Sorry to jump in so late, but the information provided in the Original post indicates a warn out cell. Normally the display will show either CHECK/CLEAN CELL or LOW AMPS/CELL?
However, the high volts and lower amps is indicative of a depleted cell, low salt (and the displayed salt needs to be calibrated), or operation during cold water conditions with low salt levels. I would recommended having your water tested to verify the salinity first.
If you remove the cell, inspect for any scale formation on the blades. While you have it out, do the outer blades appear to be worn down along the leading edge of the blades? This is a sign of cell depletion.