Panel is displaying COM FAULT but is sending reports just fine.
In order for all reports to be sent correctly and for the panel to operate correctly, there must be an account number and phone number programmed for phone numbers 1 and 2 and account numbers 1 and 2.
To check the phone number and account number programming from the built-in keypad, follow these steps:
Press */Clear three more times to exit program mode.
Part numbers D7024, DS9400, DS9400I, DS9400M