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Rain Dial Controller Turns All Valves On After Power Interruption

After a power outage or unplugging, the James Hardie Rain Dial (P/N 781001) activates all zones and runs for hours until manually stopped. Previous schedules are lost.

Explanation

The controller likely lost its programming due to a dead backup battery or microprocessor glitch. The “Rain Dial” is now made by Irritrol.

Solution

Download the Rain Dial manual from irritrol.com and reprogram the controller correctly.
Ensure a fresh 9 V backup battery is installed to retain schedules during power loss.

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