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heyref

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1

Saturday, April 10th 2010, 12:29pm

IRRITROL RD 900 SEMI-AUTO AND MANUAL MODE PROBLEM

I have a many-year old Irritrol RD-900. I have 9 zones. If I set the automatic timer correctly everything seems to work just fine. However if I try to use the Semi-Auto Start A-B-C the unit apparetnly shorts out and the read-out screen flashes and I have to re-program the entire unit. In fact if I try to make any changes such as run a zone or run a program the screen flashes. If I set a program and let it cycle everything seems to work. If I make any changes at all the screen flashes and I have to re-program

mrfixit

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Posts: 1,450

Location: USA

2

Saturday, April 10th 2010, 1:50pm

I ran across this exact same problem with the Rain Dial about a month ago. The controller was about 12 years old. I installed a new controller. I'm happy. The home owner's happy. You'll be happy. Here's what I replaced it with.

www.sprinklerwarehouse.com/Hunter-Pro-C-Conventional-Controllers-Timers-s/7015.htm

This post has been edited 1 times, last edit by "mrfixit" (Apr 10th 2010, 1:56pm)


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