Tip & How-To about Coffee Makers & Espresso Machines

Krups espresso machine keep asking me fill up the water tank even it is already full

Inside the water tank there is a magnetic float which is causing the problem. This float is moving always on the top of the water tank as you fill it with water and in reverse as the water level goes down then the float is moving down to bottom also. So as the magnetic float is moving up and down is giving the signal for the water level if it is full or empty.
So possibly now the float is stuck in the bottom and even if you have refill the tank this is still on the bottom of the tank. This can happen from many reasons.

First could be that the plastic column that the float is moving is full of scale and it can not move up and down freely any more so you can clean it from scale by decaling it and even clean it with a wire brush.


A second possibility could be that float have a tiny hole and some water enter in the float and this make it to stay on the bottom of the tank. You can visually inspect it and if possible you can dry out the water and weld with a super glue the hole if possible, if it cannot be fixed then you need a new float.
If you want to fix it temporary until you find a new float you can use a plastic clip or similar to secure it always on the top however you when the tank is empty it doesn't register so you would really have to keep an eye on the water level to avoid any other problems with the machine.
Good luck

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2 Answers

keep asking me fill up the water tank even it is already full


Inside the water tank there is a magnetic float which is causing the problem. This float is moving always on the top of the water tank as you fill it with water and in reverse as the water level goes down then the float is moving down to bottom also. So as the magnetic float is moving up and down is giving the signal for the water level if it is full or empty.
So possibly now the float is stuck in the bottom and even if you have refill the tank this is still on the bottom of the tank. This can happen from many reasons. First could be that the plastic column that the float is moving is full of scale and it can not move up and down freely any more so you can clean it from scale by decaling it and even clean it with a wire brush.
A second possibility could be that float have a tiny hole and some water enter in the float and this make it to stay on the bottom of the tank. You can visually inspect it and if possible you can dry out the water and weld with a super glue the hole if possible, if it can not be fixed then you need a new float.
If you wand to fix it temporary until you find a new float you can a plastic clip or similar to secure it always on the top however you when the tank is empty it doesn't register so you would really have to keep an eye on the water level to avoid any other problems with the machine.
Good luck

Apr 02, 2010 | Krups Small Appliances Espresso Machine

5 Answers

The Sensor Magnet for water tank does not float to the top


OK, first of all, I do not recommend my solution if you are forgetful or do not check your water level manually daily.

However, I found a super easy solution.

The way the unit works is to use a float in the water chamber with a magnet on the bottom. When their is enough water in the tank, the float rises and the magnet on the bottom floats to the top of the magnet chamber. When it floats up, it aligns with a sensor in the machine that allows the machine to operate. When the the water level lowers, so does the magnet and drops below the internal sensor disabling the machine with a "Fill Water Tank" error message.

To eliminate this error and allow the machine to operate, I simply popped off the lid to the magnet chamber with a butter knife and turned the water chamber up side down to let the magnet float fall out. Remember to empty the water first.

Here comes the highly technical part. Turn the magnet float upside down and slide it back into the float chamber. Since the actual magnet is on the bottom of the float it now is at the top allowing the internal sensor to turn off. No more error message!

The reason I do recommend this is because this completely defeats the purpose of the sensor and will most likely damage your machine if you run it without water. Keep you tank filled however and you will eliminate the frustration of a "float gone bad" keeping you from your morning caffeine.

Apr 08, 2009 | Saeco Incanto Classic Espresso Machine

3 Answers

water container full but low indication on


I think the water level is read by a magnetic pick up driven by a black floater located 3/4 way towards the back of the water tank.
Make sure this floater can move up and down in its pocket: you can see it through the walls so just shake the tank to see it move, and check that it floats up when you fill water

Mar 30, 2009 | DeLonghi EAM3500 Espresso Machine/Coffee...

1 Answer

I Have a Krups Espresseria automatic coffee machine & my problem is the water indicator in the water tank does not rise when the water tank is full so the machines keeps telling me to take the water tank out ,fill the water tank & put it back in.I Have try to shrink it with hot water & that only works for a couple of days,please help me.


Inside the water tank there is a magnetic float which is causing the problem. This float is moving always on the top of the water tank as you fill it with water and in reverse as the water level goes down then the float is moving down to bottom also. So as the magnetic float is moving up and down is giving the signal for the water level if it is full or empty.
So possibly now the float is stuck in the bottom and even if you have refill the tank this is still on the bottom of the tank. This can happen from many reasons. First could be that the plastic column that the float is moving is full of scale and it can not move up and down freely any more so you can clean it from scale by decaling it and even clean it with a wire brush.
A second possibility could be that float have a tiny hole and some water enter in the float and this make it to stay on the bottom of the tank. You can visually inspect it and if possible you can dry out the water and weld with a super glue the hole if possible, if it can not be fixed then you need a new float.
If you wand to fix it temporary until you find a new float you can a plastic clip or similar to secure it always on the top however you when the tank is empty it doesn't register so you would really have to keep an eye on the water level to avoid any other problems with the machine.
Good luck

Nov 17, 2008 | Krups Small Appliances Espresso Machine

6 Answers

Fill Watertank Message


The black thing floating in the water tank is a plastic shell with a magnet inside. If you clean it...make sure you reinstall it with the tapered (smaller) side down. There is a slight size difference BUT it will make ALL the difference in the world.

I had no idea there was a magnet in that black/greyish case. The direction of the casing is important.
I had the same problem and that solved it!

Jul 29, 2007 | Miele CVA615 Espresso Machine

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