Saeco Intuita HD8750/11 watertank

Thank you @jayeff . Do you have any other idea for something else that could cause the problem of the watertank light(led) keeps staying on.

Do you know of any disassembly guide which shows step by step how to remove Part #31?

Hi @galile ,

Here is a link that may be of some help in gaining access to the part.

i'm sorry, I don't know what else could cause the problem

removal of outside covers

Late comment: hoping it may be of use to others with a similar issue.

Although it *might* be the board, more likely is a failing reed switch or the floating magnet losing strength. Given that these days magnets are very high coercivity (don't weaken easily) the reed is the slightly more likely culprit. The reed switch will be found adjacent but separate from the magnet which floats up and down with water level. In my machine (Saeco Royal Cappucino) it is cubic, and slots into a retaining clip. Alignment and magnet strength are fiddly to get right if you decide to replace either or both and don't want to pay upwards of $100 for components that are readily available in an electronics store for a few dollars, albeit in different formats.