My printed circuit board began acting erratic.  First the diagnostic button, when pressed, would not cycle through the menu.  I knocked on the outer panel, and it began working again.  But, now, the Aqua Rite is staying on (all led's and the display) even when the pump has turned off!  Anyone else ever had this problem?  Do I need to replace the PCB?  It's strange that the system is not shutting down when the pump turns off.  It always shut down before.