No Hot Water – Replace the Thermocouple – Heater with Sealed Combustion Chamber



to cover the steps on how to change a thermocouple on a hot water tank with a sealed combustion unit so the first step is we're going to remove this outer cover just by squeezing it together and this reveals the sealed chamber so in this case all we need is an Allen wrench and we're going to loosen and remove these four screws to get access to the burner or remove the four screws and now this is loosened the sealed chamber so the next thing we're going to do is we're going to use an adjustable wrench with smooth teeth so we don't do damage to these nuts it's a very soft metal on this gas control now what you want to do is make sure that you've turned off your gas on the gas control and you can also turn off the gas on the main valve going to the hot water tank now what we're going to do is we're going to loosen this tube that goes to the pilot and you've got to be very careful because this is a small delicate metal here we're going to loosen the nut that goes to the main burner tube and then we're going to loosen the nut to the thermal now that you've loosened these three nuts we're going to just pull it down gently again you need to be very careful with the soft metal and we're going to loosen all three and you can see the chamber is loose so now we need to remove this igniter and in most cases it just takes a screwdriver on the edge and give it a little tap and it's going to loosen it and this just pulls away like this and now we're going to be able to pull out burner here just like this and this is going to allow us to do a couple things one is easy access to the old thermocouple and also allows us to knock off any debris and it's going to give us a better flame when we connect it so now I'll loosen up the thermocouple and in most cases it just pulls free and you can see here it's held in by a bracket and we're just going to apply light pressure on the back of the thermocouple and by putting a little pressure on this we're going to pull it free now in this bracket there's a little compression fitting that this fits into so once it's pulled free now we have to work it through this gasket on the front of the door and so we just straighten it out and pull it up to the gasket and we're just going to pull it through and if it and if it gives you any trouble what we can do is we can also take a razor knife and we can cut just a slice in this pull it free and when it compresses and we put it back into the door it's going to close that off so now I'll pull this off and we'll grab the new thermocouple alright we have the new thermocouple and we remove the old one and we're going to push this back through and into the bracket and we always want to make sure the tip of this is setting in the flame of the pilot and this is our safety to make sure that if the flame the pilot were to go out it shuts off the gas control and this is actually slightly longer than the old thermocouple and that's not a problem to long isn't a bad thing we'll connect this and then any excess we'll just have it curled up underneath the gas control so now we just take the thermocouple and we push it into the bracket and we push it into that compression fitting and we're going to slide it down and in this case we should be able to just seat it all the way up and that's going to allow you can see that this is the burner for the pilot and this tip is going to be in that flame which we need to have so now we're just going to push this into place and we'll take the burner and we'll put it back into the combustion chamber and then screw on our four screws I have the four screws on this inside cover and we've got this seal tight next thing we're going to do is we're going to take our adjustable wrench and we're going to first by hand we're going to tighten these three nuts again it's very soft metal so we're going to tighten it by hand and then we're going to just snug it using this wrench and you can see the excess from this thermocouple is just going to be coiled here and so getting a thermocouple that's a little longer isn't going to hurt you so now we'll tighten this up and we'll go to the next step I tighten the three nuts to the gas control and I put back on our igniter so I snug them up I didn't want to go crazy because you need to be careful with those nuts now we're going to turn on the main gas and we're going to turn our gas control to pilot we're going to push down the red button and we're going to hold it tight against the gas control and any air that's in the tube has to be bled out and so we'll hold this for a few seconds and then we're going to use our igniter and check through your sight hole and now the the pilot is lit we need to hold this for about a minute what needs to happen is this thermocouple the tip of it needs to be hot enough so it's telling the gas control that the pilot is on so we'll hold this for about a minute and then we'll release it and once the thermocouple heats up it'll tell the gas control that it's operating properly and then we're going to turn it to the on position so I released this the pilot is staying on now we're going to turn it to on and the burner will go on as soon as the water cools down it's not calling for right now but what you want to do once your burner ignites and it's actually drawing gas what you want to do is you want to take a spray bottle with a little bit of soapy water in it and you want to spray on these nuts here to the pilot and also the nut to the burner and when it's drawing gas if you haven't tighten these tight enough then what will happen is you'll see it blowing little bubbles and then you'll need to do put just a little tighter turn on these two nuts but that's all there is to it if you have a hot water tank with a sealed combustion unit those are the steps to change a thermocouple

22 Comments

  • D M

    April 15, 2019

    Excellent!

    Reply
  • Greg Rishel

    April 15, 2019

    Perhaps, you might teach them how to trouble shoot their issue. …..so they won't waist time changing out what might be a perfectly good thermacouple…..just saying

    Reply
  • Frank M

    April 15, 2019

    Having a hard time loosening the bolt to the pilot ?

    Reply
  • EИDERS

    April 15, 2019

    This video got my ass into a lot of hot water with my family. :3

    Reply
  • Eric Peters

    April 15, 2019

    2019 and this did the trick on a GE model from 2011.
    Awesome video, thanks for the info!

    Reply
  • Elida Ledesma

    April 15, 2019

    Just changed it the exact way video says to so
    I light pilot hold for minutes and light still goes out.. what am i doing wrong?

    Reply
  • gerohan salas

    April 15, 2019

    ok so would a universal thermo couple work or do uyou have a part no# ??? mine is a ge GG40T06AVG01

    Reply
  • David V

    April 15, 2019

    I changed my thermocouple with a universal part but then my pilot light wouldn’t stay lit. I ended up cleaning the old thermocouple with some sandpaper and put it back in. Now the pilot stays lit but my flame is yellow and orange. Should I be worried that something else is wrong with the system? Is it burning too hot? Do I need to clean the burner and combustion chamber better? Is this possibly a venting issue?

    Reply
  • XavierKatzone

    April 15, 2019

    Very nicely done!

    Reply
  • Antione Keeling

    April 15, 2019

    That helped a lot thank*-*

    Reply
  • Robert Burris

    April 15, 2019

    Igniter pops but flame doesn't come on

    Reply
  • sandravd

    April 15, 2019

    Easy, straight forward installation.>>>ur2.pl/1103 We installed this in our 2 bedroom 1 bath cottage in Northern WI and I set this to 120. Water is HOT! Compact and takes up almost no space at all and it doesn't make a single sound. I thought there would be a slight "hum" but you don't even know it's there

    Reply
  • Brother Barry

    April 15, 2019

    So appreciate your video. So helpful. Thanks so much. No hot water last night fixed by 8:30 this morning. Thanks again.

    Reply
  • SuperJoe818

    April 15, 2019

    Thank you very much for sharing this video with us, it saved me the day and a new water heater. I fixed it following your instructions. All the best to you sir!

    Reply
  • Adam West

    April 15, 2019

    What if I don't have a release button like you have in the video

    Reply
  • Derek Dennis

    April 15, 2019

    Wife was getting ready to go out and buy a whole new water heater. This video saved me several hundreds of dollars. Thank you.

    Reply
  • Bob Miller

    April 15, 2019

    You could simply cut the old thermouple instead of slicing the grommet when pulling it out. After all, if you're doing this, your replacing it. The new one should push through the grommet easier than when pulling it out.

    Reply
  • David Flannagan

    April 15, 2019

    thanks

    Reply
  • fuct001

    April 15, 2019

    Replaced it but my pilot still wont stay lit and its really pissing me off

    Reply
  • Laticia Cull

    April 15, 2019

    I did something similar with Avasva solutions.

    Reply
  • Victor Rodriguez

    April 15, 2019

    Anyone know what’s wrong if the igniter doesn’t spark

    Reply
  • Bertha Macias

    April 15, 2019

    Thank you very much. Saved us lots of time and money.?

    Reply

Leave a Reply