So this unit is leaking water everywhere drain pans not plugged up. We've had a history of a refrigerant leak on the first stage of this guy, so we're gon na check everything out right now so far, the blower assembly or the air handler has water signs in it, but the drain pan is not full, so we're gon na Do a analysis on this unit check the refrigerant charge and then possibly do a leak check this one's a tall one, because it's only accessible by a 16 foot ladder. It's a big boy there. She is okay, so this unit has a VFD tucked back inside there.

It's basically a 2-speed blower. What I found right now is that this unit was not wired up for two speeds, so the VFD was never speeding up to a hundred percent. So there's some funky wiring going on here. I'd like to correct this, but we'll have to talk to them.

For now I made a temporary fix. What happened was the original installers never landed the wires on the terminal block, so I figured out which one was which, if you look up here, we've got four wires and if you look at the schematic, basically this is common. This is G. That's signal to turn the fan on, but that turns it on in low speed and then you have it wired up to y2 and you have it wired up to w1, because this is a heat pump, so they have it wired up to w1, because during heating You want this fan running out a hundred percent and during cooling you want the indoor fan running out a hundred percent when the second-stage comes on, so they didn't have the second-stage wired up.

They had the heating wired up, but not the second stage for the cooling and we've got a water leak problem here, so I temporarily repaired it by running a jumper from G to y2, as you can see right there and now it powers at a hundred percent. When the blower motor turns on until we can get in here and really troubleshoot this wiring and figure out what's up, but that's a major issue - and this is a major installing issue that someone never corrected correctly - they just never landed. The wires is what they didn't. Do this particular location is located on top of a shopping mall, if you don't have the joys of working on shopping malls.

Yet I don't ever wish that on anybody in your family or yourself, because they're fun say the least, usually a game of playing with security. Then losing your insurance paperwork then telling you the unlock the door that they did in all kinds of fun. Stuff like that. So we'll see if we get lucky right now well looks like we're lucky, but we're going out there.

I brought the bare minimum of tools that I thought I would need there's times that you like a cage on your ladder, but then, when you carry a tool backpack that cage sucks, luckily I didn't bring my backpack right now, so not too bad will see at The top and our equipments all the way at the other end of the roof. We share the roof with a movie theater and two or three other restaurants. This restaurant actually isn't part of the actual shopping mall, it's a building they added about seven years ago. So I guess it could be worse when I'm doing work like this, where all that I'm gon na do today is just put some refrigerant in the Sunnah and that's it.

We're gon na come back. We're gon na quote everything, so I usually won't bring my big tool backpack. I got my small little veto bag. I believe this is, I think, it's the env2.

I think don't quote me on that, but it's the tall meter bag. So I'm pretty sure that's the env2, and then I have one of these lug jugger straps for carrying refrigerant and I'll. Just strap it to it. Pretty sure you can get all that stuff at true tech tools.

I believe that's what I think I got it all. So we're just going to top off the charge, so we've got an 80 degree liquid line temp and 293 for our liquid pressure. So if we go to 293, that puts us like right about here and then we go at about 80. That put that actually puts us right on the line, so we're actually look like we're about perfect.

So, even though it's leaking, it hasn't leaked out enough to be low. Yet is what it looks like, so we're gon na check the other circuit to okay. So this is my other circuit. Look at my liquid line: temperature about 80 degrees 79 and my liquid line pressures to 96 call it 300.

So if we go to our chart right here, I have a mark right here at about the 300 mark and then, if you take 79 over here and follow it over, puts us about right on the right on the curve. So we don't need to add gas to either circuit, so I'm all finished up up here, I'm taking my gauges off. It's always important that you purge the refrigerant back into the system. Obviously, if you don't already know disconnect the high side valve it off, take it off.

You know open up the high side, purge it into the low side and basically that the system suck up as much as it can another really important tip is our service caps. Always inspect your service caps to make sure they have the rubber o-rings inside of them. Those rubber o-rings will cause you a headache. Later I got everything all disconnected and I'm just kind of surveying what I'm gon na need to repair this leak.

You always want to look at the big picture. More than likely, I'm gon na be able to pump the refrigerant down into this condenser, but I also in my head, want to keep in mind how much refrigerant I think that this system has, I could calculate it. I could make an estimation by measuring the liquid line. I really don't know, though I could take yeah.

You could figure it out by doing some math, but I really don't know. I'm gon na estimate that this system takes about 40 pounds in each stage. Maybe 30 pounds somewhere in there, so what I'm gon na do I see that I need a dryer, it's a 16-4 sweat, so we'll bring one of those by flow and then I'll go ahead in my quote and include a recovery charge. Make sure it's for a fifty pound tank because we can get 30 40 pounds in there or something like that.

So just in case I can't pump it all down into the condenser. I can have a recovery tank handy then we'll fix the leak, the leaks on the second stage, equalizer line - that's pretty much it! That's all we're gon na need for this I'll kind of estimate that, in my quote, that it's going to take ten pounds of gas, but it probably won't so you know I'll just let them know and that's pretty much it so we'll get it quote to him And then see what they say so on that one, it's a recap: we had a service call on a water leak coming from the fan coil unit for a split system, heat pump. This is a 15-ton system. When I got there, the drain pan had a little standing water in it, so we blew out the drain just to be safe, but I was looking at the water on the the filters are at a slant, so it's a slanted coil.

So I was looking at the water pattern because water had been dripping on the filters and it was indicating to me that it was actually dripping off the coil, not necessarily just overflowing the drain pan. So I think we had a couple problems there. It's important that you don't just have tunnel vision, find a plugged up drain move on, I dug into it a little bit deeper and what I actually found was that the indoor fan was never ramping up to a hundred percent, so that has a VFD. So it's a two-speed fan.

It's this! You know title 24 efficiency stuff here in California that we do. I'm sure I think it's just getting everywhere to be honest with you, but it's an energy efficiency thing they're running the indoor fan on a low speed when just the first stage is calling and they're running it on a high speed when the second stage calls well. This one was never running on high speed, so the second stage would start calling and it would start getting cold on the coil, but we weren't getting enough airflow. So more than likely it would start frosting up or condensating a lot and it would in a drain correctly and it started dripping down into the the bottom of the fan coil unit and tripping over the customers.

So I corrected that problem. But then previously I had talked off the charge on this, probably about a month or two ago, and they never had me come back out and do a leak check. So while I was in there, I did a leak check and I found that leak of which I had topped off the charge. The last time for so I located the leak, went upstairs to top off the charge again and it actually hasn't even leaked out enough.

So I didn't have to add any gas at this time, but now I can give them an official quote to repair the leak and get the unit operational and then I'm also I did a temporary fix on the electrical. I really don't like the way that it was set up, as if you saw in the video they never landed the wires on the terminals. They were just basically wire noted and I just don't like the way that it was. I did a temporary fix by running power from Qi over why on the terminal strip, because that's the way that that air handler knows that it's calling for second stage is when y2 gets energized.

There's a wire that runs to the VFD Drive and it just looks for a 24 volt signal when it gets that 24 volt signal and ram2 the VFD to a hundred so anyways. I just did a jumper wire from G to y2. So that way, it's gon na run full speed, 24/7, no ramping down at this time, and I would like to permanently fix it. But even if they didn't approve the fix, it would be fine running on high speed it just wouldn't as be as efficient.

Essentially so we'll submit the quotes and we'll see what happens all right.