Oven door remains locked after pyrolytic cycle, error on display, oven unusable

Safety first: Ensure the oven has fully cooled (several hours after pyrolytic cleaning). Disconnect power before mechanical intervention.

• Power reset: Turn off the breaker for 5–10 minutes, then restore power. Some De Dietrich models will attempt to reset the lock on power-up.
• Check for residual heat: If the cavity is still hot, the lock will remain engaged by design. Wait until completely cool.
• Manual release (if accessible): Remove the top panel of the oven (with power off). Locate the lock mechanism and look for a manual release lever or tab. Gently move it to unlock the door.
• Inspect lock assembly: Once open, check the lock for heat damage or deformation. Test the motor and microswitches with a multimeter. Replace the lock assembly if faulty.
• Control issue: If the lock hardware is good but the control keeps it engaged, the main control board may require replacement.