This video is brought to you by sportlin quality, integrity and tradition. The customer complaint today is that this unit is not cooling at all. So when i first walked up, the thing is vibrating like no tomorrow. The whole thing is just rattling really bad to the point that i wouldn't be the least bit surprised that this unit's out of refrigerant because of the vibration that was weird, i opened this thing up and the compressor tried to start sitting there, it's cold.

It's really weird all right: we need to get into the control section like you can even see the condenser fan. We're still moving a little bit, but it was weird because it tried to start and it was like it didn't, have good voltage or something it was really chattering. All right, um. The contact is really burnt.

It's probably hard for you guys to see that. But it's really burnt in there like it's been short cycling, but man. This thing is just really shaking it's not good. Now i know that the indoor blower assembly is the cause of the vibration, but i don't want to shut the unit down just yet.

If i don't have to, because i want to check a few things, i want to make sure that we're not not off on a safety limit. So i'm going to check between all uh x and c. We got nothing, okay, all right and then we're gon na go between r and c make sure we got a transformer is good and then we're gon na go between c and g. Obviously, we've got 24 volts to the indoor blower.

It's like coming yeah there. You go and then we're going to go see as in charlie are common to y1. We have no call for cooling. We have no call for second stage cooling, so we don't have a call for cooling here, um, so something's, going on whether or not the thermostat is clicking it on and off we'll go ahead and jump it out and make sure that we get a run here In a minute, but i can go ahead and shut it down now and we're going to investigate the indoor blower motor, but i wanted to figure out.

You know what was causing it to run. First, all right, we got an extremely loose belt, but if you notice the blower motor is moving silly carrier brackets, they they do this quite often where they get damaged. I don't see a crack yet, but it's just the integrity of the brackets gone. So we know it's gon na need a new motor bracket, possibly a new motor because sometimes it'll break the welds off to investigate that.

But i'm going to get a new belt on there. It doesn't look like there's anything stuck in the wheel but uh. It may be, you know, beyond repair, once i get a tighter belt on there, it might vibrate even worse, so we'll see see what happens when i turn it on. Actually, it's not as bad as all i'm surprised.

Okay, we're gon na put it back together. Uh we're gon na at least try to get it running. We know we got ta order that motor bracket. I went ahead and ran a jumper from r to y one and the contactor pulled in and then i think it tripped the breaker because it just kind of buzzed and then it went all quiet and the indoor blower motor shut off.

So i need to check the fuses uh check for direct shorts to ground and go from there. That is interesting, so let's check across the contactor 208 and then run on up here to this the other leg two away and then go from this leg to this leg to away so we still have three phase voltage um. I wonder if we blew the control fuse, let's see, let's just go right here and go from c or common to r and we've got no voltage, so we blew the control fuse. So i wonder if there's a problem with that contactor, i went ahead and turned off the disconnect verified.

There was no voltage and then came across this guy right here and we have an open, contactor, coil. So interesting all right, we're gon na go ahead and replace that guy. I went ahead and replaced the contactor and i didn't catch it on video, but i pushed in the contactor after i was done. The compressor started up no problem, so i went ahead and swapped out the fuse and jumped out the unit and it blew the fuse again.

So what i'm gon na do more than likely we've got an electrical short in here too. I don't know what caused it, which one came. First, uh we're gon na go ahead and pull the top off this unit, because these units are notorious for having rubbed out wires in the economizer going over the blower, and this is a small unit. So i can pop the top real quick when i get in here.

The economizer is not even hooked up. It's already been jumped out. Let's look over here and see if we have any rub out points yep, whether or not those are high voltage. I don't know, but we're just gon na eliminate the economizer from the picture and uh.

We might as well clean this unit, since we have the top off. That condenser is pretty dirty and i bet you it's pretty dirty down inside there on the split row too. So we'll go ahead and clean this unit up all right. I went ahead and yanked all the wires out pulled them all out here.

I already got rid of a bunch of them. A bunch of them are just nusense wires. It's really simple, actually, just pull them all back, find out. What's hooked up, one of them was going to common of the compressor lockout board.

It's not needed. That was just the common for the economizer module. The other one was coming out of y1 running through the economizer coming back and going into here. So all that i did was eliminated that and ran a jumper from y1 to the compressor, lockout module or clo board, and then what it does is.

It runs through the board and then goes into the pressure controls and then to the contactor. So that way, if a pressure control opens up, it locks out the voltage going to the contactor. So it's really not difficult to disconnect these things, really nothing to them. To be honest with you all right um, i went ahead and pulled a bunch of crap out of the drain.

Pan there's still some stuff down there. All these leaves and everything were in there go ahead and give this guy a rinse. It's actually not as bad. When i split it open not as bad as i thought it would be, because i look like it really hasn't ever been split before, but um i'll get some cleaner on there too, i mean it's coming out pretty clean down in there.

That's the tricky part is right in there, so what i'm gon na do is get all the big stuff out of here that big crap right there and then we'll get some cleaner on it and go from there. That's probably really dirty right there. All these leaves that have been down there for who knows how long weird all of a sudden it feels like hot water. Now it's cold now, because it was sitting out in the sun.

Let's go have a look at the other side. Actually, we need to give this evaporator a rinse too get some water in there get it draining the way the drain can kind of flush itself out we'll. Do it a couple times we'll put chemical on it too. Get it from this side looks like there's a leaf down in here.

Who knows how leaves are getting in here? Oh yeah, all right, we're gon na get some chemical on this guy now, just using my little hand sprayer today, it's not very bad, so don't see the need to get all the big guns out and just needs a little bit on there just to top her To uh get in there, let's first want to do that too. Pan you want to be careful on the evap, because this stuff will foam up so uh and then it'll be hard to clear the drain. So a little bit careful about that. But if i could just get it down in the drain pan that way it starts breaking apart, some of the mud and gunk that's down there, that'll be good, get it all over the copper too.

This is a safe, cleaner. This is just the yellow, hd cleaner. So it's not going to hurt anything, so it just kind of cleans and shines everything up, just letting the cleaner sit on there for a little bit and do its magic just about out on this one. Just let it work its way down into the drain.

Pan all right we're going to get a little bit on this evaporator see that drain pan is already foaming up and i barely put any on there. I got to be careful that stuff will overflow it's already overflowing see, but it's definitely coming out so we're gon na. Let it sit a little bit longer. The water will kind of help it just misting it on there.

Let it get in there and break anything down that it needs to break down and then uh we'll get started on this condenser right here so kind of the same, get it thing and wet. Let it rinse down, see it's coming out, nice and good, oh yeah! So now that we got a foamy mess, you kind of think i probably put a little too much on. There should have concentrated diluted it down a bit more. It took a lot of work, but i was able to get down in there, even though it doesn't look great.

I was able to get that drain. Pan completely cleared out, there's just some gunk stuck to the bottom of it and uh back in here. All the way back in there, nice and clean and the evaporator is about as clean as it's gon na get all the foam's gone, so i'm gon na start putting this unit back together. Let's see if this guy blows the fuse again, i did not have a normal automotive style fuse.

I was looking at one of the other units and i found a 10 amp someone's crazy. You don't ever put a bigger fuse in one of these units. It was just sitting as a spare, so uh yeah - i didn't - have another one, but i do have a glass fuse. Uh 5 amp glass fuse, and i have a little fuse holder right here, so i just threw that in there it's not the prettiest thing in the world, but it'll work.

You guys probably can't see that this transformer is not tapped. Right um, we have 208 volts, not 230.. I'm gon na switch that over real, quick, there's no voltage in here. So now it's tapped right all right fire.

This up see what happens indoor blowers running and i'm gon na jump out. The uh compressor right now, eventually shorting, let's see if this thing blows the fuse again. If it actually runs there, we go it's actually running like it should be didn't blow the fuse. I threw my smart probes on there because i had a feeling the dryer was plugged up because it was sweating on top of the dryer and what i did was i put my discharge probe on the bottom side of the dryer and it's 76 degrees, and then Liquid line temp on the top side of the dryer is 38 degrees, so we've got a plugged up dryer and we're running it's completely, restricting the refrigerant.

Well, we barely got any refrigerant three psi coming back, because that dryer plug solid can actually see this dryer because the top of it's all sweating and then the bottoms not so it's plugged. My concern, though, is that's an original oem dryer. This unit has mineral oil. In it, what would cause the dryer to plug up? I mean, i don't know, that's interesting.

Okay, uh from i was working on the kitchen they see today too. So i have my recovery machine and everything up here. So we're gon na recover the charge real, quick and change out that dryer all right, um, i'm gon na go get torches and start prepping that grab a dryer recovery, machine's running, so i'm weighing it as it's coming out. So i know how much gas i pulled out of the system too uh all right now i didn't have uh the right size dryer, but i wanted to go bigger anyways, but all i had was a half inch, so i had to bush it down, but it's Going to be longer so i have to make some stuff work, so we're going to kind of re-pipe a few things on this real, quick, all right.

First off we're gon na make a bend just like that. In fact, i think i can go a little bit more than a 90 and i think that'll actually help me. So if i go something like that, yeah that'll actually help me perfect. So then i'm gon na swage, this real, quick, okay, try not to burn myself.

Get all the big stuff out of there all right so now yeah that's perfect and then, if we 90 it right there, if i can get it in there, let's see if i can get this 90 close enough. Oh yeah butter, oh yeah! That's pretty! It's very pretty okay, so i got ta get that to slide on all right, that'll work, and then i need to find out where i need to have these guys. So this guy's gon na go like that man. I wish i could cut that.

I really should try to cut that a little bit. Let's see if this works, bingo told you i'd win all right, that's about them apples, and then we got to put that on there. Oh that busted, that's not good! Okay. So let's try see if that works.

There you go almost perfect man that'll work in like flint man, that's pretty all right now. The question is we need to braise this real quick. So it's that way it's done outside and we don't burn everything, because it's going to be a hard enough raised. Joint as it is so looks like a good, solid, braze joint, don't see no problems, there kind of cool off that dryer.

I didn't grab my heat blocking compound, so all right, this is going to be kind of tricky because on the bottom, it's kind of damaged, so i'm hoping i can get it on without burning everything up all right. I burnt the dryer a little bit, but it's okay. It's no big deal. So it's a 16 cubic inch dryer.

So it's an oversized dryer spoiling catch-all. Hopefully it catches whatever. I don't know what plugged this other one up. I'm concerned man.

This was an eight cubic inch dryer to cut this guy apart and see what was going on inside of it it's kind of heavy, so it's kind of scary, uh, we're gon na get the vacuum pump running on it right now and then we'll charge it back Up currently pulling the vacuum, we're just about done. I've just been cleaning the unit up, putting condenser fan motor in taking all my crap off the roof. Um you can see. That's pretty much all the crap that i washed out of that coil all that stuff and then over here all that stuff came out of there too right over there anyway.

So yeah we're just about ready to start it up, i'm just going to let the vacuum run for a little bit longer. It's currently at about 700 microns. So all right! It's that time, um zero! This guy out real, quick, all right! We're ready to charge this guy up. So what we're going to do is go ahead and open up this ball valve and we're going to go 9.5 pounds of refrigerant into the high side we're going to put new refrigerant in because i don't know what was wrong with the other stuff uh.

The micron gauge can take positive pressure, so i'm gon na go ahead and uh take it off now that we've got positive pressure in there and then i'll go ahead and put this guy right here. There we go so now we can see system pressures um, all right, we're just charging it up 9.5 pounds of refrigerant once we get there, we'll start it up and hope that there's no other issues well crap. Look at that! Startup weighed in the factory charge and everything and we're still running low suction pressure, low saturation temperature. I'm starting to wonder if, like the i don't know, is the condenser logged with oil there's no way that new dryer's plugged up already i'm gon na, let it run for a bit and see if it stabilizes out there's something going on here.

So it's not in the liquid dryer liquid line, filter dryer, because i had a 89 degree coming out of the condenser temperature and then i re-clamped it going into the metering device and it's 89 degrees too. So there's no pressure or temperature drop across the liquid line. Filter dryer as the system's running a little bit longer. My pressures are stabilized now, i'm kind of wondering if we're logged with oil, what i'm actually going to do is disconnect the condenser fan motor for a little while try to build up the system pressure and maybe remove that restriction whatever it is.

Maybe if it is oil, let's uh come on over here, see if we can remove this condenser fan motor wire, i'm gon na, let the pressures drive up, see if we can push anything through the system and then i'll turn it back on here in a minute. That's a good sign, it's running, good, okay, go ahead and turn it off, go ahead and put this guy back on here and we can go ahead and turn it back on all right, we're going to let it run for a little bit and see if how Will it react well we're still running low pressures, but at least we're above freezing now um they've definitely got a restriction in the metering device for sure. So i don't know what was plugging up the liquid line: filter dryer, whatever it was, it's restricting that metering device too um, i'm gon na. Let the unit run for a little bit longer, but this is another one that the customer they they told me.

They are not replacing this unit and to do whatever i have to do to get it operational. So, just like i did with that kitchen ac over there, i'm just polishing a turd doing the best. I can so we're gon na let this run for a bit. I'm gon na start cleaning up my stuff, i'm not really gon na.

Do too much more with this bad boy. They don't always end up easy. You don't always end up fixing all the problems in this situation. It was kind of one of those one thing after another right, you know.

In the end, the unit still has a restriction in it, and i kick myself in the butt because i saved that liquid line filter dryer. So i could cut it open and i threw it away without thinking about it. Kick myself in the butt, because i i wanted to cut that thing open, but i literally was editing down this video and i went out to my van to go get it so i can cut it open and i'm like. Oh no.

I remember handed it to someone and asking them to throw it away, not even thinking straight, but the unit still has a refer or has a restriction in it, though. Ironically, we had good btus delivered and we had good air flow and the unit was doing it had a good td, but it had a restricted metering device. So i basically told the customer hey the unit's operating as best as possible. I told them they're going to need to change the metering device and on a unit that age i i said, i really don't recommend changing the metering device.

It's a little five ton like let's just replace the unit um. They don't want to do that right now. So they are just going to let it run like this, and i told them i said: look you know i called the the the facilities department and just said this compressor is not going to last another summer. You know with um the super heat really high.

The way that it was with a low refrigerant, coming back, you know it's going gon na burn that compressor up. The compressor is gon na, take a dump, but it got them going. You know it's the best we could do. Some people have asked me.

You know how come i do all that stuff and then you know we find out. Something else is wrong. You know you can't assume that every job is going to be a disaster. You know in that situation i had to go through the troubleshooting steps and i went ahead and cleaned the unit up because i had the top off the unit.

So you know it's had i put the unit back together sure i would have noticed that it had a restriction and maybe i would have said you know what it's not worth cleaning it up, but that would have been a waste of time. What happens if there wasn't a restriction, and then i said, oh, you know what i got to pull it back apart to clean it like you know, so you just got to kind of do things in steps and you run into the problems you run into. I have a feeling that the compressor contactor died, because the unit was shutting on and off on, loss of charge switch. Now that unit doesn't have a low pressure control, but it has a loss of charge, switch on the liquid line and depending i'm thinking, yeah.

I i think it was after the dryer yeah, so eventually it would have shut off on the loss of charge, switch and then turned on, turned off turned on turned off, and i think that's what burned up the contactors got the unit back together, um it's operating As best as possible with what it is - and you know sometimes they can't be perfect repairs. You know it is what it is. I really really appreciate you guys making it to the end of this video. Do me a favor if you haven't already um, please consider subscribing to this channel.

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