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RD900-EXT
I am having problems with the Rain Bird Controller. The power going to the solenoids seems to be pulsating and causing the solenoids to go on and off rapidly.
if you mean Rain Dial, try a reboot, but be prepared to replace it.
I've seen this a few times with the Rain Dial. The faceplate is bad. You could buy an indoor 9 station and swap out the faceplate or replace the whole controller with an outdoor.