Here are the current facts of my Nivona research:
Had unscrewed the NTC, it had been mounted without conductive paste, but this did not bring any improvement in the subsequent assembly WITH conductive paste. I compared the temperature behaviour in the disassembled state with a similar NTC: At 18 degrees both had approx. 13 kOhm, at 30 degrees approx. 9 kOhm. That seems okay. Then I measured the temp. directly at the thermoblock: About 92 degrees. With steam readiness up to 125 degrees. When I then open the steam tap and measure the steam temperature, it drops to about 75 degrees within a few seconds. Is this an indication that calcification is still too strong? Recently he had descaled intensively twice, without a descaling program: descaling agent filled in highly concentrated and within 2 hours 5 times steam tap opened for approx. 8 seconds. If you switch off the steam after steam is drawn, the boiler will still have approx. 110 degrees for several minutes, is that normal? When I then press the coffee cup, it shows "Too hot" after a short run-up of the BG and lets some water automatically run into the drip tray. If I then press coffee again, water is drained a second time until the temperature of approx. 92 degrees is reached. Is there only one possible error in the controller?
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