Hardie RD900 Clock Flips AM/PM Daily – Microprocessor Failing

Clock switches between AM/PM daily, causing unwanted watering. No 24-hour mode available.

Cause

Microprocessor failing; timekeeping corrupted.

Replace panel (Irritrol Rain Dial 9-station). Hardie bought by Irritrol; panels interchangeable.

Irrigation: Hardie HR6200 Shows “A1” but Station 1 Won’t Run; James Hardie 12-Cycle System: Heads Pop Up Briefly Then Retract; Locating Buried Irrigation Lines Before Fence/Tree Installation; James Hardie Rain Dial 1994 No Display—Power and Ribbon Checks; Hardie TC-6B Running Program Twice: Eliminate Extra Start Times; Hardie System Zone 1 Stays On – Need Model and Shutoff Method; Hardie 446PRI Zone Ran Overnight, Display Blank – Replace Controller; Rewiring a Hardie RD-900 Without a Diagram; Hardie TC-9B Controller Repeats Program A Continuously; Outdoor Hardie Controller Display Flashes Rapidly: Moisture Damage Fix

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