- Appliances
- Kitchen robots
Code 21
Moulinex Code 21 on Cookeo: appliance pressure not rising
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
Medium
Quick answer
On Cookeo EPC09, codes 21 and 26 mean pressure is not increasing. Before opening, check that steam has stopped and never force the lid; the manual calls for water or liquid sauce and checks of the lock, seal, valves and decompression ball.
Safety first
Stop and check this first
- Never force the Cookeo open or move its manometric rod during pressure cooking; before opening, ensure steam has stopped coming from the silencing valve. Unplug for cleaning and avoid sharp tools on the seal or rim; if an overpressure safety system activated, let the appliance cool completely before opening.
Safe checks you can perform
- Add water or liquid sauce as directed for codes 21 and 26
- Check Cookeo cover lock, metal-lid nut and manometric rod
- Clean the Cookeo seal, violet valve and decompression ball
Leave these tasks to a qualified professional
- Do not attempt this professional task: Refer Cookeo seal replacement to an approved service centre
- Do not attempt this professional task: Refer Cookeo leaks after an overpressure safety activation
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Refer Cookeo seal replacement to an approved service centre
What they doThe row on leaks from the lid edges refers worn, cut or distorted seals and damaged bowl edges to an approved service centre; the manual assigns seal replacement to that centre.
They must show youthe condition of the metal lid seal and the edge of the cooking bowl.
In writingCookeo Serie EPC09 model, condition of the seal and bowl edge, and whether the seal was changed.
Refer Cookeo leaks after an overpressure safety activation
What they doIf an overpressure safety system activates, the manual calls for stopping the appliance, cooling it completely and checking and cleaning the safety valve, ball and seal; continued leaks or failure to work require referral to an SEB Approved Service Centre.
They must show youthe centre’s observations about the reported leak or failure to build pressure in Cookeo.
In writingrecorded Code 21 and 26 symptom, checks performed, and inspection outcome from the Approved Service Centre.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Add water or liquid sauce as directed for codes 21 and 26
- Who:
- you, after stopping the appliance and ensuring that internal pressure has fallen (no more steam is coming out of the silencing valve) before trying to open the cover.
- How:
- open the cover without forcing it and add liquid to your recipe (water or liquid sauce) as instructed in the 'Code 21 and 26: the appliance pressure does not increase' row of the manual.
- Result that matters:
- supply the recipe liquid required by the manual so the Cookeo can increase in pressure.
- If Cookeo pressure rises after adding liquid for Code 21:
- record the amount added and the outcome of this Code 21 episode.
- If Code 21 returns despite adding liquid:
- check the cover lock, central nut, valves, seal and decompression ball next.
- Evidence to keep:
- amount of water or liquid sauce added to the recipe and whether Code 21 cleared on the next cycle.
Evidence: Moulinex Cookeo Connect Serie EPC09 operating instructions and error codes
Check Cookeo cover lock, metal-lid nut and manometric rod
- Who:
- you, once the appliance is unplugged and completely cold before handling the metal lid.
- How:
- check that the nut at the centre of the metal lid is properly tightened, that the manometric rod is mobile and clean, and that the cover is locked with the marker opposite the closed padlock.
- Result that matters:
- check the cover lock, manometric rod movement and central nut tightness listed in the Cookeo troubleshooting table.
- If tightening the central nut or locking the cover opposite the closed padlock clears Code 21:
- note the check performed.
- If pressure still fails to rise with the cover locked:
- stop the Cookeo and, once cold and unplugged, check the seal, violet valve and ball for dirt.
- Evidence to keep:
- marker alignment opposite the closed padlock, central nut tightness and mobility of the manometric rod.
Evidence: Moulinex Cookeo Connect Serie EPC09 operating instructions and error codes
Clean the Cookeo seal, violet valve and decompression ball
- Who:
- you, with the Cookeo unplugged and completely cooled down.
- How:
- check the cleanliness of the seal, violet safety valve and manometric rod; clean the metal lid seal and edge of the bowl with a damp cloth without using sharp instruments; clean and dry the decompression ball and its casing, and check that the ball is correctly positioned with its cover in the locked position.
- Result that matters:
- remove dirt or mispositioning on the seal, valves and decompression ball that prevent pressure build-up.
- If the appliance increases in pressure without leaks after cleaning and locking the ball cover:
- repeat this Cookeo cleaning routine after every use.
- If the seal has wear, cuts or distortions, the bowl edge is damaged, or the product still leaks or is no longer working:
- take the Cookeo to an approved service centre and report the leak or pressure problem.
- Evidence to keep:
- condition of the seal, violet safety valve and decompression ball cover in the locked position after Code 21.
Evidence: Moulinex Cookeo Connect Serie EPC09 operating instructions and error codes
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Appliances
- Brand
- Moulinex
- Product type
- Kitchen robots
Known code variants
- Code 21 and 26
- Code 26
- Código 21
- Código 26
- Códigos 21 y 26
- La presión del aparato no aumenta
- The appliance pressure does not increase
What it means
The Moulinex Cookeo Connect manual for series EPC09 or EPC09-A groups codes 21 and 26 as an alert that appliance pressure is not increasing and calls for water or liquid sauce. For that symptom it also asks you to check the cover lock and the cleanliness of the seal, violet safety valve, manometric rod and decompression ball. A separate row on leaks from the lid edges lists dirt, a loose central nut, a worn, cut or distorted seal and a damaged bowl edge.
Warnings and stop conditions
- Highsource verified
Never force the Cookeo open or move its manometric rod during pressure cooking; before opening, ensure steam has stopped coming from the silencing valve. Unplug for cleaning and avoid sharp tools on the seal or rim; if an overpressure safety system activated, let the appliance cool completely before opening.
Evidence: Moulinex Cookeo Connect Serie EPC09 operating instructions and error codes
Symptoms and causes
Probable causes · in order
- Insufficient water or liquid sauce for Cookeo pressurePossible
In the 'Error codes' row for Code 21 and 26, the Cookeo manual states that the appliance pressure does not increase and instructs you to add liquid to your recipe (water or liquid sauce).
Evidence: Moulinex Cookeo Connect Serie EPC09 operating instructions and error codes
- Cookeo ball, valves, seal or cover dirty or out of positionPossible
For pressure not increasing, Cookeo calls for checks of the seal, violet valve and manometric rod for cleanliness and the cover marker opposite the closed padlock; it also requires a correctly placed ball, its cover locked, and the ball and casing clean and dry.
Evidence: Moulinex Cookeo Connect Serie EPC09 operating instructions and error codes
- Cookeo lid leaks from dirt, loose nut, seal or bowl damagePossible
Under 'Steam is escaping from the edges of the lid during cooking (leaks)', the manual cites a dirty metal lid seal or bowl edges, a metal-lid nut not properly screwed into place, wear and tear, cuts and distortions of the seal (changed every three years at maximum), or a damaged bowl edge.
Evidence: Moulinex Cookeo Connect Serie EPC09 operating instructions and error codes
Virtual technician
Does Code 21 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Moulinex Cookeo Connect Serie EPC09 instrucciones de funcionamiento y códigos de error
Moulinex · 2026 · official_doc
- 2
Moulinex Cookeo Connect Serie EPC09 operating instructions and error codes
Moulinex · 2026 · official_doc
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