  We analyze the general phenomenology of neutrinoless double beta decay in the
minimal left-right symmetric model. We study under which conditions a New
Physics dominated neutrinoless double beta decay signal can be expected in the
future experiments. We show that the correlation among the different
contributions to the process, which arises from the neutrino mass generation
mechanism, can play a crucial role. We have found that, if no fine tuned
cancellation is involved in the light active neutrino contribution, a New
Physics signal can be expected mainly from the $W_R-W_R$ channel. An
interesting exception is the $W_L-W_R$ channel which can give a dominant
contribution to the process if the right-handed neutrino spectrum is
hierarchical with $M_1\lesssim$ MeV and $M_2,M_3\gtrsim$ GeV. We also discuss
if a New Physics signal in neutrinoless double beta decay experiments is
compatible with the existence of a successful Dark Matter candidate in the
left-right symmetric models. It turns out that, although it is not a generic
feature of the theory, it is still possible to accommodate such a signal with a
KeV sterile neutrino as Dark matter.
