Make sure the fuse on the main board didn’t blow, check your power supply to make sure it is working correctly and outputting the correct voltage. Then check the connection at each wire running to the valves. Are they seated fully and tight?
It sounds as if you have an electrical issue so running through everything one more time, checking connections and proper placement is going to be your best bet. If you didn’t touch the unit while is was not being used, fuses and power supply are more than likely the issue.
If you just recently updated to the most recent firmware it may have corrupted, so you may look at retrying the update.