For the last day or so my Intellichlor IC-40 has had the red "Low Salt" light on steady and the green "Cell" light has been off, regardless of where I set the output from 20% to 100%. I tested the salt level with both the AquaCheck test strips (3570 ppm) and the Taylor K-1766 drop test (4000 ppm) and found the salt level to be well within the acceptable range. I tried powering off the IC-40 by shutting off the breaker at the panel, waited a minute and then powered it back on - same result. I pulled the whole unit out to check the blades for buildup and they were absolutely clean. The unit is only about 8 mo. old, installed on 9/27/10. I usually run the output at 10%, occasionally 20% for maybe a day. Is there anything else I can do to troubleshoot the unit?
Btw, is the disparity between the test strips and the drop test (430 ppm) typical? Should I trust the drop test more?