System reverts from Arm Away to Arm Stay when using a SEM-Honeywell/ADEMCO Vista
The Honeywell Vista contains a feature called Auto Stay. The default setting for Auto Stay is set to enabled.
When Auto Stay is ON, the user must exit using an entry/exit sensor to Arm Away the system. If an entry/exit sensor is not opened, the system reverts to Arm Stay. This includes remote arming using the Customer Website or app.
For more information about configuring auto stay, see Enable or disable auto stay on a SEM-Honeywell/ADEMCO Vista.