We got trouble again we’ve got a tankless water heater in fact we have two of them the one up of the other day sprung a leak not exactly sure wind and it was a small leak but after further examination looked like the leak had been present for some time because there was calcium deposit at the bottom of the the heating unit so we contacted the company that installed it and it was out of warranty it’s about over two years old the company who manufactured it will support the parts but they wouldn’t replace the unit totally unless we played a pretty big fee for it but they would supply the parts without for not too much money actually although they wanted about $160 deposit to ensure that.
I returned the parts to him so anyway I decided to go that route we’re gonna get the parts for their deposit and once we replace the parts send it back to the company and they’ll refund us our deposit so what I thought I’d do is make this video of how to fix a tankless water heater and the first thing you have to know about that is to when you troubleshoot it and everything you’ve got to make sure the power is off now my case I’ve got a load center here in my garage that is the first circuit breaker and then next to the water heater itself there’s another set of breakers so you’re not gonna get hurt doing this job if you kill the power to it so that’s what I’m gonna do I don’t want to get hurt so anyway take a tight shot in here at my load center and I’ve got two tankless water heaters one over here’s.
Two circuits for it and then two circuits for the for the one that we’re going to work on these are actually four breakers they’re marked as 60 amp breakers and it takes four of them believe it or not to run this one I think it’s a 28 kW tankless water heater it takes four circuits there to gang them up and so it’s 2 to 20 volt circuits and so you want to make sure those things are turned off and in the commercial business I do some commercial work for some large companies and they have a system they call lockout tagout this particular load Center doesn’t have a way really to lockout and tagout these breakers so I’m just going to mark them with some tape and close the door and put some tape on it so that nobody by mistake comes along and turns those things on well I don’t want it on so anyway that’s the load Center in the garage make sure the power is off before you do any work on this tankless water heater ok ok/
Well here we are in the closet where the tankless water heater is and now the first thing we did we through the breakers in the garage in the load Center and this has two sub panels here in the closet it’s got in there mark circuit one two circuit three and four and of course you want to make sure they’re they’re all off ok so that’s handy it’s right here in front of our face it’s pretty obvious and we’re not going to be turning those on while we’ve got these we’re working with this with this system okay so now that it’s powered off we’re gonna have to disconnect a lot of these cables while he’s wired or so what I did was I went around to each one of them each one of the wires and I marked it I either put in a little wire marker tag like this it’s like a ziploc tie cable tie but you can write a name on it as to what it is and then sit block it to the cable itself.
I’ve got some of these wire markers a little pre-printed wire marketers that you can take off here and and then wrap around each one of the wires and give it a special number so that’s what I’ve done on all the wires on this box getting ready to disconnect the the PC board it controls this whole thing and once that’s taken off disconnected and taken off then we can remove the tank you can see up here it’s plumbed here’s our water input or cold water input comes in to the tankless water heater heats up and then goes out with this red line here that’s hot water so the problem was it was leaking right here on this this one chamber is leaking they’re coming down here and if you can see it but it’s left some calcium deposits here in the bottom of this case so now that it’s all marked I’m going to disconnect the cables and pull up PC board and that’ll be the next step okay here we are with the PC board removed.
There’s just four screws on the PC board and four screws for those high-powered I think they’re Triax that you’re supposed to use heat sink compound when you put them back on so no white heat sink compound seem to be plenty of it on there but you can get that stuff at RadioShack it’s pretty common it’s just called heat sink compound it’s white and you don’t want to get on your clothes but it’s like a little white paste like toothpaste kind of but don’t use toothpaste okay so that’s the tankless water heater with the PC board slash brains high power controller removed okay I got a couple of Crescent wrenches and we’re gonna disconnect the plumbing right now so we’ve got a small crescent wrench for this bottom nut okay and then a large one for this top one we’ll just loosen that up a little Union fitting here okay like so we’ll do that on both sides all right and that’ll that will free the plumbing from the the tanks of the other wire here okay we’ve got the two lower screws of the tank taking off.
So I’ll just take off the top two screws you can see we’ve got the unions that’s connected up here for the cold water and hot water out and the two screws and I’ll be holding this tank in my hands so let me give that a try I got you okay got this thing in my hand down we’re going to take it out and put on a bench okay okay this has four screws back here that’s holding it in its case so I have to remove that to get the sheet metal out from around the tank so let’s go ahead and do that I’ll zoom this in so you can get a little closer look at it okay I think once we take these four screws out just got my I guess they call that keyhole slot loosen them and you can just pick it up out of it it’ll pick up I’ll just go ahead and take them out okay all right well you got a couple things hold me back here is a ground wire I forgot to take off so I’m gonna have to go ahead and do that but this uses one of our ground wire right here I’ve got take off or I’d be holding tank in my hand so we’ll do that and I’ll get back to you okay we got one wire to take off here this is,
One of those nylon lock nuts so I got a wrench here and hold this hose and just baby unscrewed and that’s holy ground love to so remind me to put that back together so I’m gonna just keep it all together here right now now we won’t get away from in okay see it’s one of those nylon lock nuts so they’re great once you tighten them up thee they never never come loose by themselves so they’re fantastic so here we are you got this baby out of the case and you can see the tanks here are in halves are bolted together and they’ve given us both tanks but we’ve got to take these end caps off for the plumbing fittings so that’s our next job done bolt up from the from the tanks and both these old side pieces onto the new tank okay this should be fun you know when I called the factory about this water heater was leaking and we were talking about prices and stuff when we decided to just go ahead and send me the tank and that was leaking and basically I was fixing it fix it from there.
They did send me a few gaskets to go with it they call this the chamber body assembly for CH 10k and they sent it FedEx which was nicely they got to it pretty quick it’s that from szybko se is Co international in Houston Texas they call it the global leader in tankless technology well the way this thing broke I’m not sure that I won’t agree with that but I’ll hold judgment right now it should never have cracked it shouldn’t have leaked and to be first class I think they should have just sent me a whole new assembly instead of the parts to fix it but I can understand so we’ll give this a try they did give me an option I think I could buy a new one for 360 bucks or something like that or I could get the parts for free and hire a plumber or or do it myself so I decided to give it a shot and if all else fails I got a plumber and standby so we’ll see how it goes this kind of could be eliminar strings but they basically want to remove all the components from here and put it on to the new tank and so that’s what I’m gonna try and do here okay I might as well just let the tape run I’ve got a long tape so I’ll just let it run and I’ll probably be fast-forwarding this section but at least let you guys see what’s going on and how to do it maybe in the fast-forward fashion there may be a few chuckles in between.