Breville / Sage Dual Boiler error codes
13 codes. The Dual Boiler has dual stainless boilers plus heated group head; most codes are one of its temperature sensors, a water-level or flow fault, or the grinder.
The Dual Boiler uses two-digit codes 00 to 12 that technicians read from a hidden menu rather than the normal display. Technician videos also describe a no-steam fault that gives three beeps and no code on screen, so not every fault shows a number here.
How to read the stored 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.
Service menus are intended for technicians. Reading the log is harmless; do not change calibration values.
All codes
| Code | Meaning | Fault | DIY |
|---|---|---|---|
00 | Steam boiler temperature sensor not detected | Temperature sensor open circuit (not detected) | hard |
01 | Steam boiler temperature sensor short circuit | Temperature sensor short circuit | hard |
02 | Coffee boiler temperature sensor not detected | Temperature sensor open circuit (not detected) | hard |
03 | Coffee boiler temperature sensor short circuit | Temperature sensor short circuit | hard |
04 | Group head heater temperature sensor not detected | Temperature sensor open circuit (not detected) | hard |
05 | Group head heater temperature sensor short circuit | Temperature sensor short circuit | hard |
06 | Steam boiler pump issue during startup | Boiler water level or pump fault | hard |
07 | Steam boiler water level or pump fault | Boiler water level or pump fault | hard |
08 | Coffee boiler pump or flow issue | Boiler water level or pump fault | hard |
09 | Coffee boiler water level fault | Boiler water level or pump fault | hard |
10 | Coffee boiler overheating detected | Overheated above target temperature | hard |
11 | Steam boiler overheating detected | Overheated above target temperature | hard |
12 | Group head overheating detected | Overheated above target temperature | hard |