Error code reference
Wega's electronic machines post numbered Err codes and a couple of text prompts when something trips. For each one below you get what it means, what usually causes it, what you can safely check yourself, and the point where it turns into a service call. The same controller family runs across Wega's current range, so a code reads the same on a Polaris as it does on an IO.
We'll get back to you today with what it likely is.
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About these codes. Compiled from Wega product documentation and our own GTA service records. Exact wording can shift slightly by model and firmware year, so we confirm each code against the machine in front of us. Updated July 2026
The boiler did not reach its setpoint inside the allowed heat-up window. You will usually meet this one first thing in the morning, on a cold start.
If the descale is current and the timeout comes back, the element or its switching device needs testing.
Steam pressure has gone past the safety threshold, or the sensor is reporting values that cannot be real. Either way the machine is flagging a pressure-safety problem.
This is safety-critical. Call before you power it back on. A vented safety valve will not reseal and has to be replaced.
Brew was commanded on a group but the controller saw no actuation or flow come back, so it locked the group out.
Coil testing and driver diagnosis is service-call work.
On Polaris EVD and MyConcept EVD with pressure monitoring, steady-state brew pressure has fallen outside its configured band. The machine is telling you extraction pressure is off, not that it has stopped.
OPV calibration and pump testing need a portafilter gauge and a technician.
A group's volumetric flow meter is not pulsing during the shot, or its count has gone out of range, so the controller cannot measure the dose.
The meter swap is a planned tech visit. Wega EVD meters interchange with Astoria EVD meters, which keeps parts easy to get.
The main controller has lost its link to a satellite board, such as the display, a group board, or an expansion board.
Reseating and testing the connectors is the first thing a tech tries, and it often clears without any parts.
On the IO Tron, the touchscreen controller is not registering input, or it failed its own self-test at boot.
Touchscreens are sensitive to power events. Depending on what we find, the fix is a hard reset, a firmware reflash, or a module swap.
The keypad is reading several dose buttons at once, or one input is stuck on, which the controller flags as a membrane fault.
The membrane and ribbon are replaced as a set. They are the same family as Astoria membranes and interchange in many cases.
Auto-fill ran past its safety window without the level probe ever reading full, so the controller stopped it before the pump could run dry.
Level probes scale at about the same rate as Astoria's, so we pull and clean them on every descale visit. A failed solenoid or a real leak is a service call.
The steam-boiler NTC probe is reading open or shorted, so the controller cuts steam-side heating to protect the element. Steam goes away, though the brew side may keep working.
The probe needs to be ohmed and replaced. It is the same probe family as Astoria, so parts cross-reference and rarely hold up the repair.
On Polaris EVD with per-group PID, and on MyConcept PID trims, each group runs its own NTC. This code locks out just the faulted group and leaves the others live, so you can keep pouring while it waits for service.
The probe gets tested at the controller and replaced, and the per-group PID offset is re-baselined with a Scace device afterward.
The eco-mode transition did not finish cleanly on a Concept Green Line machine. Operators often read it as a real fault when the machine is doing exactly what it was set up to do.
If it keeps returning across several days, the firmware needs a reflash. Otherwise it is informational and safe to clear.
A maintenance counter has hit its threshold, whether that is a shot count, water volume, or descale hours. It is a reminder, not an active fault.
Book the maintenance the counter is pointing at. Descaling and filter changes are exactly the work that heads off the critical codes above.
No codes match your filters.
Try a different search term, clear the filters, or call us and we'll diagnose from your display.
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FAQ
9 answers about resetting codes, recurring faults, firmware versions, and when DIY ends.
Updated July 2026
Every documented Wega fault we see is listed above, with its meaning, common causes, and what to try before calling a technician. If the code on your machine isn't on this page, call us with the exact display string and we'll work it out by phone.
Sometimes. Many Wega codes clear after a power cycle, a completed descale, or a counter reset through the service menu. Codes tied to a hardware fault (failed sensor, blown element, board issue) will return immediately and need a technician. Each code above lists what's safe to try first.
A code that returns after a power cycle is signalling a real fault, not a glitch. The underlying part (sensor, heating element, valve, motor, board) needs replacement. Repeat codes are diagnostic gold for us, so call with the exact code and any timing or symptom pattern you've noticed.
Wega updates fault tables across firmware revisions and model generations, and not every code is documented publicly. We see codes in the field that aren't in any published list. Call us with the exact display string and the model and we'll work it out from our service log.
Most calls in Toronto and the immediate GTA get same-day on-site response when scheduling allows. Tell us the code and the model when you book and we'll bring the right parts on the first visit so the repair finishes the same day in most cases.
No. We're an independent service provider, not affiliated with Wega, and we work on machines outside the manufacturer's authorized network routinely. That independence lets us service older or out-of-warranty machines authorized networks may decline, and quote transparently every time.
Depends on the machine, the code, and the cost. We give you honest math on this. If repairs are starting to exceed roughly 50% of a refurbished replacement and multiple major systems are throwing codes, we'll tell you it's time to look at replacing rather than running up the repair bill.
If your machine is under the manufacturer's warranty, independent service may affect coverage depending on Wega's specific terms. Try the manufacturer's authorized network first. If their response is slow or they decline coverage for your code, call us and we'll service it on standard terms.
13 codes are documented above, organized by the system they affect. The list is compiled from manufacturer service literature, technician forums, and our own service log. We update it as new codes appear or firmware adds new states.
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We diagnose Wega codes by phone routinely. Same-day on-site dispatch if it needs hands on the machine.
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