Hi Mor
Depending on how long the power was off due to the builders, it is likely that one or more of your products pin codes have become active.
Have you entered the pin codes for all your main products? If you have a link system, it's a good idea to remove the masterlink plugs before entering the pin codes.
I would enter the pin codes, then unplug from the power to plug the masterlink back in and then re-connect the power.
Opman