Erase user codes
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Hold the lock button pressed to enter programming mode.
The LED turns steady green.
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Enter the administrator code.
The LED turns steady green.
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Press button 4 to select programming of user codes.
The LED turns steady green.
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Select which one of the 4 memory positions to be erased by pressing the
corresponding button, 1-4.
The LED turns steady green.
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Press the lock button to erase the user code.
The LED flashes green.