Why does my DSC alarm system (PC1616/PC1832/PC1864) keep going off randomly?

Why does my DSC alarm system (PC1616/PC1832/PC1864) keep entering pseudo programming mode on its own? None of the keypad buttons respond unless I press and hold #, then 1. I’ve shared a video of the issue on Imgur [link included].

It’s frustrating because I can’t seem to exit this programming mode unless I use that specific key combination. Any other buttons I press are ignored by the panel.

However, the system reverts back to programming mode after about 30 seconds. Does anyone have any advice or suggestions to resolve this?

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The keypad is currently in global mode. To switch it to partition 1, you’ll need the installer code.