Question about DeLonghi Magnifica 3300 Espresso Machine

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Water indicator light keeps coming on, even though tank is full. Unit stops brewing mid cycle and indicator light comes on.

Water flows freely when powering the machine on and off. Before I can get a full cup of coffee, I have to run a lot of water through the steam knob before the unit will brew a cup in its entirety. Possible air leak? Thank you for your help!

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  • 28 Answers

Do you mean the "Fill Tank" message? If so, I found the problem to be the magnetic switch triggered by the float in the water tank. Please confirm the message you see and I can provide more details.

Ok, it sounds like your unit might have the same problem mine did. I posted some of my findings in this thread:

http://www.fixya.com/support/t1898311-water_container_full_but_low_indication

Adding a magnet to the float helped for several months but then the problem came back. I found the root-cause to be the 'reed switch' (see picture in the other thread) and when I replaced it, it worked fine. Replacement parts like these are often available through web-sites (e.g. http://www.ereplacementparts.com)

Posted on Apr 06, 2015

  • 2 more comments 
  • Kelly Fitzgerald
    Kelly Fitzgerald Apr 06, 2015

    Yes! They call it a Water Indicator Light (empty/missing) on mine.Thank you, RA.

  • Kelly Fitzgerald
    Kelly Fitzgerald Apr 06, 2015

    Hey thanks, RA...my magnet moves freely but I will definitely start by adding a magnet to the float. Thank you very much!

  • Kelly Fitzgerald
    Kelly Fitzgerald Apr 09, 2015

    IT WORKED! Adding the magnet did the trick. Such an inexpensive and easy fix. I cannot thank you enough RA!

  • Rick Avra Apr 09, 2015

    I'm glad this helped. Note that I did eventually replace the reed switch but perhaps you're fix will last longer. Good luck.

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Posted on Jan 02, 2017

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What can I do to have the Ready to Brew light come on? I tried to slowly pour in water and fill water tank but doesnt work.


Be sure spray disk and brew gasket are properly installed in the
brew head.

Be sure the water supply is properly connected and the water
supply valve is turned
ON

Be sure the WATER TANK IS FILLED
BEFORE plugging the brewer into a receptacle, or otherwise
connecting brewer to electrical power
THE WATER TANK MUST BE FILLED

Place an empty decanter under the brew head. Lift
the pour-over cover then pour warm tap water into the pour-over
opening until water flows from the brew head. When water stops
dripping from the brew head, empty the container.

Once the tank is full of water,
connect the brewer to electrical
power. The heating elements will begin heating the water in the
tank.
When the water has reached the proper temperature, the
"READY To BREW" light will glow. http://www.cdccoffee.com/pdf/bloomfield-8571-8572-user-manual.pdf

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WATER LEVEL FLOAT DEVICE PREVENTS UNIT FROM TURNING ON,EVEN THOUGH WATER TANK IS FULL. REMOVED SOME FILTER MATERIAL WITH NO EFFECT. FLOAT IS FREE WITH NO RESTRICTION.


These hints are from the air o swiss webpage.
Q: No mist / unit is not working / empty indicator keeps flashing
A: Fill up the water tank. Check if water is flowing through the demineralization cartridge (attached to the water tank cap). If the water tank is full but there is only little water in the base it indicates that the water is now flowing through the demineralization cartridge.

  • Wait for 15 minutes to allow the mist to come out of the unit.
  • If the unit is not working and the empty light is not flashing you might have set the desired humidity too low and the current humidity level in the room is higher. That is why the unit switches off automatically.
  • If the empty indicator continues flashing and the tank is full, water is not flowing through the cartridge. Exchange the cartridge or the granules in the cartridge after 2-3 months, in areas with hard water exchange the cartridge after 1 -2 months. However, the demineralization cartridge and or the granules must be exchanged at the latest after 6 months or the unit does not reach its full performance.
If the granules are new, see the following instructions:

  • Make sure the cartridge and/or granules were soaked for 24 hours, water takes longer to filter through dry granules in cartridge and into the base. Next, remove 2 tablespoons of granules from the cartridge, and throw them away. Too many granules in the cartridge it does not allow water to flow from the tank to the base.
If your issue is with the float and not the mister, then you have to make sure the float is tripping the micro switch that turns the machine on. Some units the filter will not allow the float to hit the switch if the filter is not installed correctly. If everything is in correctly and the float is tripping the switch, then the micro switch must be faulty.

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Place your measuring pitcher or empty pot in place.
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Press and hold the Brew(full pot) button.
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1 Answer

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Sounds like dosage is too high and grind is too fine.

Rule of thumb with any saeco unit.

Do not grind any finer then 2 or your looking for trouble.

Open grinder, clean it out with a vac. Slapped it back on.

The reason it stops is grind is too fine, and the machine doesn't have enough pressure to pass threw the grinds, creates back pressure in the machine and the unit failsafes after a certain amount of time with and pressure.

Back pressure is what blew your boiler.

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