglect, felt like a social worker...
You do such a good job on the recap at the end of the video. I have learned so much watching your videos. I wish I worked with a guy like you, it would be great to have a mentor like you! Thank you for all the hard work, keeping us fed with new content!
I agree and he is your mentor and mine, subscribe and keep watching.
The recap is the best. Take the blinders off. Do a great job. You will make more money in the end and have a happier customer.
I appreciate that you talked about how you handle/run your business a little bit. We don't need to know rates, but I like that you offered a suggestion on how to approach the job and how to quote it.
I love your videos that you’re the best at fixing Aircon’s
Good job man
Thanks bud!! I will be going live on TH-cam this evening 8/2/21 @ 5:PM (pacific) time , to answer questions from the livechat, TH-cam comment and from emails, come check it out th-cam.com/video/DMdcdQaF-kU/w-d-xo.html
This is the best dad joke title I've seen. Keep it coming.
Cleaning coils is so satisfying.
Great title. I debug software for a living and it's surprisingly similar to your work... You have to know the fundamentals and then reason out what would cause the observed symptoms/issues.
Those sealed pressure switches are not designed to be "cycled". That dirty condenser led to many trips along with the time the condenser fan died. That all exceded switches duty life. Great video!
Not first never first
But I do love these vids like a++++++ and educational
Him: “Iced up”
Ac: “I’m a walk in freezer I’m just doing my job”
u are first
I really enjoy your videos… do you think you could do a demonstration on how you pull and re-install the blower assembly as well as adjust/ tighten belts and pulleys?
I like to see the units being cleaned. Very satisfying!
I’ve worked on a lot these commercial units before and watching this seriously makes me want to pull my home units apart to see what mess might be inside that I don’t know about now.
Great job sir. Most don't test transformers under load and they spend all day thinking is a bad limit switch
👏👏👏👏 This was such a satisfying video to watch ! Awesome job guy! 💯
You saved that company 200$ on power with this clean up... Damn
And how much was spent fixing the result over not having the system maintained!!! Could have been way much worse!
Chris you are doing great !
I don't know why, but I find these videos entertaining now that I've been out of the field for a couple years.
Pluggo Buggo!! From top to bottom, inside and out.
You’re a GENIUS man
I was wearing the HVACR hat and it got me an Introduction to J.E Johnson. Thanks!
Thanks for the video so good to come along with you.
After about a dozen years in HVAC/R I changed fields and went installing disptatch telco/ radio gear and tower/ mountaintop work. After about a 70 hour week I was in my bank--nice--cool, air conditioned after a VERY hot week for me--outdoors. The little sweetie teller, all dressed up, was "tired" after a "long day." I didn't say anything but "cry me a river" came to mind.
That's a good one. I did tower work and I know how it is to go up in the dark and not come down till the side lights come on. But I also know how it is to deal with the public all day and sometimes I think I would rather work outside lol.
Difference between emotional and physical stress my dude, especially in how people handle each.
@@resneptacle Horse shit. A young bank teller has zero stress compared to some of the stuff I did. You think there is no mental stress up on some forlorn mountaintop, if you get injured there is no fucking way help will get there "in time?" You think you don't have to "think" along with the "physical" as you are installing/ wiring/ configuring / and end to end testing telco/ radio/ data equipment? Bank teller stress. I laugh!!!
I used to have a saying: "Follow me around for a week.........."
I use the same technique for replacing pressure switches. No one wants to pay for sweating a factory pressure switch back in, and I don't blame them. So far, I've never had one leak afterward. But I bet a lot of us do it.
Well done.
Sir did you purge the air out of that T fitting 😄. Nice clean up with the wires. Hopefully we get to see that evaporative cooler a little.
11:06 I would have guessed the clogged condenser cause the high-pressure to trip many times and when it self reset so many times, it just finally started getting some bad contacts inside of it because it is a switch with contacts
The big picture diagnosis for this one needs to include why the heck there is so much grease. Is a range hood vent fan or exhaust fan not working properly? Does one need to be installed? As stated, ducting needs to be checked.. WTH is the kitchen doing to put so much grease out? PM's not often enough? etc. Good video and once again, thanks for posting..
Good one Chris 👍
So update on my window unit situation, after turning a resister on the control board into a black pool of goop, got pissed off, ordered a new unit, its only available online an was supposed to take 2 weeks to arrive, then went up to homedepot and got a portable unit, the plug on the portable unit melted, not sure whats going on there, the new window unit came in today while im at work, homedepot shipped it via FedEx, FedEx left it on my porch upside-down, so now ive gotta inspect it when i get home from work and make sure its actually working before i can put it in, im so mad
Wait 24 hours before turning it on let the oil settle
Great video you can see problem in first 15 seconds of video..
It's pretty wild to think that the blower wheel would actually rebalance itself. I'd love to know more about the mechanism by which it happens, especially if it's more than just the grease and dirt slinging around.
I'm not an expert in grease-dirt wheel balancing, but I'd think that the wheel gradually "adjusts" itself through vibration and shaking on it's own. One side gets out of balance, and then the next days/weeks of dirt can only stick to the side that isn't shaking as much until it eventually evens out. Then the process repeats. Of course there's some "survival of the fittest" going on, in that if the wheel can't overcome/shake off enough to balance itself...then it just fails and we don't get to the point where this "phenomena" happens.
Great job and video like always
thank you for this video
Great info. great video. Thanks Chris.
Pm is so important! If the customer had regular pm done they would save a ton of money in repairs and extend the life of their units saving even more money! When you work on stuff like that everything must be addressed to get it back in working order!
Those Knipex wrenches are something extra.
As others have said and you explained in the recap, measure voltage drop of things and you'll find the error in a chain like the LP, HP, et c. If you have a good voltage at the transformer, under load, the problem is downstream.
Love the clips
I just had a fan cycle (170open 225close) go bad. Well the a hole that originally put it on never put a schrader in. So when I took it off I got a nice freon burn.. well it has a schrader now AND I made a note inside the unit. Folks.. make notes when doing a repair in a unit to give a heads up.
Hey Chris had a unrelated question. Have a customer that keeps forming ice sickle on suction line p-trap at evap insulation is one solid piece not cut at p trap. There getting flagged by heath department because when ice sickle melts it makes pockets of ice on floor. Health department says this opens the door for bacterial growth.do u have any suggestions on how to seal this up better. Basically when unit goes into defrost suction line thaws out and water ends up at bottom of p trap and eventually builds into a big ice ball.
The theme for today is "Dirty"
Just a thought: if you would spray some silicone spray or wirelube on a new blower unit, will it help with keeping grease buildup off? Normally dirt and grease will not stick to silicone oil.
I’d really like to know what you charge or price out a service like this. A pretty in depth PM on that unit!
Not legal to disclose his pricing, also that would change by region. But I agree that it would be nice.
The title is exactly how o expected it he service call to go “ya so um the office ac is bit warm and that ain’t cool”
I would take that blower assembly to an engine or cylinder head rebuilder. They usually have hot tanks and parts washers that'll make short work of that grease.
Got the new field piece psychrometer probes today and the new vacuum pump the 8cfm one by field piece not many videos on using on though.
nice job, DOMINO EFFECT, neglected unit can be a field day. what kind of restaurant?
Excellent vid, do you get approval from your customers before changing the blower, or is a surprise invoice-?
Well there went my appetite 🤣
Can you post your merchandise overseas... maybe Australia??
Beautiful work!
So the filters were last changed when you were there most recently...in April. Do people not know these need to be changed monthly?
As previously stated, you can measure voltage across the switches just like you measure temp across the filter drier. I'm pretty sure you've done it before with contactors top to bottom
"I treat this customer like my parents" That got a giggle out of me. Nice.
Yay! Great cleaning :)
What merv # filters do you se being used in California
3:17 as nor cal Dave would say pluggo buggo
Thats what I was thinking in mind when he said those filters were plugged🤣
Multiple offender deluxe
@@davidhl672 same here. 😁
Great example of why businesses need PM Agreements to keep things running smoothly. They got off fairly easy with just a blower assembly, pressure switch, and a cleaning. Definitely some duct work issues there with improper exhaust air not funnelling the air away from the conditioning space. If I had to guess they added equipment into the kitchen without tending to ventilating it properly.
Amateur question; why is the swivel T not purged of air by quickly depressing the Schroeder valve? It might not be much air in it, but at the same time it feels like you are chasing atoms when evacuating before initial fill. Might not be as vad as i make it up to be though :)
8:00 SHEAVE god damn it!!!!!!!!!!! LOL
You did a good job, I would have nylon tie the wires in spots and make the wiring look a little cleaner, instead of it looking like a mess, my opinion, good job Chris.
Might think about closing your drive pulley on the blower? Move a little more air and adjust the split. If I saw correctly you had some room in your amp draw.
Funny title. Love the work you do.
That compressor will never have heat issues 😆
These air filters filter out air very efficiently.
Do you service Rheem? Ive been having issues in that unit that Id like to learn how to get better at troubleshooting.
They are pretty much all the same
Interesting design decision to put the evaporator in a box on the roof 🤔
You normally don't see this here: You'll have large pipes next to the building sucking in air and after the air is cleaned it will be send to the cooling/heating elements of the heat pumps.
Usually you have also a passive heat exchanger between the exhaust air and the intake air to recover some of the heat/cooling passively and afterwards the heatpump will scavange the rest.
The failed high pressure switch may have caused the unit to ice up. If It was causing the contactor to pull in and out while it was failing, the blower can overheat and shut down causing the unit to ice
High pressure control was probably short cycling the unit for ages so now it is starting to fail as it is not a contactor and cannot take the constant opening and closing connections like a contactor can.
No worries about the compressor burning out when it's all iced up.
Now that’s some good water cooling
intermittent issue? you probably got water in it when you washed the unit, but again sometimes there is no way around it
New sub here. Confused with the talking head at the end. But first half interesting!
If you loose some voltage on contractors you don't have to disconnect everything: Just measure the voltage drop over each contactor. :)
You can get some weird feedback if you don't you never know what has been done to these units and someone may have bypassed something
@@nightmareinaction629 It's not meant for your decision which to replace, just to get an idea where to search.
Why did you look at the kitchen return when that was for the office as it says in the title?
The office ac feeds the back kitchen too and if you look closely there were two return grilles there one for the main kitchen ac and one for the kitchen/office ac
@@HVACRVIDEOS ah that explains why it was yukky inside.
Are you sure it wasn't a icemachine??
Nice video
Did you say "filters", or "filthers" ?
can you do a video on balancing the blower wheel.
Again, very good video. What is the reason behind cleaning up the wiring going to the economizer? I know it’s the right thing to do, but from a Business owning perspective why do you spend time cleaning up the wiring. Keep up the great work. We will get you to one million subs.
When you are the last person to put your hands on a customer's piece of equipment, you own it. If that wiring rubs out and causes a short it'll be on him to fix it, probably at no cost to the customer.
Good vid ...
Youre gonna have to sell shirts on your merch store that say "Holy Majoly"
The main ac in my house is low on freon and no one has r22 to add some. but luckily I have a portable ac in my room.
I found a 30lb on offerup just before the shortage hit.
It might be worth looking at replacing it, potentially. My home's old AC was an old R22 unit that had a serious leak (likely the condenser being used as a urinal by the dogs), and the cost to recharge it with R22 alone (not including a new condenser coil) was enough to consider replacement. Add in that it was undersized and couldn't actually effectively cool anyway on a warm day... new one works great!
You can have it swapped out with r438a. It works great. No oil change required. Many contractors don't want to do it because they make much more money selling you a new system. I do the whole swap out for around $300, depending on how much your system holds.
I quit stocking R-22. Most of my customers already have 410A so R-22 at 1,000.00 is not worth stocking to sell someone a pound or two. I'll still buy it if my commercial customers need it but they usually need several pounds when they have issues. I rarely see residential with R-22 anymore. I realize some areas may still use a lot of it and companies in those areas should have it.
The harvest cycle is not working
I wish l these units would have a reversing valve for service only atleast to defrost all these coils
Might as well all of cal should have heat pumps but contractors
Neglects cheap PM with new filters, in exchange they have to spend thousands for a service call 🤣🤣 logical
Iced up coilatitus!!!
3:57 looks like an attempt to place an entire airport on lockdown 🧐
Cleaned all the grease and dirt off. There was nothing under it...😜
Gas’n’go tech closed the service ticket at 2:37.
Another turd polished! That thing was junked hard.
Drinking game: take a shot everytime Chris puts nylog on something
This will be a sober year
Holy crap-cake, Batman... 😵
Nice Video Title
Chocolate milk shake, only crunchy
big picture diagnosis
How does the blower fan get that dirty with air filters in it
I’m a new subscriber