So today we have a call on a couple ACS, not working. This is one of my locations out and looking to California, so it's nice and warm it's currently. I think, like the beginning of the May, like the eighth, maybe or something so it's already starting to get hot out here. I think the current temperature I haven't measured yet, but it's probably 95 98.

So far I get hotter throughout the day. This is definitely the first heat for us these first couple weeks of heat, so we're getting a lot of a/c calls, especially out in this area. So their complaint is is that they have two ACS, that the thermostats are blank and they've got just heat complaints all over the restaurant. I already know that there's more problems from the last time we did there PM about three months ago.

I noted a couple ACS. Actually, like three or four ACS that had issues, so I just reminded them, and they wanted me to go ahead and look at everything. The first thing this is the AC right here, AC number five. This is for their kitchen area, slash office.

When I first came up here, though, they've got like a little split system that feeds part of their kitchen too, and the suction line was all frosted up. So I have a feeling that units iced up. I know that that unit has some major air flow issues, because it was never installed correctly. For now, I just pulled the disconnect for that unit just to let it defrost so that way.

The evaporators running defrost that coil and I'm gon na jump on this kitchen AC because it's for their office and they're needing that first, so we're gon na get into it and see what happens so. I've got the control section opened up. This restaurant uses an EMS system, energy management, so first thing we're gon na check is line voltage coming into the unit from the disconnect switch to see if we have three-phase power and then after that, we'll check low voltage, let's go ahead and see what we can Figure out here: okay, 2:06, 211. 2:07.

So we've got three phase voltage coming in so we're good there. Then we could just go over here to this low voltage terminal strip and check to see what's going on here. So the complaint is, is that they have a blank thermostat. So artist C gets me 26 volts well, and we've got a blank thermostat.

So that already tells me that we've got a bad thermostat I'll, just check off, see to everything else. There's nothing else going on. So right off the bat yeah, it's zero volts, so our to see we have 24 volts and then everything else is dead. So this sends voltage down to that thermostat.

But the thermostat is controlled by the computer system in the cloud so that thermostat not having to display means that we've got a bad thermostat. So right now, what I'm gon na do is I'm gon na go ahead and jump it out and then test the unit out and see how it works. So I went ahead and put a couple jumpers. This is carrier board you can grab are off of over here, so it's a little bit easier, but I jumped R to G and our y1 and our systems running contactors are pulled in so dead giveaway.

We have a bad thermostat, I'm still going to go ahead and gage up just to check the rest of the unit, because I'm looking at the big picture, I'm not just having tunnel vision and stopping at the thermostat we're gon na solve the whole problem. You know whether or not there's other issues or not we'll find out, but we're gon na look, and this is exactly why I say we're gon na to look at the big picture. Look at that belt now blower wheels hammer to that. Blower wheel needs to be taken out and cleaned, but we got a loose belt.

So if we just condemn the thermostat and came out to change the thermostat, we wouldn't know everything that was going on. You always have to look at the big picture. These customers will appreciate that more so, especially on a facilities level. They will appreciate it because they don't want to keep paying you to come back out here to do stupid, stuff so and then pulled the belt off.

Don't know how well you guys can see that, but that thing is pretty caked up with goo and stuff. Hopefully it didn't mess up the balance of the blower wheel. So when I clean it, I'm hoping the thing don't rattle like crazy. Sometimes that can happen if the thing runs with a dirty, blower wheel for a really long time.

It'll actually balance itself out because of the weight and then you'll go and clean the blower wheel. And then the thing will need a new blower wheel because it's out of balance, the other thing I noticed is this pulley is pretty glazed over and it's starting to go bad holy SH Eve. Whatever you want to call it, I know, there's always a battle there to call it a pulley or achieve in other correct ways. It's an adjustable sheath, but I call it a motor pulley and I call this the drive pulley, there's all kinds of different ways that people refer to them.

Some people call this the drive pulley. Some people call this the driven pulley. I call this the motor pulley. I call this the drive pulley, so we're gon na need to get a new pulley for this guy and then we're gon na need to pull that blower assembly and clean it and get a new thermostat for it's not that hard to pull these blower assemblies.

Maybe 15 screws - you know just just go to think about it - for a sec got this thing pulled out. I'm just gon na go ahead and rinse this guy real, quick, this one's not too bad. You get to it soon. You can fix these problems, but this will definitely cause airflow issues for sure again, our main problem is is a bad thermostat, but we want to fix this a/c.

We want to fix the complete picture, so we're gon na hose this guy off, get a cleaned out. Put it back in got to be careful too, because this is a Down shot. A/C, there's a bunch of junk from the blower assembly blowing the crap down on the heat exchanger. So when I pressurize this thing, it's going to have more airflow than usual and we potentially are gon na blow lint out of all the AC ducts.

So what we'll do? Because it's a down shot I'll, take that panel off and put it on the supply. Duct going downstairs turn it on and blow the crap out of the AC before we turn it on into the ductwork, I'm going to use some coil cleaner on this blower assembly to get the hard caked on lint and stuff. That's in there off a couple things you want to be cautious about. This is one of those plastic roofs a lot of times.

They don't want this coil cleaner on the roof, so you got to make sure you're minimal on your concentration and make sure you rinse it down as best as you can there's only so much. You can do also be cautious about you know getting coil cleaner inside the bearings you don't. I don't know what that would do to the bearing, but you necessarily don't want it to penetrate inside of them. So just I'm gon na take it easy around the bearings, but I'm just gon na blast the whole inside of the case.

Let it sit for a minute, then rinse it all off. Just using a Calgon coil gun with some new bright condenser coil cleaner. You know I'm gon na, let it sit for a few minutes and then we'll give it a good rinse and we'll try to wash all that stuff down the drain as best as possible. It's already doing a good job of knocking some of that stuff off.

So another thing to remember is this: isn't going to be perfect, so also pay attention to what rinses out these blower wheels have weights on them? Usually they look like fancy paper clips. I don't know if you can see these right here, it's kind of hard, but there's a weight back. There turn it around, and let you see one over here that right there is a weight and you want to be careful. We don't wash those off got the blower assembly done and what I did was actually took the nozzle off my hose.

I rinse down the roof and then I'm letting that water kind of flood, so it dilutes the the puddle that I can't really wash so I'm just kind of letting it you know, mix with that big puddle. Unfortunately, the way this roof is sloped. It has a hard time - and you get a big standing puddle over here, so we're just going to let the water run and kind of dilute it down and run it into the drain. Hold the supply access panel off and then positioned it over the supply hole and then what I'm gon na do is I'm just gon na brush the heat exchanger off down in here just brush this big ol chunker's off? If I can, it's gon na be hard and then that way, it'll just blow out of the unit, hopefully and not down into their kitchen.

This is gon na I mean it's not gon na be perfect, so another one of those polishing, a turd things. So we'll go from there. Blower assembly turned out good nice and clean as clean as it can be much better. So that's nice, so I'm gon na brush this thing off I'll, probably grab my vacuum: real, quick vacuum out and then start the blower assembly up blower assembly back in the motors mounted.

I got to figure out these wires. These things had these zip ties that had these little plastic automotive connectors that push through and grab - and I couldn't really get him out very well - is only able to get one out and that's this one. So I popped that one back in we're going to show you how I fix these. So if you cautiously take these things apart, just cut the zip tie right push the old piece through clip off the excess, and now you can run a new zip tie right through that little clip and it still has the connector on it.

Then you could still have your connection setup going on and everything can be nice and snug no problems so back on. You don't want to run it for too long, because the motor is probably overloaded right now, but now it's blowing out like it should be. So I got a new pulley on this one. Definitely bad last thing I did was I installed a temporary thermostat.

I pulled off all the old thermostat wires for the BMR EMS system, energy management and install just a cheapy thermostat and dropped it down in the returned temporarily. So that way they can have an AC. I secured the wires walk around here, look down in there. Okay, this is just the throwaway stat until they can get a corporate approval.

I basically have it set and cooling for 74 degrees and have the fan in the on position all the time. So it's going to run this little Hardaway. That way, we can have a temporary solution, so they don't have to go without an AC until the energy management company gets the new one out here turn this guy on you.