Programming
AC-F/G4x Series Installation and Programming Manual 65
If the Programming code is invalid, you hear a long beep
and the controller returns to Normal mode without erasing
the memory contents.
Replacing a Programming Code
unit must be in Normal mode; otherwise, this does not
left LED is green before
.
To replace a Programming code:
1. Remove power from the controller.
2. Press and hold the REX button.
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 unit using the initial default code before the
controller reverts to the existing code.
The deafult code depends on the PIN length selected (see
Table 2).
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