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What does the double flashing of the BOLD light mean?

The double flashing of the BOLD light means the drip side of the unit require to be descale. To descale it please follow the steps:

1) Remove the antichlorine filter and pour 100 mL of descaler into the tank;
2) Fill the tank with water up to the “max” level for the correct dilution;
3) Place the carafe on the warming plate;
4) Press and hold the “BOLD” touch icon for at least 6 seconds to start the descaling” cycle.
5) The “descaling” cycle will take about 30 minutes. During the descaling cycle the “BOLD“ led will blink.
6) Rinse at least 3 times by operating the machine with water only