Electronic Alarms and Home Security Devices - Need help for my ADT DSC Classic PC1555

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DIYTim
05-08-07, 10:27 AM
I have an ADT DSC Classic PC 1555 with an LCD 55012 keypad. The main box is an Ademco Vista 10E. It is currently not monitored and last time I changed over to daylight savings time I must have made an error because it has started to automatically arm itself at 3:00 am each day. I can disarm it as normal but, if I forget and open the door without disarming it I don't get the normal 1 minute delay before it sets off the system. As this includes a very loud outside horn it is very annoying. Anyone have any idea how to reprogram it so that it will operate normally?

I appreciate any assistance you can offer me.

Thanks.

kcxj
05-08-07, 10:29 AM
The DSC 1555 and Vista 10 are two different systems. Tell us how you arm your system, do you only enter your code, or do you enter your code and press away or stay?
DIYTim
05-08-07, 02:45 PM
Hi,

I just enter the code.

kcxj
05-08-07, 03:39 PM
You must have a DSC system...it may have been installed in a vista can.
Read your manual, you can find it here:

http://www.adt.com/wps/wcm/resources/file/ebf9ef0b4b3e6d6/manual_dsc_1555.pdf
kcxj
05-08-07, 03:49 PM
Press *6 [master code] 2 to disable auto arm.
DIYTim
05-09-07, 02:17 AM
Thanks! That seems to have fixed it.
kcxj
05-09-07, 03:26 PM
No problem