Rain Dial RD-600 Only Runs First Zone: Program A vs. B/C Confusion

Why Only Zone 1 Runs on Your Rain Dial RD-600

You set Zones 1–6 to start at 6 AM, but only Zone 1 waters. The other zones are likely assigned to Program B or C instead of Program A.

Top-left slider on the RD-600 selects Program A, B, or C. Each program has its own start times, run times, and water days.

Program A

one start time

Label the switch position with a marker: "A = MAIN LAWN", "B = DRIP", "C = SEASONAL" to avoid future mix-ups.

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