I recently installed the AlarmDecoder AD2USB to my HA setup. I installed the integration and configured the zones and arming preferences in the config. However, when I try to arm or disarm the p20, it doesn’t change its status from “disarmed.” Since there’s no yaml code to edit, I’m not sure what I should try next.
BTW, I checked my wiring and connection points on the alarm, and everything seems right. The green led flashed about twice a second, so it’s getting power.
Did you program your Vista P20 to the keypad address of the alarm decoder module? The Vista P20 will not take an arm/or disarm command without having the address programmed while in programming mode.
To enter programming mode you must have a 2 line English display such as a Honeywell 6139 or similar.
The fixed English displays will not work for programming.
Did that fix your problem? I have similar issues, but my AlarmDecoder is set to CON ADR 18, 18 is active on my alarm and I can use the AlarmDecoder to Arm/Disarm when it’s attached to a PC.
The other functions of AlarmDecoder work in HA: All the sensors show activity. When the Vista is tripped, it sends a trip state to HA to set off my phone.
I couldn’t test the solution, since the installer, never provided us with the master/programming code. I guess he wants to ensure that no one else takes over their role!