Unlock VISTA 15P KEYPAD - Honeywell Ademco 6160 Alpha Keypad Vista 15p, 20p

SOURCE: 6160 key pad "open circuit"

This could be caused by a mis-wired zone on the control panel. If there are any unused zones on the panel, and/or if the bell circuit is unused, a resistor ( info in installation guide ) must be used across the terminals or you will get an open circuit message. If you can't see it straight away, have your local alarm company check your system and they can find this fault for you quite easily.

SOURCE: I have just fired up

Your keypad needs to be addressed. Within 30 seconds of powering up the panel, go to the keypad and hold down the 1 and 3 buttons. Address 31 will pop up on the display. Push 1 then 6 then *(star).

That should do it. The address may pop up with a different number than 31. As long as you address it to 16 you're good to go. Address 16 is the default address for the first keypad on the system.

Hope this helps.