What does Convotherm code E01.0 mean?

Convotherm easyTouch code E01.0 means: Not enough water reaching the appliance. Common causes include convotherm's own threshold: water pressure is below 0.5 bar five seconds after the valve is activated. so this is measured at the machine rather than inferred, and it fires quickly. common causes in their order: water tap closed, solenoid valve dirt filter contaminated, solenoid valve fault.

What does Convotherm code E02.0 (ID=24) mean?

Convotherm easyTouch code E02.0 (ID=24) means: Excessive temperature in the wiring space. Common causes include not the oven, the electrical compartment. convotherm's causes are environmental rather than electrical: vent slits blocked by an inadequate gap between the appliance and the wall, or air supply blocked. their own installation figure is a 50mm safety clearance at the rear and sides and 500mm above for ventilation, so a machine pushed back against a wall during a deep clean can start throwing this days later.

What does Convotherm code E03.x mean?

Convotherm easyTouch code E03.x means: Frequency converter fault. Common causes include convotherm's service handbook notes that an e03 message may mean the altivar 12 frequency converter has detected a fault with itself rather than with the fan it drives, and gives a separate procedure for identifying which. field reports of e03 on fan faults describe motor winding overheat, overload, or a contactor or wiring problem raising the winding temperature.

What does Convotherm code E13.0 (ID=20) mean?

Convotherm easyTouch code E13.0 (ID=20) means: Steam generator thermoelement, excessive temperature. Common causes include b-series machines only, since s machines have no steam generator. convotherm's causes are almost all water and chemistry: foaming in the steam generator caused by wrong or non-original cleaning agents, calcification of the generator, or the immersion heaters boiling dry. their published water hardness limits are the context: 4 to 7 german degrees for the steam generator side, and their own documentation says a softening system is compulsory above 7 degrees on oes and ogs.

What does Convotherm code E27.0 (ID=19) mean?

Convotherm easyTouch code E27.0 (ID=19) means: Safety temperature limiter, B8 thermoelement, excessive temperature. Common causes include the safety limiter measuring an over-temperature, with the same published causes as e13.0: foaming from non-original cleaning agents, calcification, or immersion heaters boiling dry. where e13 is the control noticing, e27 is the safety device acting.

What does Convotherm code Code 33 (OEB and OES) mean?

Convotherm easyTouch code Code 33 (OEB and OES) means: Steam generator will not reach its water level. Common causes include convotherm's wording differs by machine, which is the useful part: on oeb it is not enough water in the steam generator, the level could not be reached within 3 minutes. the three-minute window means a slow fill reads as a failure long before anyone would notice a supply problem by eye.

What does Convotherm code Emergency mode mean?

Convotherm easyTouch code Emergency mode means: Not a fault: the oven is still usable. Common causes include convotherm states that its fully automatic error diagnosis system displays a code and a description, and that to continue operating, emergency mode is available for many faults. so a coded oven is not automatically an out-of-service oven, and knowing that can save a shift.

Convotherm easyTouch: what does "Any code not in the documentation" mean?

Convotherm easyTouch code Any code not in the documentation means: Convotherm says stop. Common causes include their own instruction is unusually clear and worth repeating verbatim in substance: always contact customer service for help if any error messages appear that are not listed in the customer documentation. the published list is the subset a user may reasonably resolve; anything outside it is not an invitation to experiment.

Convotherm easyTouch combi oven Error Codes

Applies to: easyTouch combi steamers (OES, OEB, OGS, OGB). Compiled and paraphrased from Convotherm's own documentation for the OES, OEB, OGS and OGB combi steamers with easyTouch: the easyTouch user manual published by CONVOTHERM Elektrogeraete GmbH of Eglfing, Germany, and the OEB/OES/OGB/OGS service handbook. Convotherm is a Welbilt brand and Welbilt's own asset server blocks automated access, so these are cited from distributor-hosted copies of the manufacturer's PDFs, which is the accepted case here; distributor-AUTHORED code lists are not used. THIS TABLE IS DELIBERATELY PARTIAL. Convotherm publishes a long E-code set including E04, E05.x, E11, E12.1 to E12.4, E14, E15, E21.x, E22.x and E23.x, and only the codes whose meanings could be read directly from a manufacturer document are reproduced below. The rest are omitted rather than guessed at. Codes and behaviour also vary between the 4 series, maxx pro and the older OES generation; confirm against the manual for your exact model and software version. Table last updated Aug 22, 2026.

How to read the codes

Convotherm error codes have TWO PARTS and both matter. The visible code is an E followed by a number and a decimal, such as E01.0 or E13.0, and alongside it the control carries an ID number, such as ID=24 or ID=20, which is what a technician quotes when ordering or calling. Record both. The letters before the code identify the machine rather than the fault: O is always present, the second letter is E for electric or G for gas, and the third is B for an appliance with a steam generator or S for one with injection. So an OGB is a gas machine with a steam generator and an OES is an electric machine with injection, and several codes mean different things between the two, because only B machines have a steam generator to go wrong. Convotherm's own note is that the system displays not just a code but a description of the fault, and that EMERGENCY MODE lets you keep cooking in many cases: check whether that is running before assuming the oven is out of service. The same manual is explicit that any error message not listed in the customer documentation means calling service rather than experimenting.

The codes

Code	Meaning	Likely causes	Operator-safe steps	Technician work
E01.0	Not enough water reaching the appliance	Convotherm's own threshold: water pressure is below 0.5 bar five seconds after the valve is activated. So this is measured at the machine rather than inferred, and it fires quickly. Common causes in their order: water tap closed, solenoid valve dirt filter contaminated, solenoid valve fault	Check the water tap first, then the filter. This is the code most often fixed without a technician	Dirt filter in the solenoid valve, then the valve itself, then supply pressure at the appliance
E02.0 (ID=24)	Excessive temperature in the wiring space	Not the oven, the ELECTRICAL COMPARTMENT. Convotherm's causes are environmental rather than electrical: vent slits blocked by an inadequate gap between the appliance and the wall, or air supply blocked. Their own installation figure is a 50mm safety clearance at the rear and sides and 500mm above for ventilation, so a machine pushed back against a wall during a deep clean can start throwing this days later	Check nothing is against the back or sides of the oven and that the vents are clear. Then check what is above it	Confirm clearances before condemning components. Recurrence after a move is almost always the install
E03.x	Frequency converter fault	Convotherm's service handbook notes that an E03 message may mean the Altivar 12 frequency converter has detected a fault with ITSELF rather than with the fan it drives, and gives a separate procedure for identifying which. Field reports of E03 on fan faults describe motor winding overheat, overload, or a contactor or wiring problem raising the winding temperature	Nothing operator-safe. Note the full code including its decimals, which differ by model	Read the converter fault first, then the fan motor. Replacing the motor without checking the converter is how this comes back a week later
E13.0 (ID=20)	Steam generator thermoelement, excessive temperature	B-series machines only, since S machines have no steam generator. Convotherm's causes are almost all water and chemistry: FOAMING IN THE STEAM GENERATOR caused by wrong or non-original cleaning agents, calcification of the generator, or the immersion heaters boiling dry. Their published water hardness limits are the context: 4 to 7 German degrees for the steam generator side, and their own documentation says a softening system is compulsory above 7 degrees on OES and OGS	Say what cleaning agent has been used and whether the water is treated. Both are causes here and both are things only the site knows	Descale, and check the cleaning agent is original. Non-original cleaner is a documented cause, not a warranty formality
E27.0 (ID=19)	Safety temperature limiter, B8 thermoelement, excessive temperature	The safety limiter measuring an over-temperature, with the same published causes as E13.0: foaming from non-original cleaning agents, calcification, or immersion heaters boiling dry. Where E13 is the control noticing, E27 is the safety device acting	Stop using the oven and call. A tripped safety limiter is not something to work around	Treat the cause rather than resetting the limiter. Recurrence means the generator is still scaled or still foaming
Code 33 (OEB and OES)	Steam generator will not reach its water level	Convotherm's wording differs by machine, which is the useful part: on OEB it is not enough water in the steam generator, THE LEVEL COULD NOT BE REACHED WITHIN 3 MINUTES. The three-minute window means a slow fill reads as a failure long before anyone would notice a supply problem by eye	Check the water supply is fully open, not just on. A partly closed valve fills slowly enough to trip this	Fill solenoid, level probes and supply pressure. Compare against the 0.5 bar threshold behind E01.0
Emergency mode	Not a fault: the oven is still usable	Convotherm states that its fully automatic error diagnosis system displays a code AND a description, and that to continue operating, EMERGENCY MODE is available for many faults. So a coded oven is not automatically an out-of-service oven, and knowing that can save a shift	Check whether emergency mode is offered before sending food elsewhere. Report the code either way	Emergency mode is a stopgap, not a repair: it usually disables the affected function rather than fixing it
Any code not in the documentation	Convotherm says stop	Their own instruction is unusually clear and worth repeating verbatim in substance: always contact customer service for help if any error messages appear that are not listed in the customer documentation. The published list is the subset a user may reasonably resolve; anything outside it is not an invitation to experiment	Record the code, the ID number and what the oven was doing, then call	The service handbook carries the full set including converter sub-codes; the user manual deliberately does not

Refrigerant-side work legally requires an EPA Section 608 certified technician, and opening electrical panels is technician work. When in doubt, record the code and the cycle behavior; that detail alone shortens the service call.

If this needs a combi oven technician

2 companies in this directory name Convotherm on their own site: that page shows who has been phone-confirmed, who publishes 24/7 cover, and what each puts in writing. Start there if the brand matters more than the city.

Two questions worth reading before you ring anyone: what to do first when a code appears and how to tell whether it is yours to fix.

Convotherm is a Welbilt brand, and Welbilt runs one technical support line covering all of them. The number, and what they will and will not do for you, is worth reading before you ring: most will help a technician who is already on site and will not talk an operator through a repair.

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Related: the PM checklist that prevents the most common codes outright, and the operator guides for symptom-first diagnosis.

Not sure this is the right make? The lookup by code shows every make that uses a given code, and flags the ones that mean different things depending on the machine in front of you.