 So I'm here to check out a furnace or a packaging that's not working that one's not it We got one over here That's just blowing cold. I went inside and checked the thermostats. They're on a zone system and So I got the key fob And a block box key there, which is good. Let's find out what's going on You know front we got a draft motor running, but it's not blowing anything hot out So there's obviously something not right with it. All right, so we've got a code here. It looks like code number seven Which is rollout switch the closest thing to a rollout switch these have got is this little rollout switch there Well, it's a carrier So we need to make sure we check that heat exchanger because that's usually what ends up happening The heat exchanger starts to crack the blower blows on it blows Heat back into this area here, and it starts to get too hot and that thing trips out which it trips out I believe at 190 With a 40 degree differential Let's go ahead and see if we get this powered off Check the belt and stuff and get in through there and check that heat exchanger belts nice and tight Don't feel like anything's bad there, but if you notice these screws are all nice and shiny For most of the point where they've been taken in and out so many times it's been stripped out So let's take a peeky poo in there and see if By chance, that's the heat exchanger and this one right here is just your limit switch I got the mirror out got way back in there looked around really good and even though it's little, you know Darkened there. There's nothing that looks bad at all. Everything looks really good checked around the top Everything was clean and clear Let's go ahead and get it back together kick it on. Let's see if When we unplug that if that's the code we actually get a seven make sure it's not, you know off and off the limit there See if we've got some wires loose. I just had one Recently that tripped and there was nothing wrong with it was only a few years old I ended up replacing the roll-out switch and didn't have a problem The thing I noticed with these is there kind of an open-face limit and so if you just barely touch it It'll trip. So it doesn't take much. It's kind of I always preferred switches are sealed Kind of like the way that one is I don't like the ones that are open Which you probably can see there that it's it's open That's not my preferred method. They just tend to get junk in them And you figure all that wind stuff blowing in there it can get inside there and screw up the contacts on it Get everything together there Let's kick it on see how this build acts We should check the filters here in a second to this being on the zone at me have a little bit of a delay Skipped on the blower and a squawks get that back on there Go ahead and put the store back on Seems like it's got Definitely got a little leaky chair Not that that would cause it to roll back out over here They don't have all day here get things to do Speed it up a touch Zone should all be open So it should not cause a problem here They went to black for our lovely. I know it gets kind of windy where we're at And watch this if I touch the back side of that just barely touch it. There goes trips out When it trips out it locks into a hard lock out It should be a number seven one two three four five six seven So the only way to get that to reset is to kill power to it and start over again Easier way here Voltage kicks on burners out Dust out of the bottom blow at that direction and blow through the burners I'm gonna go ahead and kill gas to it that we don't have any problems with the we have before we had that That sure makes it nice See how she lights off now spray all locked out And it's probably in a retry should kick back on here in a second. There it goes And make that crazy pop that time Crossovers are in the right spot. That's another thing I like to look for Try one more time see how she lights off let the fuel Go and then it's pretty smooth a lot better than what it was. It's a pop before We could have had possibly You know one of the burners didn't ignite now No, it's a flame sensor, but I caught it I'm not real sure guys like I said We're gonna order a new one. I think that's the only thing it really could have been Especially being just running now. I'm gonna put my thermometer in there See if I can feel anything, but I really don't think it got up to 190 degrees I think it just false alarmed out. I think I'm crazy, but that really feels moist Almost like more than normal. It's not that cold out here But it makes me wonder did possibly water Since that water is right there it gets sprayed in there for some ungodly known reason Maybe it was boiling off Caused some roll out Not seeing any roll out at all. It looks like it's going straight across just like it should Straightest things in the world there. It'll usually hold it in. Now. I did see that screw back in the back It's a little loose so that whole bracket is going up and down What I would speculate probably happens is kind of come in here and you push down on this That does lift it up. I mean you're kind of using as you're kneeling bracket there Maybe it caused it to roll out a little bit I think just one little poof would have done it. Whether it would have stopped it would have went off on the Proximity sensor there on the end At this point, I believe we're just going to end up with a new roll out switch Everything else looks pretty good on it And it's shutting down. I can speculate all day, but that grill Was right up here if by chance It was too close to it. It could have recirculated and That heat would have came right out of here right to there. I could see that Possibly tripping it out I'm going to go in turn it on thermostat But right now we're ordering a new roll-out switch, but I think maybe possibly That had something to do with it and it very likely could have been channeled with this patio furniture. It's out here so let's go kick it on but right now it's not acting up and It should run a little bit better now than what it was temperatures would get in here. I Highly doubt it's anything Crazy high where would you come close? Yeah, we're already dropping down to 68 Let's try blocking it off a little bit See if that makes any difference It's going up a little bit Put a block in front of there. I held that block right up there this far away from it It didn't didn't rise much at all. I Suppose it could recirculate it if the wind was blowing just right, but I don't think that's a case. I'm gonna go with it Sensor's getting weak So it's gonna do it on it filters fine belts tight. I think they're due for maintenance here for long So we're gonna go and wrap this one up head on to the next one. Well, we're back to your place that limit Which we've got the new one here ready to go It was tripped out again on number seven We got her yanked out go ahead and get it back in there and We'll see how it does Got the new one in there. Let's go ahead and Her fuse back in there. I didn't go get a lock yet to unlock. It's thinking disconnect Which does it's got a sewn panel. So it's gonna take a little longer ticked on almost immediately Look hold on here today, too Head and punched a hole into that Leatherman peeled that out You can kind of see all that is just a cheap little switch See how that would be Get dirt in there and stuff. You can see how that would cause it to malfunction that really should be a sealed switch in my opinion Yeah, I think that's the whole deal here. It just needs to be a sealed switch but Yeah, you see that the guts of it fell right out That's that's kind of a Kind of a crappy design all that was a piece of plastic inside there Fell down here somewhere Look upside down it fell out Let's open up this plastic here for a second Yeah, all that is Just a crappy little switch see that Tad some arcing of some sort. It shouldn't have any arcing at all So just barely making contact there That's definitely not good. I bet you anything that's silver That right there's gonna be silver, too So that's that's what we got inside the switch literally Normally closed circuit there with a little piece of plastic in between there Bimetal disc pushes on it and it opens it up rocket science at its best Bimetal piece there pretty much it's got its Design characteristics is what causes it to bow inward and push on that And she's running This like I said the second one That I've had this happen on and I haven't been called back to the other one that I know of I'll wrap that up guys till next time. We'll catch you on the next one later