  Nonlinear conductivity of point contacts (PCs) on the base of FeSe single
crystals has been investigated. Measured dV/dI dependencies demonstrate the
prevailing contribution to the PC conductivity caused by the degraded surface.
Superconducting (SC) feature in dV/dI like a sharp zero-bias minimum develops
for relatively low ohmic PCs, where the deep areas of FeSe are involved.
Analysis of dV/dI has shown that the origin of the zero-bias minimum is
connected with the Maxwell part of the PC resistance, what masks energy
dependent spectral peculiarities. Even so, we have found the specific features
in dV/dI - the sharp side maxima, which may have connection to the SC gap,
since their position follows the BCS temperature dependence. Exploring the
dV/dI spectra of the rare occurrence with Andreev-like structure, the two gaps
with Delta = 2.5 and 3.5 meV were identified.
