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My air conditioner won't turn on. I have flipped the breaker, I have changed the thermostat batteries, have checked the filter and it is clean, have tested the furnace but still can't find the problem

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  • pepsi_chic18 Jul 06, 2010

    I tried turning the fan from auto to on and it did not run. Out of curiosity I turned the heat on and got it to kick in and the fan works with the heat. I don't know what a jumper is and might have to break down and call a professional.

  • pepsi_chic18 Jul 06, 2010

    The fan kicked in! All on it's own. I wonder if the record breaking heat has anything to do with it. Praying the A/C unit does the same...

  • pepsi_chic18 Jul 06, 2010

    I'm not sure what the insulated suction line is... but I don't hear anything running.

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Turn your fan from auto to on, your fan should run. If it does not turn on you have a 24volt problem.
Go down to furnace and remove thermostat wires at control board. Install a jumper between R and G. Put door back on and turn furnace on. If fan comes on you have a wiring or control issue, If fan does not come on iot is possible that a little 3amp fuse located on the board is blown or your tansformer is bad.
Remove jumper bewteen R and G and put it between R and Y. Put door backon and turn on power. If your AC starts, you have a wiring problem.
If it does not start, did you check to make sure the breaker or fuse is not blown on the air conditioner?

Posted on Jul 06, 2010

  • Frank Bryant Wetzel Jul 06, 2010

    It could be that your thermostat is not wired to have fan on operation. Turn it to cool and the fan should come on as well. It

    does not matter what the outdoor unit is doing.



    If the fan comes on in cool mode then at least you know you dont have a control issue and the problem is outside

  • Frank Bryant Wetzel Jul 06, 2010

    Go outside as you should be able to hear the compreesor run. Also the insulated suction line should be cold.

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How to get Goodman air conditioner to pump cold air in after changed filter?


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Is the compressor running? That is the big box unit outside of the house. You may have to turn it off at its breaker (separate from the air handler where the filter is located and usually outside the house near where the meter is located.) Leave the breaker in the off position for 20-30 minutes before turning it on again. Set your thermostat to 66 degrees or there abouts before turning the breaker back on. After turning the breaker back on, if the compressor does not start up within a few minutes, then it is possible that one of the startup capacitors is defective. If you do not feel comfortable working around 230 volt electrical systems, call an AC repair shop and have them do a system check.

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Turn off the breaker on the outside unit (this could be a fuse block that you have to pull out) and make sure you have your inside thermostat in the off position.

Once you are 'absolutely sure' that you have all electricity off - you can wash the coil with a high pressure hose. Just make sure that both - the inside and outside of the coil is clean; you may have to disassemble the unit a little bit, i.e. take the top off or one of the sides, etc.

The only hope you have - is that the coil is clogged and causing the compressor to overheat and go off on amp overload. It's possible this is the case - but I also suspect the compressor is electrically breaking down which is not connected to the condenser coil being dirty, in which case you will need a service tech and may be faced with some expensive repair. Let's hope this is not the case.

So - it's worth a shot to wash the outside coil.

Not to be 100% negative - it's possible it's something minor and when a service tech looks at it - it could be a fairly cheap repair bill.

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