Why does the pump run dry even after cleaning the KARCHER SCP 12000 IP LEVEL SENSOR level sensors?

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If the KARCHER SCP 12000 IP Level Sensor pump continues to run dry despite cleaning the sensors, it means that the water level detection system is not stopping the pump correctly. This can have several causes.

Clogging of the IQ Level Sensor: Even after cleaning, limescale or mineral deposits may persist on the sensor electrodes. Clean the sensor again by removing it from the guide rail and gently rubbing it with a damp cloth and clear water, focusing on the metal contact areas. Perform this cleaning regularly (every 2 to 3 months) to avoid operational failures.

Incorrect sensor position: Check that the IQ Level Sensor is set at the correct height. In automatic mode, the sensor must be positioned above the desired minimum water level. If the sensor is too low or located out of the fluid, it will never detect that the water has dropped, and the pump will continue to operate.

Insufficient water level: Ensure that the fluid level is sufficient. The SCP 12000 pump requires a minimum of 3 cm of water to operate automatically. If the level is below 3 cm, the pump may run dry. If you notice it running dry (without water), stop the pump within 3 minutes to avoid motor wear.

Faulty electrical connections: Examine the cables and connectors linking the sensor to the pump. Corrosion, poor contact, or a damaged cable will prevent the stop signal from being transmitted. Also, inspect the power plug and electrical supply to ensure they are stable.

Mechanical problem with the pump: If after these checks the pump continues to run dry despite a clean and correctly positioned sensor, the pump itself may have an internal defect. In this case, contact KARCHER customer service as professional repair will be necessary.

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