This video is brought to you by Sporland. Quality, integrity and tradition. Well, we got a call that the kitchen AC is not working. It's 87 in here when it's set for 70.

So let's get on the roof and see what we can figure out. My AC is right here. AC Number One: I'm just doing a walk around on the unit. Nothing is running at the moment.

so let's open up and have a look at the circuit board. What do you want to bet it's off on high pressure? It's been a while since we've changed these fan motors. Let's see. so One two three four four, one two three, three, one two three four one two three.

So error code: four and three. And if you go down here: high pressure lockout. High Pressure lockout. So if we go ahead and uh, reset it, you do reset and wait for the time delay.

I Think this guy should start up one of these days. I'll actually read the instructions on how to reset that board instead. I Just turned the power off so we're going to let it start up and see what happens. I'm going to predict that we're going to have a bad condenser fan motor.

This restaurant goes through them quite often. so wait for this guy to start up and see what happens. Um, it's anything funky. there.

don't see anything funky there. I Mean everything looks okay. Condensers not horrible. I Can see light through it, but it's a little dirty.

We'll definitely be rinsing some stuff off while we're up here today too. So we're just waiting for this guy to start up all right. I reset it and I ended up throwing some jumpers on there and I got my error code back again. So I had to think about this for a second and then I thought of an idea.

maybe this unit has manual reset high pressure controls and it does right here. We've got a manual reset that's not Factory that's after market I think I put that on to be honest with you. All right, it's reset now. but we're gonna have to reset the unit again because it went off on air.

So let's uh, power it down, then power back on and we'll have to wait for the delay. Let's give it a second. Think here we go. Come on over here and only one condenser fan motor is running so we'll have to open this up and see if it has voltage going to the fan motor.

I Went ahead and turned it off and uh, power's isolated I'm trying to spin the motor with my hand right now and it's locked up so condenser fan motor is completely locked up. I'm gonna go ahead and get the side of the unit taken off and we'll see what we got to do to get that motor out and get a replacement for it. I Went ahead and took the side off the unit to make my life easier. I carry a lot of the the tools that I use every day.

So I have two half inch wrenches. One of them is actually broken but it still serves as an open end wrench. Pulled the blade off I'm gonna change this guy. We got a OEM motor so we're gonna go ahead and replace that.

I've got a motor, fan, blade, and capacitor so we're gonna swap that out. Then we're gonna get water hoses up here, clean the condenser, clean all the condensers. Um, it's pushing over 100 degrees out here so we got to make sure these things are 100. Using the OEM motor gives you the ability to take advantage of their plug setup that they have here where it's just a Molex thing that plugs in.

but I highly suggest whenever you have these Molex plugs. Uh, York does this and Linux does this with these little Molex guys. you put a zip tie around them so this one I ran a zip tie through it just to make sure it doesn't vibrate out. Um and then we're gonna put the niche family on.

We tied up the ground so that way it's not going to hit anything. so looking good so far. When tightening the set screws on these motors, you want to make sure if your motor has two Flats the shaft you want to set screw going to each flap. Preferably you don't want to set screw going to the round of the shaft.

Now sometimes you have to, but the flat you're able to drive the set screw in and I highly suggest that you run it in. so you tighten it, you loosen it, you tighten it, you loosen it. Keep doing it every time you're running a Groove into the flat. So that way it's nice and good.

Okay, if you do that on the rounds, it is okay because sometimes you have to. but you have to understand that when there's a groove on the round, it's going to be harder and harder to get the motor and the blade off. So if you ever have one where there's a groove on the round and it's difficult, what you do is you lube it up with like a penetrating oil, then you if you can you push the blade down to where you can access in sand really good, then pull the blade up off of it if possible. So we're going to start assembling this and then we got to figure out a way to identify which capacitor is.

Wick I Ended up changing both capacitors. Uh, this was the one for the motor that I replaced and then this one was for the other motor but it was actually out of spec. It was right below. It was plus or minus or it was a minus five percent and we were at like six percent.

so went ahead and changed both capacitors. So at this point I think I could turn it on I Hope that nothing blows up. wait for the time delay to kick over now both of these motors are allowed and and other I'm running 2.6 so we're good on both. Motors Now something else that I noticed is that now that I got both Motors running right and they're both moving air like they should be, we still got to clean the condenser, but this compressor is not turning on compressor one and come up here.

that's still a high pressure cut out so we need to test this high pressure control right here to see if it's open so never just stop at the first problem. Yeah, condenser fan motor bad, but this high pressure control is bad because it's open and if the system's been off this Line's not hot. There's no reason for that pressure control to be open so we're gonna have to probably convert it like I did that one. I'll have to go to my van I think I might have a 410A high pressure cutout control I Have absolutely no idea if there's a Schrader under here.

just don't know. So what we're going to do is we're going to do what we did on that one. We're going to put a service tee I've got a service tee right here with the Schrader depressor. We're going to put the high pressure control on one side and a Schrader on the other side and then that way we can still access the discharge line.

for system pressures. So you gotta assemble it, put the Schrader in and then you twist this one on last because when you twist it on, it's going to depress the Schrader. It's not really something I can catch on film, but it's really not that big of a deal. Just have all your tools ready.

It's got to be damn near 100 up here. My phone is overheating I literally went and set it in the mixed air cabinet right there for 10 minutes while I was putting this high pressure control on. So we got the high pressure control installed. It's a manual reset.

We've got a Schrader right here to be able to access the discharge line connected it right there. So now we're good. Um, we're gonna go ahead and probe up on this and actually what I'm going to do is I'm actually going to turn it on and I'm going to let it run for a little bit, let it cool down the kitchen. I'm going to start washing the other condensers for the units that they didn't have a problem with I'll let this one cool down the kitchen.

then we'll wash this one. Then we'll probe up and check the rest of it to make sure everything's good. You know what's crazy is I just replaced a compressor on this like a week ago and I thoroughly clean the condenser and it's already plugged up again. It's just nuts how dusty and windy it is out here, so we'll make sure we wash all the refrigeration while we're up here.

All right. I Rinsed off all the other condensers, hit them with cleaner. This one right here is the last one. It's not horrible, but it's dirty so we're going to give it a quick clean, but we're just going to clean it from the outside.

In these micro channels are pretty easy. We need to shut off the power and we're going to be using Uh Refrigeration Technologies Yellow Venom Pack Okay, this yellow Venom pack right here is a micro Channel aluminum safe condenser coil cleaner, but it's concentrated so you have to mix it properly. Using their foam gun is ideal because it has the proper dilution ratios as opposed to other foam guns, so other foam guns will dispense the cleaner, but they use it too fast. This one is actually optimized and set up, so that way it uses the appropriate amount of cleaner.

So all that we're going to do is spray the cleaner on the condensing coil, let it sit for about five to ten minutes, and then go ahead and give it a rinse. So this has been sitting for a bit so it's time to go ahead and give it a rinse. Now we want to be careful because we don't want to soak the motors and the water will go through a micro Channel very easily so kind of go at a downward Angle Now this one wasn't too dirty, but in a perfect world you clean it from the inside out. This one wasn't too bad, but you can clearly see the water's nice and brown gray is coming out.

So we're going to give this guy a full rinse both sides and then we'll dry off the condenser. Always want to go ahead and rinse all the stuff you washed off away from the AC so that way it doesn't dry out and then just gets sucked right back up on the condenser. So this particular location I know my roof really well. They have a massive water leak over in the corner but there's not really much I can do so every time I come here.

they're like it's leaking water and I'm like call the roofer like every time I tell them. but anyways, it's got to be washed right. There's nothing else I can do so. um, we're gonna do that.

and then we're gonna get the air blow and we're gonna dry off the condenser. So these micro channels they're notorious for holding water and in weird circumstances. I've seen situations where we can trip the high head pressure control, especially out here when it's like 115 120 and these things are saturated. It's weird.

This is what I'm talking about my whole life. Every time it rains, it's just sitting here raining down. They're lucky this whole ceiling doesn't fall, all just dripping down Nice. All right.

This unit is, uh, really polishing a turd? It's not going to be I Don't think any much better than this. So Circuit two: we're running about 16 to 18 degrees of subcooling. I'm not really going to play with it too much. it's kind of bouncing around circuit One.

Give it a second, about 14 degrees sub cooling. As far as uh, the superheat is, you know, throttling moving back and forth as the Txvs are running. Um, go to Circuit Two Air flows kind of on point. 3000 Cfms temp splits a little bit low.

it's right there again. I Don't think it's going to get much better than this. Um, everything's kinda here. These units are really, really beat down.

So um, pretty much all this unit's gonna get. I Mean it's doing everything it can. it's running, it's a little hard away. They're going to be extremely happy now that we change the condenser fan motor.

put a new high pressure control. Uh, oftentimes like the reason why I'm not freaking out about the measurements really is because it's really about where you're putting your probes and I guarantee right in here where my return air probe is. It's probably a little, um, you know it could be moved. so let's try it.

let's see if it makes my airflow better. So if you move this down and put it more in the airflow there, I'm gonna move this back. let's see what that does for the uh. actually so yeah, I moved that air probe again.

We've got a 25 degree TD now and my target is 26 so we're right on the money. It's just about checking where your probes are really so cooling. That's what I expect. Again, it's using discharge pressure so it's going to be on the high side.

11 degrees super heat. Let's go to the first stage. Looks like the Super Eats kind of floating around subcoins about 16 degrees. Yeah, we're doing good.

This guy's doing everything that it can. You can't just assume because the app tells you this. You know you need to look and look at the probe. So I go over here to the toolbox and you know you can compare side by side.

So low pressures are pretty darn close. High Pressures are on point, suction line temps, liquid line temps. They're all within like a couple degrees of each other. So everything's doing everything it can.

105 degrees outside it's nice and warm. Static pressure is through the roof. Um, these units just run horrible static. So yeah, that's it.

This guy's doing everything that it can. We're going to, uh, get all my tools get off the roof because like I said, it's 105 out here and I don't want to be out here any longer. And I'm hungry for lunch so you know it's a crazy thing. This footage I found I was like going through my hard drive right? and this is from last year.

Yeah yeah, this is from uh May of last year of 2022. I I must have forgot about it. but I mean everything holds up I was watching it and it's like wow, it's kind of funny when I go back and I I look at old footage and I'm like oh wow, You know my thought process really hasn't changed much. It's still the same thought process that I go through.

So um, obviously we had an AC not working office AC and I found that the unit had a bad condenser fan motor. but not only did it have a bad condenser fan motor, it had a bad high pressure switch. It was a auto reset and it wouldn't reset. So uh, but something important to understand is that auto reset pressure controls.

they have to get to a certain differential before they reset right? so it you know it goes up to 600. PSI and then it opens right and then it has to drop. You know, a ridiculous amount before it'll actually reset. So that's why I mentioned in the video that you know this thing hasn't been running it.

There's no reason why it shouldn't have reset. Clearly something was going on inside there and as I was editing the footage, I realized that when I first reset it and got the unit to start up and found the bad condenser fan motor, it was still giving me the flash code I just didn't catch it. my camera caught it but I just didn't see it with my eyes that it was still tripped. So obviously once I replaced the condenser fan motor, that caused the problem more than likely.

then I turned it back on and I was like hey, this compressor's still not running and yeah, it was still tripped. You know, the other pressure control. Now another thing too. Uh, the compressors.

They sound ridiculously bad, right? but notice as they ran longer, they kind of calmed down and quieted down. Those are older Bristol compressors. First off, they're notorious for being really loud compressors, but they're still running I mean that AC Again, this is from last year that he sees still in Play No Compressors have been changed or anything. I mean they're just loud and noisy ones, right? That particular customer is actually changing two of their ACS but not this one.

Uh, I Give them a quote to replace two units and they said they found someone else cheaper. So all right, whatever. I'll be honest with you. I'm not too upset, but that was for two other units at the location that there wasn't any video footage on those.

But regardless, you never just stop at the first problem. Don't just change a fan motor and assume everything's gonna be okay. You know, big picture stuff here, right? We're here to solve the problem, not just the symptom at the same time with the customer's permission. I Went ahead and went through all their equipment, rinsed off all the condensers because this customer doesn't do routine maintenance with me, right? They have a filter changing company that comes around every once in a blue moon, but they're not really cleaning their stuff on a regular basis and if I didn't clean the other equipment I guarantee you I would have been back out a week or two later probably in the middle of the night because they had AC's not working you know and I don't have time to keep going back to these customers.

So I'm like hey, I'm here, you guys are two hours away from my shop. Is it okay If I go ahead and clean everything while I'm here, you know it'll push us up a little bit higher on the bill, but it'll save you guys travel fees back and all that good stuff. And of course they were like yeah, please do it Okay, so went ahead and took care of their other ACS rinsed them all off, cleaned the condensers and that unit was back up and running and all was well. I really appreciate you making it to the end of the video.

As usual, it's really awesome and it's really neat to see all the the feedback that I get from everybody right? Positive and negative. I'm always looking for for for ways to grow and I genuinely do get criticism from people that helps me to grow as a technician because I am incorrect sometimes right? I Don't always do everything by the book I don't always have all the right answers and I'm always looking to learn so you know if you guys have feedback. If you guys have advice for me things that you think could help me to grow as a technician, please give it to me. You can put it in the YouTube comments.

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