I've got a 600GPD unit that has worked perfectly. This past weekend I started it as normal. I got three low pressure alarms with shut off. I watched the sight gauges and it looked like it was trying to make pressure as normal. After that, now, it just trips the breaker immediately if I start or hit booster pump. All new 25 and 5 microns as well as charcoal. Flow is checked from the raw water intake through the Groco to the pump. I removed the output line on the pump and it still trips the breaker immediately. Seems like a pump or motor that is locked up. Any other thoughts on what might be wrong? Thanks.