DeLonghi Not Heating Water? 5 Fixes That Work

Why Your DeLonghi Coffee Isn't Hot

A DeLonghi espresso machine that makes lukewarm coffee usually isn't broken. The cups, portafilter or internal circuit are cold, the coffee temperature is set low, or scale is slowing the heater. De'Longhi's own troubleshooting tables list exactly these causes. Preheat everything, raise the temperature setting and descale. A genuine heating fault shows up as lights that flash and never settle.

Whatever the model, an espresso is a small drink. The Dedica's default single and double shots are 35ml and 70ml. A cold portafilter, cold spouts or a cold cup can take most of that heat before you drink it. That's why De'Longhi's manuals have a section called "Tips for a hotter coffee", and why most "not heating" complaints get fixed without tools.

The model steps below come from De'Longhi's instructions for the Dedica EC685, the Magnifica S ECAM22.110, the Magnifica Evo ECAM290 and the La Specialista (EC935X) range. Button layouts vary within each family, so check your manual's settings section if yours looks different.

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Try This First

• Watch the lights after switching on. Flashing coffee lights mean the machine is still heating. Coffee made before they go steady comes out cool.
• Check Energy Saving. On bean-to-cup models, De'Longhi says the first coffee can take a few seconds longer in Energy Saving mode, because the machine has to heat up again.
• Think about timing. If 2-3 minutes have passed since the last coffee, the Magnifica manuals say the internal circuits have cooled down.
• Look for an orange descale light, or the descale symbol on bean-to-cup models.
• Check the water tank is pushed fully down. On the Dedica, a tank that isn't seated doesn't open its valves, and the machine flashes its lights without making coffee.

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Fix 1: Heat the Internal Circuit Before Brewing (Works About 35% of the Time)

A DeLonghi's first coffee is often its coldest, because the water passes through spouts, pipes and a brew unit that have cooled down. When you switch on a bean-to-cup model, it runs an automatic rinse to warm those circuits. That warmth fades within minutes, so a rinse just before brewing makes a noticeable difference.

Signs it's this one: the first coffee of the session is cool and later ones are hotter, or coffee is cool if you wait a few minutes between drinks.

Magnifica S and Magnifica Evo:

1. Switch on and let the automatic heat-up rinse finish. The Evo is ready when its drink and intensity lights stay on steadily.
2. Just before brewing, run a rinse. Press and hold the rinse (hot water) button for a few seconds, as the Evo troubleshooting table describes. Hot water runs from the spouts and heats the internal circuits.
3. Brew straight away. De'Longhi's manuals say the circuits have cooled once 2-3 minutes have passed since the last coffee.

Dedica EC685:

1. Switch on and wait until the coffee button lights stop flashing and stay on.
2. Fit the filter holder with the filter, but no coffee.
3. Put your cup underneath, press the 1 cup button, and let hot water run through into the cup. De'Longhi recommends this in "Tips for a hotter coffee". It heats the filter holder and the cup together.
4. Empty the cup, add coffee to the filter and brew.

Time: 1 minute
Cost: Free
Success Rate: About 35%
Difficulty: Easy

Energy Saving: if you want the first coffee faster and hotter, check the Energy Saving setting. On the Magnifica S, the green ECO light shows it's on. Turning it off doesn't make coffee hotter, but it avoids the extra reheat before the first cup.

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Fix 2: Preheat the Cup (Works About 20% of the Time)

The Magnifica S and Magnifica Evo troubleshooting tables both list "the cups were not preheated" as the first cause of coffee that isn't hot. A thick ceramic espresso cup straight from the cupboard can pull a lot of heat out of a small shot. The cup can't be the cause of a machine that won't heat at all, but it's the most common reason for "warm, not hot".

Signs it's this one: coffee tastes hot for the first sip, then goes lukewarm quickly, especially in thick-walled cups.

1. Fill the cup with hot water from the machine's hot water function or steam wand, and let it sit while you prepare the coffee.
2. Tip the water out just before brewing.
3. Dedica: stand the cups on the cup warmer on top of the machine. De'Longhi says it gets hot during use.
4. Use a smaller or thinner cup for single shots. A 35ml espresso loses heat fastest in a large mug.

Time: 1 minute
Cost: Free
Success Rate: About 20%
Difficulty: Easy

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Fix 3: Raise the Coffee Temperature Setting (Works About 20% of the Time)

Most current DeLonghi espresso machines have an adjustable coffee temperature, usually with three levels. It's easy to leave it on a low level, or to reset it by accident. De'Longhi's manuals note that the setting controls the temperature of the water in the thermoblock, not the temperature of the drink in your cup. Raising it helps, but it won't make up for a cold cup.

Signs it's this one: coffee is consistently warm rather than hot, even with a preheated cup and rinsed circuits.

Dedica EC685:

1. With the machine on, press and hold the steam button for about 10 seconds, until the three buttons flash in sequence. That's the settings menu.
2. Press the 1 cup button to choose brewing temperature.
3. Choose the level. De'Longhi's settings table shows three levels: Low, Medium and High. The 1 cup, 2 cup and steam buttons select them in that order.
4. The light for the setting you changed flashes quickly to confirm. The menu closes by itself after 15 seconds.

Magnifica Evo (ECAM290):

1. Press and hold the settings-menu button shown in your manual for about 5 seconds, until the setting buttons light up.
2. Press the Coffee temperature button.
3. Press the bean symbol for LOW, MEDIUM or HIGH, then confirm.

Magnifica S (ECAM22.110):

1. Set the temperature with the machine off at the control panel, but with the main switch on the back still at "I".
2. Follow section 11.4 of the manual. Hold the indicated button until the panel lights come on, choose from LOW to HIGH, then confirm with the button to the right of the dial.

La Specialista (EC935X range):

1. Press the coffee temperature button (B4) before brewing, and pick MIN, MED or MAX.
2. De'Longhi lists the range as 92-96°C, and suggests MAX for light-to-medium roasts and MIN for dark roasts.

Time: 2 minutes
Cost: Free
Success Rate: About 20%
Difficulty: Easy

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Fix 4: Descale and Set the Right Water Hardness (Works About 20% of the Time)

Scale on the inside of the thermoblock and pipes slows the flow and gets in the way of heating. The Magnifica Evo troubleshooting table lists "the machine needs descaling" as a cause of coffee that isn't hot. When the water hardness is set too low, the descale alert comes late, so scale builds up for longer than it should.

Signs it's this one: the descale light is on or has been ignored, the machine brews more slowly than it used to, or you live in a hard-water area.

1. Use De'Longhi descaler only. The Dedica manual warns that unsuitable descalers, or descaling incorrectly, may cause faults the guarantee doesn't cover.
2. Remove the water softener filter if one is fitted.
3. Run your model's descale program. On the Dedica EC685, mix the descaler with water up to MAX, hold the steam button for 10 seconds, turn the steam dial to hot water, and press the button shown to start. It takes about 25 minutes, including a fresh-water rinse. The orange light goes out when descaling is complete.
4. If the cycle is interrupted by a power cut, run it again. De'Longhi recommends repeating an incomplete descale.
5. Test your water with the hardness strip supplied, and set the matching hardness level in the settings menu. On the Dedica, that's Low, Medium or High water hardness in the same menu as temperature.

Time: 25-45 minutes
Cost: About $15-20 for De'Longhi EcoDecalk
Success Rate: About 20%
Difficulty: Easy

Full step-by-step instructions for each model are in our DeLonghi descaling guide, with model-specific walkthroughs for the Dedica and Magnifica Evo.

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Fix 5: Recognize a Real Heating Fault (Works About 5% of the Time)

If coffee is still lukewarm after Fixes 1-4, or the machine never finishes heating, the heating system itself may have failed. It could be the thermoblock, a temperature sensor, a safety cutout or the control board. None of these parts can be serviced by the owner, and De'Longhi's instructions say not to open the machine.

Signs it's this one:

• The heat-up lights keep flashing and never go steady
• Dedica: "the appliance does not function and all the lights flash". De'Longhi's troubleshooting table says to disconnect the appliance immediately and contact authorized Customer Services
• The machine has stopped heating completely, and hot water from the wand is cold too
• It trips the breaker or smells of burning

What to do:

1. Switch off and unplug the machine. Let it cool for 30 minutes, then plug it in and switch on once. If a temporary overheat protection had tripped, the machine should now heat normally.
2. If the same symptoms come back, stop using it. Don't keep power-cycling a machine with a heating fault.
3. Write down the model number from the rating plate on the bottom of the machine, then contact De'Longhi through the support page for your model at delonghi.com.
4. Don't open the housing. The Magnifica Evo instructions say repairs must be done by authorized service personnel, and that attempting a repair voids the warranty.

Time: 30 minutes
Cost: Free to diagnose
Success Rate: About 5%
Difficulty: Easy

If your machine won't switch on at all, see DeLonghi won't turn on. For an error code on a bean-to-cup display, start with our DeLonghi error codes guide.

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Model Differences

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Prevent Lukewarm Coffee

• Rinse before the first coffee, and again if more than 2-3 minutes have passed since the last one
• Keep cups warm, on the Dedica's cup warmer or with hot water
• Set the water hardness correctly so the descale alert comes on time
• Descale when the light comes on, using De'Longhi descaler
• Use the water softener filter if your model takes one and you have hard water

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FAQ

Why do the lights flash after I steam milk on my Dedica?

After steaming, the heater is hotter than espresso needs. When the two coffee lights flash together, the Dedica needs a cooling cycle. Place a container under the wand and open the steam dial. Hot water and steam come out until the machine has cooled, then delivery stops and it's ready for coffee. That's why De'Longhi says to make all your coffees first and froth the milk last.

How hot should DeLonghi espresso be?

De'Longhi doesn't publish a cup temperature. Its temperature settings control the water in the thermoblock, and La Specialista models list 92-96°C for that. The coffee in your cup will always be cooler than that, especially a single shot in a cold, thick cup.

Can I use vinegar to descale my DeLonghi?

De'Longhi says to use De'Longhi descaler only. Its Dedica manual warns that unsuitable descalers, or descaling incorrectly, may cause faults the manufacturer's guarantee doesn't cover. That rules out vinegar if your machine is still under warranty.

My steam wand is hot but the espresso is lukewarm. Is the heater broken?

Probably not. Steam proves the heater works. Lukewarm espresso from a machine that steams normally points to heat being lost after brewing, or to a low temperature setting. Work through Fixes 1-3. On the Dedica, also check you aren't brewing right after steaming, when the machine is running its cooling cycle.

Does Energy Saving make the coffee colder?

De'Longhi says Energy Saving only adds a few seconds before the first coffee, while the machine heats up again. If you brew before it's ready, or skip the rinse, that first coffee can be cooler. Later drinks aren't affected.

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Related DeLonghi Guides

• DeLonghi descaling guide
• DeLonghi Dedica descaling guide
• DeLonghi error codes guide
• DeLonghi Magnifica Duo not heating
• DeLonghi won't turn on

Sources: De'Longhi instructions for use for the Dedica EC685/EC695/EC785, Magnifica S ECAM22.110, Magnifica Evo ECAM29X.6Y and La Specialista EC935X.