DeLonghi Magnifica 3300 Espresso Machine Logo
Kelly Fitzgerald Posted on Apr 06, 2015

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!

1 Answer

Rick Avra

Level 1:

An expert who has achieved level 1.

MVP:

An expert that got 5 achievements.

New Friend:

An expert that has 1 follower.

Hot-Shot:

An expert who has answered 20 questions.

  • Contributor 28 Answers
  • Posted on Apr 06, 2015
Rick Avra
Contributor
Level 1:

An expert who has achieved level 1.

MVP:

An expert that got 5 achievements.

New Friend:

An expert that has 1 follower.

Hot-Shot:

An expert who has answered 20 questions.

Joined: Jul 10, 2011
Answers
28
Questions
2
Helped
90040
Points
70

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)

  • 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.

×

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

0helpful
3answers

How do I make ventilate message go away

  • Check to make sure there's nothing inside your flow meter.
  • Check the flow meter wire connection at the board (cpu/pcb).
5helpful
3answers

My air-o-swiss 7142 humidifier keeps giving me the empty indicator light to signify no water in the unit even though the base and the tank are full. If I try to reset it comes on for seconds and then shuts...

The water sensor is a float in the mister area of the base. The float is off in one corner with a little plastic barrier around it and translucent cap over it. Make sure the float can more freely. If the float can move up and down but the light stays on, the reed switch (a switch controlled by a magnet built into the float) inside the unit might have been knocked loose, damaged or disconnected. The switch is actually inside the post that the float slides on, but it can only be accessed from the underside - inside the unit.
0helpful
1answer

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
0helpful
1answer

After de-scaling my girlfriend's keurig mini, the 'add water' indicator does not function properly. It always thinks there is water in the heating tank even when I know it is empty. Because of this, the...

You could be correct in your assessment and if so, as long as the device is under warranty it needs to go back for servicing. If you open the chambers, the warranty is Void and the device a boat anchor.
1helpful
2answers

Beans grind and are wet but coffee doesn't come out... it goes through the cycle and spits out a little. When cycle is complete, the water light comes on, but after priming the same thing occurs.

This tells me that either the grind is too fine and or the brew unit screen, and discharge tube needs to be cleaned. Try this first press the button for making a espresso using the manual function, do not add coffee through the door then press the brew button. If water flows freely then the grind is too fine, if you get the water prime error then the screen under the red o-ring on the brew unit needs to be cleaned.
0helpful
1answer

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.
1helpful
5answers

Saeco Italia SUP021 YR green lights and red water light flashing

You can't manually reset. The machine will have to do it. I had the same problem, two green flashing lights with one red (water) all 3 would just keep flashing and not turn solid. No coffee can be made or hot water. I could not pump prime. The problem was the steam wand was blocked with old milk residue. It needs unblocking or you will never pump prime. I could not unscrew the steam wand...so I let it sink in a glass full of hot water for a few minutes and then turned the water knob counter clockwise to push out the softened residue. After that, everything was good. When water started flowing out of the steam wand, the red light turned off and the green lights turned solid. The obvious answer to why you can't pump prime is there is a blockage somewhere and best to start with the steam wand. --Mabada
0helpful
1answer

Saeco Vienna Deluxe starts brew cycle then red light comes on

Hi
I think you put the tubes on backwards to the flow meter. The inlet side of the flow meter is by the pump and the exit to the pump is by the water tank. They cross.
3helpful
1answer

Do not know how to program fresh start oasis full button over fil

Remove the brew basket and water defuser (sprinkler head) it should come off with a 1\2 turn.
Place your measuring pitcher or empty pot in place.
Turn the main power switch off in back of unit.
Press and hold the Brew(full pot) button.
While holding the Brew(full pot) button turn the main power button in back to on.
Once the red light flashes over the Brew(full pot) button release it, then press it once to start the brew cycle.
Let it flow until desired level in pot or measuring pitcher.
Press the Brew(full pot) button once to Stop.
Press the Brew(full pot) button once again to lock the settings into memory. Memory will store the settings even if machine is unplugged.
Half pot button is automatically set.
0helpful
1answer

Brewing stops mid cycle

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.
Not finding what you are looking for?

1,310 views

Ask a Question

Usually answered in minutes!

Top DeLonghi Coffee Makers & Espresso Machines Experts

Mike Cairns
Mike Cairns

Level 3 Expert

3054 Answers

Kolbrun...

Level 3 Expert

1228 Answers

Paul Bade

Level 3 Expert

1818 Answers

Are you a DeLonghi Coffee Maker and Espresso Machine Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...