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					Originally Posted by  Circa89
					 
				 
				Installed this new fancy unit. I guess I did it wrong because I connected both hotwires and the white.  
 I should have installed 1 and 1 and capped the other hotwire. 
			
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This is not a 3 way switch type circuit.
Kitchen counter plugs have 2 circuits going to them, one to the top and one to the bottom. The little connector between the screws on the hot side should be snapped out and both sets of hot/neutral wires should be connected to each side, if you only have one neutral that is okay. If you didn't snap out that connector and then hooked up both hots then that's probably your issue.
By the way, if you were only flipping one breaker off it's surprising you didn't shock yourself or short out a wire accidently.