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I have a fedders A24C1X air handler and i am replacing the transformer. i was instructed to buy a universal one which i did. i belive i figured out the wiring. my new ones common is white and the orange wire is for 240. the old transformer has a yellow wire hooked to the 240 and the the black wire i believe to be the common. my main issue is the wires coming out of the old one are blue and red and the wires on my new one are red and green. does it matter how they get hooked up? how do i find out which is which. i have a diagram on the air handler that tells me what the run to but not sure what the new ones are attached to.

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  • Samuel Charles Spriggs Mar 26, 2011

    You are in the United States -- correct ?

    The tranformer's output is 24 volts AC -- is this correct ?

    Charlie

  • rubber_sled Mar 26, 2011

    yes that is correct

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  • Master
  • 1,489 Answers

First check the voltage on the red and green wires on the new transformer -- it should read 24 volts AC. If this is the case, the red and green wires would go to the contactor / relay 24-volt coil terminals -- wouldn't matter which one is connected to which side of the relay coil.

Charlie

Posted on Mar 26, 2011

Testimonial: "thank you so much"

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