I called Jandy, and they said SC 194 is a 'new' code, and suggests the cell has gone bad. I had a Jandy Service Rep check the cell, and yes, it was bad. He put in a new cell, and my pool is up and running beautifully. I asked the Rep about switching the direction of the cell, and he said it didn't make a difference. I don't know for certain, but will keep it in the same direction - I don't want to tempt fate
Interesting note, the replacement part recommended by Jandy did not include a flow meter (since I already had one wired in.) This was a 'less expensive' option - if you call $500 'less expensive'!