Dolce Gusto coffee machine - the red light is on all the time

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#31 18326741 08 Dec 2019 12:20

rl_soft rl_soft

Level 11

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Post #31
18326741 08 Dec 2019 12:20

Hello,
I will stick to the topic, because most of them have very similar failure symptoms I have an Oblo KP110 which had a red diode, but after replacing 2 capacitors (220nF and 470nF) it started to come back to life, unfortunately not quite. Now the effect is that after switching on, the red LED lights up immediately (without pressing the button) for 2-3 seconds, then the green LED flashes 10 times and the red LED lights up all the time again. What can I diagnose and replace?

Regards
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#32 20691321 12 Aug 2023 20:50

Antek.L Antek.L

Level 9

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Post #32
20691321 12 Aug 2023 20:50

Good morning.
I won't start a new topic because the problem is similar. Namely, after pressing the button, the button will blink red twice and go out. Holding down the button starts flashing green indefinitely.
The patient is Dolce Gusto KP1006.
I checked the heater with a meter, 38.2 Ω, and the NTC sensor, 35.3 Ω.
After disconnecting the power, I checked the heater housing and it is hot. I guess the heater has a bad lead though.
What may be the problem?
Thanks in advance for your help.
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Topic summary

The discussion revolves around issues with Dolce Gusto coffee machines, particularly concerning persistent red lights indicating operational problems. Users report various models, including the Circolo, Piccolo, and KP series, experiencing symptoms such as blinking red lights, failure to heat water, and difficulties during descaling. Common troubleshooting steps include checking the heater, NTC sensor, and triac components, with suggestions to use a multimeter for diagnostics. Some users have successfully resolved issues by holding down buttons or replacing faulty components like capacitors and switches. The conversation highlights the need for professional service in some cases, especially for complex electrical failures.
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