
β οΈ Breville Dual Boiler or Oracle going over temperature
Disconnect the machine from the wall immediately. If a Breville Dual Boiler or Oracle is overheating, turning steam or hot water on by itself, or acting strangely, leaving it powered can turn a repairable fault into a very expensive one.
This commonly affects the BES900, BES920, BES980 and BES990. Steam boiler leaks β often from worn O-rings or ageing steam probes β can allow steam to reach the Triac assembly above the boiler.
π₯ Why it overheats
The Triac assembly controls power to the heating elements. When a Triac fails, it can allow power through even when the machine should be off. The boiler or group head can keep heating until a thermal fuse blows or a boiler is damaged.
β‘ Oracle activating by itself
Steam leaking onto the signal relay can make the machine behave as though buttons are being pressed, such as activating the steam wand or hot-water tap. This is still a warning that there is a steam leak inside the machine.
π§ If you are experienced and the machine is safely disconnected, a broader leak repair may be worthwhile. View the Breville Dual Boiler Ultimate Service Kit. Otherwise, contact Matt for repair advice.
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