OC can mean faulty communication between the 2 boards, disconnect from mains & try again which you have probably already done. There is only 1 cable from the display pcb to the control pcb and that is to the top front of the side pcb.
OC can also mean the distributor is drawing too much power, if that's the issue just replace the distributor.
SOURCE: Error Code 9 on a Krups XP7240 Expresso machine
After I changed piston sealing I get the same error 09. It was caused by missing connection to the thermoblock temperature sensor. In my case both connectors for thermocouple were cracked. They are located directly on the body of thermoblock, below two fuses, covered by rubber housing. After I solder them again on the position error 09 disappeared. Unfortunately it is necessary to open at least front panel of the machine. Moreover I tink that there is also important to save polarity of those two cables.
SOURCE: Machine Fault Error No 06
The error 06 (comes after start up) and machine in auto test - happens because more than one problem. One of the compulory services, rinsing, change water filter, cleaning OR / AND descaling is out of date. Start off with one at a time and do ALL.
Reconfirm it by going into "Product Information" and confirm that the cycles since previous cleaning, descaling and water filter replacement is ZERO.
Your machine will NOT have start up problems any longer
Regards
SOURCE: I have a problem with my Krups XP7240, it is
You can just removed the water tank filter (the cylinder inside the water tank) and washed it up. (Actually the filter should probably be replaced). Fix it back in the water tank and tide it safety upon the exit ring.
Don't forget to unplug the machine BEFORE doing this.
Next, restart the machine and let it perform the automatic self testing.
SOURCE: I have a 12 month
You need to open the machine which is easy see my other post on leaking krups xp7240. The grinder can be taken out by removing two torix screws. Probably the electical brushes are gone. Take the grinder engine to a repair shop where they replace them.
SOURCE: KRUPS XP7240 leaking water
My XP7240 has the same problem. I went through all cleaning cycles and the filter in the boiler still gets clogged up with coffee oils. This causes back pressure and blows the boiler seal out. Easy replacement if you can turn a screw driver.
Part number for Seal: MS-5015004. You might as well change the Jack too. (the part that slides into the boiler that compresses the ground coffee. (this is a redesigned double seal unit) Part Number MS-0697072.
Both these parts you can get at http://www.krups.com/Tools/Contact/Contact.htm choose your country and email the parts list. Mine cost in Australia $27.00 including shipping.
Good luck.
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