Display shows ERR SENSOR on advanced US Water Systems softeners with additional probes (e.g., leak sensor, temperature sensor)

Safety: Unplug the unit before handling sensor wiring. Dry any wet areas before reconnecting.

• Identify the sensor: Refer to your model's manual to determine which sensor is reporting ERR SENSOR (leak pad, temperature probe, etc.).
• Inspect and dry: If it's a leak sensor, check for actual water leaks around the softener. Dry the sensor and surrounding area thoroughly. Fix any plumbing leaks before resetting.
• Check connections: Ensure the sensor cable is firmly plugged into the correct port on the control board and is not damaged.
• Verify configuration: In the installer menu, confirm that the correct sensor type is enabled and configured.
• Replace sensor: If the error persists and wiring is intact, replace the faulty sensor with a US Water Systems compatible part.