I'm struggling to get a Levitron PR180 3 way switch to power a fluorescent fixture. I seem to get better performance in the ON position vs. AUTO which is the motion sensor setting.

Please help.

If it works correctly with regular bulb, then unit probably OK. I seen others mention problem using flourescents, a relay would solve problem by providing direct connection, instead of electronic switching, Triac? But your unit is probably functioning correctly.

Is the switch grounded? The sensor needs a ground to operate properly.