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Irrigation/irritrol rd-900 won't keep programming



The RD-900 I bought keeps resetting to factory default programming.  I program....don't touch the controller...few days later....back to factory default (progra A set 10 minutes for each station, etc.).  No flashing, no fuse indicator.  Tested battery multiple times.  Programming stays using battery when I unplug the power.  I have a remote.  I exchanged the product for a brand new one (except for remote)....programmed everything...3 days later....back to default.

Any ideas?

Thank you

The Rd900 is a old school design. I know the newer ones the battery will hold the program for a longer period of time since they are solid state. My first thought is a power supply issue. Question, when your run times default to 10 mins do you also lose the correct time?


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Robert Diersing


I am able to answer any questions related to lawn irrigation systems and backflow devices. But pumps are not my speciality since they are not common in my area. Most of my product experience is in Hunter, Rainbird and Irritrol components.


I have been in the Irrigation Industry since 1998 with experience in everything from residential to athletic fields, commercial, industrial to complete Hospital campuses

Irrigation Association

I have been quoted in trade magazine articles.

Kent State University 12 CEU's per a year in Industry related classes

Awards and Honors
Irrigation Association Certifications: Certified Irrigation Contractor State of Florida Licensed Irrigation Contractor State of Florida Certified Backflow Tester State of Ohio Certified Backflow Tester EPA WaterSense Partner

Past/Present Clients
Hospitals, School Districts, National Franchises, Government Agencies

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