BAMBINO PLUS EMERGENCY- BES 500- ALL LIGHTS FLASHING
You have a problem. This is not a good situation. You can try pushing all the buttons, turning the machine on and off, factory reset, you can even shake it. Chances are you’re stuck with the flashing lights.
Now listen carefully, I haven’t got much time but I can tell you, I’ve repaired this fault a couple of times in the workshop. And on both occasions, I’ve had to replace, wait for it, the auto milk sensor. Which is in fact an NTC sensor on a spring. And the wires twist and break with repeated use. So to follow, is a quick photo montage of how I replaced the sensor. You can purchase a sensor for a very reasonable price here…






NTC KIT FOR BAMBINO
NTC Base Kit for Bambino Plus.
This is a difficult part obtain, you can substitute for the OEM version but you will need to cut and join the harness.

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Thanks so much for this — it restored my Bambino Plus after I had almost given up hope.
For others who may be contemplating this repair: my experience was that it’s quite tricky to get access to the electrical connection for the sensor. The white plastic case that holds all the electronics *will* slide out, but it’s necessary to loosen many wires from their wire management clips. This includes a bunch of black wires that come from the front panel — the top cover must be off to unthread these from their wire management. Even then the white plastic case can only slide partway out, making it tricky to connect the new sensor wire. It can be done! Good luck!
Agree with Douglas’s comment above. Thankfully mission accomplished.
Dave, so grateful for you posting this solution, got me back in business for the cost of just a few shop-bought coffees and restored sanity to the household 🙂
Replacing the sensor brought the machine back to life but I find the milk temps are too hot even at the lowest setting, any suggestions to sort that out or am I stuck manually frothing from now on?
I managed to sort mine out using the instructions and the tip from Doug in the comments. I also had to unplug the front panel and remove the wiring from their guides to create enough slack to wiggle out the electronics box far enough to connect the new sensor and disconnect the old one.This is the hardest bit of the process. The connector for the sensor is buried deep within the machine towards the front and not easily accessible.
Some tips I picked up on the way:
Removing the bottom cover is a matter of removing the screws as per the article but the front side of the machine under the drip tray is also held by clips which just needs a bit more force to pop out than you might think.
It’s a similar story for the back cover a few screws and a bit of force for the clips.
The top cover just slides off towards the
Hi
I have just put a new sensor in mine, however all of the lights are still flashing, any ideas?
This fixed my coffee machine. Thankyou!
Only blog out there with a part and solution.
The bit where they leave you to work out where to plug the part in yourself could have had a bit more detail for a beginner.
Overall very happy and 5 days shipping to the UK was amazing
Hi,
My bambino is not heating. Water still flowing but no flashing lights. Have tried Descale x 2. Still not heating. Could it still be the ntc sensor even though lights aren’t flashing?
Cheers