00:00:06.180 [Music] 00:00:11.99000:00:12.000 [Applause] 00:00:19.47000:00:19.48000:00:25.64000:00:25.650 hey guys J here with word of advice TV 00:00:28.50000:00:28.510 today I want to go over the most common 00:00:30.42000:00:30.430 furnace problem so on average every for 00:00:33.81000:00:33.820 example every six furnace calls one of 00:00:36.06000:00:36.070 them is guaranteed to be this problem so 00:00:38.76000:00:38.770 to begin with take off the top door on 00:00:40.89000:00:40.900 your furnace sometimes it'll be held in 00:00:42.84000:00:42.850 by some screws other times like on this 00:00:45.21000:00:45.220 American Standard which is the same 00:00:46.53000:00:46.540 thing as Trane the doors will just pop 00:00:48.66000:00:48.670 off like this and then once in a while 00:00:52.59000:00:52.600 on some Trane furnaces you have to take 00:00:55.56000:00:55.570 the bottom door off before you can take 00:00:57.21000:00:57.220 the top off but anyways one way or 00:00:59.75900:00:59.769 another 00:01:00.03000:01:00.040 get the top door off and then with your 00:01:02.28000:01:02.290 thermostat calling for heating just look 00:01:04.71000:01:04.720 and see what your furnace is doing 00:01:11.05000:01:11.06000:01:12.71000:01:12.720 and while it's turning on here I just 00:01:14.36000:01:14.370 want to go over briefly how it works the 00:01:16.94000:01:16.950 very first thing that starts will be 00:01:18.59000:01:18.600 your blower PAH your inducer motor right 00:01:20.33000:01:20.340 here so this thing will turn on and 00:01:23.33000:01:23.340 after the inducer motor turns on these 00:01:25.19000:01:25.200 pressure switches if you have a 00:01:27.44000:01:27.450 two-stage furnace typically you will 00:01:28.85000:01:28.860 have two an easy way to know if you have 00:01:31.22000:01:31.230 a two stage or a 1 stage is you'll have 00:01:34.01000:01:34.020 a red in the black and a white whereas 00:01:36.17000:01:36.180 if it's just a one stage wire you'll 00:01:37.55000:01:37.560 have two wires coming out of here and 00:01:38.87000:01:38.880 that's it but anyways if deucer comes on 00:01:41.06000:01:41.070 pressure switches closed then the 00:01:43.43000:01:43.440 igniter starts to glow we should see 00:01:46.43000:01:46.440 that start to blow in a little bit here 00:01:48.70000:01:48.710 the igniter is the one with two wires 00:01:51.05000:01:51.060 going to it right here usually has a 00:01:54.38000:01:54.390 plug so right there you see the igniter 00:01:56.57000:01:56.580 glowing that bright orange glow 00:02:03.49000:02:03.500 then the gas valve opens and the flames 00:02:05.89000:02:05.900 turn on and notice how they only stay on 00:02:08.56000:02:08.570 for a couple seconds and then they turn 00:02:10.81000:02:10.820 right off if you're seeing your furnace 00:02:13.06000:02:13.070 burners doing that when they only just 00:02:14.98000:02:14.990 come on for a couple seconds and go off 00:02:16.60000:02:16.610 it's almost guaranteed that your problem 00:02:18.97000:02:18.980 is a dirty flame sensor and the flame 00:02:21.28000:02:21.290 sensors on this side right here and 00:02:22.78000:02:22.790 generally you'll have one wire going to 00:02:25.00000:02:25.010 it it'll be on the opposite side of the 00:02:27.04000:02:27.050 igniter so it's right here as held in by 00:02:30.52000:02:30.530 one screw so to remedy this problem is 00:02:34.18000:02:34.190 actually very easy all you gotta do to 00:02:36.19000:02:36.200 begin with is turn off your furnace 00:02:37.84000:02:37.850 power switch and while I'm turning this 00:02:41.14000:02:41.150 off I also want to mention that 00:02:42.81000:02:42.820 sometimes not sometimes but almost all 00:02:45.94000:02:45.950 the time the newer furnaces have a 00:02:47.29000:02:47.300 lockout feature so if the furnace tries 00:02:49.42000:02:49.430 to ignite five times in a row and it 00:02:51.69900:02:51.709 goes off because of that flame sensor 00:02:54.07000:02:54.080 it'll go into a lockout for three hours 00:02:56.14000:02:56.150 or it'll just sit there and do 00:02:57.85000:02:57.860 absolutely nothing and then in three 00:02:59.56000:02:59.570 hours it'll come back on and try again 00:03:01.18000:03:01.190 and in order to reset that lockout all 00:03:03.82000:03:03.830 you got to do is turn that furnace power 00:03:05.53000:03:05.540 switch off for maybe five seconds and 00:03:07.90000:03:07.910 then turn it back on and that will reset 00:03:09.37000:03:09.380 it but anyways to clean this flame 00:03:12.52000:03:12.530 sensor just take it out 00:03:23.92000:03:23.930 it's usually held in there either by a 00:03:26.93000:03:26.940 quarter-inch nut screw or a Philips 00:03:30.85000:03:30.860 mine's a quarter-inch so take out the 00:03:34.40000:03:34.410 screw and wiggle the flame sensor out 00:03:39.17000:03:39.180 most of the time it'll be an l-shaped 00:03:43.03000:03:43.040 but there are many different styles of 00:03:45.50000:03:45.510 flame sensors they can be straight they 00:03:47.75000:03:47.760 can be l-shaped like this they can be 00:03:49.13000:03:49.140 long or short if you see my flame sensor 00:03:52.04000:03:52.050 has some buildup on it and this buildup 00:03:55.01000:03:55.020 just comes from the carbon inside of the 00:03:56.93000:03:56.940 flames and also the front don't worry 00:03:59.69000:03:59.700 here see how it has all these grates 00:04:02.63000:04:02.640 it's sucking air in for combustion for 00:04:05.42000:04:05.430 the flames and you know whatever 00:04:06.98000:04:06.990 particles are in the air dust and 00:04:09.29000:04:09.300 whatever other debris also settles on 00:04:11.36000:04:11.370 this flame sensor and with time when you 00:04:13.70000:04:13.710 have enough of a coating on here it'll 00:04:15.71000:04:15.720 prevent the flame sensor from sensing 00:04:17.69000:04:17.700 any flame so to clean the flame sensor 00:04:19.34000:04:19.350 you can either use a dollar bill or a 00:04:22.40000:04:22.410 five dollar bill or a ten dollar bill 00:04:23.99000:04:24.000 depending on how much you have in your 00:04:25.13000:04:25.140 pocket but just grab it and clean it up 00:04:27.89000:04:27.900 real good you can use some fine steel 00:04:29.90000:04:29.910 wool or what I like to use this tends to 00:04:32.42000:04:32.430 work the best and last the longest is a 00:04:34.37000:04:34.380 scotch brite pad almost like a 00:04:36.65000:04:36.660 dishwashing scrubby just grab the flame 00:04:39.11000:04:39.120 sensor real firmly press down hard no 00:04:41.93000:04:41.940 matter what you're using sandpaper is 00:04:44.42000:04:44.430 not really recommended because it tends 00:04:46.46000:04:46.470 to be too abrasive if you scratch this 00:04:49.19000:04:49.200 rod then the stuff will stick to it even 00:04:51.62000:04:51.630 faster so this scotch brite pad works 00:04:55.10000:04:55.110 the best so just press hard and shine 00:04:59.87000:04:59.880 this thing up 00:05:02.76000:05:02.770 I don't know if the camera will be able 00:05:07.02000:05:07.030 to catch it but it looks a lot better 00:05:09.62900:05:09.639 than it did when I originally pulled it 00:05:11.64000:05:11.650 out so once you clean that up you stick 00:05:16.35000:05:16.360 it back in and put the screw back in as 00:05:27.77900:05:27.789 well and on a side note I work on many 00:05:41.76000:05:41.770 furnaces and some of them the flame 00:05:43.83000:05:43.840 sensor is not nearly as easily 00:05:45.74900:05:45.759 accessible as this one for example some 00:05:47.70000:05:47.710 carrier furnaces will have the flame 00:05:49.37900:05:49.389 sensor the burner box will be up here 00:05:51.18000:05:51.190 and the flame sensor will be behind the 00:05:53.37000:05:53.380 burner box and there will be some 00:05:55.32000:05:55.330 venting here and some piping and an 00:05:57.30000:05:57.310 inducer motor all in front of it it's 00:05:59.45900:05:59.469 super hard to get to your options are to 00:06:01.83000:06:01.840 either try to take apart the piping or 00:06:03.99000:06:04.000 the venting or maybe even take out the 00:06:06.05900:06:06.069 inducer motor just to get to the flame 00:06:07.58900:06:07.599 sensor or what I like to use is this 00:06:10.20000:06:10.210 flexible bit extension right here that 00:06:13.20000:06:13.210 way you can just put it on your drill 00:06:14.67000:06:14.680 and try to reach in there from the back 00:06:19.83000:06:19.840 and get to it that way but even with 00:06:23.64000:06:23.650 this flexible bit extension thing it's 00:06:25.68000:06:25.690 pretty hard to get to but for that 00:06:28.46900:06:28.479 reason I also have multiple extensions 00:06:31.40900:06:31.419 like this I got the 12 inch long 00:06:33.95900:06:33.969 extension then you got the 4 inch then 00:06:37.46900:06:37.479 you got the 75 degree bit holder right 00:06:40.29000:06:40.300 here this comes in pretty handy there's 00:06:43.46900:06:43.479 also some Rheem furnaces that have the 00:06:45.95900:06:45.969 burners down here and you have about an 00:06:48.60000:06:48.610 inch of space between the burners and 00:06:50.43000:06:50.440 the floor of the cabinet the furnace 00:06:52.32000:06:52.330 cabinet and it's really hard to get in 00:06:54.26900:06:54.279 there I usually end up getting some 00:06:55.76900:06:55.779 needlenose and trying to pry the flame 00:06:58.14000:06:58.150 sensor out that way 00:06:59.21900:06:59.229 but those reams do tend to be pretty 00:07:00.87000:07:00.880 annoying and one more thing I should 00:07:04.17000:07:04.180 point out that will make a difference is 00:07:05.70000:07:05.710 your venting if you have a 00:07:07.89000:07:07.900 high-efficiency furnace you'll have 00:07:09.45000:07:09.460 plastic venting the PVC pipes either 00:07:12.02900:07:12.039 white or black coming out of your 00:07:13.74000:07:13.750 furnace generally that'll be - sometimes 00:07:15.74900:07:15.759 I'll just be 00:07:16.50000:07:16.510 or you'll have steel venting like this 00:07:18.84000:07:18.850 going out or chimney the steel vented 00:07:21.00000:07:21.010 furnaces are 80 percenters and then the 00:07:23.34000:07:23.350 PVC vented ones are 90 percent efficient 00:07:25.59000:07:25.600 the 80 percent furnaces like mine right 00:07:27.87000:07:27.880 here the burner box is open and you can 00:07:30.39000:07:30.400 see everything whereas on the high 00:07:32.34000:07:32.350 efficiency furnaces the burner chamber 00:07:34.83000:07:34.840 is usually sealed up so it'll have a 00:07:37.23000:07:37.240 cover over it and generally that's just 00:07:39.12000:07:39.130 held in by five or six screws you take 00:07:41.82000:07:41.830 all those screws out and you can pop 00:07:43.26000:07:43.270 that cover off and then you'll see all 00:07:45.06000:07:45.070 your burners right there but I am 00:07:46.92000:07:46.930 totally sidetracking anyways we cleaned 00:07:48.78000:07:48.790 our flame sensors shined it up now we 00:07:51.33000:07:51.340 turn our power back on and see if 00:07:54.66000:07:54.670 that'll make a difference for us so once 00:07:57.54000:07:57.550 again the inducer comes on the pressure 00:07:59.73000:07:59.740 switches proof draft the Control Board 00:08:03.27000:08:03.280 will send 120 volts to the igniter and 00:08:05.13000:08:05.140 you can see glowing right there then the 00:08:08.01000:08:08.020 gas valve will open up 00:08:09.27000:08:09.28000:08:14.29000:08:14.300 the flames light 00:08:16.61000:08:16.620 and now my flame sensor now that it's 00:08:19.07000:08:19.080 clean 00:08:19.58000:08:19.590 is sensing the flame and just if you're 00:08:21.77000:08:21.780 curious how it works basically the 00:08:24.11000:08:24.120 control board sends the flame sensor 00:08:26.11000:08:26.120 anywhere from 50 to usually a hundred 00:08:29.96000:08:29.970 twenty volts mine's about sixty volts 00:08:32.57000:08:32.580 usually it's about ninety on most 00:08:34.34000:08:34.350 furnaces it sends voltage to this flame 00:08:37.07000:08:37.080 sensor and that voltage actually jumps 00:08:39.89000:08:39.900 from the flame sensor onto the flame and 00:08:42.14000:08:42.150 to the burner phase to make a connection 00:08:45.05000:08:45.060 to ground and the control board senses 00:08:47.15000:08:47.160 that voltage drop and it keeps the 00:08:49.01000:08:49.020 furnace on now if the flame sensor is 00:08:51.14000:08:51.150 dirty it prevents that voltage from 00:08:53.63000:08:53.640 making that jump on to the flame and 00:08:55.43000:08:55.440 onto the burner so it turns off the gas 00:08:57.38000:08:57.390 valve and shuts everything out well as 00:08:59.36000:08:59.370 you can see my burners are staying on 00:09:01.28000:09:01.290 problem is fixed well guys I hope you 00:09:03.53000:09:03.540 found this video helpful just so you 00:09:05.33000:09:05.340 know this video is a condensed version I 00:09:07.19000:09:07.200 have another video where I talk a lot 00:09:09.08000:09:09.090 more about this and go into the more of 00:09:11.03000:09:11.040 the technical issues and other problems 00:09:13.22000:09:13.230 you can encounter while doing this and 00:09:14.87000:09:14.880 more tips and tricks involved with the 00:09:17.18000:09:17.190 flame sensor so if you want some more 00:09:18.80000:09:18.810 info about the flame sensor and issues 00:09:20.57000:09:20.580 regarding that do check that video out 00:09:22.64000:09:22.650 and if you have any other tips or 00:09:24.56000:09:24.570 suggestions please do share with 00:09:26.03000:09:26.040 everybody in the comments below for 00:09:27.44000:09:27.450 everybody else that's viewing this video 00:09:28.88000:09:28.890 that will be much appreciated thank you 00:09:31.01000:09:31.020 so much for watching don't forget to 00:09:32.27000:09:32.280 match that like button on the way out 00:09:33.56000:09:33.570 and I'll see you next time for those of 00:09:36.23000:09:36.240 you that watch this video all the way 00:09:37.79000:09:37.800 till the end I want to share a quick tip 00:09:39.32000:09:39.330 with you that I learned recently so if 00:09:41.18000:09:41.190 you have a baby sleeping somewhere in 00:09:42.65000:09:42.660 the house or if somebody's sleeping in 00:09:44.60000:09:44.610 the next room and you really don't want 00:09:45.77000:09:45.780 to wake them up but like always 00:09:47.75000:09:47.760 you really gotta sneeze one way that's 00:09:50.09000:09:50.100 been working for me all the time to stop 00:09:52.07000:09:52.080 the sneeze all you gotta do is rub right 00:09:54.53000:09:54.540 below your nose or right above the upper 00:09:56.60000:09:56.610 lip and that will totally interrupt your 00:09:59.03000:09:59.040 sneeze it's almost disappointing you 00:10:00.68000:10:00.690 know how its satisfying after you sneeze 00:10:02.45000:10:02.460 you're like you rub this and it just 00:10:05.33000:10:05.340 stops and you're like man you know you 00:10:06.83000:10:06.840 just missed out on that sneeze but you 00:10:08.99000:10:09.000 didn't wake up the sleeping person in 00:10:10.43000:10:10.440 the other room so do give this a try and 00:10:12.65000:10:12.660 let me know how it goes 00:10:16.60000:10:16.610 you 00:10:27.90000:10:27.910
Office location
Engineering company LOTUS®
Russia, Ekaterinburg, Lunacharskogo street, 240/12