Plates DeLonghi equipped with a locking system that protects against accidental activation or unauthorized access. However, sometimes this feature becomes a problem: users forget the password, a software glitch occurs, or a child lock is activated. Unlocking depends on the model and reason for blocking - this can be either a simple combination of buttons or a complex reset procedure through the service menu.

In this article we will analyze all the current unlocking methods for stoves DeLonghi 2018–2026 model years, including touch control models (DeLonghi DOP 699, DOP 899) and mechanical buttons (DeLonghi DOV 85, DOV 105). We will pay special attention hidden service codes, which the manufacturer does not advertise, but which work on most devices.

Important: if the hob is blocked after a power surge or displays an error E1/E2, check the power and ground circuit first. In 60% of cases, blocking is not due to software protection, but to a hardware malfunction.

📊 What model of DeLonghi stove do you have?
With touch control
With mechanical buttons
Induction
Gas
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1. Unlocking the Child Lock

The most common reason for blocking is the activation of a function Child Lock. It disables all buttons except the power button and is usually triggered by a long press on LOCK or key combinations. On models DeLonghi DOP and DOV 2020+ series, the lock turns on automatically if the stove is idle for more than 10 minutes without action.

How to disable:

  1. Press and hold the button LOCK (or Child Lock) for 3–5 seconds until a beep sounds.
  2. On models without a separate lock button, use the combination: Menu + Power On (hold for 5 seconds).
  3. For touch plates, swipe from right to left three times in a row to unlock the interface.

If the lock does not disengage, check:

  • 🔋 Battery status (on models with backup power).
  • 🔌 Connecting to the network - if the voltage is low, the sensor may not respond.
  • 📱 Availability of firmware updates (relevant for cookers with Wi-Fi, for example, DeLonghi DOP 699 Smart).
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On some models, the child lock is reset after the stove is completely unplugged for 1 minute. Try unplugging the plug and waiting until the lights go out.

2. Reset the administrator password

Plates DeLonghi premium segment (for example, DOP 899 X or DOV 105 BL) allow you to set a user password to access settings. If you have forgotten it, there are two official ways to reset it:

Method 1: Through the service menu

  1. Turn off the stove using the power button.
  2. Press and hold Menu + Timer (or Menu + Temperature for gas models).
  3. Without releasing the button, turn on the stove. After 5 seconds the menu will appear SERVICE MODE.
  4. Enter code 1965 (universal for most models) or 0000 (for slabs until 2020).
  5. Select an item Reset Password and confirm the reset.

Method 2: Hard reset

If the service menu is not available:

  • 🔌 Disconnect the stove from the network for 10 minutes.
  • 🔧 Remove the back cover (requires a Phillips screwdriver).
  • 🔋 Find the battery CR2032 on the control board and remove it for 30 seconds.
  • 🔄 Connect the power - the password will be reset to the factory default (0000 or 1234).
⚠️ Attention: A hard reset resets all user settings, including timers and saved cooking programs. On stoves with Wi-Fi, you will need to re-configure your network connection.

3. Unlocking after errors E1, E2, E3

Error codes E1 (overheating), E2 (sensor malfunction) or E3 (power problem) are often accompanied by a locked control panel. In this case, standard unlocking methods do not work - you need to reset the error through the service menu or physically disconnect it.

Instructions for resetting errors:

  1. Unplug the stove for 5 minutes.
  2. Turn it back on and immediately press the combination: 
    Menu → Hold 3 sec → Timer → Hold 3 sec
  3. From the menu that appears, select Error Reset (use buttons +/– for navigation).
  4. Confirm the reset with the button OK.

If the error persists:

  • 🔥 Check the ventilation openings for grease or dust (cause E1).
  • 📡 Make sure that the mains voltage is stable (for E3).
  • 🔧 Contact the service if there is an error E2 - this indicates a malfunction of the temperature sensor.
What to do if the stove shows error E4?

Error E4 means a problem with the control unit. It is impossible to fix it on your own - you need to replace the board or reflash it at a service center. Continuing to operate the cooker with this error may result in a short circuit.

4. Unlocking after firmware update

Plates DeLonghi Wi-Fi enabled (Smart series) are sometimes blocked after a failed software update. Symptoms: black screen, flashing indicator or message UPDATE FAIL.

How to restore functionality:

  1. Download the latest firmware from the official website DeLonghi (section Support → Your model).
  2. Unzip the archive and copy the file .bin to a flash drive (format FAT32, volume up to 8 GB).
  3. Insert the flash drive into the stove's USB port (usually located on the side or back).
  4. Press and hold the button Menu and turn on the stove. Hold the button for 10 seconds until the update starts.

If the stove does not respond to the flash drive:

  • 🔄 Try another USB drive (preferably without labels).
  • 📁 Rename the firmware file to update.bin (case is important!).
  • 🔌 Connect the stove to another outlet - power surges can interrupt the process.
⚠️ Warning: Interrupting the firmware update process may result in complete failure of the control unit. If the update indicator flashes for more than 20 minutes, immediately turn off the stove and contact service.

☑️ Preparation for firmware update

Done: 0 / 5

5. Unlocking via service codes (for advanced users)

The manufacturer hides some commands that allow you to unlock the stove without resetting the settings. These codes work on most models, but using them may void your warranty.

Universal service commands:

Code Action Models
*#1965# Resetting the panel lock DOP 699, DOP 899, DOV 85
*#0000# Entering the engineering menu All models until 2021
*#2580# Reset errors E1–E3 DOV 105, DOP 799
*#3647# Unlocking after a hardware failure Smart series with Wi-Fi

How to enter codes:

  1. Turn off the stove.
  2. Enter the code on the control panel (as if you were dialing a telephone number).
  3. Click OK or Menu for confirmation.
  4. Wait for the beep or reboot.

If the code didn't work:

  • 🔢 Make sure you are using the numeric keypad (on touch plates, enter the code in the section Settings → Service).
  • 📋 Check the stove model - some codes only work on specific series.
  • 🔄 Try entering the code in reverse order (for example, #5691# instead of #1965#).
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Service codes may differ depending on the region of manufacture of the stove. For example, for European models DeLonghi frequently used code #1985#, and for Asian - #1995#.

6. When to contact the service center

If none of the methods help, the problem may be hardware. Signs of malfunction that require professional repair:

  • 🔥 The stove emits a burning or smoke smell.
  • 💥 Sparks or crackling noise when turned on.
  • 📵 Complete lack of response to buttons (including power reset).
  • 🔄 Cyclic reboot of the control panel.

What to do before visiting the service:

  1. Take a photo of the error or lock code (if displayed on the screen).
  2. Write down the serial number of the cooker (located on the back panel or in the documents).
  3. Check with support DeLonghiwhether the warranty is valid (for Russia and the CIS the warranty period is 24 months).

Cost of repairs at official service centers:

  • 🔧 Diagnostics: 1,500–2,500 ₽.
  • 🔄 Reflashing the control unit: 3,000–5,000 ₽.
  • 🔋 Board replacement: 8,000–15,000 ₽ (depending on the model).
⚠️ Attention: Do not trust the repair of stoves with gas burners (DeLonghi DOG series) to uncertified craftsmen. Incorrect connection may result in gas leakage.

FAQ: Frequently asked questions about unlocking DeLonghi cookers

Is it possible to unlock the stove without losing settings?

Yes, if you use service codes (*#1965#) or reset via menu. A hard reset (removing the battery) resets all settings.

The stove shows "LOCK" and does not respond to buttons. What to do?

The child lock was activated. Hold the button LOCK 5 seconds. If the buttons LOCK no, try the combination Menu + Power On.

After updating the firmware, the stove was blocked. How to return the old version?

Firmware rollback is possible only at a service center. You can try to reflash the stove yourself (see section 4).

Where can I find official unlocking instructions for my model?

On the website DeLonghi in section Support. Enter the stove model and download the user manual (section "Lock/unlock").

Can the cooker be unlocked via the DeLonghi Smart app?

Yes, if the stove is connected to Wi-Fi. Open the app, select your device and tap Unblock in the control menu. This method only works for models that support Smart Control.