!!
critical ADT
Error Code Fire
A fire alarm is triggered; can be manually or sensor-initiated.
? What Causes This
Detected heat or smoke in the premises or user manual operation.
✓ How to Fix It
Investigate and extinguish the source, then reset the system via touchpad as needed.
Source: page 23 of the official manual
From the manual
This error code appears in:
ADT Safewatch Pro 3000