My Nano Koralia Pump is Running in Reverse.

This can be due to the Nose Cone being damaged. Please check if the front of the cone is damaged and if the 2 pieces of plastic inside the cone are not broken. There should be 2 pieces of plastic sticking inwards on the cone, if one of them is missing, the pump can run in reverse, If the nose cone is broken? Fix simply by replacing the Nose Cone Part Code as follows :
900  Koralia  XP1940.
1600 Koralia XP2901.