Delonghi has a wide line of super-automatic, espresso, and drip coffee makers, in addition to manufacturing capsule coffee makers for the Nespresso and Dolce Gusto brands. This article will focus on drip coffee makers and the most frequent problems to which they can be exposed.
Note: We will also deal with the case of combi coffee makers, but only to refer to the problems that affect the drip coffee maker part since the espresso zone has been dealt with in other guides.
Delonghi coffee maker does not dispense coffee
Delonghi drip coffee makers are devices with few components and are very well distributed; they are not very complex machines in their internal constitution. One of their main parts is the drip carafe heater, and although it is difficult to fail, it can happen.
In its drip coffee makers, Delonghi uses thermal fuses, whose function is to open the circuit if a failure and protects both the machine and the user. This type of coffee maker is designed so that an excess temperature or current does not damage its internal components.
The problem: When I start my Delonghi drip coffee maker, the thermal base of the drip carafe does not heat up, the machine does not make any sound, and no coffee comes out of the top of the carafe.
The cause: Possibly the thermostat is broken, or one of the two thermal fuses is blown.
The solution:
- Turn off and unplug the coffee maker.
- Disassemble the coffee maker.
- Access the thermal fuses and the thermostat.
- Check the continuity of these parts with a multimeter; if any of them do not give continuity, you must replace them.
- Reassemble the coffee maker.
Delonghi coffee maker dispenses very little coffee
Most problems in coffee makers are caused by the accumulation of limescale inside the machine. Regularly, limescale builds up on the walls of the pipes, clogging valves, and other parts that prevent the water from flowing with sufficient pressure.
The problem: Every time we try to prepare a coffee with our Delonghi drip coffee maker, we notice that very little coffee comes out of the drop zone. However, we see that the base does get hot.
The cause: There is a plastic tube with a valve inside, located at the outlet of the thermoblock dedicated to the preparation of drip coffee. If this tube becomes clogged by limescale, it will not allow the water to flow properly through the top of the drop zone. However, if the base continues to heat up, it is a sign that the thermoblock is working properly.
The solution:
- Turn off and unplug the coffee maker.
- Disassemble the coffee maker.
- Access the plastic tube, disassemble it and clean it with a little white vinegar. If it is impossible to clean it, replace it with a new one.
Delonghi coffee maker does not work at all
The fact that we can hear the water boiling indicates that the thermoblock is working properly. The coffee maker draws water from the reservoir and heats it to rule out that the water entering the thermoblock is a possible problem.
The problem: The coffee maker boils the water inside, but no coffee comes into the decanter.
The cause: There are two possible causes for this problem:
- The valve that presses the coffee carafe when placed in the machine is not working.
- An internal pipe that goes from the outlet of the thermoblock to the top of the coffee maker is disconnected.
The solution: In case the cause is the valve not working, make sure that the carafe is properly put in place by pressing the valve. If the carafe is in place, you should focus on checking the valve in depth.
And in case there is a disconnected pipe, you should disassemble the coffee maker and look inside for disconnected pipes at the outlet of the thermoblock to reconnect them.
