Getting error message "fit jets in central spout"

There is a fault with the automatic spout adjustment.

Confirm the message with OK.

The automatic spout adjustment will be deactivated during drink preparation whilst the machine remains switched on.
You can still make drinks.

Try this place Marisa. for a standard jetted bathtub with a normal faucet pair, go to Home Depot.

https://www.google.com/search?q=vita+spa+tub+parts+manual

Vita Bath Jets - Whirlpool Tub Parts

https://www.whirlpooltubparts.net > Vita Bath
Vita Bath Jets ; Aquatic 20284-WH Directional Jet · $9.99 ; Vita Bath Aqua Fall Tub Spout · $59.96 ; Vita Bath Monster Jet Body · $19.95 ; VITA BATH Monster Caged Jet ...

If by "hole at the bottom" you're talking about the spout that fills the tub, and you must pull up on a knob on the top of the spout, then its an easy and inexpensive fix. The knob is the diverter and the seal is worn out. Replace with a new one you can buy at any hardware store. I suggest you remove the old one and take it with you as there are two pipe sizes. A strap wrench or large pair of channel lock pliers will do the job easily. Just grab the entire spout and twist counterclockwise, OR if there is a small hole on the underside of the spout, then a 1/8 or 3/16 Allen wrench will loosten the set screw that holds the spout on, then just wiggle as you pull on the spout to remove

You might need to reset the coffee maker by turning it off and then turn it on again.

sounds lie you have push in quick connect fittings
if so the the push in hose is the wrong size
otherwise change the fittings to proper olive connections

I found this solution in an old posting, credit to Brian Hammet:

Pull the stainless steel dispenser cover straight down as far as it will go. now push it firmly up as far as it will go. if the error message still appears, repeat, but push up faster and harder. there is a switch monitoring the position of the central jets to make sure they are installed. you have to push up hard enough to close that switch. sometimes you have to slam it pretty good, but dont go crazy on it. just give it a firm touch.

Check the heating coils for proper resistance or no resistance. If the machine is sending a signal to check the coils before turning them on AND it is not getting any resistance then it cannot continue. However if you have the machine plugged in near the microwave oven, then a power surge may have blown the control board or caused it to lose its progamming. The control board is expensive!
http://www.appliancefactoryparts.com/smallappliances/delonghi/esam5500-b-perfecta.html

It says fit jets in central spout, not fix. The stainless steel cover over where the coffee comes out sits on top of the central jets. pull the dispenser down as far as it will go. Now pull it straight out to you. reach up and grab the black plastic piece that holds the central jets. pull it straight down. Now fit the central jet housing into the stainless steel cover. put the cover back on and push it firmly up into place. if it still says fit central jets, pull the stainless steel cover down and slam it up a little harder. there is a switch up inside that needs to feel the presence of the central jets so it doesnt spray coffee and milk everywhere. You should be cleaning those jets every 24 hours anyway. Get the manual out and go through the maintenance proceedures. that milk will start to turn into green cheese if you dont clean the jets and pipework every night.

pull the stainless steel dispenser cover straight down as far as it will go. now push it firmly up as far as it will go. if the error message still appears, repeat, but push up faster and harder. there is a switch monitoring the position of the central jets to make sure they are installed. you have to push up hard enough to close that switch. sometimes you have to slam it pretty good, but dont go crazy on it. just give it a firm touch.

Put some cooking oil around the o-rings to sofen them up so they would seat around all fitting surfaces. Hope this helps.