Issue
OK LED is flashing rapidly on keypad for 2212 panel.
Solution
This is due to an alarm condition during the last arming period. Press the 3 key, plus enter the owners code to clear alarm memory.
Part numbers D2212, D2212B, D2212BE, D2412, D2412U, D2412UE, D2812, D2812U, D2812P, D222A, D223A, D202A, D220A