Hardie TC-9B Controller Repeats Program A Continuously

A Hardie TC-9B controller runs Program A through all eight stations, then immediately starts Program A again instead of waiting for the next scheduled start day (even days).

Cause: Multiple Start Times Programmed

A common mistake is setting a separate start time for each zone. The controller only needs one start time per program. It will automatically run each zone in sequence. If multiple start times are entered, the controller "stacks" them: when the first program finishes, it immediately begins the next start time.

Fix

1. Go into Program A and ensure only one start time is set.
2. Check Programs B, C, and D – clear any start times or run times that may be inadvertently set.
3. Verify the "Even Days" schedule is correctly set for Program A.

After correcting the start times, the system should run once per scheduled day.