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We carry replacement main boards, backup batteries, and repair parts for the AL-1042-UL-ADA.
Are you wondering why your Altronix AL-1042-UL-ADA is throwing a ground fault or causing your main fire panel to beep? Whether you are dealing with a dead backup battery or a severed strobe wire, finding the exact trouble code is the first step to getting your building back to normal.
Common Altronix AL-1042-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 their automatic load test.
- NAC FAULT: A Notification Appliance Circuit (horn/strobe loop) has an open or short circuit.
- GROUND FAULT: A field wire on one of the output circuits is touching the metal conduit or enclosure.
If your Altronix AL-1042-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.
Frequently Asked Questions: Altronix AL-1042 Troubleshooting
The Altronix AL-1042-UL-ADA itself does not have a built-in buzzer, but when it detects a problem, it drops a relay that sends a trouble signal to your main fire alarm control panel. When your main panel starts beeping, it usually means the Altronix extender has lost AC power, failed a battery test, or detected a ground fault on one of your horn/strobe circuits.
A NAC (Notification Appliance Circuit) FAULT means there is an open wire or a short circuit on the loop that connects your building’s horns and strobes. This is extremely common after a roof leak or if a contractor accidentally nicks a wire during a remodel. Because life safety devices are compromised, a licensed fire alarm technician needs to trace the circuit with a multimeter to find and fix the break.
An AC FAIL means the unit has lost its primary 120V power and is draining your backup batteries. First, check your building’s electrical panel to ensure the dedicated fire alarm breaker hasn’t tripped. If the breaker is on but the AL-1042 still shows an AC FAIL, the internal power supply board has likely failed and the main board will need to be replaced by a local technician.
While swapping two 12V 7AH or 12AH batteries seems simple, commercial fire alarm systems in Texas must be serviced by a licensed fire alarm technician. Replacing the batteries without testing the panel’s charging circuit often leads to the new batteries dying a few days later. A licensed tech will verify the charging voltage so you don’t fail your next Austin fire marshal inspection.
Ground faults can be incredibly frustrating for property managers, but our local repair technicians have the specialized tools to isolate and trace the short quickly. If the Altronix main board itself has been damaged by a power surge or lightning strike, we carry active replacement parts to get your system back to “Normal” status on the same day.
