I noticed when I first turned on my Aqua Plus panel this year a "Communication Error" displayed on my keypad. I am able to turn on my filter. The display will blink thru my default display setting. When i navigate to the settings menu the display will go blank and the lights on the keypad blink. The weird thing is sometimes the panel will work and produce chlorine. Tried resetting power as Hayward website suggests but this problem comes back eventually. Inspected and cleaned cell. Any Ideas?