 we got a walk-in freezer here we just got to and they said it hadn't ran all morning they got some ice cream and stuff in here and it's soft big time even the french fries are getting there it appears to me we've like failed into defrost of some sort you can see the water and stuff that accumulated from previous defrost the back of the coil here hard to say I can't see of course we've got everything piled underneath of it as usual now they do have a door switch and I can hear a click going on which kind of makes me think it's the solenoid kind of hard to tell from right here I'm not hearing any refrigerant moving I will have to make sure that door shut because I think when I got here it was barely all the way shut wow somebody actually uses their old thinker muscle check that out that's unusual amazing all right so we found the panel and those are the numbers that they had that's not there they moved it somewhere now NEMI 25 27 and 29 is there a panel called NEMI NEMI for them to have moved that they would have had to pull a new wire or change something you would figure maybe that can do it there look at that NEMI one see just got to use your finger monogger there we go what's kitchen cooler now the freezer 25 27 29 25 27 29 it's not off and it seems to be engaged they're off and back on all right we got it so we can get in to the building now because it's uh got to be kept secured of course nothing like a little ice and let's see if we can find this thing I don't know if that's the little lone ranger there or if that is over there that looks more like a cooler over there it's kind of small no label hmm shut off soon as I pulled the knob there all right let's see if we can dig into this thing pretty sure this is it because I don't know to me people it's got my marker and that sure looks like my marker saying it's r22 that it is an r22 txv so this definitely was me it's been a while since I've been here I can't remember I thought it was low on charge back then or something I don't remember that's not tripped got a little good injection that's coming in through that solenoid there I would reckon that we've got an issue with the low pressure switch cutting out welcome to the wiring mess okay so we do have a headmaster control there defrost heater contactor that almost looks like my writing I love it when people do stupid crap like this here's the problem with trying to be energy efficient like people are trying to do here see what they've done is they have decided to make the defrost only during you know working hours problem is clock gets out of whack next thing you know you're doing defrost in the middle of rush hour instead of whatever and you're better off being equal I think it's just not a good idea my personal opinion I'm 1142 right now and it looks like we're at about 1230 so we're all gone close so it might be tracking 50 minute defrost seems like an awfully long time hard to say whether it's got defrost termination down there or not looks like fuses have been an issue in the past because we've got multiple different fuses here let's check that puppy there 15 amp let's see if it's any good all right we are good on the fuse checked voltage we've got voltage on l1 and in so we had 200 and some volts on that checking amp draw on one nothing on that one we have another leg there we can jump and check uh power is coming out on four which we ain't got nothing on that let's go ahead and rotate on again I've kicked it in there defrost heater down here does not look like it kicked on yet let's see this thing will pop down I think we are pulling now in on our defrost heater six amps six amps six amps so it is going into a defrost which is interesting let's for giggles watch and see if this thing is actually tracking time because I have a feeling it may not be but that don't explain why the fans weren't running because we need to get that melted off which I'm not going to probably get everything we need melted anyway but let's see what we can do here well it's been just a little bit and you can see there the blue mark is moved so we're tracking time we're still pulling six amps on that defrost heater I have a feeling we've got maybe a refrigeration issue it's not coming up high enough pressure to make the compressor run still doesn't really explain why the coil might be froze yet unless it's just not running long enough and short cycling I'm not sure yet on that part I can explain why it's warm but far as frost up unless it's just got long freaking defrost in between type deal that's kind of hard to say we're going to watch this thing for a while we want to go downstairs and see make sure it's starting to melt see what kind of melting it actually is doing we'll definitely get a gauge on that suction side today's one of the coldest days so far this year one of the problems you get these low pressure switches get out of whack when they get you know 20 years old they just don't come on like they should originally it looks like the cut in was 15 and cut out was zero temp controlled by statin walk-in unit 2d frost 4 a.m and 4 p.m 50 minutes fail safe so that means it must have a termination switch and look at that unit started July of 94 so about two months after I graduated high school lovely yep it's just like brand new a while we're up here we can get a good view on that sight glass there on the oil you can see we'll give it the wiggle and you should be able to see the oil wiggle in there okay so we're back down here and I can hear it ticking from this side looks like we've completely de-iced and it really hasn't been that long what that's telling me fans I push push push button over here push the button so push the button over there and it doesn't click so obviously it was trying to run and the fans weren't running so it just dropped in pressure like it will win the fans ain't running it caused it to freeze up because fans never came on I think we got us a bad fan time delay it's probably a fan time delay termination switch and bands it melted right off I don't think it's such a defrost issue as much as it is a fan delay issue chances are we've got fan switch that's not working correctly I'm going to see if we can climb up there and get to it it's about guarantee that's what's going on all right so we've got our defrost time delay here you can see it right there's where it's at come up to here right there it is it's located right on that right there you can see and that's kind of scary I don't want to wiggle it too much because I'll get a short but you can see right there there is a wire that is going to short out if I wiggle it too much and that's not a good idea you know so we're going to be definitely changing that that comes over here to x also comes down and goes to m and blue comes down here to n so we're going to go ahead and get that replaced for sure we can unplug it from down here without having to go up on the rough to do it but definitely it's failing the one I've got is not going to mount there but I'm going to go ahead and mount it probably to the sheet metal and we should be good there really is no other good place to mount it at but it appears to me what we've got is a defrost fan delay time delay because both things are kind of jacked the purpose of that right there is to terminate the defrost when it's finished so that it doesn't go the full 50 minutes also is to wait until it's below usually about 32 degrees before it brings on the fans obviously the fans weren't coming on which is why it was all froze up if you look at the back or perfectly clean and clear actually in really good shape this right here looks like it's a 94 also all right so I've got a new one here I got today's date on it we're good to go just got to go in here and put this thing on real quick this one here it's pretty universal but this is what we use on most of our bones as it is or opens at 55 and closes at 35 so there we go let's get in here and get this going I've got it mounted real tight right up against the metal the other one was mounted up there since we're off to the side you're gonna lose a little bit of sensing so I mounted one down lower that's as low as I can go without you know hitting something I use really short self tapping Phillips screws that way it doesn't go into a coil which there is no coils on the southern side there's no heater element you can see the screws I can get it to focus there's one screw head and there's the other you can't quite get it but you'd be hearing hissing if not I unplugged one at a time so now we just gotta get these back on there I've got it on there and as soon as I got everything hooked up which I do not recommend doing this live like I did but I was very very careful to make sure that my leads did not touch anything you can hear the refrigerant screaming through this thing which those lines are hot and out there we go they're really cold here not as cold over here by the heaters but it's definitely getting cold pretty quick yeah and that's going to transfer that cold onto that plate so it's going to come down it obviously terminated that heater and it should kick on here in a minute like I said that right here is definitely definitely an issue your in which is your common wire going and switching between the fan or it's going to switch to x to terminate x to terminate click so drop on temperature it closes black closes goes to m which is motor fans and when it gets too warm it rises closes hits x with that black wire being your problem wire there like I say and you can see that's that's not a good sign so we definitely are on the right roll here way I hear that refrigerant flying through there really nice and quick right now you can definitely see the cold coming out of it the heater elements I believe they feel hot still just in case we do have to switch it back to the other type of control I'm leaving this in there but we're going to go up there on the rough to make sure everything's disconnected as far as in disengage the contact heaters which it has to because it has an interlock just make sure all these wires aren't touching on the heater elements like a couple of them are about ready to so we'll get a couple of those fixed up there with a couple of wire ties and then let's get up on a rough I've heard it kick on a couple of times while I was down there on and off on and off it's still in freaking defrost so it didn't even terminate like it was supposed to that's nice so the termination don't work right that's probably not wired right and you can see this total flipping mess here unless I don't have it wired right down there there we kicked it out defrost let's see how it runs let's check our termination switch see if we got power on that see if we got power on x and in all right so we're just going to ignore the fact that it doesn't terminate like it should all in this wiring is a mess it didn't want to come on it is now I wanted to check this but I didn't get down here quick enough the pressure switch just barely makes it shuts off about negative one and comes up to two thousand don't hold well on this if I remember correctly yeah this is no surprise but we just came on let's see how things go here may have to give it a little bit of refrigerant definitely have issues when it's cold like this it may fill up here in a second that's not really bypassing much you can feel the hot hot gas coming through here but it's not really bypassing much there we just got a full site last now they know this thing needs replaced it's on r22 it's been babied along forever but unfortunately no one wants to update things proactively I gotta do some more investigate in here on electrical I don't you can see what we've got here it's been hodgepodge did and everything else it's just a total flipping mess look we're pumping down looks like you see that found a zero psi on suction so I don't know if that thing is not calling it's calling so why is my suction so flipping low yeah that's not good you know what I'm saying it's supposed to be letting through you can see it turn turning there I gotta get a high side gauge on there see where our high side's at I threw a pound of refrigerant in it as you can see it's not shutting off negative five we're running 155 on the head pressure that's coming out after the filter dryer after the solenoid so we're getting pressure down to the txv but it's not coming back up it appears to me the txv is malfunctioning and just not letting it come back up it's I just find it hard to believe all these things happen at once but you know things accumulate at times why it's not shutting off my other gauge actually showed it shutting off around zero maybe a little negative kind of not really impressed with that I did bleed the gauges out ahead of time so I didn't suck any air in we've got we've got some issues here what I'm gonna do is go down there and jump that fan so that it runs find it hard to believe we've got all these issues I mean the box is warm or an extremely cold day you know it could be you know obviously the switch hasn't closed 35 we're right now ballpark where it should be at in theory it should have closed that suction will come up if the fan was running I don't really want to change txv unless we have to unless there's truly a problem with it so I'm gonna go down there and jump that and see what we get I went through and double checked a few things because I never can remember what wires wet so I keep a picture of schematics and this is the schematic for the one we're working on I pulled up the schematic of a newer current one so I knew what was what blacks fan browns x and ours in which is kind of your common whereas here blue was and red here went to your x so x is brown here so I kind of had that wrong now that I jumped it with the jumper right there and it didn't run the fan I have a feeling with all these little fuses up there one of them is blown because we had one of those fan wires burnt like we did so let's go up there and see what we got I about guarantee we got a fan wire or a fan fuse that's blown also you can see that it's feeding really well through that is really cold right here so there's no reason why it shouldn't be calling on its own so let's go up there and double check that and guess what right here it's labeled evap but you can see it's kind of scary the way they got this it's all kind of him hogged 213 so that fuses open let's go ahead and make sure everything's dead kind of make sure that it's okay to pull that out get some stray voltages there see what we got there on that one yeah so let's go ahead and pull that out of there and get that replaced there's one actually over here to the side that's a 15 that's all looks like 14 gauge or better so might be able to swap it with that one there if it's still good they're just using that as a dummy terminal says main but it's not a main no more save me from going and finding another fuse but you can take a sit in the beginning you can tell they've had several different fuses replaced over the years the uh that's a 15 that's a 15 so yeah let's get that yanked out of there I got my fuse puller in my nicer bag so we're just gonna cheek so we're not going to keep that fuse anyway see what they had in there before 15 amps so good let's go ahead and get that other one out of there we got it in there these are those ones that have that little itty bitty piece there at the top or just gets the very tip top of it which I don't even know if I've got those with that little thing on it or not so let's go ahead and kick that on see if we can get the meter it's only downside of that magnets that magnets grab hold of everything see all our amp is amp girl is now that one there 2.5 amps sounds about like uh the evaporator fans so we're good there this fan should be running I bet uh that might help out our uh defrost termination now huh because that's the power leg going down to it I wasn't getting any power back up so everything should be Jimmy ding ding ding dangle here so let's throw it into a defrost here real quick and see if it kicks immediately out boom it kicked in but I don't know if I heard it kick out or not you know see this thing pump down or not yeah that's not really what I wanted as you can see it went all the way down to negative five and back up to zero what happens is you screw with that and you're gonna have problems with it not pumping down all the way and it's going to short cycle on on off on and off the compressor valves are starting to go out or we've got leaking going through the solenoids unfortunately these are the little things as time goes on you're going to learn to have to ignore just things aren't ever going to be perfect and uh it's working so that's all they care about so let's just go ahead and watch it for a minute it should kick out of defrost pretty quick I'm feeling a little bit uh in a hurry to get done here because we've got things going on we're going to jump in to x make sure it kicks out so let's go ahead and kill power real quick let's go ahead and do it from here to there flip it on it should kick right out which that's it yeah see it didn't click when I rotated it so it's done let's go ahead and shut that back off don't want to short nothing out when I pull it off it's three phase it ain't great on it but it'll work I hate that because we're coming real close up on a defrost here right away and we're not going to need it so we're just going to go ahead and skip it let's go through this defrost kick out of it there we go let's move this back up to 40 I'm going to go up to 45 because they had it at 50 before and now let's go ahead and watch this and see if we can get those fans running like it should be suction pressure looks a lot better there don't it fans make a difference imagine that right that's why I'm glad I didn't add very much I only added a pound which isn't going to hurt anything I'm about guarantee you with all the little flare fittings and stuff that we got on this thing it's probably leaked that much easily out let's check that fuse again 2.4 so we are running those fans down there obviously we could notate that there on the panel so that we have that for later there we go so let's go ahead and watch this for a touch let's see how our sight glass looks which looks to me like we're nice and solid there let's see how we're bypassing we got warmth coming in the top not so much on the other side we'd have to put a clamp on to most likely feel the difference because even though that is letting hot gas through on the headmaster control here it's not like it's 100% bypass it's a metered amount pressure doesn't take a lot pressure doesn't mean capacity so to get the pressure up we just got to get you know a meter to mount coming through there to get the pressure up still got that cold liquid coming through on the other side out of the evaporator with our head pressure up there around 160-ish area it seems to be about accurate for what we got like I said what we had here the suction pressure was super low because the fan wasn't running I should have caught that a little quicker especially bands that had a little bit of a brown mark there but we're all human and we all kind of miss things okay boys and girls we got it so dropping in temperature in here so anyhow guys if you enjoyed the video and you want to see more like it make sure you hit the thumbs up button check me out on instagram if you want to see more videos like this hit the link that I've got at the top there for a list of other refrigeration videos or there's plenty of other playlists you guys can check out until next time we will catch you guys on the next one later