Low battery indication.
Check AC power to the device for 24VAC plug-in transformer
If other then 24VAC replace with plug-in 103951
Battery should be replaced every 3-years
Battery backup 1-day fully charge
U-6 hot to the touch indicates bad battery or short in the wires
If there are wires landed on the J2 fire loop, check the LED2. If it…
The arm may have been installed wrong. To reinstall the arm, remove from spindle and…
Refer to the installation instructions and follow the instructions
The key is turned to the armed position, but the device does not sound when…
The likely causes are that either: - Your door contact is not activating when the…