00:00:01.970 hi everyone today go look at 00:00:05.01900:00:05.029 thermocouples on boilers the old device 00:00:08.96000:00:08.970 and when they fell your boiler will not 00:00:11.90000:00:11.910 stay on so if you've got a boiler and 00:00:14.15000:00:14.160 you find when you travel out the pilot 00:00:16.55000:00:16.560 that it goes straight out as soon as you 00:00:18.89000:00:18.900 let go of the button then you've got 00:00:21.38000:00:21.390 what's normally a thermocouple problem 00:00:23.57000:00:23.580 this is the most common problem with 00:00:26.12000:00:26.130 boilers I think the most common cause of 00:00:28.13000:00:28.140 false that there is when the old pilot 00:00:30.71000:00:30.720 will not stay on and when you let go to 00:00:33.92000:00:33.930 fire the boiler it doesn't go we've got 00:00:37.10000:00:37.110 an electronic ignition one and it clicks 00:00:39.65000:00:39.660 away and then at the end it doesn't fire 00:00:42.35000:00:42.360 up so this little device is not a lot of 00:00:44.75000:00:44.760 money very very cheap specially the 00:00:46.76000:00:46.770 universe one so I'm going to show you an 00:00:48.97900:00:48.989 old boy I've got now and show you the 00:00:50.51000:00:50.520 device now easier it is to change it 00:00:52.77900:00:52.789 obviously you won't be able to do that 00:00:54.88900:00:54.899 because it's a gas safe job you could be 00:00:57.41000:00:57.420 registered to do it my fraid but it is 00:00:59.72000:00:59.730 interesting to show you how exactly it's 00:01:02.54000:01:02.550 done and what an engineer will do if you 00:01:04.75900:01:04.769 do have this particular problem so I'm 00:01:07.88000:01:07.890 going to go indoors and leave this 00:01:09.53000:01:09.540 lovely sunny day in August and get back 00:01:13.25000:01:13.260 to work and we well here we are 00:01:16.96900:01:16.979 my old garage got an old boiler down 00:01:19.19000:01:19.200 here and I'll glowworm it used to be the 00:01:21.71000:01:21.720 inset type of boiler behind a gas fire 00:01:24.23000:01:24.240 and been kicking around for years still 00:01:26.84000:01:26.850 use it for Spears and there is our 00:01:29.53900:01:29.549 thermocouple there that's here but with 00:01:32.09000:01:32.100 him near now this particular devices an 00:01:34.96900:01:34.979 oxy thermocouple they call it because it 00:01:37.06900:01:37.079 it takes oxygen up this tube and it puts 00:01:40.76000:01:40.770 a flame out that way that hits the pilot 00:01:43.37000:01:43.380 and a flamer up that way to light the 00:01:46.60900:01:46.619 boiler and what happens is this tube 00:01:49.39900:01:49.409 down here I'll pull it off nice gesture 00:01:52.99900:01:53.009 open tube that tube goes up to the top 00:01:55.99900:01:56.009 of the boiler and if the air is polluted 00:01:59.42000:01:59.430 with fumes you've got a block flue or 00:02:01.76000:02:01.770 it's not burning properly then what 00:02:04.55000:02:04.560 happens is the airs not right for the 00:02:06.67900:02:06.689 pilot assembly here and it lifts away 00:02:09.08000:02:09.090 once it lifts away from there 00:02:11.33000:02:11.340 it obviously goes out the boiler goes 00:02:14.11900:02:14.129 out that flame could be playing on there 00:02:15.94900:02:15.959 so with this particular oxy one it can 00:02:18.80000:02:18.810 be a problem with air and bur boiler not 00:02:21.29000:02:21.300 actually burning properly that's just 00:02:23.24000:02:23.250 something this particular one but that's 00:02:24.61900:02:24.629 just this particular model knows very 00:02:26.86900:02:26.879 few T's type about today I think with 00:02:29.80900:02:29.819 the oxy type thermocouple so there's 00:02:32.69000:02:32.700 what I was talking about with the 00:02:34.28000:02:34.290 particular one I'm working on there you 00:02:36.38000:02:36.390 can see that if the flames right it 00:02:38.78000:02:38.790 comes out there and plays on the 00:02:40.55000:02:40.560 thermocouple there and that light stays 00:02:43.16000:02:43.170 up there to light the flame for the 00:02:44.78000:02:44.790 burner and if the air is wrong then you 00:02:48.02000:02:48.030 can see what happens the flame would 00:02:49.43000:02:49.440 lifts off that thermocouple and no 00:02:51.92000:02:51.930 longer plays on it which means a boiler 00:02:53.66000:02:53.670 will not lie under any circumstances 00:02:55.46000:02:55.470 there's a thermocouple when it goes down 00:02:58.03900:02:58.049 they're crushed to a gas valve here and 00:03:01.61000:03:01.620 as you look down there you can see it 00:03:03.74000:03:03.750 going in the back of the housing 00:03:06.17000:03:06.180 therefore the gas valve so it's quite a 00:03:08.39000:03:08.400 simple little job to take it out there 00:03:09.89000:03:09.900 gas food has got I'm sorry that you 00:03:11.83900:03:11.849 won't be able to do this but I'm just 00:03:12.97900:03:12.989 showing you this on the workbench as an 00:03:15.11000:03:15.120 example and as you can see you just undo 00:03:18.02000:03:18.030 this nut here with the correct spanner 00:03:27.49000:03:27.500 this particular type probably more 00:03:30.34900:03:30.359 recommended to renew the home housing 00:03:32.12000:03:32.130 when you buy these this one you do get 00:03:34.94000:03:34.950 this whole block together but I'm just 00:03:37.25000:03:37.260 showing it to you the therm over this is 00:03:39.47000:03:39.480 the same arrangement with most water 00:03:41.08900:03:41.099 system um so it's coming out and then 00:03:44.03000:03:44.040 I'm doing off the back end of their back 00:03:46.75900:03:46.769 joint down there get that one off nuke 00:03:50.03000:03:50.040 pretty easy 00:03:53.60000:03:53.610 so here we have a general purpose 00:03:56.44000:03:56.450 thermocouple and this is the type of see 00:03:58.31000:03:58.320 most boilers and these are relatively 00:04:00.53000:04:00.540 cheap by that I mean not much more than 00:04:02.75000:04:02.760 about 10 to 15 pounds and you can get 00:04:05.90000:04:05.910 them Universal with different nuts on 00:04:07.58000:04:07.590 the end of that sleeve there that slide 00:04:09.80000:04:09.810 on to fit mini boilers so if you are 00:04:12.68000:04:12.690 having your boiler done by an engineer 00:04:15.47000:04:15.480 having in the thermocouple replace do 00:04:18.25900:04:18.269 remember it's closing off money and they 00:04:20.36000:04:20.370 shouldn't be charging you a fortune for 00:04:22.55000:04:22.560 this little job and I say it's only if 00:04:25.31000:04:25.320 the pilot just keep going out if it does 00:04:27.77000:04:27.780 not stay on under any circumstances 00:04:29.66000:04:29.670 where it's electrum ignition or 00:04:31.64000:04:31.650 push-button and you've got to hold the 00:04:33.74000:04:33.750 button in this is normally the cause I'm 00:04:36.74000:04:36.750 not saying all the time it can be the 00:04:38.06000:04:38.070 gas valve but most times this is the 00:04:41.45000:04:41.460 course so just bear that in mind when 00:04:43.82000:04:43.830 you're having your boiler service I'm 00:04:45.71000:04:45.720 sorry you are going to do it as I say 00:04:47.36000:04:47.370 are you've got to be guests safe 00:04:48.92000:04:48.930 registered to do it I'm just showing you 00:04:50.87000:04:50.880 this little job an old boiler in mike 00:04:52.37000:04:52.380 geary's has been decommissioned for 00:04:54.02000:04:54.030 years I think this is example show you 00:04:57.08000:04:57.090 that it's quite an easel job in reality 00:04:59.75000:04:59.760 so there we are as more of an 00:05:02.15000:05:02.160 information video than anything okay 00:05:04.19000:05:04.200 just to show you all about thermocouples 00:05:07.01000:05:07.020 I last about them by someone who's 00:05:08.84000:05:08.850 inquired newsboy I was always going out 00:05:10.61000:05:10.620 when ignition stopped or someone else 00:05:13.15900:05:13.169 when tip finger came off the burner 00:05:14.93000:05:14.940 buttons and it let go the pilot went 00:05:16.70000:05:16.710 outside just with your spatula it's not 00:05:18.62000:05:18.630 such a difficult job you're funny you're 00:05:20.39000:05:20.400 allowed to do it but there you go and 00:05:22.25000:05:22.260 well as you can see the weather's 00:05:24.86000:05:24.870 changed a little bit it's not quite as 00:05:26.45000:05:26.460 nice it was when we first shot the 00:05:28.04000:05:28.050 opening seamless this video but never 00:05:30.20000:05:30.210 mind 00:05:30.59000:05:30.600 weather in England it's about to change 00:05:33.11000:05:33.120 him doesn't it just always vote for me 00:05:35.53000:05:35.540 on this a little bit of a drier horrible 00:05:38.93000:05:38.940 a day catch again don't get poor videos 00:05:42.62000:05:42.630 dirt and three three keep the fav guys 00:05:45.08000:05:45.090 keep watching bye bye 00:05:51.07000:05:51.080 you
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