Edwards Signaling 2400 Series - Manual (Page 31)

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Reset Mode
When the facility is safe to re-enter, the panel may be Reset. Manual stations and other manually
restorable devices must be returned to their normal condition. Non-restorable devices which have been
activated by the fire must be replaced. In the event replacement is not immediately feasible, disable the
affected zone using its disable switch. Pressing the
RESET switch automatically resets the smoke detectors
and returns the panel to the normal (trouble mode if zones have been disabled) mode. If all alarm initiating
devices have not been restored, the panel will re-enter the alarm mode. The entire reset process takes
about 20 seconds to complete. The panel can NOT be reset while the alarm silence inhibit timer is active.
Panel reset does not change a zone’s enabled/disabled status.
Reset the panel by pressing the RESET switch. Reset causes the system trouble LED to light, the trouble
buzzer to sound, and the trouble relay to go into the trouble state. Operation of the RESET switch also
causes all front panel LEDs to turn on, verifying their operation. After internal processing is completed, the
panel returns to the normal mode.
Trouble Mode
When the panel is in the Trouble Mode, some portion of the panel or field wiring is in an abnormal
condition and the proper operation of the fire alarm system may be affected. If an alarm is detected while
in the trouble mode, the panel will enter the alarm mode and sound an alarm. If a supervisory condition is
detected while in the trouble mode, the panel will enter the supervisory mode mode and the trouble
contacts will remain activated.
In the trouble mode: the system trouble LED flashes, the trouble buzzer sounds at a 20 pulse/minute rate,
the trouble relay operates, and the Relay/City-Tie Module transmits a trouble signal if it is configured to
transmit trouble. The dialer will transmit a trouble signal to the Central Monitoring Station. If the trouble
occurs on an Initiating Device Circuit, the trouble message will be zone specific.
The Relay/City-Tie Module (if configured to transmit trouble) delays its trouble output for 6 hours when
activated by a loss of AC power. The base panel trouble relay activates 6 seconds after the loss of AC
power. The relay’s 6 second contact transfer delay minimizes nuisance troubles due to brownouts and
power line failures. All other trouble conditions are transmitted off premise without delay. In addition to the
system trouble LED, IDC zones, IAC zones, and option modules light a unique trouble LED, further
identifying the cause of the problem.
To silence the trouble buzzer, press the TROUBLE SILENCE switch. The system trouble LED will light
steadily. New trouble conditions resound the trouble buzzer, and cause the system trouble LED to flash
slowly. Correction of the problem causing a trouble condition automatically returns the panel to the normal
mode, if no other faults exist. Certain critical internal faults and Class A trouble conditions latch the panel
into the trouble mode, requiring the panel to be reset before exiting the trouble mode. Module placement
trouble conditions remain active until the panel is reprogrammed.