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Irrigation/Controller Issues


Hi Jim,
I have a Richdel Hybrid Controller (Model 446PR). Zone One runs while Zone 2 is running constantly and simultaneously. I have tried with all zones switched off. But Zone 2 still runs even when in "off position". Any suggestions would be greatly appreciated.

Hey Sheldon, it sounds more like a valve issue than a controller issue. First un-plug the power from the controller. If the valve stops running when you disconnect the power, then the controller is bad, and needs to be replaced. If you disconnect the power from the controller, and the valve keeps running, then the valve is stuck on, and needs to be replaced or rebuilt.
Go to, and this website will show you how to either re-build or replace a valve. Good luck and have a good day mate!!  


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Jim Schaefer


Any question regarding sprinking systems,installation,repair, and trouble shooting.


I have been installing and repairing sprinkling systems since I was 15 years old. Have owned my own sprinkler system contracting business for over 26 years. It is basically the only job I've ever done, except for being a paper boy when I was young.

High School diploma and 3 years college credits.

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