Co-injection (Do to D+) applied to TEXTOR leads to a hot ion mode regime with enhanced confinement. A synergistic increase of the beam effects is observed with the addition of ICRH at omega =2 omega cD= omega cH (H minority heating scenario) resulting, beside other reviewed effects, in a significant increase of the ion temperature and of the beam driven current (respectively larger than 30% and 50% for the addition of an RF power comparable to the NBI one). The large ion heating efficiency of ICRH also remains when ICRH is added to balanced injection and the hot ion mode regime remains up to the maximum achieved beta (=2/3 of the Troyson limit with more than 6 MW of auxiliary heating). ICRH also leads to the formation of more 'isotropic' tail. These results re interpreted with the help of Fokker-Planck code which computes the beam distribution function in the presence of RF and of TRANSP simulations. The amount of RF absorption by the H minority, by the ion beam and the bulk plasma is theoretically evaluated.