My home security system uses the Napco Gemini GEM-P1632 control panel and two GEM-RP1CAe2 keypads. I was getting a "low battery" message for a day or two. Then, I got an "Out of System" message on both keypads and neither one would work (i.e. pushing buttons would beep but had no effect on the system and the display did not change). I entered the configuration mode in keypad 02 and as I cycled through the options I mistakenly entered "02" at the "compatibility number" function instead of the "keypad address" function (there was no compatibility number set originally). Ultimately, it had no obvious effect on the system and the "Out of System" error persisted.
As I continued to trouble shoot, I disconnected the battery and things went back to normal, for the most part. Keypad 01 is functioning normally, but it is displaying "E02-00 SERVICE" (low battery error) and "E10-02 SERVICE" (Keypad response failure). Keypad 02 is displaying "02 compat# error" and it is unresponsive in that the buttons beep when pushed but have no effect. I have tried to enter the configuration mode as I did before (11123 "function") but it has no effect. I figure I goofed it up when entered a compatibility number the first time around, but now I can't get into configuration mode to try to fix it. I would appreciate any advice on how to fix my goof up.