The water level sensor works thanks to the minerals in the water.

Some waters have very low mineral content and therefore cannot detect the water level, which is why the light remains white.

Check the mineral content of your water:

You can find this information on the bottle labels: the mineral content is shown as ‘dry residue’ or TDS on the bottles and must be greater than 150 mg:

Most mineral waters work, except for those with very low mineral content (e.g. Montroucou and Volvic in France).

Tap water also generally works very well (except in certain volcanic areas where it is very low in mineral content).

To be sure it's a water problem, you can test by putting in a few grains of salt (after this test, throw the water away). The detector should turn green.

Descale your machine regularly (every 2 months or every 100 coffees) to increase its performance and lifespan.

Descale the machine by filling it with a mixture of 50% white vinegar and 50% water.
Rinse 5 or 6 times with clean water.

Be sure to clean the grid regularly with a small brush.

Do not use extension cords or power strips.

Never run a cycle without water.

Some capsules take longer to pierce.

For intense or ristretto capsules, the machine can take up to 20 seconds to pierce the capsule, so you may need to wait a little after the stop button appears.

If this does not solve the problem, contact the Handpresso after-sales service: sav@handpresso.fr, who will take care of repairing your machine.