Applies to: automatic machines (E6, E8, ENA, S8, J8, Z10, GIGA).
How to fix Error 3
- Warm the machine to room temperature and restart.
- Descale if it is due, following Jura's manual. A technician source says heavy scale can slow heating enough to trip the check.
- If it returns, a qualified technician would inspect the steam thermoblock sensor and its cable and replace the sensor if needed. Do not open the machine yourself.
When to stop and call a repairer
Security screws and mains voltage inside; hand it over if that is not you.
What it costs
| Parts | Part prices are not published by the manufacturer. Ask a parts supplier or service centre for a current price. |
|---|---|
| Service | Service prices are not published by the manufacturer. Ask an authorised service centre, and an independent espresso repairer, for a quote. |
| Worth repairing? | Get a quote first. |
Beyond the fix
Tips and tricks
- Unplug for a few minutes and reconnect before assuming a failure. A UK dealer uses this as the first test for every thermoblock code.repair guide
- Run descaling when the machine asks for it. A parts seller lists a scaled steam thermoblock as one cause, alongside the sensor, the thermal fuse and the power board.repair guide
- If a technician opens it, they check the sensor cable for breaks and the contact pins for corrosion. That is bench work with the machine unplugged, not for owners.repair guide
Common mistakes
- Skipping the unplug-and-restart test. The UK dealer says it separates a hard fault from a glitch.
- Fitting a new sensor on its own. A failed sensor may have overheated the fuse cords first, per the dealer.
Easily confused with
- Error 4 is the same circuit reading too hot rather than too low, per the German service table. Error 1 is the coffee-side equivalent.
Further reading
Questions
What does Error 3 mean on the Jura?
Steam thermoblock temperature too low or its NTC sensor failed. The steam side of the machine is not reporting temperature. Jura's manuals do not define this code; third-party technician tables name the same suspects as Error 1 but on the steam thermoblock: the sensor, its cable, or a machine that is too cold.
Can I fix Error 3 myself?
DIY difficulty: hard. Warm the machine to room temperature and restart. Descale if it is due, following Jura's manual. A technician source says heavy scale can slow heating enough to trip the check.
How much does it cost to fix Error 3?
Part prices are not published by the manufacturer. Ask a parts supplier or service centre for a current price. Service prices are not published by the manufacturer. Ask an authorised service centre, and an independent espresso repairer, for a quote.
Is it worth repairing?
Get a quote first.
Error 3 during startup or during use?
Juras report Error 3 any. That timing is a useful clue when narrowing the cause.
Can I keep using the machine with Error 3 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 Error 3 clear on its own?
Rarely. A reset or power cycle is worth one try, but Error 3 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.