Irritrol RD‑900: Programs B and C Won’t Run Automatically

Program A runs every 3 days. Programs B and C (daily, multiple start times) only run manually.

Ensure bottom switch is on “Run” and dial at current time.
Verify days are turned “On” for B and C, or use skip‑day = 1.
If still failing, microprocessor may be faulty; check date code for possible free replacement.

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