Tchibo Cafissimo Compact - flashing red light and a sound signal

My sister gave me the Tchibo Cafissimo Compact (which she had used before).
The problem with it is that after pouring the water in and turning it on, the coffee machine does nothing but flashing the red light and a sound signal.
There is enough water, but there is this "message" anyway and I can't stop it.

Do any of you have any idea what's going on? What to check?

There is a float in the tank, it rises after pouring water?

No, nothing is floating in the water tank.

Hey, I have the same problem, maybe you got it right now? I would be grateful for help.

Press any coffee brewing button - no capsule. The system must fill with water. When it is finished filling, the light will stop flashing and the audible alarm will stop.

It is similar with me, the float is up, the red light is flashing, no button responds. Can you advise whether to the garbage can?

On my Tchibo Cafissimo Compact, the right red light was flashing. The cause was a dirty flow meter. Sediment in the water caused the impeller to stop spinning. After removing the back cover, the flow meter is easy to access, it can be dismantled and washed. The blocked flow meter causes that the processor has no signal about the water supply to the heater and does not turn it on - it signals an error.

Hey, who knows how to remove the back cover without breaking it? Even after unscrewing the bottom screws, the whole thing will not budge, so how do you get to the flow meter to take it apart and wash it?

I don't remember anymore, but I didn't have any major problems. There was no philosophy there. Look carefully, maybe some screws on the inside. I was definitely taking off the metal headband. I had easy access to all electrical components, which I also checked, they were ok. Only the flow meter did not rotate.

For me, the same, disassembled, the flow meter is spinning, the lamp continues to flash, I need to check if the signal gives, is there a Hall sensor?

I will not give my head, but there is probably an output from the open collector flowmeter. That is, power the flow meter, connect the pull-up resistor and see if it switches when turning.

>>18655499
The machine does not respond to any button. The water does not flow, the heater heats dry because the thermal fuse has burned out. After replacing the fuse, there is still no reaction. Save.

I have the same machine (second hand) and after turning it on, I just got a white light on the power button flashing for more than 1.5 hours and nothing happens. It does not respond to any button. Does anyone have a clue what is going on with it? Thank you.

Hey, I have the same problem. Over time, the float magnet probably loses its properties. I found a video on YouTube where a guy disassembles the tank and adds a magnet, and it works for him. I dryly took another magnet and by moving it around the housing with the tank removed, the coffee machine starts to see water, so this is clearly the cause. The only thing that worries me is that to get to the float, you basically have to break the tank because it is welded. Maybe there's a way to get it out without it. I'll think about it some more. If I come up with something, I'll let you know.

I experimented with this too. It is this: In the freshwater chamber, there is a float with a permanent magnet. If I pour water in, the float goes up and with it the magnetic field. Inside the machine, there is a coil that serves as a sensor. When the magnetic field moves upwards, the sensor detects this and signals the machine that there is enough water in the tank, and it switches on. If for some reason the magnetic field is no longer strong enough, the machine will no longer be able to detect the water level and will no longer turn on - only the red light will flash. Take a permanent magnet from an old hard drive or a magnetized screwdriver, fill the tank with water beforehand and move it from bottom to top at the back left of the outer casing - and hey presto - it tricks you into thinking something and goes again. But don't forget to fill in water, otherwise, it will break if you use it manually. I have this mini, the float may also be located somewhere else.

@Majnka
Thanks for the tip! After a week I was able to consume the delicious nectar of the gods again!

I found a way to fix the Tassimo Mini. I removed the back panel. There is a sensor there in black plastic. I filleted it about 1 mm from the bottom. The sensor went down and now detects the magnet in the water tank. If anyone is interested in this, I can help in more detail.

In my case, there was a kinked hose. I put in a profile on the housing and the problem disappeared.