Nespresso Lattissima Pro Not Working? 5 Fixes (EN750)

How the Lattissima Pro Tells You What's Wrong

The Lattissima Pro (EN750) has a text display, so it doesn't use colour codes or blinking-light patterns. When something's wrong, it shows a message, or the display stays dark. Its troubleshooting table covers:

• No light on the display: check the power and press the ON button behind the display.
• "Machine too hot": wait, it cools down by itself.
• "Machine needs repair": contact Nespresso.
• Coffee slow or not hot, capsule area leaking, lever won't close, poor milk froth: each has an owner fix, below.

Its descaling, water hardness, emptying and factory reset all run from the Menu, guided on the display.

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Quick Checks (2 Minutes)

• ✅ Display dark? Press the ON button, which sits behind the display.
• ✅ Read the display. It names the problem in words.
• ✅ Milk drink? Is the milk container connected, with the steam connector door open?
• ✅ Capsule container full? It holds 13-16 capsules.

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Fix 1: Display Dark: Power and the ON Button

What the manual says: "Check the mains, plug, voltage, and fuse. Press the ON button located behind the machine display. In case of problems, call the Nespresso Club."

The Lattissima Pro also switches off automatically. In Menu → Auto power off, choose 9 minutes, 30 minutes, 2 hours or 8 hours.

Time: 1 minute
Cost: Free
Difficulty: Easy

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Fix 2: "Machine Too Hot"

What the manual says: in certain conditions the heater gets very hot, for example after emptying the fluid system. "Simply wait, machine will cool down automatically."

The volume pages add another cause. If you've programmed coffee over 150 ml, let the machine cool for 5 minutes before the next coffee, "to prevent the risk of overheating".

Time: A few minutes
Cost: Free
Difficulty: Easy

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Fix 3: Milk Froth Poor or the Milk Won't Come

What the manual says:

• Use skimmed or semi-skimmed milk at fridge temperature (about 4 °C / 39 °F). Don't use raw milk.
• Rinse after every milk drink: put a container under the milk spout and turn the froth knob to «CLEAN». Hot water and steam run for about 15 seconds and stop.
• Every two days, take the Rapid Cappuccino System apart and wash the parts in the upper rack of the dishwasher. Or hand-wash them every day: soak at about 40 °C with detergent for at least 30 minutes.

How to connect it properly:

1. Slide the steam connector door to the right.
2. Connect the milk container, and wait about 15 seconds while it heats.
3. Set the froth knob for the froth you want, then press Cappuccino or Latte Macchiato.

To take it apart: lid off, unplug the aspiration tube, turn the knob to its release mark and pull it up, unlock the connector and pull it off, then pull off the milk spout.

Milk can stay in the container for up to 2 days in the fridge. Clean everything if it's been out of the fridge for more than 2 hours.

Time: 5 minutes
Cost: Free
Difficulty: Easy

More: Nespresso milk frother not working.

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Fix 4: Lever Won't Close or the Capsule Area Leaks

What the manual says:

• Lever won't close completely: empty the capsule container, and make sure no capsule is blocked inside.
• Capsule area leaking (water in the capsule container): position the capsule correctly. If it keeps leaking, call the Nespresso Club.

Time: 2 minutes
Cost: Free
Difficulty: Easy

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Fix 5: Descale From the Menu

What the manual says: coffee slow or not hot = "Descale if necessary". Select Menu → Descaling when the alert appears, and the display guides you through it.

1. Eject the capsule. Empty the drip tray and capsule container.
2. Fill the tank with 100 ml Nespresso descaling agent + 500 ml water.
3. Insert the hot water spout. Put a container of at least 1 L under both the coffee outlet and the spout.
4. Confirm. The solution flows alternately through the coffee outlet, the hot water spout and the drip tray.
5. Empty the tray and container, rinse, and fill the tank to MAX. Confirm to rinse until the tank is empty.
6. The machine switches off. Rinse and wipe the hot water spout.

Set Menu → Water hardness with the test sticker, so the alert comes at the right time.

Time: Not printed in the manual; the display guides each stage
Cost: Nespresso descaling agent
Difficulty: Easy

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Resetting a Lattissima Pro

There's no button combination. Resets live in the Menu:

• Factory settings: "reset all parameters of the machine to factory settings".
• Program volume: you can also reset just the drink volumes.

Factory volumes: Ristretto 25 ml, Espresso 40, Lungo 110, Hot water 125, Warm milk 120, Cappuccino 50 milk + 40 coffee, Latte Macchiato 150 + 40.

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When to Contact Nespresso

• "Machine needs repair" on the display
• Irregular blinking
• Only water comes out despite a capsule
• The capsule area keeps leaking

The US/Canada edition lists a two-year De'Longhi warranty. Contact Nespresso for instructions on where to send it for repair.

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FAQ

Where is the power button on a Lattissima Pro?

Behind the display. The manual's fix for a dark display: "Press the ON button located behind the machine display."

How do I reset my Lattissima Pro?

From the Menu: choose Factory settings. Volumes alone can be reset under Program volume.

Why does my Lattissima Pro say "Machine too hot"?

The heater is very hot, for example after emptying the fluid system. Wait, and it cools down by itself.

How often should I clean the Lattissima Pro milk system?

Rinse it with the CLEAN position after every milk drink, and take it apart for the dishwasher every two days.

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Related Nespresso Guides

• Nespresso Lattissima Leaking?
• Nespresso Lattissima Touch Not Working?
• Nespresso Lattissima One Not Working?
• Nespresso Machine Not Working?

Sources: Nespresso Lattissima Pro instructions for use, US/Canada edition, from De'Longhi's EN750MB support page.