Can I fix this myself?

Yes, this is routine maintenance rather than a repair. Follow the steps above using the consumable the manufacturer specifies, and if the message returns immediately after a correctly completed cycle, treat it as a service call.

Where do these steps come from?

They are transcribed from J8 (NAA) Instructions for Use, ch. 9 'Troubleshooting', p.32. We do not repair machines and we do not publish a fix we cannot cite to the manufacturer.

Will this code clear on its own?

Maintenance prompts clear when the cycle they are asking for is completed in full — stopping partway usually leaves the counter running. Fault codes clear when the underlying condition is corrected, not by power-cycling past them.

JURA Fill water tank (not displayed although the water tank is empty): Water-empty message never appears — Causes and Fixes

Routine maintenanceUpdated August 3, 2026

JURA · ENA 8, S8, J8, Z10

Fill water tank (not displayed although the water tank is empty) — Water-empty message never appears

Routine maintenance

What the machine is reporting

There is a lot of limescale in the water tank.

Likely causes, most likely first

There is a lot of limescale in the water tank

What to do

1. Descale the water tank (see Chapter 'Maintenance – Descaling the water tank').

Source: J8 (NAA) Instructions for Use, ch. 9 'Troubleshooting', p.32. Transcribed from JURA's own published documentation — we do not repair machines and do not publish fixes we cannot cite.

When to stop and call a technician

The machine trips a breaker, smells of burning, or shows scorched wiring.
Water is leaking from inside the chassis rather than from the tank, tray or portafilter.
The fault involves the boiler, a pressure valve, the heating element or the pump itself.
The code returns immediately after a correctly completed reset or maintenance cycle.
The machine is under warranty — opening it yourself usually ends that cover.

Never bypass, disable or remove a safety device — a thermal fuse, pressure relief valve or lid interlock is the part standing between a fault and a fire. Do not open a pressurised boiler or work on mains wiring.

Machines this applies to

What the fix needs

Descaler
Descaling removes the mineral scale this fault is caused by. Use a product made for espresso machines.
Find on Amazon

As an Amazon Associate we earn from qualifying purchases. These are category searches, not product endorsements — always use the consumable your machine's own manual specifies.

Other JURA codes

Clean — Cleaning programme due
Descale — Descaling programme due
Change the filter — Water filter exhausted
Clean the milk system — Milk system cleaning due
Rinse the milk system — Milk system rinse requested
Fill water tank (displayed although the water tank is full) — False water-empty message

All JURA error codes →

Frequently asked

What does JURA Fill water tank (not displayed although the water tank is empty) mean?: There is a lot of limescale in the water tank.
Can I fix this myself?: Yes, this is routine maintenance rather than a repair. Follow the steps above using the consumable the manufacturer specifies, and if the message returns immediately after a correctly completed cycle, treat it as a service call.
Where do these steps come from?: They are transcribed from J8 (NAA) Instructions for Use, ch. 9 'Troubleshooting', p.32. We do not repair machines and we do not publish a fix we cannot cite to the manufacturer.
Will this code clear on its own?: Maintenance prompts clear when the cycle they are asking for is completed in full — stopping partway usually leaves the counter running. Fault codes clear when the underlying condition is corrected, not by power-cycling past them.