
✅ Status: Active / In Stock
Good News: Status: Active / In Stock. We carry replacement main boards, backup batteries, and repair parts for the AL802-UL-ADA.
Common Altronix AL802-UL-ADA Trouble Codes
- AC FAIL: The unit has lost primary 120VAC power and is running on backup batteries.
- BAT FAIL: The backup batteries are missing, depleted, or failed the automatic load test.
- NAC FAULT: A Notification Appliance Circuit (horn/strobe loop) has an open or short circuit.
- GROUND FAULT: A wire on one of the output circuits is touching the metal conduit or enclosure.

If your Altronix AL802-UL-ADA is showing a persistent battery or NAC fault, we can diagnose the circuit and replace the main board. Austin Fire Inspections carries active replacement parts to get your building’s horns and strobes back online and fully compliant fast.
