OK, so I have a couple of Power Pole blades on my boat. It has the pumps that has three buttons on top, up, down, and red in the center. I noticed that one pumps led does not blink unless you push one of the buttons. The other blinks constantly. While working around the boat I keep hearing a tone every few minutes. I am sure it's coming from one of the pumps but I can't pin it down. It's about a 4 note tune. Anyone else had this issue and does your leds constantly blink or do they stop after a while?