I am having the same problem. Changed the battery and cleared the tamper warning on the touch screen but now I cannot arm the system due to a "trouble condition". I don't think I damaged anything as I do not have the same blinking light that you had. The red light lit for a few seconds after chaning the battery like it is supposed to. I now have to disable my backdoor senser to arm the remaining sensors at night.
Did you ever find a solution?