What does the message "turn to open then turn to close" mean on my JURA D6 coffee machine and how can I resolve it?

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The message "turn to open then turn to close" that appears on your JURA D6 coffee machine is a usage guide for the three-position switch located on the right side of the machine. This switch controls the hot water and milk foam system. This message typically appears during important maintenance operations, such as the initial filling of the system, descaling, changing the filter, or cleaning the milk system.

Here’s what you need to do:

Turn to open: Turn the switch counterclockwise to the position "m" (for milk/foam). A light segment will illuminate on the switch to confirm that you have reached the correct position. This is when the system initiates the operation (filter rinsing, descaling, milk cleaning, etc.).
Turn to close: Once the operation is complete or on hold, return the switch to the position "°" (off). Turn it clockwise until you feel a slight resistance.

Contexts in which this message appears: This message particularly appears during the first commissioning (filling the system and rinsing the initial filter), when changing the CLARIS Smart filter cartridge, when cleaning the milk system with JURA maintenance products, or during the descaling of the machine. In each case, the procedure remains the same: open the flow by turning to position "m", wait for the operation to finish, then close by returning to position "°".

If after correctly opening and closing the switch the message persists or if the machine does not perform the expected operation, this may indicate a malfunction of the sensor or the switch itself. In this situation, check that the switch moves freely and does not have any coffee or milk residues that could block it. You can clean around the switch with a damp cloth. If the problem continues after a thorough cleaning of the machine, contact the JURA customer service in your country (find the contact details at www.jura.com).

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