Panasonic NC-ZA1 U12

Hello,

Unfortunately my little Panasonic NC-ZA1 just left me. Error U12 occurs and flushing is no longer possible. I didn't find anything on the net about it. Does anyone have any idea what I can do to persuade the machine to make coffee again? Brew group was already out and is clean and moving. But this is also more likely the error U10... This morning it was only enough for one cup of coffee
I have to buy some soluble coffee first

Since this forum lives from participating, here are my previous findings:

You can find a nice disassembly instruction here:

Unfortunately only in Russian.

Looks like the pump's not pumping anything.
The pump is the model Ulka
E EP5GWMal
see where you can get it.

Since there are very few articles available for this machine, here is my solution.

I removed and disassembled the pump, cleaned it and reassembled it. According to these instructions

pumps like to clog or get clogged if you do not
descale
well or too
little.
The machine's working
again.

Quickly decalcified again and the coffee supply is back again

.