20 Most Recent DeLonghi EAM3400 Espresso Machine Questions & Answers

Thanks anonymous!

i had this problem, and have now finally figured it out and fixed it. the problem is that there is a solenoid valve sticking. i believe that the valve is used to relieve pressure after using the steam, and it vents the hot water directly to the tray. if you aren't diligent about descaling, or if there are water impurities, or if you use the machine infrequently, or for probably any number of other reasons, the valve can gum up and stick in the "open" position, continuously draining the water directly to the tray.

one easy way i've got my machine to work was to cycle steam on and off a few times, thereby signaling the valve to open/close, and unsticking the valve. you can see if it worked without wasting coffee by initiating a rinse cycle, and seeing if the water correctly comes out of the coffee nozzles.

if that doesn't work, you can disassemble the machine and tap on the valve. it has a square black solenoid ~1" square on top of a brass valve. it is mounted on the same bracket as the u-shaped heater. a few sharp raps on top may free up the valve.

if that doesn't work, remove the valve, and try to blow through it. if the valve is stuck open, air will go right through. hold the valve upright and tap it onto a hard surface (countertop, floor, etc.) try blowing through it again. when the valve is unstuck (and held in its normal operating position), you will not be able to blow through it.

once the valve is unstuck, run your machine through a descale process. that should take care of it.

The pump needs replacing

My Delonghi Magnifica door was popping open too when the machine would cycle on or off. I found that the shoot on the inside of the door was stuck. This chute is spring loaded. The chute guides the coffee from the diffuser to the dispenser ports. I think it must have been coffee build up on the back side of the chute making it stick. So when the diffuser passed by during cycling the chute would not move out of the way. This makes the door pop open. I cleaned the chute so that it moves freely and no more trouble.

Now you know why the price was so good!

Customer support at 866-528-8323 has been responsive. Bill

Howdy:) You can get parts and accessories for your Magnifica here: http://www.delonghiusa.com/index.php?texts&pid=15
Hope you are up and espressing asap:)

hi as you turn the machine on turn the steam knob fully ..this will bleed your system ... if it dont bleed through replace your pump or check filter inline right side of machine ... [turn machine off befor removing main covers } 07779933829

This is similar to my Saeco. i only drink black coffee so the steam function is very rarely used. When i went to use it recently got same as your description. this then set a 'blocked' code on computer which meant NO COFFEE! EEEKKK. I used an old soft drink bottle as a resevoir to operate the machine with covers off so i could see an issues. I started at the filter , blew that out with compressed air. then hoses...do 1 at a time ...tank to filter, filter to pump, pump to heat exchanger, heat exchanger to spout (watch this one as it is steam!) after a thorough strip and assemble i descaled and was good to go. now i make sure to use steam at least once a month.

It is likely that the coffee is ground too finely so if you turn the adjustment knob one click clockwise towards 7, while the coffee mill is working. Try clicking one click at the time until you are satisfied. Hope this works for you, Kolbrun