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Master code setting couldn't do it (alarm system ADEMCO VISTA-10)
I try to set a new code for a new person, but end up system display check zone 9 all time. I try to shut down power reset the unit, then my master code is not working and system from standby ready alarm to check zone 9. Befor inter new code was no problem at all.
Now master code looks not working and system always in check zone 9.
I got user's Manual for ADEMCO VISTA-10 from internet.
I am an electronics technician. Could you please help me to fix that problems, thanks very much.
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