No steam or hot water out of Perfecta ESAM5500

I have a Delonghi Perfecta ESAM5500 and can get no steam or hot water out of the front nozzle. All I get is hearing the pump trying to pump out water/steam (groaning) but without either being released it stops trying.

I also have the same problem when trying to descale this unit. Same groaning of the pump but with no output.

Can someone please tell me which valve or switch actually controls the release of steam and hot water??

Thanks for any help.

The solenoid valve under the front panel is primarily responsible for hot water/steam.
Check whether it switches. Can you do in test mode.it like times the solenoid coils broken. If you have a multimeter also look whether 230V are present in hot water.
Otherwise also look or whether it is closed with lime.