Aquabot S2-40 not working

by Dave
(NY)

Have had the S2-40 for two years. Use once a week during the summer months. Store inside during the winter.

Went to put in my pool. The base unit appears to be working - lights coming on etc. Put the unit in the pool. Connected to the base unit. Power lights come on. Unit does not move. Pulled to the surface but did not remove from the water. Fans are not moving/working.

Please advise how to fix/repair.

Thank you