9
LW-401 Operation, Installation, and Maintenance Manual
LW-401
OPERATING MODES
The LW-401 annunciates the following
modes of operation:
• Alarm
• Supervisory
• Trouble
• Normal
• Program/Test
Alarm
The LW-401 Display board lights the
appropriate red alarm LED and the general
ALARM LED to indicate to the user that an
Alarm condition exists on an initiating device
circuit (IDC).
Supervisory
A Supervisory alarm condition is indicated on
the LW-401 by the SUPERVISORY LED
flashing along with the appropriate yellow
zone LED.
Zone Trouble
A Trouble condition is displayed by a
flashing TROUBLE LED along with the
appropriate yellow zone LEDs.
System Trouble (Fault) Codes
A number is displayed in the seven segment
display to indicate System Trouble (Fault)
Codes. They are:
Code 1: AC Power Fail/Brownout
Code 2: Notification Appliance Circuit 1
Code 3: Notification Appliance Circuit 2
Code 4: Ground Fault
Code 5: Municipal Tie Fault
Code 6: Battery Fault
Code 7: System Configuration Fault
Code 8: Auxiliary Port Fault
Code 9: Output Bypassed
Code 0: Hardware Failure
3
For a further description of the system fault
codes, see System Fault Troubleshooting
(Table 3, page 25).
Normal
The Normal Mode is the absence of any
alarm, supervisory, or trouble condition. The
POWER LED is lit in Normal mode when the
system has AC power. The Alarm, Trouble,
Supervisory, Bypass, and Zone status
LEDs are off, and the internal sounder is off.
Program/Test
The Program/Test Mode is used for system
configuration, test, and maintenance func-
tions.
When the LW-401 is in Program
Mode, it does not indicate alarm or super-
visory conditions.
The System resets to normal mode after 2
minutes of front panel inactivity. When the
LW-401 is in the One Person System Test
Mode, it automatically returns to normal
mode after 20 minutes of inactivity.
Responding to a Fire Alarm
How the System Annunciates Fire Alarms
When a fire is detected on one of the initiat-
ing device circuits (IDCs), the LW-401
causes the System ALARM LED and the
appropriate Zone ALARM LED on the front
panel to flash and the system’s internal
audible to sound.
NOTE: Follow the response plan approved
by the local authority having
jurisdiction.
