The Breville / Sage Barista Touch Impress shows this code with identical meaning and fix as the Barista Touch. Full guide for ER03.
Applies to: Barista Touch Impress.
How to fix ER03
- Switch off at the wall and unplug. Leave the machine for an hour so any moisture dries, then try again. A short that clears after drying suggests a leak to find.
- Inspecting the ThermoJet (ferro) heater temperature sensor (NTC) plug and the wiring near the boiler means opening the machine, which is technician work. A technician would look for a wet patch, white scale trails or a perished o-ring around the probe.
- A technician would replace any leaking o-rings at the boiler fittings and sensor probes; the leak, not the sensor, may be the true fault.
- If the code persists after everything is dry, the ThermoJet (ferro) heater temperature sensor (NTC) needs replacing by a technician.
- Afterwards, clear the error log and run a full heat-up and a shot to confirm.
When to stop and call a repairer
If you see scorch marks, smell burning, or the machine trips your GFCI / RCD, stop: that is an electrical fault, not just a sensor.
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? | Often yes, but Breville does not publish repair costs. If a leak has soaked the control board, get a quote before spending anything. |
How to check the error log
Unplug the machine. Press and hold the Power button while plugging it back in. When the password screen appears, enter 02015 to open Service Mode, then open the error log.
Clear the log after a repair so you can tell whether the fault has really gone.
Beyond the fix
Tips and tricks
- Do not open the machine yourself. The manual says to leave anything beyond cleaning to Breville support or an authorized servicer, because these parts sit next to mains wiring.manufacturer manual
Further reading
Questions
What does ER03 mean on the Breville / Sage Barista Touch Impress?
Ferro heater temperature sensor short circuit detected at startup. The ThermoJet (ferro) heater temperature sensor (NTC) is reading as a short circuit: the board sees near-zero resistance, which a healthy sensor does not produce. Technician sources name water bridging the sensor contacts (a leak or steam at the probe seal) and a failed sensor as the likely causes. Because it failed at startup, a wet connector or a sensor that has already failed is plausible. Breville does not publish this code table, so the meaning comes from third-party service tables.
Can I fix ER03 myself?
DIY difficulty: hard. Switch off at the wall and unplug. Leave the machine for an hour so any moisture dries, then try again. A short that clears after drying suggests a leak to find. Inspecting the ThermoJet (ferro) heater temperature sensor (NTC) plug and the wiring near the boiler means opening the machine, which is technician work. A technician would look for a wet patch, white scale trails or a perished o-ring around the probe.
How much does it cost to fix ER03?
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?
Often yes, but Breville does not publish repair costs. If a leak has soaked the control board, get a quote before spending anything.
ER03 during startup or during use?
Breville / Sage Barista Touch Impresss report ER03 during the power-on self-test. That timing is a useful clue when narrowing the cause.
Can I keep using the machine with ER03 showing?
Usually you can finish the drink you are making, but do not ignore it — the underlying fault rarely heals itself. Work through the cheap checks first.
Will ER03 clear on its own?
Rarely. A reset or power cycle is worth one try, but ER03 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.