Posted by: Kaffelover February 16, 2024 10:58 am
Hi all!
I have a Miele CVA 7845 coffee machine.
The machine was working great, 2 weeks ago it stopped in the middle of the cup and displayed brewing unit error.
I replaced both the drive unit and the brewing unit (the brewing unit was not faulty though). The error code has disappeared and was not displayed in the service menu.
When I start the machine, the message appears: empty and insert drip tray and grounds container.
Both contacts and container are clinically cleaned. The machine displays the same error regardless of whether the container is in the machine or not.
Both the contacts in the machine and on the container are cleaned, there is no water, dirt or leaks in the machine. When I measure the contacts with the machine switched on, they show about 28 V when idling and about 40 V when the contacts are pressed. As I said, the machine does not show any error codes in the service menu.
Does anyone have any ideas?
Incorrect contact to the assembly?
Connection cable to the assembly?
Motor damage to the 12-24 control valve?
Posted by: kaffeechris February 18, 2024 08:01 pm
Hello, I think there was a similar problem with the Melitta Bistro KVAs. Two electrolytic capacitors were usually the main culprit there.
Perhaps this will bring you closer to a solution.
Posted by: Kaffelover February 20, 2024 09:43 am
QUOTE (kaffeechris @ Sunday, February 18, 2024, 8:01 pm) |
Hi, I think there was a similar problem with the Melitta Bistro KVAs. Two electrolytic capacitors were usually the main culprit there. The inner workings of these two KVAs are probably very identical. Perhaps this will bring you closer to the solution. |
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