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No hot water or Heating - Part 2 boiler components

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Language: en

00:00:06.109
well welcome back to part 2 of fun
00:00:08.450 00:00:08.460 finding and using multimeter so this is
00:00:10.339 00:00:10.349 about a 5 6 7 year-old boiler now that
00:00:12.530 00:00:12.540 I've got displaying the workshop just to
00:00:14.660 00:00:14.670 show you all the top got an air pressure
00:00:16.490 00:00:16.500 switch oversight put the micro switch on
00:00:22.820 00:00:22.830 side I went through on par one had to
00:00:29.240 00:00:29.250 use that set your multimeter to the
00:00:31.880 00:00:31.890 speaker's continuity non-inclusion on
00:00:35.299 00:00:35.309 the open painting from calm which is
00:00:39.830 00:00:39.840 live in get the tubes going from the fan
00:00:46.119 00:00:46.129 so to test this blowdown it
00:00:53.350 00:00:53.360 you should work you have a fan here as
00:00:58.360 00:00:58.370 well 10 speeds off we'll be careful then
00:01:05.830 00:01:05.840 we take the Spades off you don't hang
00:01:07.090 00:01:07.100 them off here Nicky check various
00:01:10.090 00:01:10.100 resistance there in part one I mentioned
00:01:21.219 00:01:21.229 if you have no hot water the issue could
00:01:24.040 00:01:24.050 be the diverter valve Allah mentioned
00:01:26.200 00:01:26.210 the microswitch and the shaft moving up
00:01:27.820 00:01:27.830 and down and the rubber diaphragm how it
00:01:30.460 00:01:30.470 could be worn and split not moving up on
00:01:32.529 00:01:32.539 this boiler we have a three-way valve an
00:01:35.469 00:01:35.479 actuator
00:01:36.130 00:01:36.140 I wanna guess the message that you need
00:01:38.109 00:01:38.119 hot water it opens up here is a 3-way
00:01:41.380 00:01:41.390 actuator and it opens up and so
00:01:56.830 00:01:56.840 so you can check if your water is
00:01:59.770 00:01:59.780 working by turning the tap on and seeing
00:02:02.950 00:02:02.960 if this moves up and down he's not
00:02:07.630 00:02:07.640 moving
00:02:08.260 00:02:08.270 you need to check the wiring following
00:02:11.500 00:02:11.510 back to the PCB and check if it's
00:02:14.080 00:02:14.090 getting the call back if it is moving
00:02:19.320 00:02:19.330 you know there's a problem somewhere our
00:02:21.640 00:02:21.650 servant sequence
00:02:30.610 00:02:30.620 and there you have the shaft that moves
00:02:35.780 00:02:35.790 up and down and that has actually seized
00:02:39.729 00:02:39.739 rock hard
00:02:49.560 00:02:49.570 here in the flow switch so for a boiler
00:02:53.950 00:02:53.960 to sense the activation of the whole
00:02:56.380 00:02:56.390 water flowing is very stern eat one boy
00:02:59.470 00:02:59.480 is about like a turbine like an impeller
00:03:02.260 00:03:02.270 and the first time fella goes more
00:03:04.300 00:03:04.310 voltage will met larger message he sends
00:03:06.220 00:03:06.230 to the PCB this is got flow switch
00:03:08.850 00:03:08.860 always have the brass valve I've over by
00:03:12.040 00:03:12.050 mentioning port one that's a flow switch
00:03:14.080 00:03:14.090 they get filthy you can only clean them
00:03:17.790 00:03:17.800 here we have the thermistor so mention
00:03:23.890 00:03:23.900 this to mr. import one he more to me to
00:03:30.880 00:03:30.890 set it to 20 K put it on the horseshoe
00:03:36.670 00:03:36.680 setting on the left and both probes
00:03:40.230 00:03:40.240 bring that help line up say right what
00:03:43.000 00:03:43.010 should it be when cold Washington be
00:03:45.820 00:03:45.830 with hot air worse that is there just
00:03:54.160 00:03:54.170 here we have a high lemme start so again
00:03:56.770 00:03:56.780 for this you'll check up continuity the
00:04:00.220 00:04:00.230 speaker setting on the multimeter you
00:04:02.560 00:04:02.570 can always pop it a graphite grease on
00:04:04.240 00:04:04.250 there just to cool it down case gets too
00:04:05.830 00:04:05.840 hot only a small amount though so a lot
00:04:09.580 00:04:09.590 of modern boilers if the fan assisted
00:04:11.590 00:04:11.600 the more than Rd got a fan still can
00:04:14.350 00:04:14.360 have a an air pressure switch this is
00:04:16.750 00:04:16.760 one here so we'll do a little wiring
00:04:19.690 00:04:19.700 diagram for you now tip calm
00:04:27.420 00:04:27.430 which is live pensee hello the live will
00:04:40.770 00:04:40.780 go straight through
00:04:41.840 00:04:41.850 now that stands for normally closed okay
00:04:54.110 00:04:54.120 so the boil is often the fans not
00:04:56.279 00:04:56.289 running you'll see live there when the
00:05:01.320 00:05:01.330 fan is running the live supply will
00:05:04.080 00:05:04.090 switch to the normally open if your
00:05:16.200 00:05:16.210 boiler is doing absolutely nothing
00:05:18.710 00:05:18.720 then the pressure switch which is that
00:05:21.540 00:05:21.550 component there will be seized in the
00:05:24.480 00:05:24.490 closed position
00:05:26.659 00:05:26.669 there's an air pressure switch you can
00:05:31.770 00:05:31.780 see the three Spade connections there in
00:05:33.719 00:05:33.729 this scenario
00:05:35.430 00:05:35.440 just labeled one two and three and we
00:05:43.379 00:05:43.389 have the tubes so tubes always trigger
00:05:46.680 00:05:46.690 they're free because some of them do
00:05:49.080 00:05:49.090 have little nipples inside that you can
00:05:50.820 00:05:50.830 free open or filters so you're so
00:05:55.649 00:05:55.659 working on the air pressure switch I've
00:05:59.219 00:05:59.229 collected the template piece of hose so
00:06:00.990 00:06:01.000 this hose will actually link on to the
00:06:03.570 00:06:03.580 fan and the fan would blow a force down
00:06:07.399 00:06:07.409 and you'll switch from normally closed
00:06:11.490 00:06:11.500 to non the open
00:06:16.450 00:06:16.460 so to confirm is going to normally open
00:06:19.339 00:06:19.349 I'm going to set the more to meet you on
00:06:21.439 00:06:21.449 the speaker the continuity now so this
00:06:30.469 00:06:30.479 should be make a noise now it's not the
00:06:34.549 00:06:34.559 microswitch
00:06:35.179 00:06:35.189 should be closed in the NO position off
00:06:40.689 00:06:40.699 so now I'm going to blow in this tube
00:06:43.040 00:06:43.050 just to simulate the air pressure switch
00:06:45.049 00:06:45.059 and I should get continuity across the
00:06:49.510 00:06:49.520 com2 the normally open
00:07:22.790 00:07:22.800 so discussing electrodes here we have a
00:07:25.409 00:07:25.419 few old type so when you get old the
00:07:29.850 00:07:29.860 warp this one has warped so the gap will
00:07:37.020 00:07:37.030 have changed the manufacturer's
00:07:38.040 00:07:38.050 instructions so this pot will probably
00:07:40.379 00:07:40.389 not work there's a little crack in the
00:07:42.900 00:07:42.910 ceramic and the cable is torn
00:07:45.770 00:07:45.780 so this cable is torn here it'll be
00:07:48.330 00:07:48.340 losing rectification through a member
00:07:50.790 00:07:50.800 house heat as well on this one the
00:07:56.730 00:07:56.740 gasket was damaged so it was shorting
00:08:00.150 00:08:00.160 across the spot wasn't going through so
00:08:02.219 00:08:02.229 remember this is where we go through the
00:08:04.980 00:08:04.990 process of converting AC to DC using
00:08:08.370 00:08:08.380 micro volts this is water as well the
00:08:13.980 00:08:13.990 gap is different to manufacture
00:08:15.089 00:08:15.099 instructions and the metal has had a
00:08:17.010 00:08:17.020 material breakdown as well so this is
00:08:19.980 00:08:19.990 another faulty one now you can check
00:08:22.140 00:08:22.150 these B's don't always have to look fall
00:08:24.360 00:08:24.370 to your one to cause an overall problem
00:08:27.990 00:08:28.000 so what you do is you go to your
00:08:29.670 00:08:29.680 multimeter you set it on this setting
00:08:32.790 00:08:32.800 below
00:08:39.920 00:08:39.930 can you neutral back to the other side
00:08:43.170 00:08:43.180 of the lead and you connect this to a
00:08:45.660 00:08:45.670 spade joint and you should get six to
00:08:53.130 00:08:53.140 eleven microvolt some appliances you go
00:08:59.820 00:08:59.830 to the dashboard and you'll tell you
00:09:03.470 00:09:03.480 PCBs obviously if you have a boiler
00:09:06.150 00:09:06.160 that's not responding at all
00:09:07.920 00:09:07.930 it could be a jammed air pressure switch
00:09:09.570 00:09:09.580 or high lemme start low pressure it
00:09:12.780 00:09:12.790 could be a reset button or take with a
00:09:15.000 00:09:15.010 PCB so always look at the PCB visually
00:09:17.400 00:09:17.410 inspect it check for birds here we've
00:09:19.350 00:09:19.360 got a few burn marks check for solder
00:09:22.740 00:09:22.750 dried dots also check the internal fuse
00:09:27.570 00:09:27.580 just here we have an internal fuse so
00:09:30.180 00:09:30.190 what I can do is I can remove this fuse
00:09:34.910 00:09:34.920 use a double insulated tools logical
00:09:39.150 00:09:39.160 screwdriver so the symbol for double
00:09:41.130 00:09:41.140 insulated is two squares always take the
00:09:44.910 00:09:44.920 fuse out by the metal section so you
00:09:46.260 00:09:46.270 don't damage it
00:09:47.070 00:09:47.080 take it out multimeter on the speaker
00:09:58.560 00:09:58.570 setting
00:09:59.390 00:09:59.400 continuity what are both ends and in
00:10:06.060 00:10:06.070 this fuse is actually fine you have to
00:10:09.420 00:10:09.430 appreciate with these PCBs they can
00:10:11.430 00:10:11.440 either have a 1 M or - I'm fusing and
00:10:13.800 00:10:13.810 you have to put the correct fuse inside
00:10:15.270 00:10:15.280 whether it's a slow burn on fast burn
00:10:17.160 00:10:17.170 and that's the actual fuse wire some are
00:10:19.650 00:10:19.660 quite like wires and some of my blades
00:10:23.360 00:10:23.370 also as well if you contact the
00:10:25.290 00:10:25.300 manufacturers they'll tell you where you
00:10:27.360 00:10:27.370 have a power supply each exit so for
00:10:30.180 00:10:30.190 example here we have some electrical
00:10:32.960 00:10:32.970 connections heads go to the appliance
00:10:35.070 00:10:35.080 and these are usually labeled as well
00:10:39.020 00:10:39.030 this is x3 etc
00:10:45.090 00:10:45.100 have check earth continuity Sicily Maya
00:10:48.840 00:10:48.850 we have to do an interview and it should
00:10:51.790 00:10:51.800 be naught point naught 1 so one probe on
00:10:55.960 00:10:55.970 the earth one on for example the earth
00:10:58.330 00:10:58.340 earth casing zero because in this case
00:11:04.630 00:11:04.640 it doesn't have far to travel should a
00:11:07.570 00:11:07.580 gas valve go wrong this one is a double
00:11:10.230 00:11:10.240 solenoid say discuss it with the
00:11:15.450 00:11:15.460 manufacturer and always look at where
00:11:17.980 00:11:17.990 they recommend here we have the earth
00:11:20.760 00:11:20.770 eveyone Evi to and calm so you put your
00:11:28.500 00:11:28.510 multimeter probe on the con one on TV
00:11:40.070 00:11:40.080 so the resistance we need for this is
00:11:42.410 00:11:42.420 about eighty 17 for gas Valtor which is
00:11:48.650 00:11:48.660 e V 2 is well roughly the same so the
00:11:54.710 00:11:54.720 resistance for both solenoids is pretty
00:11:58.190 00:11:58.200 similar if your wiring heating systems
00:12:03.139 00:12:03.149 up or you rent them any appliances and
00:12:05.449 00:12:05.459 you see com4 call commas use that alive
00:12:09.440 00:12:09.450 into the appliance or component and
00:12:11.900 00:12:11.910 called
00:12:13.009 00:12:13.019 is usually the live going back out so if
00:12:16.730 00:12:16.740 it's a rim thermostat it will say calm
00:12:18.710 00:12:18.720 the live going in and the cord will be
00:12:21.259 00:12:21.269 the message back to the boiler saying
00:12:22.810 00:12:22.820 pyro this is an automatic air vent
00:12:27.530 00:12:27.540 this is fitted on most sealed systems
00:12:29.180 00:12:29.190 and combination boilers and the tops of
00:12:31.100 00:12:31.110 the exchanger and these usually leak
00:12:34.329 00:12:34.339 viondra quite a lot of pressure and they
00:12:36.829 00:12:36.839 do function quite regularly
00:12:38.090 00:12:38.100 they usually leak when that first
00:12:40.490 00:12:40.500 operates it and they should seal you do
00:12:43.190 00:12:43.200 get several options with these buddy key
00:12:44.690 00:12:44.700 whether you can leave them open to work
00:12:47.690 00:12:47.700 automatically or should them completely
00:12:50.150 00:12:50.160 this is a way you can shoot it
00:12:53.360 00:12:53.370 automatically and open it so always
00:12:57.380 00:12:57.390 check that these aren't dripping when
00:12:59.030 00:12:59.040 you serve some appliance they are quite
00:13:02.420 00:13:02.430 simple but you can do is you don't have
00:13:04.579 00:13:04.589 one a hand
00:13:05.630 00:13:05.640 just unscrew it and lubricate it that
00:13:08.449 00:13:08.459 sort is inside is a little float give it
00:13:11.240 00:13:11.250 a wash put some vaseline or blue
00:13:13.190 00:13:13.200 brocation around the side and set it
00:13:15.800 00:13:15.810 back in
00:13:24.900 00:13:24.910 thermostats ready air valve if your
00:13:27.519 00:13:27.529 heating doesn't work
00:13:28.389 00:13:28.399 probably a wd-40 around that and give it
00:13:31.660 00:13:31.670 a tap and that should seize it for it to
00:13:36.519 00:13:36.529 function again
00:13:37.389 00:13:37.399 now pull pliers on and lift it up if you
00:13:41.199 00:13:41.209 hit down softly it'll put the pin back
00:13:44.730 00:13:44.740 on the washer and they'll even overhaul
00:13:47.769 00:13:47.779 it even better
00:13:48.519 00:13:48.529 always check as well it's not making any
00:13:51.220 00:13:51.230 noises this is a reverse flow slightly
00:13:56.199 00:13:56.209 fitted either way that way or that way
00:14:03.389 00:14:03.399 this side we've got gas clock these are
00:14:06.309 00:14:06.319 fitted on gas Hobbs
00:14:08.170 00:14:08.180 it is law that these gas hogs have
00:14:11.340 00:14:11.350 isolation valves this type of gas cut
00:14:15.610 00:14:15.620 were notorious for leaking at the back
00:14:17.249 00:14:17.259 just give any club and seal it well I
00:14:22.269 00:14:22.279 hope you drilled a little clip subscribe
00:14:24.009 00:14:24.019 get watching my videos take knows and re
00:14:27.309 00:14:27.319 watching be self-confident ask me
00:14:29.920 00:14:29.930 questions and get loads more
00:14:31.360 00:14:31.370 fault-finding

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