How to Descale a De'Longhi 22.110 Espresso Machine

If your office’s De’Longhi 22.110 fully automatic espresso machine is making weaker espresso or taking longer to brew, limescale buildup might be the culprit. Hard water minerals accumulate inside the machine over time, especially in areas with poor water quality like Beijing, affecting both performance and flavor. Here’s how to tackle it properly.

Descaling is needed when the red indicator light on the control panel starts flashing—typically after 200 to 1200 brewed cups, depending on your machine’s settings. Ignoring it can degrade the internal pipes and ruin your espresso’s taste.

When Does the De'Longhi 22.110 Need Descaling?

The De'Longhi 22.110 features a built-in descaling alert system. On the front of the machine, below the large knob used to adjust coffee dose, there is a small status light. When this light turns red and begins to flash, it signals that descaling is required. This alert is triggered based on the number of coffees brewed—not a set timeframe—and the threshold can be configured anywhere between 200 and 1200 cups. Even if the machine continues to operate, ignoring the alert allows mineral deposits to build up in the internal plumbing.

What Happens If You Don’t Descale?

Over time, hard water minerals—especially in places like Beijing with poor water quality—accumulate in the machine’s water lines. This limescale buildup restricts water flow, reduces heating efficiency, and can eventually cause machine malfunctions. More immediately, it negatively affects the flavor and texture of your espresso, making it taste harsher and less balanced. Since over 90% of espresso is water, cleanliness matters.

How to Descale Your De'Longhi 22.110 Step-by-Step

1. Prepare the Descaling Solution

Start by taking the official De'Longhi descaling solution, cutting open the seal, and pouring it into the water tank. Only fill the tank to about one-third of its capacity—this helps speed up the descaling cycle. Once filled, reinsert the water tank securely into the machine.

2. Position the Steam Wand and Prepare a Cup

Move the steam wand all the way to the left. Place a cup directly beneath it to catch the water that will be released during descaling. Avoid using the machine’s wastewater tray, as the flow can be forceful and messy. A dedicated cup makes cleanup easier.

3. Start the Descaling Process

Press and hold the red descaling indicator light (the same one that was flashing) for several seconds to begin the descaling cycle. Merely pressing it briefly will start the regular self-cleaning cycle, which won’t remove limescale. You must hold the button to engage the full descaling mode.

4. Monitor the Steam Indicator and Open the Steam Valve

Once descaling is activated, the yellow steam indicator light on the top right of the control panel will begin to blink. When you see this, turn the steam knob counterclockwise. This opens the steam valve and causes water to flow from the steam wand into your cup.

5. Wait for the Cycle to Progress

After some water is released from the steam wand, the machine will pause. At this point, the descaling light stops blinking and remains steadily lit. You’ll need to wait patiently until the machine signals again—this wait depends on how much water you initially poured into the tank. When the water level gets low enough, the ‘Add Water’ indicator light will illuminate.

6. Refill and Resume

When the Add Water light comes on, pull out the water tank, discard any leftover solution, and rinse the tank thoroughly to remove any descaling chemical residue. Refill the tank with fresh water to about one-third full, then reinsert it. The steam wand will once again release water, emptying most of the tank until the Add Water light comes on again.

7. Complete the Process

When the Add Water light illuminates for the final time, turn the steam knob clockwise to close it. Then, refill the water tank to full capacity, reinsert it, and let the machine finish its cycle. Once completed, the descaling process is finished. Your De'Longhi 22.110 is now clean and ready to brew better-tasting espresso.

Why Descale Your Espresso Machine?

Regular descaling extends the life of your espresso machine and protects its internal water pathways. Without it, mineral deposits gradually clog valves, pumps, and heating elements, leading to costly repairs or complete failure. More importantly, descaling ensures that your espresso tastes clean and balanced—since water makes up over 90% of the drink, its purity directly impacts flavor.

Frequently Asked Questions

How often should I descale my De'Longhi 22.110?

The machine is programmed to prompt descaling after 200 to 1200 brewed cups, depending on user settings. In areas with hard water, you may need to descale more frequently, even if the light hasn't turned on yet.

What kind of descaling solution should I use?

Always use the official De'Longhi descaling solution specified for the 22.110 model. Avoid generic or vinegar-based solutions, which may damage the machine or leave residues that affect coffee flavor.

Can I use vinegar instead of descaling solution?

The article does not recommend using vinegar. It advises using the official De'Longhi descaling solution to ensure safe and effective cleaning without risking damage or off-flavors.

What happens if I ignore the descaling light?

Ignoring the light allows limescale to build up in the internal components, which can reduce performance, alter espresso taste, and eventually cause machine failure. It’s best to descale as soon as the indicator prompts you.

Do I need to rinse the machine after descaling?

Yes. After the descaling cycle, you must rinse the water tank and run fresh water through the machine to remove any remaining descaling chemicals before brewing coffee again.

Why does the steam wand release water during descaling?

The steam wand is used as an outlet for the descaling solution during the process. Opening the steam valve allows the solution—and later clean water—to flush through the internal system to dissolve and remove mineral deposits.

Recommended FrontStreet Coffee Blends for Espresso

For your De’Longhi 22.110, FrontStreet Coffee’s Classic Blend offers rich crema and a smooth body—perfect for office espresso. Its traditional (Mandheling-Brazil) profile suits milk drinks like lattes and cappuccinos. For a fruitier option, try Strawberry Candy Espresso, blending multiple regions for a sweet, candy-like profile. Both are freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.