Question about DeLonghi DCM900 10 Cup Beaker Style Seamless Brushed Aluminum Coffee Maker

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DMC900 coffee maker De Longhi not working at all :water in.

Switch on, light on, no heating. Don't know if that 's the printed circuit or the heating element. Everything inside seems OK. No loose connection or wire.

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  • Anonymous Feb 04, 2009

    Same problem here. After 3 months one day it stopped working, no heat, switch light comes on, reset switch seems to work as it lights up the activity light, but it won't heat the element or pump water. Circuit board has no burn marks.

  • johnson9631 Apr 18, 2009

    My DCM900 did the same thing! Of course the warranty just ran out. I took it apart and I think I figured out what the problem is. There are two thermal fuses on either side of the boiler. One of the two was open when I checked it with my Ohmmeter. Anyone know where to buy parts?

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3 Suggested Answers

espressonist
  • 1711 Answers

SOURCE: Descaling De Longhi IFD Expresso Coffee Maker

In order to proceed with decaling of the espresso machine you need to have the solution appropriate for decaling an espresso machine.
Different brands of espresso machines, like Krups, Saeco, Gaggia e.t.a. have their own brands of decaling solutions. You should know that all of these are similar products so you can use them in all different bands if you don't have the one of you specific brand without any problem. So if you have De longi , Krups machine and you can only find Saeco decaling solution you can use it with the same results.
One thing you should have in mind Never use any Vinegar as a decaling solution since this will destroy some parts of the machines not instantly but in long term since vinegar is corrosive to this parts.
So the first thing is to remove any water fitters or small softeners that are included in you water tank. Fill the water tank with water up to maximum, dissolve your solution in the water you do need only two to three spoonfuls of solution.
Switch on the machine and wait to warm up. When the machine is ready you can turn the water knob and start getting some water in a pot. Leave it for a couple of minutes and then again the same. Do these until you draw off all the water with dissolve solution. After that leave the machine for more than 20 minutes. Remove then the remaining water with solution from the water tank, rinse it and fill it with fresh water. Now draw again continuously hot water from the machine in order to rinse it completely.
The last portion of hot water taste it to be sure that is pure clean and if not refill the water tank again and perform another rinsing.
Now the machine is ready to be used again.
Try to do decaling every 20 to 30 days.
If you plan to leave the machine unused for along time perform a decaling in order to avoid the possibilities of having the machine stuck when you will try using it again after a long time.
A machine which is used frequently every day is more secure to work fine even without any decaling but machines which are used rarely is more possible to have problems of stacking out in water outlet or coffee outlet.

Posted on Mar 20, 2010

mc1bean
  • 3053 Answers

SOURCE: my de'longhi magnifica coffee maker trips the

Yes it is possible, but here is what you have to do first, try a different outlet, that is not on same circuit , another part of house, even garage. If it still trips breaker, then more than likely it's a machine problem that is causing this. If it doesn't trip, then you can put it back where it was, but then have to maybe move other items on that circuit else where if your fond on that spot for the machine. Espresso machine have a huge surge electric demand when on heat mode. Like all kitchens they have several out let's on same circuit , if you still want it in same area, then have to move other stuff to other outlets that don't share circuit. And no you don't want to up circuit breaker to larger breaker as wires might not be rated to handle larger breaker. Let me know if my idea works, thanks mike from fixya

Posted on Jun 09, 2011

mc1bean
  • 3053 Answers

SOURCE: Every time I turn on my de'longhi magnifica coffee

Have to up the breaker at panel that controls that line of outlet circuits, but sometimes can not do this as wires in walls that control those outlets are on same circuit and rated at a curtain size breaker. Best and safest way to solve this is plug machine on different circuit that maybe not so many other items are sharing, like if your fridge or microwave is on that same circuit (breaker) it most likely will always trip. Let me know results if this solved problem, thanks Mr Bean Man

Posted on Jun 09, 2011

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2 Answers

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.

Dec 28, 2014 | DeLonghi EC155 Espresso Machine

1 Answer

General warning coming up in heating cycle.Not working at all.


For DeLonghi Perfecta ESAM5500 Fully Automatic Bean to Cup Coffee Maker Team De-Brewerz.com says:

1. General Alarms should be taken care by authorised delonghi technician only. Please do not try to fix yourself as it is related to safety.

2. This error occures due to loose wirings, opened water circuit, failure of heating elements and last failure of PC board repalcement.

3. Please contact your nearest Delonghi authorised dealer for technical support.

4. You can claim the warranty if recently purchased through De-Brewerz.com . If you are in India then contact us at de.brewerz@gmail.com

Nov 03, 2014 | DeLonghi Perfecta ESAM5500 Fully Automatic...

1 Answer

My de'longhi magnifica coffee maker trips the


Yes it is possible, but here is what you have to do first, try a different outlet, that is not on same circuit , another part of house, even garage. If it still trips breaker, then more than likely it's a machine problem that is causing this. If it doesn't trip, then you can put it back where it was, but then have to maybe move other items on that circuit else where if your fond on that spot for the machine. Espresso machine have a huge surge electric demand when on heat mode. Like all kitchens they have several out let's on same circuit , if you still want it in same area, then have to move other stuff to other outlets that don't share circuit. And no you don't want to up circuit breaker to larger breaker as wires might not be rated to handle larger breaker. Let me know if my idea works, thanks mike from fixya

Jun 08, 2011 | DeLonghi Coffee Makers & Espresso Machines

1 Answer

Every time I turn on my de'longhi magnifica coffee


Have to up the breaker at panel that controls that line of outlet circuits, but sometimes can not do this as wires in walls that control those outlets are on same circuit and rated at a curtain size breaker. Best and safest way to solve this is plug machine on different circuit that maybe not so many other items are sharing, like if your fridge or microwave is on that same circuit (breaker) it most likely will always trip. Let me know results if this solved problem, thanks Mr Bean Man

Jun 08, 2011 | DeLonghi Magnifica 3300 Espresso Machine

1 Answer

I Have a de' Longhi EN680 which keeps cutting out while operating. I Have to press the lighted button repeatedely to get a morning coffee.??


i came across this problem while i was trying to configure the machine to dispense more coffee. you have to re-calibrate the amount of coffee or milk it - consult the manual.

May 19, 2010 | DeLonghi EN680.M

1 Answer

Descaling De Longhi IFD Expresso Coffee Maker


In order to proceed with decaling of the espresso machine you need to have the solution appropriate for decaling an espresso machine.
Different brands of espresso machines, like Krups, Saeco, Gaggia e.t.a. have their own brands of decaling solutions. You should know that all of these are similar products so you can use them in all different bands if you don't have the one of you specific brand without any problem. So if you have De longi , Krups machine and you can only find Saeco decaling solution you can use it with the same results.
One thing you should have in mind Never use any Vinegar as a decaling solution since this will destroy some parts of the machines not instantly but in long term since vinegar is corrosive to this parts.
So the first thing is to remove any water fitters or small softeners that are included in you water tank. Fill the water tank with water up to maximum, dissolve your solution in the water you do need only two to three spoonfuls of solution.
Switch on the machine and wait to warm up. When the machine is ready you can turn the water knob and start getting some water in a pot. Leave it for a couple of minutes and then again the same. Do these until you draw off all the water with dissolve solution. After that leave the machine for more than 20 minutes. Remove then the remaining water with solution from the water tank, rinse it and fill it with fresh water. Now draw again continuously hot water from the machine in order to rinse it completely.
The last portion of hot water taste it to be sure that is pure clean and if not refill the water tank again and perform another rinsing.
Now the machine is ready to be used again.
Try to do decaling every 20 to 30 days.
If you plan to leave the machine unused for along time perform a decaling in order to avoid the possibilities of having the machine stuck when you will try using it again after a long time.
A machine which is used frequently every day is more secure to work fine even without any decaling but machines which are used rarely is more possible to have problems of stacking out in water outlet or coffee outlet.

Mar 20, 2010 | Coffee Makers & Espresso Machines

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