Over the last few months, I've been getting a "Purifier Off Acid Off OpEC error." My suspicion was that there was a short in the communication cable because once I fiddled with the cable, the error would go away. I finally broke down and bought a new cable. Once I plugged it in, the error went away. Then a couple of days later, I went to check it and I had the error again. After checking things, I noticed the circuit board in the chemistry controller didn't have a light on anywhere. Then I noticed a faint fast blinking red light. I figure that can't be good. So does that mean the board needs to be replaced?