  The cosmic expansion is computed for various dynamical vacuum models
$\Lambda(H)$ and confronted to the Cosmic Microwave Background (CMB) power
spectrum from Planck. We also combined CMB in a joint analysis with other
probes in order to place constraints on the cosmological parameters of the
dynamical vacuum models. We find that all $\Lambda(H)$ models are very
efficient and in very good agreement with the data. Considering that the
interaction term of the dark sector is given in terms of matter and radiation
densities, we find that the corresponding $\Lambda(H)$ model shows a small but
non-zero deviation from $\Lambda$ cosmology, nevertheless the confidence level
is close to $\sim 2.5\sigma$.
