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My power went out so when it came back on we had to go flip the switches on the fuse box but now my ac wont work, we even changed out the outlet to see if that was the problem but it still wont work

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  • imalilaud Jun 30, 2009

    Nothing works not even the fan , i thought mabe it would have a reset button but i dont see one. i dont know. i might have to have someone come look at it.



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  • 37 Answers

I assume since you changed the outlet it is a window unit?

Does the fan work?

If so you either have a thermostat that won't engage the power to the compressor or you have a bad capacitor that starts the compressor. Most units have a start and a run capacitor, but they are often in the same can. Sometimes you can ground out the cap- with the unit UNPLUGGED!- by using a screwdriver and shorting each cap pin to ground-. Prepare yourself for a loud POP when you do this. Sometimes this works to get the cap working again- but just sometimes.

Since it quit working after the power went out maybe you had a surge that fried a component. Also, when you changed the outlet did you check that you were actually getting voltage? Depending on your unit it could be a number of things from the cord to a switch. Make sure you have the thermostat set for coldest and see if that does it. Sometimes it is just something simple like that and it happens to the best of us from time to time.

Posted on Jun 30, 2009

  • Annimater
    Annimater Jul 09, 2009

    Did you test the outlet for AC voltage_ either 120 or 240V? Either before or after you changed the plug?

    If you aren't getting juice to the plug or wires, then you probably have a circuit breaker that has broken the circuit and the ones you turned back on are not the bad ones. Check for a sub-panel, your circuit may not be in the box you flipped the switches on. Lots of times they look 'on' but have kicked off. Go over each breaker one by one flip them off and back on, check for voltage at your plug.

    It may be that the breaker for that circuit is bad. Hopefully you or someone has diagrammed your panel to show what circuits are on each breaker. I'd recommend it.

    If you have proper voltages then likely you have a problem with a switch, which may be analog or digital depending on the vintage of your unit.

    Check the cord for continuity and/or power. Test analog switches out of circuit for continuity or

    carefully check for ACvolts with a voltmeter to see if your switch is working. I wouldn't recommend this unless you are familiar and comfortable with testing hot high voltage circuits and reading your VOM scales. Never use more than one hand and put the other behind your back- don't touch the unit with your other hand use alligator clips to make the connections. Use rubber gloves and don't stand in a puddle.

    I hope the surge didn't fry the compressor in a brown-out situation. Surges are bad, but low power is even worse on electronics, expecially newer more sensitive digital equipment.



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