First, I'm not JURA technician. But I have worked on similar table top "Super Automatics" You should call your vendor or the MFR for service. Especially if it's still under warranty. There are no customer serviceable parts in this machine.
*** the following is for information only ***
- Water not getting to machine or not sensing that the water tank is already filled.
* There usually some type of float near to middle of the water tank. It's usually white or colored plastic. This 'float' needs to move freely up-down to 'sense' the filled tank. clean the tank and shake it -note the movement of this float. It will need further cleaning if it's stuck (or you will have to replace tank if it's crudded up).
* Re-install tank and fill with filtered water. Turn machine off, count to 15 then turn on again. This usually turns on pump to add water to inner tank. If this does not happen then there is a CPU problem. If it does hums for 5-10 seconds then goes off but no heating then the pump may have an air bubble in line. Try the turn off and on method several times (up to 5) to get the water flowing. If it's still not working then there is a clog in the pump and will need service and/or replacement.
* Since this is a table top machine in which you fill the water tank. Try to use filtered (bottled ok) water. Do Not use Distilled or 100% pure water as this type of water will eat out the metals from your machine! Some places use a water softener as it tends to be better for the machine long term (years).
* Still got problems? Check with vendor or MFR for service or replacement. Most machines of this type do not have serviceable parts or adjustments.
PS: I've noted this tank also uses a water filter (which is probably dry after sitting around for a year as you mentioned.) you will probably have to flush out the air in the filter prior to this unit's pump to work properly. I found a youtube vid that may help:
I had this problem and fixed it. At the bottom of the bean container is a tab that extends about a quarter of the way around. This tab is designed to fit into the base inside a quarter-circle groove that rotates back and forth slightly when the bean container is installed or removed. In my case, the groove on the base was not aligned correctly, so I inserted a blade screwdriver into the groove and rotated it gently in a counter-clockwise direction until it stopped. After this, I could install the bean container as expected.
Hi, if you havn't already solved this one, it has been caused by pulling the drip tray/ dump box out while the brew unit was still active. Switch off the machine and insert the drip tray without the dump box. Turn the machine back on and the brew unit should re align itself.