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De'Longhi EC155 Troubleshooting

One of De'Longhi's espresso and cappuccino maker.

No espresso is coming out of the machine.

Check to see if there is ample water in the reservoir. See guide on replacing the reservoir.

Descale the machine as described in page 10 of the user's manual.

When running, the pump is making irregular, unexpected, loud noises.

Pull out the reservoir and re-position it. See guide on replacing the reservoir.

No indication of power to the machine.

Make sure the power cord is plugged into a working outlet.

Flip the "on/off" switch to the "on" position.

The froth is coming out quicker and thinner than expected.

Press a little harder, but not too much.

Add more ground coffee .

Remove any large chunks or grind the chunks to match the size of the rest of the ground coffee.

The froth is coming out slower and thicker than expected.

Press a little softer, but not too much.

Remove any excess amount of coffee.

Refer to the Cleaning the Boiler Outlet guide on page 10 of the user's manual.

Refer to the Cleaning the Filter guide on pages 9 and 10 of the user's manual.

Remove fine coffee and replace with coarser coffee.

Let coffee air-dry.

The coffee is not the ideal temperature of 140 degrees Fahrenheit.

Refer to the Preheating the Espresso Coffee Unit guide on page 8 of the user's manual. Also, wait for the indicator light to turn on.

Make sure skim milk is used at refrigerator temperature.

Thoroughly clean the holes in the cappuccino frother as depicted in figure 21.

댓글 15개

Mine unit has a hissing / boiling sound then after I make the espresso and remove the handle, there seems to be air pressure being released. What could this be?

malexandre - 답글

Great guide!

Mine had not been descaled or cleaned in 6 months... Bad boy. After cleaning it with 50% vinegar and cleaning both the coffee filter and the boiler filter (with a needle - tedious) the water barely dripped out. The pump pushed a healthy stream of water out the milk frother so I knew that was good. I removed the boiler filter again and it was still clean. I then tried pushing a 25% vinegar solution through the boiler discharge tube without a filter in place. (Better this way too as the filters don't need to be flushed afterwards. ) Initially just drips but suddenly as pressure built a plug of material gushed out. After this, nearly a whole reservoir of my descaling solution flowed well but was cloudy. I then flushed it and the milk frother with another two full reservoirs of clean water and it slowly came through clear (flushing the vinegar taste from the system). Our little espresso machine is working like a champ again. And a lot quieter.

Andrew Cole - 답글

I think that's exactly what I need to do - thank you! Any warning about dripping without filter?

gvanoni -

Mine is brand new and nothing is coming out. It doesn't seem like it's even sucking up any water? I know the reservoir is inserted correctly, so I'm not sure what the problem is.

Jasmine Howard - 답글

Mine is doing the same! Did you find a way to fix it?

Marby -

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