Rain Dial RD‑1200 Drains 9 V Battery Monthly – Panel Fault

Zones 6‑12 pulse/flash OFF. New battery works for a month then dies.

Common failure: panel circuitry drains battery. Panel unplugs from outdoor box (ribbon cable). Repair or replace panel.

Irrigation: Rain Dial 600 Starts Sprinklers in SET Mode: Panel Repairable; Rain Dial 600 Shows "16F" - Won't Reset or Run Manual; Resetting a Rain Dial Hardie Controller (Model P/NHHA11272); Rain Dial RD-1200 Replacement: Flashing Time & OF1 Error; Rain Dial RD-900: Zones 1 & 2 Low Voltage — Check for Short; Irritrol Rain Dial RD-600 Battery Drain and Unstable Station Voltage; Rain Dial Programmed But Won't Water: Check for Short or Bad Processor; Rain Dial Won't Program: Power Cycle Without Battery, Then Replace Panel; Irritrol Rain Dial RD-1200 Runs Unwanted Program B; Rain Dial Transformer Test After Power Outage

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