What should I do if the machine stops operating while it is on?
The safety thermal cut-out may have activated due to the pump or grinder overheating. Press the POWER button to switch the machine off, unplug it from the power outlet, and allow it to cool for about 30–60 minutes before restarting. If the problem persists, call Breville Consumer Support. (Page 32)
From the official Breville Breville Bes870xl A Barista Express Machine User manual, page 32
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