Problem with Nespresso Le Cube
Posted by: Kaffee_JR October 06, 2013 01:37 pm
Hello,
at my "Le Cube" the buttons for the small and large cup flash alternately back and forth after switching on. Does anyone know what that means?
Thanks and many greetings, Jörg
Posted by: Kaffeeliebhaber October 06, 2013 11:22 pm
Hello,
If it flashes regularly about twice per second then the machine wants to be decalcified. Do not use vinegar, it is best to use Crest Active or Swiss Lime Clean Descaler.
Posted by: Guest October 08, 2013 09:10 pm
Thanks for the tip,
but how do I decalcify if the machine doesn't respond to anything?
Posted by: Kaffeeliebhaber October 09, 2013 08:41 am
Hallo
May be that the control is stuck in the decalcification program.
Only staying power will help. 
Hold down both keys and turn them on after 10 seconds release keys then just leave them on for one hour or longer. Try the whole thing more often. Then disconnect from the mains for another hour.
At some point the flashing frequency is lower (machine heats up) and then both lamps stay on (standby).
This way I have revived a Citiz before, took 4 hours. You can disregard the lever which is not queried.
Posted by: Gast_Sven May 07, 2014 11:29 am
Hello,
I am only writing here because I had the same problem and wanted to tell you what was going on with me. Maybe it helps someone.
Symptoms:
Switching on, machine "warms up" so the power button flashes slowly for about 2-3 minutes. The two coffee buttons then flash quickly back and forth as described above. Nothing works anymore.
Diagnosis:
What I found very helpful was the hints from "Frahlingliebhaber" to press and hold both keys and then switch on the machine. After approx. 5 seconds, the machine allows water to run through for a further 5 seconds. So on the one hand (in an admittedly arduous mode) you could do a decalcification, but that wasn't my problem. On the other hand, what you can determine very well with it is whether the heating still works. So: Switch on once as normal and wait until the 2-3 minute "heating phase" is over and the keys flash alternately. Then switch off again, keep both keys pressed and switch on again. Wait until the water comes and check if it is cold or hot. I was cold. That means the heater's not working. Therefore, the coffee machine has also signalled an error (= alternating flashing), because after several minutes it "heat up" runs into a timeout and then gets "still cold" signaled by the sensor.
This can have two main causes: 1. The desoldering fuse on the thermoblock has melted through. 2. The switching relay is broken. Both can be checked with a multimeter when the machine is screwed on. This is somewhat difficult to achieve as Nespresso has kindly installed screws with special heads. A little pliers will help. Then it is best to screw in normal screws (the normal device screws for flush-mounted sockets of the electrical installation (3.2 x 15) work quite well here).
In my case it was the relay. If this is the case, the diagnosis can also be carried out more easily: Normally you can hear the relay switch clearly after switching on in the warm-up phase. I didn't hear anything more about me.
Therapy:
In my case: Replace relay. This is a bit hard to get part, but I bought another one from Conrad (of course it has to fit regarding voltage and current and should fit halfway) and soldered it in with wires, because it didn't fit directly on the PCB. After that everything went fine again :-).
All in all it took about 2 hours (without the time to get the relay, but including the whole troubleshooting) and left the good feeling of having repaired something instead of throwing it away. :-)
Hoffe this helps somebody,
Sven
P.S. If it was your desoldering fuse and not the relay, I would be careful with repairing it. This would mean that it has become too hot (it sits directly on the thermoblock). Since this can happen again at any time, I would first look for the cause for it (defective temperature sensor, etc.). Otherwise the device might really burn down...
Posted by: Kaffeeliebhaber May 09, 2014 01:39 pm
Hello,
Well solved the problem
I have a few comments to make:
The Citiz models and most other Nespresso machines don't have a relay anymore but a triac with which they control the heating.
When the heating coil is burnt out it also comes to this error pattern.
When the thermal fuses are triggered, the electronics also gets no more current and the LEDs can no longer display flashing signals.
I already had twice the picture that water was sprayed onto the circuit board due to a leak and then the heating was constantly controlled. Result the thermal fuses (167 degrees) and partly also the heating coil burned through.
If the LEDs flash irregularly you can also change the two MKS capacitors on the board. They form a capacitive voltage divider which forms the power supply. If the capacitors lose capacitance, the voltage changes and the electronics no longer works as they should.
Posted by: Gast_Martin August 11, 2014 01:29 pm
@ Guest Sven
I also have the problem with the relay that does not switch.
Can you tell me which relay is the right one from Conrad.at,
or what the coil voltage is,according to the board I measured 18 Volt,
can that be right?
Thank you
Posted by: Gast_Stefan October 22, 2014 09:17 am
Hello everyone,
I would also be grateful for hints which relay to buy from Conrad to fit into the Le Cube!
Many thanks,
Stefan
Posted by: AlfredJPK55 March 09, 2015 09:11 am
When the thermal fuses are tripped the electronics will not get current anymore and the LEDs will not be able to indicate flashing signals anymore.
I already had the picture twice that due to a leak AND which relay is the correct one from Conrad.at,
or what is the coil voltage, according to the board I measured 18 volts,,,,,,,,,,,,,
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Posted by: MHD May 30, 2015 02:03 pm
| QUOTE (Gast_Stefan @ Wednesday, 22.October 2014, 09:17 hrs) |
| I would also be grateful for hints on which relay to buy from Conrad to fit into the Le Cube! |
The question is a bit old, but for others there might be an answer. still helpful.
Original was in my Krups Nespresso Le Cube XN 5000 the subminiature relay Hongfa HF3FD-1/048-HS3F was installed.
I have used a Zettler AZ943-1CH-48DE as a replacement, but it is only Class B instead of F (only 70 °C instead of 85 °C max. ambient temperature in operation); it is a change-over switch, but the superfluous second contact can simply be bent before soldering.
The replacement relay is available at http://www.conrad.de/ce/de/product/503615/Miniatur-Print-Relais-AZ943-15-A-Zettler-Electronics-AZ943-1CH-48DE-48-VDC-1-Wechsler-Max-15-A-Max-30-VDC300-VAC or http://www.voelkner.de/products/78026/Miniatur-Relais-Zettler-AZ943-1ch-48de.html (cheaper shipping) for 1,80 € + shipping (May 2015).
When disassembling and assembling http://www.computersolutions.cn/blog/wp-content/uploads/2011/09/Krups-Cube-Nespresso-Service-Manual-xn5005-manual.pdf Service Manual helped sufficiently well.
Posted by: Steve06 August 24, 2016 10:32 pm
On my Delonghi Lecube, which is now at least 6 years old, the cup keys have now also started flashing quickly and alternately.
When I carry out a descaling process (both with the Nespresso descaler set and with the descaler of dm), by pressing both keys before switching on so that liquid is forced to pass through, the coffee preparation works for a short while immediately after the descaling process has been completed, d.h. the two cup buttons light up constantly.
After switching off I am back at the starting point.
Question:
Can it also be the relay for me? I've soldered before and I'd trust me to trade it. What about the service manual for opening the door, where to get the ?
Best greetings
Steve
Posted by: Guest February 28, 2018 01:57 pm
| QUOTE (Frahlingliebhaber @ Wednesday, 09.October 2013, 08:41 hrs) |
| Hallo May be that the control is stuck in the decalcification program. Only staying power helps.  Hold both keys down and turn them on after 10 seconds of releasing the keys, then simply leave them on for one hour or longer. Try the whole thing more often. Then disconnect from the mains for another hour. At some point the flashing frequency is lower (machine heats up) and then both lamps stay on (standby). This way I have revived a Citiz before, took 4 hours. You can disregard the lever which is not queried. |
Thanks for the tip, worked wonderfully ! Machine is running again !
Posted by: Liberty October 13, 2018 10:27 am
Hello,
Same flashing problem, and I'm a pretty impatient person.
Posted by: Gast_Boris August 08, 2019 01:11 pm
| QUOTE (MHD @ Saturday, May 30, 2015, 14:03 hrs) | ||
The question is a bit old, but for others an answer may still be helpful. The original subminiature relay Hongfa HF3FD-1/048-HS3F was installed in my http:///kaffeemaschinen/krups/623_nespresso_le_cube_xn_5000/index.php. I used a Zettler AZ943-1CH-48DE as a replacement, but it's only Class B instead of F (only 70 °C instead of 85 °C max. ambient temperature in operation); it's a change-over switch, but the redundant second contact can simply be bent over before soldering. The replacement relay is available at Conrad or Voelkner http://www.voelkner.de/products/78026/Miniatur-Relais-Zettler-AZ943-1ch-48de.htmlcheaper shipping) for 1,80 € + shipping (May 2015). http://www.computersolutions.cn/blog/wp-content/uploads/2011/09/Krups-Cube-Nespresso-Service-Manual-xn5005-manual.pdf service manual was of sufficient help during disassembly and assembly. |
It's been a very, very long time, but...
Would this product also fit (also at Contad)? -->
Finder 36.11.9.048.4011 Print Relay 48 V/DC 10 A 1Max.
Temperature here is 85°Thanks
& GreetingsBoris
Posted by: Xcoder August 25, 2019 07:01 pm
| QUOTE (Frahlingliebhaber @ Friday, 09. May 2014, 13:39 Uhr) |
| The Citiz models and most of the other Nespresso machines don't have a relay anymore but a triac with which they control the heating. If the heating coil is burnt out, this error pattern also occurs. When the thermal fuses are tripped, the electronics also no longer receive power and the LEDs can no longer display flashing signals. I had already twice the picture that by a leak water is sprayed on the circuit board and then the heating was constantly controlled. Result the thermal fuses (167 degrees) and partly also the heating coil burned through. If the LEDs flash irregularly, you can also change the two MKS capacitors on the board. They form a capacitive voltage divider which forms the power supply. If the capacitors lose capacitance, the voltage changes and the electronics no longer works as they should. |
| QUOTA |
| If the LEDs flash irregularly, you can also change the two MKS capacitors on the board. They form a capacitive voltage divider which forms the power supply. If the capacitors lose capacitance, the voltage changes and the electronics no longer works as they should. |
Did you remember which type the two MKS condensers had?
Greetings Xcoder
Posted by: ghost October 29, 2019 10:03 am
Hello,
my EN-95 ever had one
220nF X2 275Vac680nF X2 275Vachatten
both only ~10% of their capacity - did not know that
MKS condensers also age.
Machine runs like new again - THANK YOU for the tip!
best regards
Posted by: Gast_noob November 13, 2019 08:02 pm
Hi, I bought the DeLonghi 685.
The 2 lamps for the cups
flash with me after the foaming. The
manual states that the lever for the nozzle is not set to 0. The lever is at 0,
but when I let off the steam, the two buttons stop flashing. That's what
happens when you press
a cup button under the foam.
Then all that comes out is hot water and no more steam.
Shouldn't the excess pressure be released automatically when you set it
to 0?
Posted by: Gast_Fritz October 10, 2020 12:11 pm
@Frahlinglover
Your descriptionhelped
me a lot.
My Le Cube makes me a wonderfulcoffee
again.
Big thanks to everyone here in the forum for your really helpful
tips.
LG Fritz
Posted by: oren November 01, 2020 10:02 am
| QUOTE (Gast_Sven @ May 07, 2014 11:29 am) |
| Hello, I am only writing here because I had the same problem and wanted to tell you what was going on with me. Maybe it helps someone. Symptoms: Switching on, machine "warms up" so the power button flashes slowly for about 2-3 minutes. The two coffee buttons then flash quickly back and forth as described above. Nothing works anymore. Diagnosis: What I found very helpful was the hints from "Frahlingliebhaber" to press and hold both keys and then switch on the machine. After approx. 5 seconds, the machine allows water to run through for a further 5 seconds. So on the one hand (in an admittedly arduous mode) you could do a decalcification, but that wasn't my problem. On the other hand, what you can determine very well with it is whether the heating still works. So: Switch on once as normal and wait until the 2-3 minute "heating phase" is over and the keys flash alternately. Then switch off again, keep both keys pressed and switch on again. Wait until the water comes and check if it is cold or hot. I was cold. That means the heater's not working. Therefore, the coffee machine has also signalled an error (= alternating flashing), because after several minutes it "heat up" runs into a timeout and then gets "still cold" signaled by the sensor. This can have two main causes: 1. The desoldering fuse on the thermoblock has melted through. 2. The switching relay is broken. Both can be checked with a multimeter when the machine is screwed on. This is somewhat difficult to achieve as Nespresso has kindly installed screws with special heads. A little pliers will help. Then it is best to screw in normal screws (the normal device screws for flush-mounted sockets of the electrical installation (3.2 x 15) work quite well here). In my case it was the relay. If this is the case, the diagnosis can also be carried out more easily: Normally you can hear the relay switch clearly after switching on in the warm-up phase. I didn't hear anything more about me. Therapy: In my case: Replace relay. This is a bit hard to get part, but I bought another one from Conrad (of course it has to fit regarding voltage and current and should fit halfway) and soldered it in with wires, because it didn't fit directly on the PCB. After that everything went fine again :-). All in all it took about 2 hours (without the time to get the relay, but including the whole troubleshooting) and left the good feeling of having repaired something instead of throwing it away. :-) Hoffe this helps somebody, Sven P.S. If it was your desoldering fuse and not the relay, I would be careful with repairing it. This would mean that it has become too hot (it sits directly on the thermoblock). Since this can happen again at any time, I would first look for the cause for it (defective temperature sensor, etc.). Otherwise the device might really burn down... |
men idont now how to thank you friend
my la cube back to normal again
Posted by: RSKusi March 30, 2021 01:19 am
| QUOTE (Guest_Boris @ Thursday, August 08, 2019 at 1:11 PM) | ||||
Been a very-very long time, but.... Would this product also fit (also at Contad)? Finder 36.11.9.048.4011 Print Relay 48 V/DC 10 A 1Max. Temperature is here 85°Thanks & GreetingsBoris |
Did it work for you with this relay?
Posted by: Guest April 26, 2021 11:08 pm
hello, 90% relay is defective. 10A 48V and must not be original .I have a thick relay put aside minus and heating with 1.5mm and switch inputs with thin wire soldered and insulated works perfectly . Relay from 30v is enough but amps must be +10a.have fun.
Posted by: Gast_marina May 05, 2021 08:31 am
QUOTE (Guest_Boris @ Thursday, August 08, 2019 at 1:11 PM)
QUOTE (MHD @ Saturday, 30 May 2015, 14:03)
QUOTE (Guest_Stefan @ Wednesday, October 22, 2014, 09:17 PM)
I would also appreciate any advice on which relay to buy from Conrad to fit in the Le Cube!
Been a very-very long time, but....
Would this product also fit (also at Contad)?
Finder 36.11.9.048.4011 Print Relay 48 V/DC 10 A 1Max.
Temperature is here 85°Thanks
& GreetingsBoris
Hi Boris,
Did it work for you with this relay? 36.11.9.048.4011 Print Relay 48 V/DC 10 A 1Max.
I am having thge same issue and I cannot find the HF3FD 048-HS3F 
thanks
Posted by: Gast_Marina May 05, 2021 01:04 pm
| QUOTE (Guest @ April 26, 2021 11:08 pm) |
| hello, 90% relay is defective. 10A 48V and must not be original .I have a thick relay put aside minus and heating with 1.5mm and switch inputs with thin wire soldered and insulated works perfectly . Relay from 30v is enough but amps must be +10a.have fun. |
hello thank you
can you please send me an example of relay that can replace the original and also the scheme, how did you connect it?
Posted by: Gast_Marina May 05, 2021 01:12 pm
| QUOTE (MHD @ May 30, 2015 02:03 pm) |
| <!--QuoteBegin-Gast_Stefan+Wednesday, 22.October 2014, 09:17 hrs--></div><table align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Gast_Stefan @ Wednesday, 22.October 2014, 09:17 hrs)</td></tr><tr><td id='QUOTE'><!QuoteEBegin-->I would also be grateful for hints on which relay to buy from Conrad to fit into the Le Cube! [/QUOTE] The question is a bit old, but for others there might be an answer. still helpful. Original was in my <a href='/coffee makers/krups/623_nespresso_le_cube_xn_5000/index.php' target='_blank'>Krups Nespresso Le Cube XN 5000</a> the subminiature relay Hongfa HF3FD-1/048-HS3F was installed. I have used a Zettler AZ943-1CH-48DE as a replacement, but it is only Class B instead of F (only 70 °C instead of 85 °C max. ambient temperature in operation); it is a change-over switch, but the superfluous second contact can simply be bent before soldering. The replacement relay is available at http://www.conrad.de/ce/de/product/503615/Miniatur-Print-Relais-AZ943-15-A-Zettler-Electronics-AZ943-1CH-48DE-48-VDC-1-Wechsler-Max-15-A-Max-30-VDC300-VAC or http://www.voelkner.de/products/78026/Miniatur-Relais-Zettler-AZ943-1ch-48de.html (cheaper shipping) for 1,80 € + shipping (May 2015). When disassembling and assembling http://www.computersolutions.cn/blog/wp-content/uploads/2011/09/Krups-Cube-Nespresso-Service-Manual-xn5005-manual.pdf Service Manual helped sufficiently well. |
hello
How did you soldered the Zettler AZ943-1CH-48DE on the circuit board?
can you please show a diagram
thanks
Posted by: Gast_marina May 06, 2021 10:13 am
I found the orignal relay on ebay from a seller, it took me a few days but in the end I contacted some ebay Chinese sellers and one of them had this relay @ 48V and he listed it on ebay
https://www.ebay.com/itm/114795170311
Posted by: FRAU HOLLE March 06, 2022 04:00 pm
| QUOTE (Frahlingliebhaber @ Wednesday, 09 October 2013, 08:41 h) |
| Hello Can be that the control is stuck in the decalcification program. Since only perseverance helps. Hold both buttons and turn on after 10 seconds release buttons then just leave on for an hour or longer. Try this several times. Then disconnect from the mains again for an hour. At some point the blinking frequency is lower (machine heats up) and then both lamps stay on constantly (standby). I have already revived a Citiz in this way, it took 4 hours. You can disregard the lever that is not queried. |
Thank you, my 12 year old Cube was stuck in descaling mode. This answer seemed to me the closest, it worked, already in the first run, now's first an espresso
Posted by: Gisela Stupp May 28, 2022 02:26 pm
| QUOTE (Frahlingliebhaber @ Wednesday, 09 October 2013, 08:41 h) |
| Hello Can be that the control is stuck in the decalcification program. Since only perseverance helps. Hold both buttons and turn on after 10 seconds release buttons then just leave on for an hour or longer. Try this several times. Then disconnect from the mains again for an hour. At some point the blinking frequency is lower (machine heats up) and then both lamps stay on constantly (standby). I have already revived a Citiz in this way, it took 4 hours. You can disregard the lever that is not queried. |
I am already 80 years. Worked for me right away????????????????????
Posted by: Mica August 12, 2022 10:09 am
Tried and true solutions are the best - it worked!!! I was already full of grief and on the verge of unscrewing.... Electronics failure on mine too - and I suspect a sudden long power outage messed up the electronics.
Thanks! 
Posted by: THIE54200 December 10, 2023 11:44 am
Hello,
Please note that the small cup / large cup buttons flashing for some time after power-up does not necessarily mean that the machine requires descaling.
In my case, after power-up => no heating at the boiler => machine goes into fault mode with small cup / large cup buttons flashing.
Diagnosis = heating relay coil on electronic board out of order (HF3FD-1 048-HS3F) replaced by FINDER relay 36.11.9.048.4001 ordered from Conrad, => after this troubleshooting machine OK
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