My submersible pump stopped working suddenly. It's a 1.5hp pump 3 wire with a Franklin Electric control box and Irritrol pump start relay. I've measured across all 3 pump leads while out of circuit and they test fine (low resistance). On the control box, I have 230V in(red and black are both hot) and the start line is also hot. However, on the pump out, only the black leg is hot. Red has nothing. At the relay, the control line is hot but there is no voltage at either input or output. So, I replaced run and start capacitors (put a meter on it and they didn't appear to charge). I still have nothing at the red.
What's next in my troubleshooting?