I have a delonghi magnifica. The ! light stays on solid, and the cup lights stay on green solid. The infuser does move up and down when I unplug and re-plug, but eventually it sits in the up position, with the warning light in as described. I am able to remove the infuser and have cleaned it thoroughly with hot water. Any ideas? Thanks!

"The infuser has not been replaced after cleaning."
https://www.delonghi.com/Global/InstructionManuals/EN/EN-5713214231.pdf
(page #19)

See if the video helps. There are issues with all these machines.

https://www.google.com/search?q=Delonghi+Magnifica+coffee+machine+does+not+deliver+coffee+just+water+continuously

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Hello Karen,
I am not a service professional; however, I have owned 2 Delonghi espresso machines for 15 years now and done several service repairs on my machines and they are still running great! Was the machine running ok before removing the infuser?? Please be sure to read section 10.2 of your service manual. If not available, you can visit here to view manual https://www.seattlecoffeegear.com/assets/user-manuals/delonghi/delonghi-esam-3300-user-manual.pdf

Additionally, make sure you have inserted the infuser back onto the machine correctly. Review towards the end of section 10.2 where you must make sure the infuser is compressed back closed and upon inserting it onto the machine the red buttons must click that the infuser is installed correctly? Please see troubleshoot picture attached. Also be sure to clean your machine inside underneath the infuser as many coffee grounds are collected there after a period of time. I don't know how old you machine is, but replacing the o-rings on the infuser and greasing the moving parts (o-rings) is recommended. Be sure to use lubricant recommended for food contact. I hope this helps you get your machine back on track? If not, please upload a video to better help you. Good luck, Enrique

Switch the machine off, AND pull the plug, wait 5 minutes (to be sure) and turn it on. Then turn it off again, now the infuser should return to it's normal position where you can take it out.
If the descale button is still flashing, try descaling again. Was the procedure interupted before? That would be a reason the light keeps flashing.
Bert

Hi JB, not sure if you've junked your 3300 machine by now or had the problem fixed already. Nevertheless, allow me to share with owners of DeLonghi Magnifica Espresso machines who encounter similar problem to yours. Incidentally, mine is a Delonghi Magnifica 3200 which is very much the same as the 3300. Firstly, try to ascertain if the pump is working normally. When the machine is ready to brew coffee, turn ON the steam/hot water knob and see if it pumps normally and for more than 30secs at least. My machine could pump for short durations between 5secs to 20secs max before the water light came on. I checked the flow meter connection but is all seemed well. I noticed signs of water leak (dried up chalky water stains) where the steam wand exits the control panel. Upon opening up the control panel, I noticed a larger patch of dried up water stains on the wand valve assembly. Bought a set of steam wand assembly replacement and to replace the leaking one. It's been some six month now and I'm enjoying my daily cuppa again. Btw, my Delonghi Magnifica 3200 has been serving me well for 10 years! Apart from the steam wand replacement and a faulty micro-switch, I only had to carry out the usual descaling and replacing worn out O-rings.

Could be the brew unit pushing the door open because there’s a coffee build up in the spring loaded chute that directs coffee from the brew unit to the outlet. Result is that the chute is jammed.

Needs cleaning. Might need disassembly. Be prepared to throw up. Mine was moldy.

motor no good may be pcb needs testing...

hi check u havent snapped the switch prodder ..its on the bucket rear .bottom..... change the wast bucket if broken. if its there still u may have a problem with the pcb .. we carry out repair service anywere we do a postal service

Turning off the power with the button is not enough. Instead, to remove the infuser: unplug the machine, wait a few seconds, plug it in again and turn the machine on. Even though you are technically turning it on, the machine will sense it was not turned off in an ok way, so it will "properly" shut off (and unlock the infuser).

I had the same problem.
As the machine is brand new, try washing the infuser under the hot water tap and then dry it. I then made a 2 cup long coffee and the red no water light stayed off.