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1) Do you have a 2 wire lead AC voltage tester ( a contact type) or a multi-meter to confirm voltages at the double pole circuit breaker and at the exterior disco box?
2) The 1st step in troubleshooting the problem is to confirm if the exterior disco switch box has 240 volts. If 240 volts is present at the disco switch, then the problem is not electrical related but is an A/C unit issue.
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Thanks for confirming.
Then the problem is internal to the A/C unit.
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hi i am dan i can help you with this. first can you describe the problem with the A/C a little better. do you get air blowing out of the vents inside? when did this happen? what is the model number of your A/C unit