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Transformer burned out - Heating & Cooling

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  • meccie Nov 16, 2008

    I replaced the thermostat on my Carrier AC and evidently shorted out something probably the TRANSFORMER and now I have nothing going to the thermostat. If I have a transformer I cannnot locate it. I need to know where the transformer is and how it is wired.


  • meccie May 11, 2010

    I thought the same thing but I cannot find the fuse. By the way I did have a short at the thermostat.



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I found my problem it was a fuse. The hadest thing was finding where the fuse was located. I kept looking and taking apart until lo and behold it was in the unit inside behind the big plate. I replaced the fuse 5amp and every thing is ***** dodey. I hope some one gets some use from this article.

Posted on Nov 16, 2008


I took care of the problem. I think my unit is older than 10 yrs. and it did not have a fuse protection, but I installed a fuse and now it's protected. The problem was at the thermostat, for some strange reason the thermostat burned out. Well, it was not a strange reason, the friend who helped me cleaned the unit ...He shorted out the thermostat. So I went and got a new one and also a new transformer. The unit is up and running like new!

I thank everyone for their input...

Posted on Oct 15, 2008

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Usually if a tranformer burns out you have a short in the 24v side of the system. What type of system do you have? Most units built within the last 10 yrs should have some type of fuse protection.

Posted on Oct 14, 2008

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