Breville / Sage Oracle Touch ER26: overheated above target temperature
ER26 means: Steam boiler overheated above target temperature.
How to fix ER26
- 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 caused by low water or a blocked flow and descale.
- On the steam boiler, check the probe insertion port on top of the boiler for steam venting or white scale trails. A leaking probe seal lets steam heat the sensor cable and produces false overheat readings; replace the probe o-rings.
- If the machine overheats again or steam pours from the group head at idle, the triac board is latched on. This is a board replacement, not a cleaning job.
- If the machine now will not heat at all after an overheat, the thermal fuse has done its job and blown. It is a cheap part but sits on the boiler and needs the machine opened up.
Look for scale trails or hissing at the probe insertion port with the top cover off. Replace the probe o-rings (kits about $85 with new probes) and clean the probes.
If the boiler overheats again with good seals, the thermal fuse will open and the machine will stop heating steam. Fuse plus triac board is a technician-level job on a machine that is still worth it; otherwise price a refurbished unit.
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: Thermal fuse $10 to $20; triac board $80 to $150; steam boiler probe and o-ring kit about $85.
Service: Out-of-warranty Breville service quotes for internal faults are commonly $300 to $500, sometimes more, plus shipping. Independent espresso repair shops are usually cheaper for a sensor swap.
Worth repairing? Depends on the cause. Probe o-rings: yes, always. Triac board plus thermal fuse on a machine over five years old: get the part price first and compare with a refurbished unit.
How to check the error log
Switch the machine off at the wall. Hold the front Power button, switch the wall power back on and release when the logo appears. Enter the service password 00000, then open Error Counter (stored faults) or Live Debug (live temperatures and water levels).
Clear the log after a repair so you can tell whether the fault has really gone.
Related codes on the same part
- ER18 — Steam boiler temperature not rising as expected
- ER20 — Steam boiler water level or pump issue detected
Same fault on other Breville / Sage machines
FAQ
What does ER26 mean on the Breville / Sage Oracle Touch?
Steam boiler overheated above target temperature. The steam boiler and its pump got hotter than the controller asked for. That means either the heater kept running when it was told to stop (a triac on the power board latched on) or the sensor is under-reading because of a leak or steam at the probe seal. Breville machines cut power to protect themselves, and repeated overheating blows the thermal fuse. ER26 is the steam boiler overheating above its target. The classic Oracle Touch cause is a leaking steam probe seal on top of the boiler: steam vents past the o-ring, heats the sensor cable, and the controller sees a runaway temperature. The dangerous cause is a triac on the power board latching the heater on.
Can I fix ER26 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 caused by low water or a blocked flow and descale.
How much does it cost to fix ER26?
Thermal fuse $10 to $20; triac board $80 to $150; steam boiler probe and o-ring kit about $85. Out-of-warranty Breville service quotes for internal faults are commonly $300 to $500, sometimes more, plus shipping. Independent espresso repair shops are usually cheaper for a sensor swap.
Is it worth repairing?
Depends on the cause. Probe o-rings: yes, always. Triac board plus thermal fuse on a machine over five years old: get the part price first and compare with a refurbished unit.
Code meanings are compiled from manufacturer service references and repair documentation for the BES990; fixes follow documented repairs and owner reports. Model revisions can differ. If your appliance is under warranty, contact the manufacturer before opening it.