I'm new here as well. I have a Autopilot Dig 220 and find myself with a similar problem. I have had my SWG running for 3 years event free. All of a sudden at the end of last season, I started to get the Clean/Check Cell warning. I figured that my cell was done and got a brand new replacement (SC-60).
Nothing seems to be working, as I've checked the power in (220 V) - OK. I use Mineral Springs (Bioguard) and levels are OK. My cell voltage is 18V and 4.7 Amps. Cell power - 3.
I have not checked the fuses or cell cable for continuity, but will do that in the next hour.
Any assistance would be much appreciated....