Breville Dual Boiler 10 error code

Applies to: Dual Boiler.

Short answerThe coffee boiler and pump got hotter than the controller asked for. Technician sources describe two possible causes: the heater kept running when it was told to stop (a triac on the power board latched on), or the sensor under-reads because of a leak or steam at the probe seal. The machine cuts power to protect itself, and a technician source says repeated overheating can open a thermal fuse.

Part at faultcoffee boiler and pump

Severityhigh

DIY difficultyhard

When it appearsany time

How to fix 10

Switch off at the wall immediately and let the machine cool for at least 60 minutes.
Switch back on and watch the heat-up. If it reaches temperature normally and the code does not return, treat it as a one-off and descale as the manual describes.
If it returns, a technician would check the boiler fittings and sensor probe for leaks and replace perished o-rings.
If the machine overheats again or steam pours from the group head at idle, a technician source says the triac board may be latched on. That is a board replacement, not a cleaning job.
If the machine will not heat at all after an overheat, a technician source says a protective thermal fuse may have opened. Replacing it needs the machine opened up, so it is technician work.

The same steps as the list above, cheapest first. Stop as soon as the code clears.

When to stop and call a repairer

Do not keep running a machine that repeats an overheat code. Latched heaters can boil dry and damage the boiler and wiring.

What it costs

Parts	Not published by Breville. Ask an authorised service centre for a quote.
Service	Not published by Breville. Ask an authorised service centre for a quote.
Worth repairing?	Depends on the cause and on prices Breville does not publish. Get a quote and compare it with a refurbished unit on an older machine.

How to check the error log

Switch the machine off at the wall. Hold EXIT and MANUAL while switching the power back on to enter the self-check menu. Technician videos say it shows boiler level status (such as LLL for low and HHH for high) and temperatures in the order coffee boiler, steam boiler, group head. The same videos say the stored error codes (00 to 12, with a count for each) sit in a separate engineer menu, opened by holding 1 CUP and 2 CUP and pressing the power button. Breville does not document either menu, so treat these steps as unconfirmed.

Clear the log after a repair so you can tell whether the fault has really gone.

Beyond the fix

Did you knowA repair video found steam escaping past the o-rings of the steam boiler probes, wetting the lid and condensation inside the machine. Leaks like this are described as a root cause of overheating faults.

Tips and tricks

If the top of the machine feels hot a long time after switching off, unplug it and call a technician; this is described as a sign the heater stays powered.technician video
Use the self-check menu temperature screens to see whether the coffee boiler really reads high.technician video
Switch off and unplug at the first sign of temperature creeping above the set value; waiting risks a blown thermal fuse.technician video
Water inside the case or white deposits on the lid underside suggest a steam leak that a technician should treat.technician video

Common mistakes

Carrying on using a machine whose lid is searing hot because it still makes coffee.
Treating it as a sensor fault without checking the control board for water damage.

Easily confused with

A coffee boiler that reads too high but with a stuck-on heater is a triac board symptom; a real sensor fault usually gives a wrong or missing reading instead.

Questions

What does 10 mean on the Breville / Sage Dual Boiler?

Coffee boiler overheating detected. The coffee boiler and pump got hotter than the controller asked for. Technician sources describe two possible causes: the heater kept running when it was told to stop (a triac on the power board latched on), or the sensor under-reads because of a leak or steam at the probe seal. The machine cuts power to protect itself, and a technician source says repeated overheating can open a thermal fuse.

Can I fix 10 myself?

DIY difficulty: hard. Switch off at the wall immediately and let the machine cool for at least 60 minutes. Switch back on and watch the heat-up. If it reaches temperature normally and the code does not return, treat it as a one-off and descale as the manual describes.

How much does it cost to fix 10?

Not published by Breville. Ask an authorised service centre for a quote. Not published by Breville. Ask an authorised service centre for a quote.

Is it worth repairing?

Depends on the cause and on prices Breville does not publish. Get a quote and compare it with a refurbished unit on an older machine.

When does 10 typically show up?

Breville / Sage Dual Boilers report 10 any time. There is no reliable pattern to when it appears — treat any occurrence as real.

Can I keep using the machine with 10 showing?

Treat it as a stop-using signal: 10 marks a fault that can damage the machine (or worse) if you keep running it. Do the safe first steps below, then stop.

Will 10 clear on its own?

Rarely. A reset or power cycle is worth one try, but 10 with a "hard" difficulty rating almost always means a failed component that has to be replaced.

How long does the repair take?

This one is a bench repair for most owners — the teardown, test and reassembly are the bulk of the work, not the part itself.

How reliable is this page?Breville and Sage do not publish a table of error codes for these machines in the documents we found. The meanings on this page come from third-party repair references and owner reports, so treat them as lower confidence. If your machine shows a text alert, follow the on-screen text first. Model revisions can differ: if your machine behaves differently, tell us. See our editorial policy.

Breville / Sage Dual Boiler 10: overheated above target temperature