Understanding the RD600 Irritrol Skip Days feature

When I set the skip day number to 1 – does that mean it skips every other day?



Hi Bill,

The Irritrol RainDial RD600 Skip days feature is often misunderstood and difficult to understand, so thanks for the question.  The short answer to your question is no.  setting it to ‘1’ will water every day.   This should help explain why:

I like to think of the skip days feature like a daily incrementing counter that starts at 1 and goes to the number you specify and then repeats. E.g., for a skip days setting of 3, it goes like this: 1,2,3,1,2,3,1,2,3. When the counter matches the number, the watering schedule will run.

Instead of ‘skip days’, think of it as ‘water every # days.’
So if it’s 2, it waters every 2nd day, which is every other day: 1,2,1,2. If you set it to ‘1’, it waters every 1 day, which is ‘every day.’

Although I’ve answered your question, one may ask:  How do I know what today is in the sequence of days?    You determine that by putting the dial on ‘Today.’  It will show you the current number in the sequence.  You can also change the number of ‘today’ by pressing the +- buttons when in programming mode.

E.g., if you have skip days set for 3 and you want it to water tomorrow, set ‘today’ to ‘2’.

I hope this helped.
Brian – aka the RD600 Rain Dial Doctor for Irritrol timers

10 thoughts on “Understanding the RD600 Irritrol Skip Days feature

  1. I set my skip days to 12 on program B, however the valves open at 7 days on program B. Rebooted, all power off – battery removed, but it still does the same thing. This controller was new about 4 years ago. What is wrong?

    • Hi Ron,

      it’s likely that program A or C is setup and causing valves to come on. Are you thinking that because the switch is on Schedule B that it only runs schedule B? Take a look at my programming tips page, it’ll help explain it.

      Let me know if that helps or not,
      brian – aka the RD600 series Irritrol Rain Dial “doctor”

    • Hi Robert,

      Yes, you can have three different skip days settings, one for each program (A,B,C). The RD600 series timers will let you use skip days on one program and days of the week on another, or all skip days on all three.

      Thanks for posting the question,
      Brian – aka the irritrol RainDial RD600 series “RainDialDoctor”

    • Hi Scott,

      When using skip days, the individual days should show you ” — ” and not have on/off as a choice. Hopefully you’re seeing that 🙂

      Brian – aka the Irritrol RainDial RD600 series “doctor”

Leave a Reply

Your email address will not be published. Required fields are marked *