Service calling a beer walkin like it's all my stuff over here to this thermostat, get the cadets here to shut up my condensing unit right here. As you can see, we've got ice going to the compressor, so what I'm gon na do is just shut off the condensing unit right now. Let the coil defrost law and just check and everything else out. I'm gon na look at the defrost clock and all that good stuff.

So this is an older unit. It's got an original compressor, I think from 2003 it's r22, I'm just kind of visually, inspecting everything. I'm noticing that the defrost clock was very hard to turn and it also says the wrong time. It's like 8:30.

In the morning it says like 9, 8, 9 p.m. so more than likely. We're gon na have a problem with the defrost clock, but I have a feeling from the way that it was frozen up. It wasn't the whole coil, it was only half of the coil.

I bet you anything. We're gon na be low on charge. Also so I'm gon na get all my tools, we're gon na get the evaporator coil defrosted and then once we do that we'll diagnose from there. So I shut the fans off just so.

I can talk real quick, see how we have ice forming on the inside of that evaporator, but it's not all the way, see how it's not going down to the bottom. So I have to coil that to me is an indication of a bigger issue than the defrost clock, but we'll see you can see, they've got a large ice accumulation here and then from the looks on the other side. This has been like this for a while. That's been happening for a very long time that doesn't happen overnight, that batter on the expansion of so I'm gon na turn the fans on and along getting everything ready, we're just gon na.

Let this thing air, defrost and then I'll turn it off and use the water hose once I get it. Everything I showed this before, but always gon na take time running here poses so that way the customers not tripping over them, trying to be conscious of them and always roll with the drip loop coming off the moxie. So you get a better look once I get the fan, blades and fan guards off, I'm gon na go head and pull those fan motors out too. I always pull everything out when I defrost that way.

You don't compromise the motors or anything and then also while I've got the guards and blades off. I went ahead and set them down here, and I've got I'm soaking in a degreaser. So that way we can get those cleaned up also because they never get the opportunity to clean those. So I always take the chance when you can so at this point, I'm just gon na go ahead and pull the fan motors out and then we'll start defrosting.

The ice a little bit at a time, nice and slow with the hot water that way it doesn't leak down into the box, I'm not going to make a mess at all, I'm just going to take our time. So I got the Senators alone. You can see the abnormal icing pattern, definitely something going on there, so we're gon na start using about one of those defrost and this stuff notice. How we're just going a little bit at a time because we don't want to overflow the drain.

You don't want water to start dripping out of the coil see I got a drip, so I stop it's. It's a slow process. It's not a race, not making a mess period. So as I'm defrosting just because the coil is clear, it's not clear of ice on the back, but I'm continuing to defrost from the front sight, just nice and slow and steaming all the ice off off the back.

There's no need to get onto the back. If I just steam it from the front eventually, it's just all gon na fall off as one big chunk and it's already loose I'll kind of swing. It right as you can see. Okay, so it's kind of one big chunk, but it'll fall off in pretty big chunks as we're doing it, so just keep on going.

There's no reason to host from the back to make a mess just keep doing it from the front nice and slow see. If I steaming it like, I said I was able to get everything to just pull right off, no difficulty just kind of fell off, and I just grabbed it still have ice on this side. So we're just going to continue to defrost nice and slow, see how dirty the bottom half of oil is it's more than like everything G and this dirty was part of the reason it's plugged part of the reason it I stopped, obviously up top when you pull The ice off a lot of the dirt comes with it yeah this thing's filthy, so we'll get it cleaned up. So I got my big fancy brush and some degreaser out and I've sprayed it on the back of the coil on the inside of the coil and I'm just letting it soak and then we'll go to another rinse.

I've been pulling big chunks, see all that black. No their stuff down there bunch down on the coil. We got to make sure we rinse it all, get it all out of the drain. What doesn't plug it up? So I'm just moving along normally when you defrost, you can avoid getting water below the coil.

But if you can't - or in my case since I'm having to degrease and pull that lint off, I put a pan down here to catch all the water. So that way I can blast it see. I'm foaming up like crazy right now, so, okay, so for the most part, I've gotten it cleaned out really good! You can see light through the coil. Very well, there's still a couple little goobers inside there, but it can.

I do so much lights coming through really well, I clean the back of the coil, basically rents this thing with degrees for a bunch of time. So I'll give you guys a view here. She better brushed it cleaned it all the way through nice and good I'll. Give it one more brush just to get those last little paper or something, that's it.

So we're looking good. So now I have cleaned the ice from the electrical section, but I still have to finish the ice and the expansion valve section always got to make sure you check those sections. So we'll get all that out now, don't like fan, blades and fan guards all nice and cleaned up as good as possibe, perfect oil drain pan for the most parts cleaned up, there's a few little guys in there we'll get out. I want to make sure you flush water down.

There make sure it drains oils, nice and clear of ice, nice and clear dust and dirt expansion valve sections all cleaned up. So now we're gon na assemble the fan motors, get it running and then troubleshoot from there notice something that I did not adjust the thermostat. I left it where it was set. When I got here, if you do adjust it to defrost the coil, you want to make sure you mark it that way, you can put it right back where it was that way, you can verify if the thermostat is working properly, so you don't want to go In there to start twisting on it, without knowing what you're doing, because that could be the problem and by twisting on it you might solve the problem and then you'll just never know.

You know what it was. So usually I don't adjust on those this time. I went up and shut the condensing unit off so that way it could air defrost. But if I do adjust the thermostat I mark it before I adjust it.

So I've got the system back on and running we're going to go up, evaluate the system, see where it's turning on and off check these operators. I've got a sumption temperature clamp on the suction line down here and then also have a pressure probe on the suction line. Super deport and I've got my Eric thermometer right there, so we're just gon na watch. The box come down to town okay, so I'm currently pumping this system down now I tried to close the receiver valve and it's busted and it's leaking gas really bad out of the valve.

So I have the cap tightened gone and you see when I just spraying everywhere - that's too much gas, so I can't use that to pump down. I don't like doing this, but I'm using the liquid line solenoid valve to pump it down right now. What I need to do is I need to see the receiver level okay, because this guy has bubbles in the site glass right now and because this unit has a headmaster, I have no way of knowing exactly how much gas was missing out of this system. So what I'm gon na do is I'm just gon na put it the maximum amount of refrigerant in the system and that's three quarters of the receiver.

You never want to pump down and receive a pass to 80 percent. Basically, so if I fill this up to 3/4 liquid level, then I know I have the right, the maximum amount of refrigerant for this particular receiver, and I happen to know that that's enough gas for the system. I have got confirmation from the customer that they are going to want to replace this equipment, so we just need to get them up and running. So I need to get the refrigerant filled up and then so I'm just waiting for it to pump down.

So I've got the system pumped down and what I did was I took you have to be very careful about this. I took a heat gun and I just did two passes up and down. You got to be careful because we have a soft plug on this receiver. Right here did two passes up and down, and then I run my fingers along here and you feel for where the point where it gets really hot and that's the end of your liquid level.

So basically it came up to right here and it got really hot. So this means that my liquid comes up to here, so I need to fill this gap to the three-quarter mark. Okay, so now I've got it charged up, and this is my liquid level and this receiver now. So I was down here and I've gotten it up to here now.

So when I run my finger here, all of a sudden gets burning hot right here then, once I move down it's nicely warm, I should say so: we've got the maximum amount of refrigerant in here, while I'm testing that I'm noticing that we've got a weak valve On the compressor, also, it won't pump down past seven psi and it just sits there and runs and runs and runs and doesn't go any lower, so that just adds to the mess. So this unit has a refrigerant leak. It's got a compressor going bad needs. A new receiver, the coils starting to deteriorate, like I said the customer already knows they want to upgrade this equipment, so, okay, so nothing too complicated.

This was a service call on a beer walkin that was iced up, and I found that the unit was had a very dirty evaporator coil and was also low on refrigerant. Again, as I always do looking at the big picture, I found that the compressor has a weak suction valve. It was an R 22 system and it had multiple leaks and the evaporator coil was starting to deteriorate. So I went to the customer with a big-picture diagnosis and they actually decided to go ahead and replace the equipment.

This customer is very proactive with replacing their equipment, so they went ahead and approved it and they've already ordered the equipment, and once it arrives, we'll go out and install it. That was pretty much it. I did give a little tip on checking the winter charge on these systems. You always want to pay attention to the winter charge if the unit has a head master so on this particular one because it was low on refrigerant.

I had no idea of knowing how low it was. I just went ahead and put the maximum amount of refrigerant into the system. This doesn't work in every case, because if you have a giant supermarket system, you could potentially add a lot of extra refrigerant. So you know you need to kind of know your equipment and know your systems.

I knew that a 3/4 of the receiver on this system was perfect and it wasn't overcharged dramatically so that works for us here. Ok, so you just kind of need to evaluate what works for you and your situation other than that. That's pretty much it! I really appreciate you guys taking the time to watch my videos, please consider subscribing to my channel if you haven't already and also take pay attention to the show notes popping up right now, you'll see my YouTube channel and a few other people's YouTube channels that I Recommend so check them out and give those guys some feedback, consider subscribing to their channels and we'll see you guys on the next one.