Question about DeLonghi EC155 Espresso Machine

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Delongi ec155 pump not coming on - DeLonghi EC155 Espresso Machine

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Posted on Jan 02, 2017

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You can download the user manual directly from Delonghi from this link

Posted on Sep 28, 2009

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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

May 30, 2015 | DeLonghi EC155 Espresso Machine


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.

on Sep 14, 2011 | DeLonghi EC155 Espresso Machine

1 Answer

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.

Feb 09, 2014 | DeLonghi EC155 Espresso Machine

1 Answer

Coffee stops flowing

Run a 50/ 50 vinegar & distilled water solution through it. Only use distilled or bottled, purified drinking water from now on.

Feb 17, 2013 | DeLonghi EC155 Espresso Machine

1 Answer

Delonghi EC 155 does not make coffee even after I put new filter

DeLonghi EC155 Espresso Machine so what does it do?Possible nothing,and do you know your last time you ran vingar though it to CLean it out?Normally solution is Vingar depend on size put 1-cup Vingar,half cup water,run it though.then run only water then next step in full pot,do this twice.Should work fine.

Aug 08, 2010 | DeLonghi EC155 Espresso Machine

1 Answer

Steam knob won't turn on brand new DeLonghi EC155

Try turning it COUNTER-CLOCKWISE. This is was got it "unstuck" for me.

Feb 21, 2010 | DeLonghi EC155 Espresso Machine

1 Answer


You can download the user manual directly from Delonghi from this link

Sep 28, 2009 | DeLonghi EC155 Espresso Machine

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