Ask your questions here – (They will appear shortly)

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To add a question, go to the bottom of the page, fill in the comment and click Post Comment.  

Please look at the DIY Troubleshooting section before posting, answers to most questions can be found there. 

You can also reply to other people’s questions if you like. (Thanks for helping)

Please try to include the following with your question, list:
1) the date code (located under the battery),
2) the model number shown on the face of the controller (usually below and to the left of the dial, e.g., RD-600 or RD-600-R).
3) Color (mostly Gray or Blue) based on the example rainDials shown at the top of the page.

347 thoughts on “Ask your questions here – (They will appear shortly)

  1. My RD-600 is having multiple issues.

    #1. It was working, but I tried to test it. I attempted to power it off (from the plug) and then plug it back in.

    It wouldn’t power on. After awhile I was tinkering with it, and the LED display read 121 0
    Moving the dial around and changing things did nothing.

    #2 I tried to “reset it” by:
    1. Putting it into the B position
    2. Placing it on set program (the middle)
    3. Holding Manual
    4. Unplugging the ribbon (while it has power from the outlet)
    5. Waited 5 seconds and plugged the ribbon back in
    6. Released the manual button

    Now, I don’t get any power again.


    • I have the Rd-600 ext

      I just read your note about leaving the battery out and unplugged for 30 minutes. Trying that now.

      • Hi William,
        If that doesn’t help, I suspect you may have the RD-600-R model (look on the label near the semi-auto button). If you do, just drop me a quick message using the contact-us form and I’ll giv you all the details for repair.

        Even if you do get it working, keep a close eye on it – they often get intermittent and un-reliable, it may be better to send it in to avoid having to worry about it. I’m not very busy right now, so they get repaired the day they’re received, and in the return mail the next day.

        Let me know what your experiment yields,
        Thanks for posting,

  2. Anyway unit can water other than the times it is set for. Water company telling me my timer is water late at night. I have it set for 0500 to water. RD600 EXT

  3. Hello Brian,
    All valves are operational when I hit the start button manually, however, the indoor component of the rain sensor device (that synchs-up with the gauge/transmitter outside) constantly blinks green. I have tried re-setting but to no avail. Indoor device registers and stays red after a good rain and the control box will run the sprinklers manually as noted above when I hit bypass over-ride. It will sometimes stay red for a few days but that is OK, if it worked as desired. What do you suggest? Could it be the battery? Thanks.

    • Hi Rick,
      Being in Arizona, I don’t get much experience with rain sensors :-).
      Here are my thoughts:
      1) try new batteries, couldn’t hurt.
      2) try a full reset of everything, power everything down and back up. You can follow the reset instructions on this site in the DIY section.

      If none of that works and you have an RD-nnn-R

        model, I may know what the problem is. You’d need to send in a couple of the pieces.

        Anyway, give those a try first, if no luck, let me know and we can go further.

  4. RD 1200

    Model # 092303

    Selected zone will not come on, several try’s and then it will come on —Flashes on and off
    Unplug and then I try again ….

    • Hi Tim,
      Unfortunately, that’s a typical symptom of a failing controller. I’ll email you with repair details shortly.

      Brian – aka the RD600 rain dial doctor

  5. Hello. I have an old Hardie rain dial controller. It just says Hardie near the bottom right but does not have a model number on the left, it is blank (I think it may be an RD-600). I currently have two issues. First, the + – buttons on the top right stopped working. For a while I would have to push them 3-4 times to get them to work but now when I push them, nothing happens. The other issue is the numbers in the hour column on the clock/timer are starting to fade/disappear. For example, the number 8 only shows part of the number and a couple other number are just blank. Can these issues be fixed/repaired or am I better off buying a new controller? Thanks.

    • Hi Mike,

      Yes, those issues can usually be fixed. If not, I have some replacement options available. I’d suggest you send it in for repair and we’ll go from there. Just send it in – For details, see the page on how to get it repaired.

      Thanks for posting,
      Brian – the Rain Dial Doctor

      • Hi Brian,

        Thanks for the response. Will you just need me to send the controller or will you also need the connector board?



        • From the description of the problem, you don’t need to send the back terminal board. If you’re willing to take on the extra hassle, there’s no reason not to; I can inspect and test it. It’s up to you.

          Brian – the RD600, RD900, RD1200 rainDial doctor

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