I went through the process of turning on my in ground sprinkler system for the spring. After turning all appropriate valves on, I was ready to test my system. My system is designed to only run one station at a time. By the way, I have six stations. Once I got to station three, station two was suppose to shut off but, it did not. Then, I decided to turn the system power off to stop the water for station 2 but, it did not work. In order to get station 2 to turn off, I had to shut the main water line off in the house. Can you please tell what may be wrong with my sprinkler system? By the way, I have a Hunter Pro-C.