We've also had electrical problems with our shutters on phase1. I can highly recommend the electrician we use, Mick Banks, who can be reached on 0034 626 971 670.
He's sorted our shutters out in both of our apartments. Needed a new switch this last time as the ones fitted by Roda on phase 1 have now been changed from phase 2 onwards as they clearly have some issues.
Hope this helps