My aunt left for 2 weeks, and came back to find her grass was yellow and the sprinklers weren't working anymore. I can't figure out what's wrong. She has 4 watering zones hooked up to a timer. And the timer works fine, but the water just dribbles out of the sprinkler heads.
What could have broke to cause the sprinkler heads in all the zones to fail?
What could have broke to cause the sprinkler heads in all the zones to fail?