The controller is set to Program A (water Mon/Wed/Fri at 2 AM), but Program B (daily at 4 AM) also runs. The user thinks selecting Program A should disable B and C.
When the controller is set to "RUN", all three programs (A, B, C) execute independently. The A/B/C switch only selects which program you're editing, not which runs. To stop Program B, remove its start time (set to OFF). You don't need to "turn off" the whole program—just delete its start times.
The "SEN" indicator appears only on newer models (last few years). Check the manufacturing date in the battery compartment; contact Irritrol to confirm if your unit supports it.
Typically 2 years. Contact an irrigation supply store (e.g., Ewing, Horizon) for warranty service if the contractor won't help.
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