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Is the board powered directly from the disconnect or is it powered from stack-ons on the transformer?

Oh sorry I had to reread your first post. Didn't realize the board was new

I agree with Carmon. I think you have a faulty board.

I had a Carrier last week that was doing this same thing. The reversing valve was sticking and not shifting all the way over. After a good whack, it shifted. Customer wanted to see if it would...

I saw this same thing just the other day on a house. The first one I'd ever seen. I was driving down the road and it caught my attention out of the corner of my eye. I thought how dumb is that.

Customer calls today and says "my em. heat is running constantly. When can you get here? My light bill is gonna be outrageous." (this is a restaurant) I told to give me 30 min. I get there and he...

Y'all were right. I put a new limit switch in and it ran for about 7 min and faulted out on the roll-out switch so I started digging. Turns out the hx was toast. Thanks.

Ok thanks. Still learning my way around but I just realized what you are talking about.

Welcome. I'm in the same boat as you, as I just joined a couple days ago. I think this forun will help us greatly.

I started in the trade in '09. Not long ago at all. I just kinda fell into. I was at a crossroads in life and didn't really know what I wanted to do. I had planned to go to school and become a...

I hope I'm not posting this in the wrong place. If so tell me. I am interested in getting my NATE Cert. and just wondered if some of you more experienced guys could give me some advice on it. I'm...

I can see where you are coming from as I have been "lurking" for a couple of weeks before I actually signed up, and I seen quite a bit of that. I the type that has to know WHY. lol I can't just...

Makes sense. Thanks guys. And I am gonna apply for the pro membership. I've almost got enough posts.

I ran into to a bad hx the other day though and like to never figured out the problem. It was the first hx I'd ran into that was bad.

I can't say it's not, but I don't think it is. The guy called a few days ago, but when I got over there the H/O had pulled out what he called the "relay". In reality he had pulled out the fusible...

Does anyone have any experience with the GPS-2400 or even the GPS-1200 plasma devices? I haven't installed any yet but I'm looking to. From what I've seen and read they look pretty simple to...

Does anyone know a good site where I might find the limit switch specs for a Rheem Model RRKA-A030JK08E? I have a faulty switch and want to make sure the one I replace it with has the same temp....

Hey all. I just joined the forum and wanted to introduce myself. I am sorta new to the trade I guess you could say. I've been in it for a little more than 2 years so as I'm sure most of you know,...

Yep sounds like a direct short as already stated. I had the same problem a few months back. I put a Lil' Popper in and blew probably 12 fuses before I found it. It was an older house with terrible...

Is it blowing on the primary or secondary side?

Wow!! I'm new here, but what an "interesting" thread.

LOL