Can anyone help me identify this transformer?

[budm]

Re: Can anyone help me identify this transformer?

So you are using two wires and no safety GND ground wire at all. Are you sure that brown wire connected to L2 (N) is actually Neutral not HOT (LINE/PHASE) wire?
And if you check the AC Voltage between GND terminal of the outlet and the NEUTRAL of the OUTLET what do you get?
What do you get between The Hot of the outlet and GND of the outlet?
Your wiring looks confusing with all those red wires and the way one of the brown wire is connected to pin 6. and it does not seem to match your user manual.

[WHaThEFLuX]

Re: Can anyone help me identify this transformer?

AC between NEUTRAL and GND= .140V

AC between HOT and GND= 122V


The brown wire from L2(N) is most definitely connected to Neutral


The other brown wire is connected to pin 5

[budm]

Re: Can anyone help me identify this transformer?

AC between NEUTRAL and GND= .140V

AC between HOT and GND= 122V


The brown wire from L2(N) is most definitely connected to Neutral


The other brown wire is connected to pin 5

So how in the world did you get 230VAC between NEUTRAL and GND that you reported then.
Pin 5 is HOT per the picture of your label.

[WHaThEFLuX]

Re: Can anyone help me identify this transformer?

My apologies, I guess that manual is generic, there are slight variations in the models, this one is a 7897 C.

I'm sure the wiring is correct as I've tested quite a few of them on that panel and they've all worked fine without overheating

[budm]

Re: Can anyone help me identify this transformer?

If you're looking at the picture, the terminal farthest to the right is ground and the other one is 120VAC

Since that MOV is connected between 120VAC terminal and the Ground terminal, and you are only using TWO wires and no GROUND wire that means one leg of the MOV is floating due no safety wire being used, so for it to get hot the current has to flow through 120VAC line, the MOV, the not connected GND, but since GND terminal is not used so it must be MAGIC!
Something in that box has to be able to convert 120VAC TO 230VAC between Neutral and GND that is strong enough to heat up the MOV.
I wonder what you will get if you put 120V 40W (OR LESS) lamp in place of the MOV.

[WHaThEFLuX]

Re: Can anyone help me identify this transformer?

Ok I rechecked everything, I might have gotten the hot and neutral wires mixed up, this time with everything correct I got ~100VAC at the top MOV AND ~228 at the MOV in question....something in there is amplifying that current, I just have no idea what.

For the lamp test, is there a chance the light will blow?

[budm]

Re: Can anyone help me identify this transformer?

Are we talking about the same MOV? I only see one Black MOV in that picture which is connected to those two terminals.

[WHaThEFLuX]

Re: Can anyone help me identify this transformer?

the black piece outlined in red in post 25 is what I'm referring to, are we talking about the same thing?

[budm]

Re: Can anyone help me identify this transformer?

Is this the one we are dealing with?

That one with red marking I cannot tell what that is, it does not look like MOV but cannot really tell by the picture.

[redwire]

Re: Can anyone help me identify this transformer?

There's a few ways this could be happening. First, I'm selling stock in a new company (Mr. Fusion) that can power the world...

I think it's the flame-sense HV backfeeding because this is running with no safety ground. This controller probably uses old crappy flame-sense high voltage generator that uses mains? like in this pic.

I could see a X-cap and relay/transformer or the ignitor getting resonant and making more than 120VAC. But this doesn't have enough current to heat up a MOV.

[WHaThEFLuX]

Re: Can anyone help me identify this transformer?

Redwire I agree, but that thing is definitely getting burning hot almost instantly, with that much current going through it it makes sense.

The component I'm referring to and have been testing is the black circular ceramic cap looking thing with the red marking in the picture.

Bud, if that's not the MOV, where is it and what does it look like?

[budm]

Re: Can anyone help me identify this transformer?

Redwire I agree, but that thing is definitely getting burning hot almost instantly, with that much current going through it it makes sense.

The component I'm referring to and have been testing is the black circular ceramic cap looking thing with the red marking in the picture.

Bud, if that's not the MOV, where is it and what does it look like?

Let us see good clear pictures of this thing that is getting hot. Now I do not think it is MOV. I cannot tell looking at that picture.
It looks like there are two black discs, but another picture shows just one black disc.
I wonder the one that gets hot is the NTC, not MOV. Need to really verify the printing on both devices from WORKING BOARD.

[budm]

Re: Can anyone help me identify this transformer?

It is hard to see how the two black discs are connected, too much flux and stuff on the board.

[WHaThEFLuX]

Re: Can anyone help me identify this transformer?

Ok lets get this straightened out......


This is a picture of the component, NOT the one that is overheating. there is no way to get a clear shot of it, but the two black discs are identical:
(In this pic, the black disc in the location I'm referring to has been removed)





This is a pic of where the component that IS overheating attaches to the board:

[WHaThEFLuX]

Re: Can anyone help me identify this transformer?

The overheating component is not actually connected to L2(N) at all, although the one in the picture is.


I had to take pictures from two other donor boards but they are exactly the same, my sincerest apologies, I'm making this so much more confusing than it actually is.....

[budm]

Re: Can anyone help me identify this transformer?

Picture is showing only ONE disc,
So RV1 is the one that is NOT getting hot.
RV2 is the one is getting hot and it is not installed on the board per the pictures right?
Your red marker is so big so I cannot tell how HOT RV2 is connected to what.
RV2 has the same exact printing on the body as RV1?
It looks like one leg of RV2 is connected to one pin of that black relay contact.

[WHaThEFLuX]

Re: Can anyone help me identify this transformer?

Picture is showing only ONE disc,
So RV1 is the one that is NOT getting hot.
RV2 is the one is getting hot and it is not installed on the board per the pictures right?
Your red marker is so big so I cannot tell how HOT RV2 is connected to what.
RV2 has the same exact printing on the body as RV1?

Yes, all that is correct, now we're on the same page!

[budm]

Re: Can anyone help me identify this transformer?

OK, so do you have RV2 from working board that we can see the printing on the body of RV2?
One leg of the RV2 goes to the same terminal that one of RV1's leg is connected to, another leg of RV2 goes to the relay contact.

[WHaThEFLuX]

Re: Can anyone help me identify this transformer?

Yes that's correct, I've tried every angle possible but I just can't get RV2 in focus, but I swear to you the markings on it are identical to RV1, they are ZNR V20241U

[WHaThEFLuX]

Re: Can anyone help me identify this transformer?

Bud, I know I've made this thread confusing, if there's anything else you need me to clarify just let me know!


Is the light bulb test worth doing? What will it determine?