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I have a Sears/Coleman central air conditioner p/n BRHS0481CB. The line contactor does not engage on it's own. If I manually engage it, the AC works great. I am not getting 24volts to the coil of the contactor. All the wires check good for continuity. I know the control board may be fualty, but is there anything else I can check before replacing the board?

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Have you removed the board. there maybe a burnt trace that you can jumper with a wire. I have done this is the past.
I went tot sears and found your model with part numbers. the link is below

alot of parts for this unit are discontinued by sears you maybe able to find online somewhere other than sears

hope this helps. I am sorry I can not be of more assistance but it seems you already have covered the basic troubleshooting that can be done on my side.

Posted on Jul 11, 2009


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