Bryant 548J Service And Maintenance Instructions page 32

Alarm
Fig. 45 - - Controller Assembly
NOTE: All troubles are latched by the duct smoke
detector. The trouble condition must be cleared and then
the duct smoke detector must be reset in order to restore it
to the normal state.
Resetting Alarm and Trouble Condition Trips:
Manual reset is required to restore smoke detector systems
to Normal operation. For installations using two sensors,
the duct smoke detector does not differentiate which
sensor signals an alarm or trouble condition. Check each
sensor for Alarm or Trouble status (indicated by LED).
Clear the condition that has generated the trip at this
sensor. Then reset the sensor by pressing and holding the
reset button (on the side) for 2 seconds. Verify that the
sensor's Alarm and Trouble LEDs are now off. At the
controller, clear its Alarm or Trouble state by pressing and
holding the manual reset button (on the front cover) for 2
seconds. Verify that the controller's Alarm and Trouble
LEDs are now off. Replace all panels.
Troubleshooting
Controller's Trouble LED is On
1. Check the Trouble LED on each sensor connected to
the controller. If a sensor's Trouble LED is on, de-
termine the cause and make the necessary repairs.
2. Check the wiring between the sensor and the control-
ler. If wiring is loose or missing, repair or replace as
required.
Controller's Trouble LED is Flashing
Trouble
1. One or both of the sensors is 100% dirty.
Power
2. Determine which Dirty LED is flashing then clean
that sensor assembly as described in the detector
cleaning section.
Sensor's Trouble LED is On
Test/reset
switch
1. Check the sensor's Dirty LED. If it is flashing, the
sensor is dirty and must be cleaned.
2. Check the sensor's cover. If it is loose or missing, se-
C07298
cure the cover to the sensor housing.
3. Replace sensor assembly.
Sensor's Power LED is Off
1. Check the controller's Power LED. If it is off, de-
termine why the controller does not have power and
make the necessary repairs.
2. Check the wiring between the sensor and the control-
ler. If wiring is loose or missing, repair or replace as
required.
Controller's Power LED is Off
1. Make sure the circuit supplying power to the control-
ler is operational. If not, make sure JP2 and JP3 are
set correctly on the controller before applying power.
2. Verify that power is applied to the controller's supply
input terminals. If power is not present, replace or re-
pair wiring as required.
Remote Test/Reset Station's Trouble LED Does Not
flash When Performing a Dirty Test, But the Control-
ler's Trouble LED Does
1. Verify that the remote test/station is wired as shown
in Fig. 43. Repair or replace loose or missing wiring.
2. Configure the sensor dirty test to activate the control-
ler's supervision relay. See "To Configure the Dirty
Sensor Test Operation" for details.
Sensor's Trouble LED is On, But the Controller's
Trouble LED is OFF
Remove JP1 on the controller.
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