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Quick answer: Smeg induction cooktops show E-codes and ER-codes. E2 means a cooking zone overheated, usually an empty pan; E3 means no suitable pan or the pan is too hot; E5 is an invalid mains voltage; ER03 means a key is being pressed continuously by liquid or a pan on the controls; ER21 and ER22 are overheated electronics or a control panel fault; and ER47 is a communication fault between the controls and the induction module. Dry the glass and let the zone cool; a code that returns after a minute off at the isolator needs the module.
Not sure which one fits? Match your model number or check the sticker inside the door.
Every brand’s error codes in one index · Find your exact part
Last updated September 2026
A Smeg induction cooktop uses the same generation of induction electronics as several other European brands, so its codes fall into two families. E-codes describe what is happening at a cooking zone: too hot, no pan, wrong voltage. ER-codes describe the electronics: a key held down, a module too hot, two boards not talking. Once you know the split, most codes turn out to be a wet panel or an empty pan rather than a fault.
This guide covers the codes shown on Smeg’s SI, SIM, SIA and SIH series induction cooktops and the induction hobs fitted to Smeg freestanding cookers sold in Australia. For each code you get what it means, the likely cause and what to do. Nothing here involves opening the cooktop: the parts behind the persistent codes are the induction module and the touch control, and both are service replacements.
Smeg induction cooktop error codes: quick-reference table
Codes are listed as they appear on the display. Symbols on their own (a pan outline, a padlock, an H) are status messages. Always confirm against your model’s manual before ordering a part.
| Code | What it means | Most likely cause | What to do / the part |
|---|---|---|---|
| E2 | Excessive temperature of the inductor: a cooking zone has overheated | Empty pan left heating, oil overheating, warped pan base, ventilation under the cooktop blocked | Remove the pan and let the zone cool; check the ventilation gap; a repeat with a good pan at a normal setting points at the zone sensor |
| E3 | No suitable pan on the zone, or the pan is too hot for the zone to control | Pan not magnetic or too small, pan boiled dry | Use a magnetic pan sized to the zone; let it cool |
| E5 | Invalid mains voltage signal | Supply voltage out of range, loose connection at the terminals | Switch off at the isolator for one minute; if it repeats have the supply checked by an electrician |
| E6 | Power failure to the power board | Lost phase or poor connection, power board fault | Check the isolator; a repeat with good supply is the induction module |
| ER03 | A key is in continuous operation | Liquid, condensation or cookware on the control area | Clean and dry the glass over the controls; the cooktop resumes when the key releases |
| ER20 | Software or module fault | Control module | Switch off at the isolator for a minute; service if it returns |
| ER21 | Electronics overheated | Cooling fan blocked, hot air trapped under the cooktop, oven below running hot | Let it cool; clear the ventilation gap and check the cooling fan |
| ER22 | Control panel fault: keys not reading correctly | Panel wet, dirty or failed | Dry and clean the panel; switch off at the isolator; replace the touch control if it repeats |
| ER31 | Module configuration fault | Module not matched to the cooktop after a repair | Service: the module needs programming |
| ER36 | Temperature sensor fault on a coil | Sensor under a cooking zone open or short | Service: the coil sensor is replaced |
| ER47 | Communication error between the controls and the induction module | Loose ribbon cable, moisture, module failure | Switch off at the isolator for a minute; if it returns the connection or module needs service |
| Pan symbol flashing | No pan detected | Non-magnetic, too small or off-centre pan | Use a pan a magnet sticks to, centred on the zone |
| Padlock / key symbol | Child lock active | Switched on while wiping | Hold the lock key for a few seconds |
| H | Residual heat | Zone still hot | Not a fault; wait |
The codes that are really messages
ER03, E3 and the flashing pan symbol are the three things Smeg induction owners see most, and none is a fault. ER03 means a key is being held down: wipe the panel dry and move the pan off the controls. E3 and the pan symbol mean the zone cannot find a pan it can drive: the base is not magnetic, the pan is smaller than the zone ring, or it is sitting off-centre. A fridge magnet on the base is the test.
E2 and ER21: two kinds of heat
E2 is the cooking zone itself too hot, and the cause is nearly always the pan: boiled dry, oil left heating, or a base so warped it heats in the middle only. Let it cool and it clears. ER21 is the electronics under the glass too hot, and that is about ventilation: the cooling fan is blocked, the gap at the back of the cutout is closed, or an oven directly below is pushing heat up. Fix the airflow and ER21 stops.
ER22 and ER47: when it is the electronics
ER22 is the touch control failing to read its keys correctly, and ER47 is the control panel and the induction module losing contact. Both sometimes clear with a minute off at the isolator, particularly after a steam-heavy cooking session, because moisture on a connector is a common trigger. If either returns with the glass dry, the touch control or the module is faulty and both are service replacements rather than a DIY swap.
Smeg induction cooktop parts in stock in Sydney
These are the parts behind the codes above that we hold in stock and ship Australia-wide. Match the model number on your model sticker before ordering, or run it through the Part Finder and let it match for you. Every part we hold for the brand is listed on the Smeg parts page, and by model on the model pages; the wider range is in the induction cooktop parts store.
- DAMANI Cooktop INFINITE CONTROL SWITCH suits DCC64WSS 0303
- Linea Cooktop Infinite Control Switch Energy Regulator, L11SS, 0303
- TECHNIKA BELLISSIMO OVEN/COOKTOP KNOB REPLACEMENT PACK OF 4 0716
- TECHNIKA BELLISSIMO OVEN/COOKTOP KNOB REPLACEMENT PACK OF 4 0716
- Single Energy Regulator Switch MP101 Genuine For Cooktops Fisher Paykel
Is it safe to fix an error code yourself?
Most of the codes above are cleared with a filter clean, a hose check or a plug-in part swap, and those are ordinary DIY jobs: unplug the machine, photograph the wiring before you unplug anything, and never bypass a door lock or a thermal cut-out. Anything involving the sealed refrigerant circuit, gas, or a mains-side repair belongs with a licensed repairer.
Frequently asked questions
How do I reset a Smeg induction cooktop error?
Switch the cooktop off, then off at the isolator for one minute, then on again. E2, E3 and ER03 clear once the zone is cool, the pan is right or the glass is dry. A code that returns immediately needs the module or the supply checked.
What does E2 mean on a Smeg induction cooktop?
Excessive temperature at a cooking zone, usually because a pan boiled dry or was left empty on high. Remove the pan and let the zone cool.
What is ER03 on a Smeg induction hob?
A key is being pressed continuously, almost always by water or a pan edge on the control area. Clean and dry the glass over the controls.
What does ER47 mean on a Smeg induction cooktop?
A communication error between the touch controls and the induction module. Try a minute off at the isolator; if it returns the connection or the module needs service.
Why does my Smeg induction cooktop show E3 with a pan on it?
The pan is not suitable: its base is not magnetic, it is too small for the zone or it is off-centre. Test the base with a magnet and use a pan matched to the zone size.
Where is the model number on a Smeg induction cooktop?
On the label on the underside of the cooktop and on the rating label supplied with the manual. The model reads like SIM662WLDX or SI2M7643D and matches the parts.
Read the code, then fit the part
Dry the glass, use a magnetic pan, let the zone cool. A code that stays after a minute off at the isolator is the module, and that is a service call rather than a part swap. Find your Smeg part now
