I reinstalled an essentially new Jandy VSPHP270 pump today after winter and having problems. Variable speed pump starts revving for about 5 seconds then just stops. About 5 minutes later the same thing . and keeps on repeating every 5 minutes or so. I tried electric, o-ring , bypassing filter and whatever else i could thing of with no success. It never gets up to full speed and just cuts out. I am thinking it may be some sort of internal protection but I don't know how to get around. This pump was only used a week or two at the end of last season and worked flawlessly. Any thoughts or suggestions highly appreciated. Thank you in advance.