Cut the Power to Your A/C or Waste Energy and Damage Your Compressor
Flip off the breaker if the A/C compressor has a dedicated circuit, or rotate the disconnect block upside down into the 'off' position. The disconnect block is located in the small panel outside near the compressor. Reenergize the unit 24 hours before startup. That will give the oil time to reach operating temperature. Plus: Check out these common air conditioning mistakes you might be making.