@langfitt1 - With no zones working it could be either a) the controller, b) the common wire or c) water.
Is there a master valve or pump start relay in the system? If so, is it working? Use the bleed screw on the master valve to open it for the next test.
When the bleed screw on a zone valve is opened, does that zone run?
And my favorite, is there a rain sensor wired in-line on the common wire?