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Pete, Electronic Engineer
Category: Home Security Systems
Satisfied Customers: 17657
Experience:  Over 16 years of experience installing and repairing electronics.
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Ademco vista 20. Just moved in house a year ago. I plugged

Customer Question

Ademco vista 20. Just moved in house a year ago. I plugged system in and always said ready with green light. If door opened the green light would go off. I wanted to start using it. I'm not connected to phone line. I tried to find code on line. Hoping there was a default code. I read power off and on press#* till code 00 or 20 comes up. Mine said 00. I pressed #20. Goes ready no code comes up and now goes armed.
Submitted: 1 year ago.
Category: Home Security Systems
Expert:  Pete replied 1 year ago.

Hi Mike,

Expert:  Pete replied 1 year ago.

If you have forgotten the code to arm/disarm the alarm system, then you will need the installer code to reset it.

The installer should have a note of the installer code if you don't have it available.