Exactly Alarm, the OP isn't giving us much here, that RPK tells you exactly what's going on. OP also failed to mention if the service (spanner) is lit.
OP here's a list of panels that when paired with your keypad display such messages :
9853
9851
9751
9752
9651
That's all I can think of at the moment,should think your panel is one listed above.
Yet again we have another failing to read the full text message that is clearly displayed on their RPK and accessible in full if one should read the log.
As for this OP, I'am done guessing here !
e fek sake manno, July 2012