So today's call is on the thermostat. That's blank and those that's got to be cracker here reacts to touch, but you got nothing on the screen. They're getting construction down, they're, getting a remodel right now, more than like they got broke during the remodel. First thing: we're gon na do is check voltage up the staff, so I've got 27 volts going to the stat, but it's blank, so we're gon na go disconnect power and then change the thermostat.

Alright. So here's my unit, nothing crazy, we're gon na power down, but I wanted to point something out. I wish I had a duct detector, I'm here to show you guys, but a lot of times these units are tied into the fire alarm system. So what happens? Is I'm gon na power this down right now, when I power this down, what happens is the duck? Detector loses power.

This isn't always, but this particular system right here. This is how it's working the duck. Detector gets power from in the unit, so the duck detector just lost power and usually what happens is they are wired into the fire alarm system through the trouble contact in the detector? So if it ever loses power, it doesn't set off the fire alarm, but it sets off the trouble condition for the fire alarm. Okay, it's two things: it's a tamper.

So basically, we have a trouble contact in the duck detector and what it's there to do is to prove the circuit. So on a lot of the duck detectors, you can set them up to where if it loses power, the Troubled circuit drops out. So that would we know so what I had to do was I actually had to have the manager call the fire alarm company and put their system on test so that way they wouldn't get a silent signal. Now, typically, they don't dispatch the fire department when they get a trouble condition, typically, okay, but no.

What they usually do is they'll call the restaurant and say hey. We just had a trouble condition and what the trouble condition does is. It usually serves two purposes in this case here. It lets them know if the unit gets powered down, because if the unit gets powered down it no longer has that duck detector working anymore, okay and then also the trouble circuit.

They have a resistor ran across the trouble contact and if that resistor ever disappears, it either means that we've lost power to the detector and or one of the wires running from the fire alarm panel has been broken. So it's a way to prove that the fire alarm circuit. Is there all the time? Okay. I know I've showed that in videos before, but just wanted to point that out so before I had before I came up here and powered down this unit.

I let the manager know they put the system on test and then that way I can come in here and start working. So this isn't how it is at every single restaurant. You just you need to know your systems. Okay, if you ever are worried about it, go ask the manager.

You know if you've never been to that particular location. Ask them hey. Do you need to call anybody when I shut down the unit and sometimes I'll say oh yeah, thank you for reminding me. You know cuz, they don't want the headache of the phone calls or whatever.

Now I've been at a shopping mall before and their system was wired in a way that when I shut down the unit, the fire department showed up. That was not fun. When you turn your back around and there's a guy on a hook and ladder truck popping up over the roof - and it's like wait a minute what happened here? That was not a fun situation, and that was actually a mistake. They had something done wrong in their system, but it was a new restaurant.

Someone wired something wrong, they corrected it, but still you always want to be cautious. You don't want to be setting off a fire alarm or sending silent signal to anybody. Same thing goes for I'll. Take you downstairs here in a second, but for like a walk-in freezer, if you're doing walk-in freezer work, you're gon na be doing a lot of construction in there.

Maybe fixing a door hanging new hinges. There's silent alarms a lot of times in the walk-in freezers too, and those ones are no joke. If you set off a silent alarm in a walk-in freezer, the police come Code, Blue, no sirens helicopters, usually depending on the area you're in if you're in a shady area, they come and they're, not happy when they find out. It was a false alarm, because the silent alarms are there they're, basically panic, alarms in case they're, getting robbed so I'll.

Take you down and show you one of those panic alarms right now. In my opinion, this is how a panic alarm should look. This one has a protective safety cover, so you can't accidentally set it off, but you would just pull down on that and it would set off the panic alarm. Well, let's go over here.

Sometimes they have them in here too. No there's not one in this situation, but sometimes you'll see them on the head of the door right there or down in here, and you won't even realize they're there and you could smash boxes into them or, if you're hanging a door you could. The vibration can set those things off if they're really sensitive, so you always want to be cautious about fire alarms and alarms always want to pay attention to that code, because that's your password for the thermostat, if you ever get locked out and if that doesn't work, That number plus one two three four, is the backdoor password for the thermostat okay gon na go through these programming functions, real, quick, I'm not gon na break this whole thing down, but I'm just going to show you my most important things through all this stuff. A lot of the things I just leave the same, because I only have two stages of cooling, but I do have two stages of heating: don't really change any of these cycles right here, don't mess with the extended fan, runtime.

Okay! This is an important one right here. I'd only want two periods per day. This is a restaurant. We went on and off, there's a really really important one in here when it comes to remote temperature, sensors, okay, wired sensor on s terminal, that's any kind of remote sensor, so you need to say yes, wired, indoor remote sensor, yes, indoor sensor, there you go right.

There in door sensor t stat terminal s1 that is correct. What type of sensor here's a really important use: T stat sensor for temp control! No, because I have a remote sensor, use indoor sensor for temperature controller. Yes, that's it! So you got to answer like four questions and if you don't, I don't need to do any more of this stuff. You can do all kinds of stuff in here.

You guys can read the manual you want to EXCI. Yes, okay, so now we're gon na go. Put it on the wall, I've got a 20 K zone sensor. We can go ahead and set the tongue.

I don't think it'll. Let me set the time actually saying yeah I'll set it now. So this is pretty much the only thermostat I sell for the most part. I just use these everywhere.

That way, I can walk my technicians and my customers through troubleshooting them over the phone. Now I'm just waiting we're doing we're gon na. Do a full call for cool right now from down at the thermostat to make sure everything's good and then, when the cooling call shows up y1 and y2 are energized, let it run for a minute, then I'll put it into heating mode and test w1 and w2. We're just making sure that everything is correct, we're not just going to throw that stand in and walk away yeah.

It was broken yeah. That's probably all that's wrong, but we need to verify that you know everything's good because we're gon na own this when we walk away so all right, so nothing too complicated. This was a service call on a thermostat that wasn't responding to touch. When I arrived, I found that the thermostat was broken.

The display was blank, but it was responding to touch like it would light up when you touched it. Okay, like I said in the video they were doing, construction at this particular restaurant and they just busted. The thermostat interesting thing is: is that this this particular restaurant chain is doing this construction all over the place in my area. Right now - and this is the third one - I've had a broken thermostat, so hey thanks construction company you're, helping me out.

That's pretty much it on the repair. Okay, it was nothing too crazy. Always look at the big picture. Make sure you test the functions of the thermostat heating and cooling.

I actually made a recommendation to the customer that they, let me come back out and do a more thorough test on the AC, because I noticed that I had a pretty strong burning smell when the heat exchangers lit up. We don't use the heaters out here. Very much but we're just coming into the time where we're going to so I suggested they had me, come up and just burn those heaters off and go through everything. They're gon na call me back out probably next week, go through that and test all the heaters and make sure everything's good but important about the alarm systems.

Okay, whenever you're working at restaurants, you want to make sure you're paying attention to stuff. You know it's important to understand how their their fire alarms work and their panic, alarms and different things. Okay, I know the panic alarm has nothing to do with the air conditioning unit that I was working on, but I just thought it was important to bring that tip up okay but yeah. So whenever I go to work on depending on what restaurant chain it is, I know you know this particular chain wires, their ACS into the trouble contact.

The way that I explained in the video all the time. So when you power down a unit, it sends a silent signal to the alarm company, saying that there's a trouble condition now it's important to understand. There is a difference between a fire condition and a trouble condition. A trouble condition is usually a supervisory issue.

Just like hey. We need to get the alarm Tech's out here. Maybe there's a broken wire or hey. You got a powered down HVAC unit when you wire them up that way.

You can also use that kind of as a theft deterrent device right, because if a crackhead is smart and he comes to steal that condenser well, I guess maybe smart or not smart. He powers it down, so he doesn't get electrocuted well when he powers it down. He sends a trouble car. He creates a trouble condition within the fire alarm system.

So you know they get a silent signal in the middle of the night and then, depending on what you know the protocol is, is they usually call to general manager? No matter what time it is and say: hey we just got a silent alarm saying you had a trouble condition. Do you want us to dispatch, they may dispatch fire or PD or they may do nothing. It just depends so, but you know that's a cool theft, deterrent device that you can do. I have a duct detector, video and I believe I go kind of into depth about the Supervisory contact on there and how you could do it using a resistor.

You know, and that's pretty much it guys: okay, thanks for taking the time to watch my video consider subscribing to my channel if you haven't already and give the other channels, some love that are popping up right now check them out, and I will see you guys On the next one.