Hotpoint Aquarius FDW60 Flashing Lights Problem?

Please help, have a Hotpoint Aquarius FDW60 Dishwasher, when you select the programme (have tried them all)the wash light comes on, machine starts to fill with water and commences to start washing, after about 60 seconds the fast and delicate lights come on Numbers 4 & 6, machine drains the water and nothing else happens. Was working fine before I topped up with salt and rinse aid. have laid it down, took the back off, checked th pipe for kinks and the drain hose for blockages, everything ok, have cleaned filter also. Any suggestions will be greatly appreciated. Merv