Can I fix this myself?

Yes. This is a user-serviceable condition and the steps above are the ones the manufacturer publishes. If it returns straight after you complete them, stop and book service.

Where do these steps come from?

They are transcribed from the Oracle Instruction Book BES980, ALERTS p.24; Troubleshooting p.37. We do not repair machines and we do not publish a fix we cannot cite to the manufacturer.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.

Breville FILL TANK: Fill Tank — Causes and Fixes

You can fix thisUpdated August 3, 2026

Breville · Oracle BES980

FILL TANK — Fill Tank

You can fix this

What the machine is reporting

The machine will detect a low water level. The LCD will display 'FILL TANK'.

Likely causes, most likely first

Water tank empty or low
Water tank not fully inserted and locked

What to do

1. Fill tank with cold fresh water. The machine will not be able to make coffee or hot water while the tank is empty.
2. If FILL TANK shows on the LCD but the water tank is full, push the water tank in fully and lock the latch closed.

Source: the Oracle Instruction Book BES980, ALERTS p.24; Troubleshooting p.37. Transcribed from Breville's own published documentation — we do not repair machines and do not publish fixes we cannot cite.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

Other Breville codes

FLUSH — FLUSH alert
DESCALE — DESCALE alert
CLEAN ME! — Clean Me!
CHANGE FILTER — Change Filter
CLEAN / DESCALE light — CLEAN / DESCALE light — flashing vs solid
ERR — ERR error message on LCD

All Breville error codes →

Frequently asked

What does Breville FILL TANK mean?: The machine will detect a low water level. The LCD will display 'FILL TANK'.
Can I fix this myself?: Yes. This is a user-serviceable condition and the steps above are the ones the manufacturer publishes. If it returns straight after you complete them, stop and book service.
Where do these steps come from?: They are transcribed from the Oracle Instruction Book BES980, ALERTS p.24; Troubleshooting p.37. 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.