Having same issue with Rainbird system. Controller seems to work with display working showing correct time and day. Replaced a broken PVD Bonnet and Poppet, turned on system and everything was back to normal. About a week or two after, system will not turn on. I've tried everything and can't figure out why system sudenly stopped working. No broken pipes or leaks noted throughout property. PVD seems to working fine as well. Could there be an issue with the PVD bonnet and poppet that prevents water from reaching the system?