A little update here. I've been doing a little research and this is what I've found about this piece of equipment;

F3- Inverter Fault actually means drive right module desat/overcurrent
F6- R Motor Offline actually means drive right motor current offset

Also found out that this F/L has 3 inverters - one for each drive motor and one for the pump motor. So, I believe that the right inverter may be defective (F3) and causing the F6 code.

Just gotta find out where the inverters are located and I should be good to go.