A - There are valves in the ground, usually in a green box in the ground. There is usually debris inside the valve.
A - You might have a leak on the main water line for the system. This line is always pressurized unless the irrigation water is turned off in the house.
A - It is recommended to run it in the morning before daylight hours. This is your best opportunity to have the least amount of wind and evaporation.
A - The rain sensor must collect enough rain in order to shut it down. Also, the battery in the rain sensor may be dead.
A - That usually means the spring inside the head is too weak to pull the head back down.
A - You want to have it winterized before the temperature drops below freezing at night.
A - It majorly depends on the size of the yard. A good range for a typical city lot is
$2,000 to $3,500.