CuiZinieR
New member
Hi,
I just wanted to share the issue I encountered with an old Saeco Royal Professional and the fix that worked for me.
Description of the issue:
The screen would show FILL WATERTANK even if there was enough water in the tank. After some search on Internet, it seemed to come from a problem with the sensor located inside the machine.
How does the water level detection work? (according to my noob understanding)
In the water tank, there's a grey plastic block floating in a chamber sealed by a white plastic cap. Inside the block, there's a magnet. Under the hood, there's a reed switch aligned with the magnet. When the magnet is close to the switch, it means that there's not enough water. When the magnet doesn't trigger the switch, it means there's enough water as it's floating far enough.
Intervention:
Firstly, I took out the black block from the water tank which should not trigger the FILL WATERTANK message but the message still remained.
Secondly, I opened the coffee machine to access the cabling, found the reed switch and tested it with the black block:
Expected result: No FILL WATERTANK message => NOK
Expected result: FILL WATERTANK message => OK
Expected result: unknown => sometimes it worked, sometimes it didn't
Expected result: unknown => OK
Conclusion:
The switch doesn't have a normal behavior. But seems it works with the last position, I taped the block on the side of the switch and left the bundle on the right side of the machine.
CAUTION: there's no more FILL WATERTANK message even if there's no water so we must be careful about the water when using the machine.
PS: I had many photos and links to illustrate this message but the forum doesn't allow me to post them, so not my fault.
I just wanted to share the issue I encountered with an old Saeco Royal Professional and the fix that worked for me.
Description of the issue:
The screen would show FILL WATERTANK even if there was enough water in the tank. After some search on Internet, it seemed to come from a problem with the sensor located inside the machine.
How does the water level detection work? (according to my noob understanding)
In the water tank, there's a grey plastic block floating in a chamber sealed by a white plastic cap. Inside the block, there's a magnet. Under the hood, there's a reed switch aligned with the magnet. When the magnet is close to the switch, it means that there's not enough water. When the magnet doesn't trigger the switch, it means there's enough water as it's floating far enough.
Intervention:
Firstly, I took out the black block from the water tank which should not trigger the FILL WATERTANK message but the message still remained.
Secondly, I opened the coffee machine to access the cabling, found the reed switch and tested it with the black block:
- Switch w/o the block:
Expected result: No FILL WATERTANK message => NOK
- Switch with normal block position on top of it
Expected result: FILL WATERTANK message => OK
- Switch with up side down block position on top of it
Expected result: unknown => sometimes it worked, sometimes it didn't
- Switch with block besides it:
Expected result: unknown => OK
Conclusion:
The switch doesn't have a normal behavior. But seems it works with the last position, I taped the block on the side of the switch and left the bundle on the right side of the machine.
CAUTION: there's no more FILL WATERTANK message even if there's no water so we must be careful about the water when using the machine.
PS: I had many photos and links to illustrate this message but the forum doesn't allow me to post them, so not my fault.
Last edited:
