UPDATE:
I've been doing some tests trying to know where the problem is and it seems that finally it comes from WAN interface. I configured first WAN but until I configured the IPSEC tunnels the problem didnt appear.
Today I reinstall a fresh pfsense and first of all I configured the tunnels with no problems and when I configured the WAN the problem start. If I enable WAN with DHCP or Static IP without a gateway it works everything fine, when I choose a IPv4 Upstream gatewy then return the problem.
At this point this topic can be closed.