20 Most Recent DeLonghi EC155 Espresso Machine Questions & Answers


Coffee stops flowing

Run a 50/ 50 vinegar & distilled water solution through it. Only use distilled or bottled, purified drinking water from now on.
10/9/2019 9:20:21 PM • DeLonghi EC155... • Answered on Oct 09, 2019

I have very little pressure when making an

I had that problem once when I ground my coffee too fine? Perhaps your grounds are too fine or your packing too much in. Try a bit courser grind and maybe not so much and not stamp it too hard? Hope that works!
8/21/2019 1:48:26 PM • DeLonghi EC155... • Answered on Aug 21, 2019

Steam knob won't turn on brand new DeLonghi EC155

Try turning it COUNTER-CLOCKWISE. This is was got it "unstuck" for me.
1/10/2019 1:54:26 PM • DeLonghi EC155... • Answered on Jan 10, 2019

Ec155 delonghi

if you have an ohmmeter, disconnect the cables that feed the resistance and connects the ends of the meter should give a value of element 5 to 30 ohm, if you give infinite that is very high due replacement it, there are also two thermostats one limit and a control, if you use this meter their connections resistance removing the cables connecting them, the measurement should be 0, if it gives you another value or infinite must change.
4/17/2016 3:35:34 PM • DeLonghi EC155... • Answered on Apr 17, 2016

New out of the box. won't dispence water to

Hi. Is your pump working. Should be able to hear it. If its making a really loud noise then it could be an air lock in the line. Try using the hot water button to bleed the system. Also see if it will despence water wiyhout any coffee in handle. Dazza REPAIRER
2/13/2016 2:37:55 PM • DeLonghi EC155... • Answered on Feb 13, 2016

My Delonghi Ec155 will not pump water

your machine need to be decalcifying!
7/17/2015 9:42:30 AM • DeLonghi EC155... • Answered on Jul 17, 2015

I have ran hot vinegar water through, it sounds like it is laboring to "bring the water up" is the sound.. it takes a long time & it seems not enough pressure to force water through the coffee.

Could be several things.
  • In the bottom of the water tank is a spring loaded "valve" that may be stuck shut. It is much more common for it to be stuck open.
  • There is a filter in the suction line to the pump. There is a chance that the hot vinegar loosened something that is now plugging the filter.
  • The hot vinegar may have damaged the pump. Cold vinegar may have been a better cleaning fluid. (A cold citric acid solution seems to be popular too now days.)
  • If the relief valve was lifted (opened) during this procedure, it is possible that it is not seating tightly.
If this was my machine, I would replace the filter and pump because they are the most likely items to be a problem. It is not a hard job but one does have to be patient and careful. I would take a picture every time I removed something just to be sure I got it back together right. I've included a link to a part supplier part diagram. You can see the pump and filter. Good luck. DeLonghi EC155 Cappuccino Maker Parts
7/15/2015 4:04:01 PM • DeLonghi EC155... • Answered on Jul 15, 2015

Why does espresso maker OK light come on just 2 minuets after turning on?

Hi Rustfarmer, Inside the machine is a high-pressure canister that is used to super heat a predefined amount of water. Once the water has come to a boil, and reached a predefined pressure (15bar) and temperature, the light comes on once the pressure switch is made. If you have recently used the machine the canister will still be hot or if the water level is below the required minimum the time-to-ready will be greatly reduced causing the light to come on. However, if the light comes on and the water has not come to a boil, it could be due to a few reasons. If the light comes on and temperature / pressure not reached, it could be due to
  • a faulty heating element or pressure switch,
  • a blocked (due to calcification) water tube, causing the canister to heat up and super heating what ever water is left causing the pressure switch to be made.
These machines are mostly mechanical and requires very little maintenance. The above are the most common problems experienced. In the case of the pressure switch or heating element, I would suggest checking your warrantee and request a replacement/repair. In the case of calcification, check the De' Longhi website for a cleaning kit to decalcify the system (Recommended method). If your machine is outside its warrantee period and you do not want to spend the bucks, you could use a home made recipe of white vinegar and water (Not recommended, it could wear down the rubber seals). Just make sure that you rinse the machine thoroughly before making the next cuppa. Please let us know if you do not succeed and need further assistance.
12/28/2014 3:12:39 PM • DeLonghi EC155... • Answered on Dec 28, 2014

DeLonghi EC155 Doesn't Release Water

When I bought my EC155, I heated it up for 30 minutes and tried multiple times to run water through. After multiple attempts the water level remained unchanged. <br /> I was able to fix the problem by opening the bottom of the machine (4 star screws). After opening the bottom, I immediately noticed that one of the plastic pipes was not in the channel in which it was supposed to be and as a result was kinked and sealed off. I simply pushed it into the channel and that fixed the problem.
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