Can I fix this myself?

No. This fault sits on the technician side of the line — do the user-serviceable checks on this page and no more. Anything involving the boiler, a pressure valve, the heating element or internal wiring needs a qualified technician.

Where do these steps come from?

They are transcribed from the Barista Pro Instruction Book BES878, Troubleshooting p.26. We do not repair machines and we do not publish a fix we cannot cite to the manufacturer.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 Machine is on but ceases to operate: Machine on but ceases to operate — Causes and Fixes

Call a technicianUpdated August 3, 2026

Breville · Barista Pro BES878

Machine is on but ceases to operate — Machine on but ceases to operate

Call a technician

What the machine is reporting

The safety thermal-cut out may have activated due to the pump or grinder overheating.

Likely causes, most likely first

Safety thermal cut-out activated because the pump or grinder overheated

What to do

1. Press the POWER button to switch the machine off and unplug from the power outlet.
2. Allow to cool for about 30-60 minutes.
3. If the problem persists, call Breville Support. Never bypass or defeat a thermal cut-out to restore operation.

Source: the Barista Pro Instruction Book BES878, Troubleshooting p.26. Transcribed from Breville's own published documentation — we do not repair machines and do not publish fixes we cannot cite.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

This fault is on the technician side of that line. Do the user-serviceable checks above and no more.

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 Machine is on but ceases to operate mean?: The safety thermal-cut out may have activated due to the pump or grinder overheating.
Can I fix this myself?: No. This fault sits on the technician side of the line — do the user-serviceable checks on this page and no more. Anything involving the boiler, a pressure valve, the heating element or internal wiring needs a qualified technician.
Where do these steps come from?: They are transcribed from the Barista Pro Instruction Book BES878, Troubleshooting p.26. 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.