Ask your questions here – (They will appear shortly)

To avoid spam and other problems, your comment won’t appear until it’s been approved.  Don’t worry if you don’t see it right away.

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.

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

  1. 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

  2. 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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