  Radiative seesaw models have the attractive property of providing dark matter
candidates in addition to generation of neutrino masses. Here we present a
study of neutrino signals from the annihilation of dark matter particles which
have been gravitationally captured in the Sun, in the framework of the
scotogenic model. We compute expected event rates in the IceCube detector in
its 86-string configuration. As fermionic dark matter does not accumulate in
the Sun, we study the case of scalar dark matter, with a scan over the
parameter space. Due to a naturally small mass splitting between the two
neutral scalar components, inelastic scattering processes with nucleons can
occur. We find that for small mass splittings, the model yields very high event
rates. If a detailed analysis at IceCube can exclude these parameter points,
our findings can be translated into a lower limit on one of the scalar
couplings in the model. For larger mass splittings only the elastic case needs
to be considered. We find that in this scenario the XENON1T limits exclude all
points with sufficiently large event rates.
