Smeg E6 fault codewhat it means and how to fix it
Power failure to the power board. Smeg publish a timed remedy rather than a flick of the switch: turn the appliance off for a full five minutes.
Take care
What happened after the five minute power down?
The right answer depends on what you can see. Pick the one that matches.
Choose the option on the left that matches what your appliance is doing, and the answer for that case appears here.
What happened after the five minute power down?
That is the outcome Smeg’s remedy is written to produce. The board lost its supply briefly, could not recover in place, and a full power down let it start clean.
Note the date and carry on using the cooker. Nothing needs booking for a single occurrence that stays away.
What happened after the five minute power down?
A remedy that works every time and lasts a few days is not fixing anything. The board is losing its supply repeatedly, which points at the internal power stage or a connector.
Book a service visit rather than continuing to reset. Smeg’s older article routes this code straight to their service centre, which fits this pattern.
What happened after the five minute power down?
If a genuine five minute power down makes no difference, the condition is present rather than latched, and the published remedy has been exhausted at the first attempt.
Leave the cooker off and book a service visit. Repeating the wait a third and fourth time will not produce a different answer.
What E6 means
Smeg publish E6 as a power failure to the power board, with the remedy to turn the appliance off for five minutes and the note that an engineer will be needed if it persists. Of everything in their induction table, this is the only code with a number attached to the remedy, and the number is the point. A great many appliance instructions say to switch off and on again. Very few specify how long to leave it, and when a manufacturer does, it is usually because a quick flick does not achieve what they are asking for. Turning a range cooker’s knobs to 0 and its function knob to off puts the appliance into standby while the boards stay powered. Even switching off at the wall leaves stored charge in the power supply for a while, and the control can come back up holding the same state it went down with.
Five minutes of genuinely removed supply lets those reservoirs drain, so the board starts from scratch rather than resuming. That is the difference between a reset and a pause, and it is why people report that switching off and on did nothing while a proper wait fixed it. There is something to watch for as it comes back, and Smeg publish it in the manual: on first connection to the mains an automatic check runs and switches on all the indicator lights for a few seconds. Seeing that after your five minutes tells you the board has powered up and run its own self-check, which is a more informative sight than an empty display. It helps to place this code among its neighbours, because Smeg publish three that sound similar and are not. E6 is a power failure to the board, meaning the supply the board itself needs. EA is a fault in the board’s own power circuitry. E5 is the incoming mains signal being unacceptable. Their wording distinguishes them and we are not going to read more into it than they wrote.
What matters for you is the pattern rather than the wording. A single E6 that clears after five minutes and does not return is exactly the outcome Smeg’s remedy is written for. An E6 that comes back within days is the board failing the same test repeatedly, and at that point the wait has stopped being a fix and become a way of postponing the diagnosis. Their older support article, which sends E/6 straight to the service centre with no self-help at all, is arguably describing that second case.
What causes it
| Cause | What is actually happening | How likely |
|---|---|---|
| A transient interruption to the board supply | The case the five minute remedy is written for. A brief loss or dip leaves the board in a state it cannot recover from without a full power down. | Common |
| A power cut or switching event in the house | Supply restored after an outage does not always come back cleanly, and an appliance that was live at the moment it returned can be left confused. | Common |
| An internal connector working loose | Years of heat cycling in a range cooker loosens plugs between the supply stage and the power board, which reads as power not arriving. | Occasional |
| A failing internal power supply stage | Where a repeating E6 usually lands. The board is genuinely not receiving what it needs and no amount of waiting will change that. | Occasional |
| A fault upstream in the cooker circuit | A deteriorating connection or a marginal isolator can interrupt supply briefly and repeatedly without ever tripping anything. | Rare |
What to try yourself
Switch the cooker off at the wall switch or its isolator rather than at the knobs, so the boards actually lose power.
Leave it off for a full five minutes by the clock. Smeg specify the duration, and a quick flick does not do the same job.
Switch it back on and watch the panel. Smeg publish that all the indicator lights come on for a few seconds as the automatic check runs.
Use the cooker normally and write down the date. Whether this returns, and how quickly, is the information that decides what happens next.
If it comes back within days, stop repeating the five minute wait and book a service visit instead.
When you book, say that the published five minute power down clears it temporarily. That tells the engineer it is recurring rather than a one-off.
Do not take the back or the top off to look for a loose connector. Induction power boards are mains powered, they hold charge after the supply is removed, and there is nothing accessible that an owner can safely reseat.
Get a qualified appliance engineer to look at your Smeg E6
We do not pass enquiries to a repair firm, so there is no form here. When you book a qualified appliance engineer, tell them the make, the model and the exact code or message on the display, and ask whether they carry parts for this make — that is what turns one visit into a repair rather than a quote.
What it costs to fix
Typical repair cost
£0–£320
Time on site
15 minutes
Nothing if the published five minute power down clears it for good, which is the expected outcome. A service visit and a power board if it recurs, which is among the more expensive parts in an induction range cooker.
Typical UK prices including parts and labour, updated September 2026. Your quote may differ.
Own this appliance and had this code? . Nothing is published until a person has read it.
Related Smeg fault codes
- EAGet it checkedA power circuit board error on the induction hob. Rangemaster publish an EA too, describing something different, so check which brand’s table you are reading.Related: power board and electronics
- E9Get it checkedSmeg name the part outright: the inductor temperature sensor is defective. It is the sensor that makes the hob’s own over-temperature protection possible.Related: power board and electronics
- SHOUsually simple to fixNot a fault at all. The oven is in showroom mode, so the control panel works and no heating is possible. Smeg publish how to switch it off.Related: same brand
- U400Get it checkedSmeg publish six words for this: wrong connection, connect the equipment properly. On a hardwired range cooker that means an electrician rather than anything you can do.Related: same brand
- E2Get it checkedOverheating of the inductor on the hob, but E2 is also in Smeg’s pyrolytic oven list. Which display it is on changes the answer completely.Related: same brand
- Er03Usually simple to fixA knob or button is being read as held on. On these knob-operated range cookers that usually means a knob kept turned to A too long. Release it, then clean the hob as Smeg say.Related: same brand
Own a Smeg range cooker? Save it and its codes come first next time.
Related guides
Common questions about Smeg E6
Why five minutes rather than just off and on?
Because Smeg wrote a number, and manufacturers only do that when a quick flick is not enough. Switching off at the controls leaves the boards powered, and even switching off at the wall leaves stored charge in the power supply for a while, so the control can come back holding the state it went down with. A timed power down lets that drain and forces a genuine cold start.
How do I know the reset actually worked?
Watch the panel as you switch back on. Smeg publish that on first connection to the mains an automatic check is carried out which switches all the indicator lights on for a few seconds. Seeing that means the board has powered up and run its own check, which is a much better sign than a display that simply looks normal.
It keeps coming back. Is it safe to keep resetting it?
It is not dangerous, but it is not getting you anywhere either. A code that returns every few days after a remedy that works every time is a board losing its supply repeatedly, and each cycle is postponing the diagnosis rather than performing one. Smeg’s older support article sends this code straight to their service centre with no self-help at all.
Is this the same as EA or E5?
No, and Smeg keep them separate deliberately. E6 is a power failure to the power board. EA is a power circuit board error, which is a fault in the board’s own circuitry. E5 is the incoming mains signal being invalid. We are not going to speculate further about how their engineers distinguish the three, but they clearly do, so quote the exact code you saw when you call.
Technical review
Not reviewed by an engineer
No engineer has read this page. Severity follows what the manufacturer publishes, and we would rather tell you that than let a byline imply a sign-off.
Sources and how we verified this
We establish the facts from the sources below and then write the explanation ourselves. We do not copy manufacturer wording and we do not host their manuals.
- Manufacturer support portal
- Manufacturer technical and service documentation
This page has not been reviewed by an engineer, and we would rather tell you that than imply otherwise. The severity rating follows what the manufacturer publishes: where they say isolate the appliance and call someone, so do we.