Rainbird Isa 406 Instructions (2024)

FAQs

Why does my Rain Bird sprinkler system run twice? ›

A common reason why a program is repeating is that you have a second start time set. The start times control the exact time your ESP-Me timer will begin to water and they also control how many times a day your timer will water. The ESP-Me allows you to set up to 6 start times per program.

Is the water turned on, is the controller plugged in and programmed correctly, are there isolation valves that might be turned off? Verify valve operation by using the manual bleed. This might indicate a controller or wiring problem if the valve works properly when using the manual bleed.

Program A, your lawn, needs to be watered once or twice a week in the spring so you would set Program A to run twice a week. Program B, your trees and shrubs, need to be watered only once a week in the spring so on Saturdays, for example, when you know that you have a better chance of checking the system for issues.

More often than not, there will be a valve that is stuck in the “open” position on the pressurized system. When the valve remains open, water continues to run down the line, which causes your sprinkler to continuously run even when the timer is in the “off” position.

A common reason for a controller to repeat a cycle is too many programmed start times. Only one start time per active program is required, a second start time will cycle the program an additional time. NOTE: In the Start Times dial position, the numbers 1-4 do not represent stations.

The Reason why a Controller Repeats a Cycle Over and Over

The answer is usually there are too many programmed start times — program start times are being confused with zone (station) run times. Some controllers have up to eight start times per day to a single program (e.g. A).

Watering frequency options include watering on Odd days, Even Days, Custom days, or Cyclic Days. An example of Custom Days is above, where you choose the specific days each week that will water. An example of Cyclic Days is below. This is where you water every “blank” number of days, and you choose how often that is.