this is my first post. New member. I own a Rainbird ESP controller with 7 zones installed. 1-4 are operating fine. 5,6,7 are installed, but not operating now, and the controller is now displaying "no mod 1" when dial is in set in positions 5,6,7. I have double-checked that the module hs the lever in the "locked" position. What is the next logical trouble-shooting step to getting zones 5,6,7 operating again? MT