You will have to open up the machine from the top and take the mill apart. be careful as there are springs and balls which might be hidden in the coffe powder. you will also need to clean the rectangular tunnel going from the mill to the powder release. if you are not good at doing things yourself then you better give it to a service center. they should have about one hour of work with it.
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cleaning the brewing system will require descale. if you haven't already tried this method then consult your coffee machine user manual in the troubleshooting section.
if you are still reading then that means that things are worse. this part of the machine becomes dirty from spilled coffee ground beans and calcium buildup from hard water.
to gain access to physically clean the brewing system you'll need some tech screwdriver. i normally use the newelectronx usa tool kit, but you can buy others off amazon or ebay.
remove the water tank. remove any screws securing the housing. after removing the brewing system clean it and replace.
This fixes almost all the "beans will not feed or beans will not grind"
problems caused by coffee bean dust packed in the burrs. Oily beans
cause this problem more fequently.
a. Pour all the beans out the top.
b. Open the settings up all the way and see what else can be poured
out. Use your shop vacuum to **** grounds out the spout and backward
out the bean bin.
c. Pour in some instant rice and start grinding. Reduce the grind to
a small setting like six and then open the settings all the way again.
(The grinder will not start at a low setting with the rice in it. If
you let it stop, open the settings to about 16 before trying to
d. Pour out the rice and vacuum out the ground rice.
e. Adjust the grinder to your favorite setting and try a coffee grind.
Grind until most of the rice dust is expelled (any remaining trace of
rice dust will not affect the flavor of the coffee).
Remove the Brew Unit from the maschine and clean it very well und running water. Thn go into the Main menu and switch back all settings to factory defaults. Then take a vaccum cleaner and put the pipe in the small hole where the coffe falls into the brew unit (knock a bit on the maschin inside). Put out the bean container and do the same with the hole where the beans go into the grinder. Then put everything back in and start a cleaning process for the brew unit (do it 2 times). After that your Problems must be gone. The Problem is between the grinder and the brew unit. the grinded coffee has bee stuck and is not falling into the brew unit .... that happens when you use beans with lots of oil inside .... or coated beans .... they "glue" the chute .....
Your chute between the grinder and the brew unit is "glued" with coffee. Take out the the brew unit, clean it under water. Take a vaccum cleaner and put the pipe into the hole where the coffee falls into the brew unit. Move the bean container "hard" in and out ( knocking inside the maschin to loose the blockage). Switch in the main menue all to factory defaults. Put the grinder "level" into the middle again. start a brew unit cleaning process. After that you coffee must be ok again. Do not use oily beans or coated beans. the block the chute.
The screens that the coffee grinds are squeezed in between are clogged. You need to remove the brew unit, remove the bottom screen, (should be one phillips screw in the center) and scrub the screens clean. You need to clean all of the really fine holes out so that the water can pass through. To prevent this in the future, use the rinse cycle on the machine frequently and also take the brew unit out and rinse it under hot water everytime you dump your waste unit.
in the self test does it flush the unit ?
If not you have to prime the unit by allowing it to pump hot water through the frothing valve. Open the valve and the pump should pulse water out. After this the machine should indicate it is in the operating mode for coffee