Display shows E14 and the unit reports a resin tank communication or sensor error (on twin/advanced models).

Safety first: Unplug the softener before working with any wiring or sensors.

• 1. Verify configuration: In the programming menu, confirm that the SoftPro controller is set for the correct system type (single tank vs. twin alternating). Incorrect settings can trigger E14.
• 2. Inspect sensor cables: On twin-tank SoftPro systems, locate the sensor or communication cables running to each tank head. Ensure all connectors are fully seated and cables are not pinched or cut.
• 3. Swap sensors (if possible): If each tank has a similar sensor, swap them between tanks. If the error follows the sensor, replace that sensor.
• 4. Check for corrosion: Inspect connectors for moisture or corrosion. Clean gently and dry thoroughly before reconnecting.
• 5. Replace sensor or harness: If wiring is intact and configuration is correct, replace the faulty SoftPro tank sensor or communication harness as specified for your model.