A homeowner reports that after a flood, their Nelson SmartZone controller displays a persistent rain‑sensor suspend symbol, even after installing a new sensor and pressing the reset button. The system runs manually but not on programmed schedules.
The controller’s main board has likely failed. The rain‑sensor input circuitry or the microprocessor may be damaged, preventing the suspend condition from clearing.
Replace the controller. A modern, reliable alternative is the Hunter Pro‑C paired with a wireless Solar Sync sensor, which is an EPA WaterSense‑certified product. This combination offers robust scheduling and weather‑based adjustments.
If you prefer to stay with the same brand, check for a replacement board, but given the controller’s age (12 years), a full upgrade is more cost‑effective.
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