Oven displays F9 and the door may remain locked or unlocked incorrectly; self-clean may not start or complete.

Safety first: Disconnect power at the breaker before attempting to manually unlock the door or access the lock assembly.

• Allow cool-down: If the error occurred during self-clean, wait until the oven is completely cool. Some models will not unlock until a safe temperature is reached.
• Manual release: Consult your Dacor manual for the location of the manual door lock release (often accessible through the top or front panel). Use the release to open the door if it is stuck locked.
• Inspect lock assembly: Remove the top or front panel to access the door lock motor and latch. Check for broken plastic parts, bent linkage, or obstructions.
• Test lock motor and switches: With power off, check continuity of the lock motor and associated limit switches using a multimeter. Replace the door lock assembly if the motor is open or switches do not change state when the latch moves.
• Check wiring: Inspect the harness from the lock assembly to the control board for damage or loose connectors.

Warning: Never force the oven door open with tools; this can damage the frame and glass. Use the manual release or have a technician service the lock.