The most common reason your sprinklers are not watering is because the rain sensor is active. Do you have a rain sensor on your sprinkler system? If so, slide your sensor bypass switch into the « BYPASS » position (on an SRC, turn the dial into the RUN (Bypass Sensor position).
Correspondingly, How do you repair a hunter valve? 
Why wont my sprinklers turn on? When the sprinkler zones do not turn on at all, it is generally a problem with the electrical signals running from the controller to the valve solenoids. More rarely, it is caused by a faulty valve that needs to be rebuilt or replaced.
Furthermore, Why would my sprinkler system stop working?
If your sprinkler system is not getting water, a number of things could be the culprit: The backflow may be off. If the handle on your backflow valve gets inadvertently shut off, it restricts any water from flowing past the backflow and to the sprinkler system valves. Your rain sensor might be faulty.
How do you troubleshoot a hunter pro c controller?
How do you change a hunter solenoid valve? 
How do you install a hunter solenoid valve? 
How do you clean a hunter solenoid valve? 
How do you manually turn on a Hunter sprinkler system?
How long do sprinkler solenoids last? Generally speaking, the life expectancy of a sprinkler system is about 20 years, on average. As for its components taken separately, good quality heads will last you anywhere between 10 to 15 years, while inexpensive ones will only be good for 2 or 3 years.
Why would sprinklers not turn off?
If your irrigation system does not turn off, you need to isolate the problem. This starts by checking the main water line and the controller. If those are working, then you need to locate the valves and check to see whether they are dirty, the diaphragm is torn, or the solenoid is broken.
Why won’t my sprinklers turn on manually? If your sprinkler system won’t turn on or if you have low water pressure, this could be caused by the valves not being turned on all the way. Just locate the valves and make sure they are both turned on (you should have 2 valves, one located on the horizontal pipes and one for the vertical ones).
How do you fix a sprinkler valve that won’t turn on?
How do I know if my sprinkler controller is bad?
Sprinkler System Troubleshooting — 5 Signs Of A Faulty System
- Controller Isn’t Working Properly.
- Low or High Water Pressure.
- Sprinkler is Stuck or Won’t Come Up.
- Puddles on Lawn or Around Sprinkler.
- Uneven Spray Patterns.
- When to Call a Professional.
How do I reset my Hunter Pro C controller? 
What causes a sprinkler valve to stay on? One of the most common reasons for a valve to keep running continuously is the accumulation of debris in the diaphragm, which prevents the valve from closing. This video will teach you how to clean the diaphragm on your valve. The most common reason for a valve to remain on, or weep, is debris.
How do I fix a leaky solenoid valve?
How do you wire a solenoid valve? 
How do you wire a solenoid coil?
How do you open a solenoid valve manually? 