I have a lc500/lc700 series controller and the selectron plus keypad. I'm getting a pb or p6 error code. It shows up every 5 seconds or so. Spa does nothing. I noticed that the array of leds on the back of the selectron all flash on every 5 seconds or so. My power is fine. I can jumper components to make them work but they won't work automatically. can you offer any advice? Thanks, Mark-Orlando