THEY SAID THE WHOLE DINING ROOM WAS TOO HOT

real quick before this video starts I was going through doing a massive inventory on all my merchandise that I sell on my website hvacrvideos.com I actually found a bunch of merchandise that wasn't in our system so I added it to it some shirts different things like that we're still running low on hats so stay tuned the large extra large hats I think there's only a few left but I do have a big order coming in on those but if you're interested and if you've been looking for certain shirt sizes I added a few things into the system so check it out hvacrvideos.com and let's get on with the video this video is brought to you by sporland quality integrity and tradition well today we've got an AC that's not working right now they complaining their whole building's not working but we're in the process of checking the temperature differentials across the evaporators and so far all of them have pretty good TDS now we realize that's not a true way to test for proper operation but when you've got eight units you know you you're triaging kind of like trying to find the problem this one right here though only has like a 15 degree TD so this is a carrier package unit um what is the tonnage on this guy this is a 10 ton so let's open it up and see what's going on well when we open it up we've got a totally I've got Action Line coming all the way back to the compressor so let's go ahead and shut this guy down at the disconnect switch we'll pull this guy and have a look at that evaporator why is it iced up is the question the filters are fairly new don't see a problem there um what I'm going to do is get them pulled out so that way we can get this guy defrosted the evaporator doesn't look very dirty but yeah it's our Step at least half of it so we're gonna get the indoor blower motor turned on pulling outside air and get it to melt that ice really quick open up this electrical section and check this out this guy's all burnt up I wonder if it was like welded shut or something that's odd the rest of them don't look horrible you know what though is this an indoor blower motor no I think the Blower's over here I'll have to look and see I can't remember if we pulled this uh unit panel right here they have a legend down here and they tell you that's compressor too so compressor one indoor fan contactor compressor 2 is the one with the totally burnt up contactor so I disconnected both compressors right here sorry about that glare disconnected both compressor wires turned it back on the indoor fans running and put this panel back on and then uh we're now drawing air through here and it'll melt it we got to make sure it doesn't run down in the ducts and to make this go faster I'll go ahead and pull this P-trap off actually no it needs it so yeah we just got to make sure that it's draining all right I went ahead and replaced all of the contactors that was the one that was all burnt up this one right here I think it's all trashed that's the second stage I label them all then there's the first stage and then there's the indoor blower motor contactor so we changed all of them now we don't know what caused it to ice up though so we just had to do that because they were all worn out and then now we're gonna continue on with our troubleshooting and try to figure out what happened here well this first stage compressor I just turned it on is vibrating so bad that it's causing my probes to leak it's going to cause a leak like a refrigerant leak soon um interesting how bad it's vibrating all right well we got all stages running contactors are good I'm gonna put the panel on and we're going to check the pressures and everything all right so first stage has got really low suction pressure 24 PSI and uh um we have decent head pressure 30 degrees of sub cooling I bet you we got a restricted filter dryer all right let's check second stage second stage is looking a lot better interesting huh all right well let's start checking diagnosing what's going on obviously sub cooling is really high on second stage two but I'm just looking at that operation of that 20-something PSI suction pressure 28 PSI suction pressure on this guy that's a problem for sure so if we look at liquid line temperature for the first compressor it's right at 81 degrees second compressor is at 93 let's check the other side of the dryer for the 81 degrees so the either I move the liquid line temperature and it's 93 on the other side so 93 and it's coming out 81. so we have a restricted filter dryer for the first stage and the first stage compressor is vibrating really bad so here's the liquid Inlet and then I was on the top getting the liquid Outlet so yeah we've got a restricted dryer on that first stage for sure so this compressor's got a nasty vibration the liquid line dryer is plugged up we have to start by doing that I'm not going to put a car allowed on even if you can get these anymore I'm going to put in a Copeland so what I did was on the Copa mobile app I just inputted the compressor and it gave me the cross reference right here tells you everything make sure that it all mechanically performance wise looks like the Copeland is a one percent increase in capacity yeah so all right um so I need to call around and see if I can find this compressor all right I've got a technician going to get the compressor um it's actually open that gas ballast vacuuming down the recovery cylinder because it had pressure in it nitrogen pressure because it was brand new we're going to try to utilize this gas we need to reuse it so uh we're gonna recover that change the dryer compressor and then go from there now this compressor is vibrating paint is Rusted off the top you know there's a possibility that the plugged up dryer could be causing something but I've never seen a vibration that bad just from a plugged up dryer plus the fact that the paint is completely rusted off I'm going to trust my gut and say that there's something wrong within that compressor I'm surprised that lasted this long anyways these car allows they usually leaked out of the weld points on these things pretty often so that's where we're at we're just uh waiting for this we already got the contactors changed out I'll start getting the dryer sanded up and everything it's really hot in the building so I decided to go ahead and uh turn on the second stage as long as I can so I'm running it right now so I put the panel back on we're getting ready to turn the recovery machine on I just put the vapor into there all the vapor that I could get out of it and at this point we're going to go ahead and everything's open go ahead and turn this guy on let it start pumping the refrigerant into the tank I got it to pull down to about 400 microns and it held pretty good so we left it at that and that's it we're just gonna wait for this guy to recover I don't know how much gas is going to be in here or not we'll have to see um this guy has the correct charge in it so that's cool 9.2 pounds we're just about done um yeah it's just got some leftover Vapor so we'll let it run for a few more minutes but uh the full charge was 9.6 pounds so we pulled out 9.2 I mean that's pretty darn good and we still got a purge so we'll get some more when we purge it from the machine into the tank so that's a plus we know we're not low on gas so I turned it off and then put it into self-purge and turned it back on and it basically got as much gas out of the machine as possible we'll get ourselves up to 9.5 pounds recovered so I'm a happy camper with that I'm gonna go ahead and shut off the unit now it's been running for about a half an hour they got something out of it so we've still got about two PSI residual pressure in there um we'll start changing the dryer I'm still waiting for my technician to bring me the compressor but I'm gonna hurry up because of course they just sat a party at 40 in this room so they're like oh what are we doing like I don't know do what you gotta do I mean you want me to do it today or not like I can leave half the AC running or I can get the entire AC running today you tell me and they decided to let me just do the whole thing so got some nitrogen flowing got a new dryer I'm gonna go back in with a bigger dryer we'll put in a 16 cubic inch it's gonna be a little tricky but I'm gonna get that replaced real quick and just leave the compressor in place until my other technician is at least on his way but I'll get the dryer change first that way the nitrogen can actually flow through everything so on the side of the spoiling catch-all box it tells you for air conditioning field replacement that's very important field replacement because oftentimes you'll see smaller than normal dryers than what it says on the box for factory conditions because they don't really have a lot of contamination cleanup worries when it's a factory new install but after the fact you typically want to go up in size if you know you can just be careful though don't just always just blindly upsize them but tells you on the side it can handle up to five tons so we're gonna go with the 16 cubic inch so it's a 16-3 that means 3 8 line sizes and it's an s meaning sweat sometimes purging with nitrogen or flowing nitrogen while you're doing this can cause a lot of smoke but also trapped oil can be burning at the same time too so there was a big puff of smoke that came out the top of the AC and it's still kind of smoking but I'm just blowing Nitro through still I'm going to try my best to get the new dryer installed and then we'll sweat it back in got the dryer changed out just got to fix the strap make it a little bit tighter just had to get a longer screw I protected it as best as possible with the Viper wet rag heat blocking compound you can see I still got a little bit I got to get off the top but it did a good job of protecting the dryer so the paint doesn't completely rot off my technician should be back any minute with this compressor so hopefully we'll get this guy pulled out here pretty quick all right just got the compressor on sweat looks like there's a little bit of oil dripping out so we're gonna have to do some backwards purging getting some stuff out of the evaporator let's make sure this is 208 three phase it is it's a zr57 that's what the Copa mobile app called for so we should be good I'm just going to do some backwards purging to get that oil out of that evap real quick okay I know I'm goober in that solder on there but it's okay it'll flow around thank you okay and I put a liquid line port for sub cooling right here we also use that to purge the system this Rosebud is way too hot for this 3 8 but fun not really Heating in the direction you want it to go because we've got a brass fitting that we don't want to overheat so you're kind of having to do a little bit of torch work there to make sure everything's good now I'm just going to inspect everything put some new coremax fittings in there then we should be good all right we are purging in on the high side or pressurizing on the high side it came back on the low side really quick so I'm hoping that we don't have any restrictions in there we're going to do a pressure test so I got it on the tightness test on the app uh we're looking pretty good we'll start wiring it up once we get the tightness test running but at least now we have a sub cooling Port too because these carriers don't have subcoin it's pretty safe to say on these uh fixed orifice metering devices these ones have actuator metering devices they have about a 35 PSI pressure drop from the high side to the liquid line so if you don't have a liquid access port you can kind of do the math and find the saturation temps I don't know what the max pressure is on this one but I probably don't want to go any higher than 145 probably need to go lower than that let's see Factory test pressure is 150 psi so for the low side so we'll definitely not go above 150 psi so we'll let it stabilize out I'll put a little bit more in there real quick we'll let it stabilize out then we'll do a pressure test or a standing pressure test by turning a timer on so what you want to do is shut off this guy and then open the high and the low and then just let it sit make sure all your hose connections are nice and tight make sure this is tight I'm not putting undue pressure on my hoses because there's a lot of pressure coming from that and then we just open this up and then open this up and let it sit for a few minutes and then we hit start on the test you want to let it equalize out make sure that you know there's not changes in temperature and stuff that are going to cause changes in pressure because this is nitrogen and people think that it doesn't change pressure but it does with temperature so just let it sit for a few minutes all right the pressure temperature or the pressure test has been running for 14 minutes we've changed zero PSI I'm going to call that good we're going to hook up the vacuum pump now pretty darn hot out here today I haven't gotten a thermometer out here but it's probably right around 100. cool thing while I'm doing this I can actually see light through the condenser so that's good we know that's clean dryers installed compressor's installed I need to do the wiring right now got the vacuum pump running so far we're looking good it's running I've got the blue back opened up we're at about 1700 microns you can see it on there 1700 microns I've got the gas belt it's wide open at the moment I'll get ready to shut it in a minute it's doing pretty good we are currently below the Decay Target so we're at 655 microns we still got to go lower it's currently about 110 degrees in the shade so yeah it's pretty warm today but I've been trying to keep moving um taking stuff back that I'm done with and you know trying to stay efficient as possible uh I have another guy here helping me he went and took lunch I've got a filter dryer on the recovery tank because we're going to filter the refrigerant as we're charging the system so I have it on the liquid Port very important factor here I got a lot of people asking me every tank like can change okay blue and red mean nothing on recovery tanks you have to look at the writing okay manufacturers of different tanks they do different you know color schemes or whatever so red is not always Liquid Blue is not always liquid it changes from time to time so we're going to charge from the liquid Port though with R22 back into the system and then I have some more because it's going to be you know I'm probably going to be basically have a pound or so stuck in that tank maybe half a pound so I've got that to make up the difference regular R22 so yeah we're just waiting for this uh vacuum it's almost there we're at 6 38 so just hurry up and wait I did forget to mention I put new core Max fittings in here anytime I open up a system I put new cormax fittings and then I have my Appian Schrader core depressors which are perfect for the core Max fittings so they have a mechanical fitting right here you depress the schraders you can use them on regular straighters like this one or you can use them on the cormax fittings the only advice I'll give you is do not bury them all the way down do not twist them all the way down you just break the um the the you know the Rubber seal on the coremax fitting and that's it because if you jam them all the way down and tighten these fittings the coremax fittings will get stuck and that's just a flaw in the coremax fitting so but yeah those things are really awesome you can pick them up at truetechtools.com if you're interested uh you use my offer code big picture one word you'll get a eight percent discount on majority of the items at checkout there's a few things it doesn't apply to but when you do that I get a small commission so it's a great way to help support the channel so we made it below 500 and I have it in Decay now so we're letting the blue vac take over and it'll give me a pass fail in here in a few minutes and it uses an algorithm so it doesn't make you wait too too long all right we passed our Decay test so the cool thing is when you use these valves right here you can actually shut it off without breaking the vacuum so we're going to go ahead and uh open that guy open that guy I purged all the way up so that's why you're hearing gas right there this is open we have a dryer facing out so we can charge everything's closed go ahead and open this and then we're going to go ahead and add refrigerant dumping it into the high side get it to take as much gas as it can again filtering as it's going in and then we'll make up the difference with that drum R22 right there all right we've got about seven pounds of gas in this guy we need to bump start it to see if this compressor is going in the right direction we're gonna go ahead and turn on the power and I'm just gonna bump it and it sounds good so compressor is going in the right direction I'm going to go ahead and jump it out real quick get both stages running and then we'll finish charging it I mean it's not looking horrible it's not pulling below freezing you know and it's only been running for a minute but we got to finish charging it so I'm just dumping refrigerant into the low side we're currently at about 7.9 pounds and we got to get to 9.6 but I only pulled out like 9.4 so we're getting there but so far it's looking pretty good all right we've been running for I don't know 25 minutes or so super heat looks good I wonder what the target is I need to take my gloves off um let's see Target is five degrees we're at 3.7 okay we're not gonna I weighed in the factory charge so I'm not going to take any gas out um sub cooling that's a true subcoin 15 degrees that's not bad uh yeah I don't see a problem with that let's go to Circuit two circuit two is running High head pressure subcoins 30 degrees right now super 8's 24. yeah 41 degrees saturation that's interesting okay let's scroll over temperature splits 22 degrees that's not too bad airflow 3600 cfms running about 90 000 BTUs we should be running about ninety eight thousand I ended up moving the return air temperature sensor the cyclometer and it's doing much better it's kind of bouncing around right now but I ended up moving it because the the top of the air handler cabinet in there it actually doesn't have very much insulation and there's a significant temperature difference so that made a difference there but we're still kind of bouncing around subcooling there's something wrong I think my temperature clamps messed up well that's it for this one that's all we're gonna do right now um I still want to investigate that head pressure like I said I'm going to talk to the customer about recovering that charge but we can't do it today so that's it on this one sometimes you gotta use your gut and you got to just kind of look at everything okay in this situation the compressor was vibrating I didn't like it it was it was hard for the camera to pick it up but there was just this vibration coming that was gonna eventually crack something right a discharge line or something but I also think you know there's a possibility that that vibration could have been because of the Restriction something could have been going on but judging by the look at the compressor the head now I don't think I phrased it correctly when I said the compressor head is rusted out that's not rusted out uh it is but it's caused from overheating of the compressor melting the paint off the top of the compressor right and then it starts to rust so when you start to see that on compressors that the paint is completely melted off that typically means that that thing was running in a really bad situation for a very long time causing the system to overheat and who knows what was going on within that compressor okay so I just made a judgment call talk to the customer said hey here's the deal I really think we should change this compressor it's in bad shape and they approved it okay they said yeah no problem let's they trust me they said if I think we should do it they said go ahead so went ahead and changed the restricted dryer and the compressor started it back up crossed my fingers that there wasn't a restriction in the fixed orifice metering device there wasn't I was able to reuse the refrigerant okay I had a brand new recovery cylinder vacuumed it down and then I used a filter dryer to charge the refrigerant back into the system so if there was any contaminants in that refrigerant the hope is is that the filter dryer is going to catch them okay so I do like that I use the sporland uh male female o32 I think uh filter dryers and they make two different directions where it can go you know either way it can change directions and you can get the different ones I usually keep a few in my van because they're really nice when you're recovering gas and you want to protect your recovery machine or if you're charging gas and you want to clean the gas as it's going back in the system okay so I went ahead and did that you know did followed the best practices that I could went ahead and oversized the filter dryer from an eight cubic inch to a 16 cubic inch and then evaluated everything once we got it going on of course pulled a good vacuum tried to braise with nitrogen the entire time of which I did on this one and everything seemed to be okay so this was a textbook one this this unit was probably from 2004 um you know they they were able to keep it going and maybe they'll get you know the rest of this summer out of it and who knows what'll happen next year you know I still have a lot of customers that have a lot of R22 equipment and they still just want to keep fixing it so I keep giving them prices and the prices are going through the roof and they keep approving the quotes I always recommend hey you know it's probably a good idea to change these units but you know that sometimes goes to deaf ears I just give them the information and let them make the decisions okay I'm not a perfect technician I just try my best I really appreciate you guys making it to the end of the video thank you so very much for all the feedback the comments um if you guys are interested in supporting the channel the easiest way to support this channel is literally watch the videos from beginning to end that really is the easiest way couple other ways to do so go to my website hvacrvideos.com we actually uh I said it at the beginning and I'll say it again we actually just um you know updated some stock because we were out of stock on a lot of items and we went through and we inventoried everything and I actually found a lot of inventory that wasn't in the system so I threw a bunch of t-shirts and different things in stock we're still running low on some of the hats but they'll be uh we placed a big order for a lot of new stuff so stay tuned on that so hvacrvideos.com if you're interested in purchasing a new merch if you're interested in purchasing any tools or any of the tools that you see me using in my videos what you can do is you can go to truetechtools.com okay they're an online tool website uh very very good people very good customer service uh check out their website if you like their pricing if you like what they have you know on checkout if you guys put my offer code big picture one word you'll get an eight percent discount on majority of the items they have on their website now there's a few things that discount doesn't apply to but almost everything on the website it does when you use that you get an eight percent discount I get a small commission from that so great way to help support the channel also if you want to support the channel PayPal patreon YouTube channel memberships there's links in the show notes of this video on how to do all of those thank you so very much I really do appreciate you and we will catch you on the next one okay

Channel: HVACR VIDEOS

Views: 39,441

Keywords: THEY SAID THE WHOLE DINING ROOM WAS TOO HOT, air conditioner, air conditioning, HVACR VIDEOS, carrier package unit troubleshooting, carrier package unit wiring diagram, carrier package unit not heating, carrier package unit no heat, carrier package unit not cooling, carrier package unit blower motor, carrier package unit tonnage, carrier package unit thermostat wiring diagram, carrier package unit heat exchanger replacement, HURRY IT'S TOO HOT IN THE DINING ROOM

Id: CMf54Ni0Peo

Length: 26min 25sec (1585 seconds)

Published: Sun Sep 03 2023