On rare occasions something occurs that causes the processor to lock up. Sometimes the programming acts strange, or the clock even quits working. This would most likely happen when during power outages or transients. The good news is that it rarely … Continue reading
If the Irritrol RD600/900/1200 irrigation timer display is blank, do the following simple 9V battery test first, then follow the links based on the results. Note that if you recently replaced the 9V and think it’s good, it’s probably dead … Continue reading
It’s important to note that if the battery is good the display and timer will appear to function, but the valves will not activate because the 24VAC power is not getting to the controller. Simple battery/power check: Remove the battery, … Continue reading
What do you do when the timer comes on when it’s not supposed to. First thing to do is notice the display on the Irritrol RD600 series Irrigation timer; the top row of the display will have a small number … Continue reading
This is the primary troubleshooting page for the Irritrol RainDial RD-600, RD 900, RD1200 Irrigation timer when valves don’t come on. If the water is not coming on when it should, the problem typically resides these areas: Faulty timer Water … Continue reading
For over 10 years we’ve been helping people solve their sprinkler timer issues. Scroll down to see the many DIY troubleshooting topics below Go through DIY list below. Contact us about repair/replacement options or Post questions if you have … Continue reading
What to do if a RD600 valve is stuck on, won’t turn off, or comes on when it shouldn’t? (This and all information on the RainDialDoctor website is copy-righted by Brian Keller.) Note that this information applies to the Irritrol RD-600, RD-900, … Continue reading
Question: You just repaired my rain dial RD600 two weeks ago, reinstalled today, flashed 0F9, did a reset now flashing 0F1 alternating with the time. Any ideas? Thanks, David Answer: Hi David, That indicates that the controller is turned off … Continue reading
I see this on rare occasions but have not been able to repeat the problem enough to diagnose it. Something causes the processor to lock up. The good news is that it rarely occurs and is easily fixed by doing … Continue reading
(All information here is copyrighted by Brian Keller, 2012). If this troubleshooting information doesn’t help solve the issue and you’d like to have it repaired, please send it to us. We repair all models of RainDial timers. The Irritrol RD-600 … Continue reading
Everything you need to know about Troubleshooting, Programming, Repair and Buying Irritrol Rain Dial RD-600 series irrigation controllers. We repair and sell Irritrol Rain Dial sprinkler timers/controllers: Irritrol Rain Dial Series RD-600, RD-900, RD-1200, and we’re the first and only site … Continue reading
TESTING THE IRRITROL RAIN DIAL RD600, RD900, and RD1200 Series SPRINKLER TIMER TRANSFORMER Note first that Rain Dial Transformer failures are fairly uncommon, but do happen. If your display shows nothing at all, the transformer could have failed — you … Continue reading