  Fluctuations during a prolonged maximum have been observed in several nova
eruptions, although it is not clear, and can not be deduced directly from
observations, if the phenomenon is an actual physical reaction to some
mechanism originating in the erupting white dwarf, if it is occurring in the
expanding ejected shell or if it is a form of interaction with the red dwarf
companion. A handful of erupting nova models are investigated in this work, in
order to assess the possibility of this sort of feature being an actual part of
the eruption itself. The results explain that the mechanism that may produce
these fluctuations is the repeated approach and recession of the convective
front from the surface. The efficiency of this mechanism, being dependent on
the mass of the WD envelope and the time scale of the nova cycle, favors low
mass WDs and long accretion phases.
