Combi coffee maker BCO431.SCommon issuesThe coffee has an acid taste
Combi coffee maker BCO431.S

The coffee has an acid taste

Try this solution

After descaling, make sure to thoroughly rinse the espresso unit

Possible cause:
Inadequate rinsing after descaling.

Do you need descaler? Delonghi's EcoDecalk has been specifically designed with your machine in mind. Using this descaler regularly will prolong the lifespan of your machine and keep it running at optimal performance.

De'Longhi Coffee Machine Descaler EcoDecalk 500ml Best Value Pack (delonghi.com)

Rinse as specified in this step-by-step guide:

How-to guide

1. Please note:

Failure to clean as described in this guide invalidates the guarantee.

2. Remove the water softener filter (if present)

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3. Fill the tank with descaler solution

Obtain descaler solution by dilating the descaler with water, following the instructions on the pack.
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4. Press the ON/OFF button to switch on the coffee maker.

The ON light comes on.

5. Make sure that the filter holder is not in place and position a container under the cappuccino maker

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6. Press the express coffee/hot water button and deliver about 1/4 of the solution in the tank

At intervals, turn the steam dial to deliver water from the cappuccino maker. Then, interrupt the water delivery by pressing the express coffee/hot water button button and leave the solution to work for about 5 minutes.

Repeat this another 3 times until the tank is empty.

7. Rinse the tank well and fill it with clean water (without descaler)

Put back in the coffee machine.

8. Press the express coffee/hot water button

Deliver water until the tank is empty.

9. Rinse the tank well and fill it with clean water (without descaler) again

Put back into the coffee machine.

10. Press the express coffee/hot water button

Deliver water until the tank is empty.