[Solved] How to Exit Demo Mode on Electrolux EKD 513502X Cooker After Power Outage?

rarespivniceru wrote:

How to disable the demo mode on Electrolux cooker EKD 513502X?
After a series of power outages during the day I somehow managed to put the cooker in demo mode. When I connect to the power supply it d...

Initial assessment of available information
- Your symptoms (brief “d” on power-up, then “344.L”, oven OK but hob zones cold) are consistent with Electrolux showroom/demo mode being active. In demo, the hob’s heating is inhibited while the UI appears normal. This state is stored in non‑volatile memory, so it survives power cuts until you explicitly turn it off. (scribd.com)
- On EKD 513502X the hob UI can be one of two types: rotary knobs or touch keys. Electrolux service documentation provides different demo‑mode exit sequences for each UI. I give both below so you can use the one matching your control panel. (scribd.com)

Direct answer (do this first)
Pick the procedure that matches your control panel.

A) Rotary‑knob hob UI (likely on EKD 513502X):
- Switch the cooker OFF at the wall/breaker for 30 seconds.
- Restore power. Within 4 seconds of power‑on, quickly turn the second knob from the right fully counter‑clockwise to the left limit, then release. All zone displays should briefly show “d” for ~1 s and the hob will toggle demo mode. If demo was ON, this sequence turns it OFF. If needed, repeat once to ensure it’s OFF. Then test a zone with a pan. (scribd.com)

B) Touch‑key hob UI (per‑zone +/- keys and a Timer key):
- Ensure the hob is OFF.
- Touch and hold simultaneously the “+” and “–” keys of both front zones (four keys at once) for ~3 seconds until a short beep.
- Touch the Timer/selection key once. You should see “d” (demo menu). If you see “d” with a dot, demo is active; touch any zone’s “–” key to deactivate so “d” shows without the dot. The hob will switch off; then turn it on and test heating. (manualmachine.com)

If a lock “L” appears instead of heating, that is the child lock; hold the lock symbol for ~4 seconds to clear it, then retry a zone. (support.electrolux.co.uk)

Detailed problem analysis
- Why demo mode appeared: Short power interruptions can leave the UI in a service/demo state (the state is “mains‑failure safe,” saved in the power board EEPROM). That’s why power cycling alone didn’t clear it. (scribd.com)
- What you’re seeing: “d” is the demo indicator. “344.L” during startup is an internal version/config string shown momentarily by some interfaces; it is not a heating fault code. Once demo is OFF, the hob should accept power setpoints and heat, with residual heat “H” appearing afterward. The official service routine shows the demo and service menus and how to enter them (including the dot next to “d” when demo is active). (manualmachine.com)
- Two UI variants:
- Rotary interface: timing is critical—there’s a 4‑second window after restoring mains. Turning the specified knob to the left briefly is the documented toggle. (scribd.com)
- Touch interface: a 3‑key/4‑key chord plus the Timer key brings up “d / S / E” (demo / service / alarm) menus; “–” deactivates, “+” activates. (manualmachine.com)

Current information and trends
- Electrolux’s public support articles confirm demo mode symptoms (“d”, “DEMO”, “do”) and provide model‑family guidance based on control‑panel layouts; their instructions align with the service steps above. (support.electrolux.fr)

Supporting explanations and details
- Touch‑UI menu behavior: After the four‑key chord and Timer, you cycle “d → S → E” with repeated Timer presses. Use “–” to deactivate the highlighted function; a dot next to “d” means demo is ON. The hob powers off automatically after a change; that is expected. (manualmachine.com)
- Rotary‑UI behavior: The toggle is edge‑triggered in the first 4 seconds after mains reconnection; the brief “d” confirms the command was accepted. If you miss the window, cut power again and retry. (scribd.com)

Practical guidelines
- Preparation
- Turn all zones to 0 first (rotary UI) and clear any “L” lock. (support.electrolux.co.uk)
- Have someone operate the breaker while you stand at the cooker for the 4‑second rotary sequence.
- Verification
- After exiting demo, place an induction‑compatible pan with water on a zone and set a medium level; you should hear the fan and see “H” afterward.
- If the hob still won’t heat after a confirmed demo‑off:
- Check for lock “L” again; clear it. (support.electrolux.co.uk)
- If error codes (E4/E6 etc.) appear, follow the respective Electrolux guidance or book service. (support.electrolux.co.uk)

Safety and legal notes
- Work only on the user interface; do not open panels or bridge jumpers—live parts are present. All the steps above are manufacturer‑documented UI procedures. (manualmachine.com)

Suggestions for further research
- If your panel markings differ, share a clear photo of the hob controls so I can map the correct variant precisely.
- Having your Product Number Code (PNC) helps pull the exact service bulletin for your EKD 513502X variant. PNCs for this model family include 943 265 965 0x. (shop.electrolux.pl)

Brief summary
- Your cooker is in demo mode. To exit:
- Rotary UI: power on → within 4 s turn the 2nd knob from the right briefly to the left limit → “d” flashes → hob exits demo. (scribd.com)
- Touch UI: hold both front zones’ + and – (four keys) ~3 s → press Timer → with “d” showing, press “–” to deactivate (no dot) → hob powers off, then heats normally. (manualmachine.com)

Questions for you
1) Does your hob use rotary knobs for power levels or touch +/- keys per zone?
2) After trying the matching procedure, what exactly appears on the displays, and do the zones heat?
3) If it still shows “d” at startup, can you confirm your PNC (from the rating label) so I can check the exact UI variant? (shop.electrolux.pl)

If you want, I can stay online while you try the steps and adjust in real time.