Delonghi Lattissima One

Flush the machine before first use
The manual recommends rinsing the machine by running three Lungo cycles into a 500 ml container before making your first coffee. This primes the hydraulic system and removes any manufacturing residues.
Rinse the milk jug after every milk drink
The Rapid Cappuccino System should be dismantled and cleaned after preparing milk recipes. Regular cleaning prevents blocked milk nozzles and poor frothing performance.
Only use fresh cold drinking water
Always fill the 1-litre water tank with fresh drinking water. If the machine has not been used for several days, replace the water before brewing coffee.
Use genuine Nespresso capsules
The machine is specifically designed for Nespresso Original capsules. Damaged, deformed or previously used capsules can cause leaks or brewing faults.
Descale as soon as the descaling light appears
The manual advises carrying out the complete descaling programme using the recommended Nespresso descaling solution to maintain brewing temperature and coffee flow.
Empty the machine before long storage
If the machine will not be used for an extended period or is being transported, perform the system emptying procedure to protect internal components from frost and stagnant water.

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Why isn't my Lattissima One producing good milk foam?
The manual recommends dismantling and cleaning the Rapid Cappuccino System after every milk preparation. Blocked milk passages are the most common cause of poor frothing.
Why are my coffee buttons flashing when I switch the machine on?
Flashing buttons indicate the machine is heating up. Once the buttons become solid white, the machine is ready to brew. The warm-up time is approximately 18 seconds.
Can I use any coffee capsule?
No. The Lattissima One is designed exclusively for Nespresso Original capsules. Using incompatible or damaged capsules may prevent correct extraction or cause water leakage.

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Coffee buttons flashing
Machine heating up (approximately 18 seconds). Wait until the buttons remain solid white before brewing.
Coffee buttons solid white
Machine is ready to prepare coffee.
DESCALING light illuminated
The machine requires descaling. Complete the descaling procedure using the recommended Nespresso descaling solution.
CLEAN light illuminated
The Rapid Cappuccino System requires cleaning. Dismantle and wash all milk system components before making another milk drink.
DESCALING and CLEAN indicators
These lights are used to guide the descaling and maintenance procedures described in the manual rather than indicating numeric error codes.
Machine won't switch on
- Check the mains supply.
- Ensure the plug is fully inserted.
- Try another socket.
- If there are still no lights, professional servicing may be required.
Coffee won't dispense
- Check the water tank is full.
- Confirm a capsule has been inserted correctly.
- Raise and lower the lever.
- Descale the machine if coffee flow has gradually reduced.
Coffee flows very slowly
The manual identifies scale build-up as a common cause. Run the complete descaling programme using the recommended descaler.
Milk isn't frothing
- Clean every part of the Rapid Cappuccino System.
- Check the milk nozzle isn't blocked.
- Use cold milk from the refrigerator.
- Ensure all milk jug components are correctly assembled.

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