You can insert "contact tool" and look if the contact status is ok. If there aren't initial contact, ansys will ignore the contact (you can try changing pinball region)
I have a torsional spring with no initial contact betwen the coils(gap=0,7mm). When I solve the problem with frictionless contact the model converged, but when I apply friction no.
I am using Friction coeficient 0,1, augmanted lagrange formulation, asymetric contact and add offset ramping...