Programming the AC-Q74
AC-Q74 Installation and Programming Manual 35
11.11 Return to Factory Default Settings
You must be very careful before using this command! Doing
so erases the entire memory, which includes all user and
special codes, and returns all codes to their factory default
settings.
To return to factory default settings:
1. Enter Programming Mode.
2. Press “00” to enter Menu 0.
The Mode LED flashes red.
The Door LED flashes red.
3. Enter the 4-digit Programming code.
If the Programming code is valid, all memory is erased. You
hear three beeps and the controller returns to Normal mode.
If the Programming code is invalid, you hear a long beep and
the controller returns to Normal mode without erasing the
memory of the controller.
11.12 Replacing a Lost Programming Code
The AC-Q74 must be in Normal mode; otherwise, this does
not work. Make sure that the Mode LED is green before
proceeding.
To replace a lost programming code:
1. Remove power from the Power Supply Unit (PC-25T).
2. Press the REX button on the Power Supply Unit (PC-25T).
3. Apply power to the unit with the REX button pressed.
4. Release the REX button.
5. You now have 15 seconds to program a new Programming code
into the Access Control unit using the initial default code 1234,
before the controller reverts to the existing code.
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