Wilo · Control EC-Fire Pump
This error means the pressure or volume flow sensor is not working correctly. It could be defective or have lost its electrical connection.
Click steps to track your progress.
Check if the sensor is securely connected.
If the sensor appears loose, reconnect it firmly.
If the sensor is suspected to be defective, it may need to be replaced.
If the electrical connection is the issue, repair it according to the installation guide.