How to Diagnose "Service Perimeter" D7112 Panel D1254 Keypad

Overview: Keypad displays a flashing "service perimeter" because a zone is or was faulted.

Issue

Keypad displays a flashing "Service Perimeter" with no zones displayed.

Solution

A Perimeter zone is or was faulted.

If a zone is displayed, the zone must be made normal first.

If no zone is displayed, enter CODE + ENTER + CLEAR + CLEAR . This will clear the keypad memory.