33
An internal sensor fault is detected upon entering the trouble state:
• The contacts on the controller’s supervisory relay switch
positions. (See Fig. 49.)
• If a sensor trouble, the sensor’s Trouble LED the control
-
ler’s Trouble LED turn on.
• If 100% dirty, the sensor’s Dirty LED turns on and the
controller’s Trouble LED flashes continuously.
• If a wiring fault between a sensor and the controller, the
controller’s Trouble LED turns on but not the sensor’s.
NOTE: All troubles are latched by the duct smoke detector. The
trouble condition must be cleared and then the duct smoke detec
-
tor must be reset in order to restore it to the normal state.
Fig. 49 —
Controller Assembly
Resetting Alarm and Trouble Condition Trips
Manual reset is required to restore smoke detector systems to Nor
-
mal 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.
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 Trou
-
ble 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 con
-
troller. If a sensor’s Trouble LED is on, determine the cause
and make the necessary repairs.
2. Check the wiring between the sensor and the controller. If
wiring is loose or missing, repair or replace as required.
CONTROLLER’S TROUBLE LED IS FLASHING
1. One or both of the sensors is 100% dirty.
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
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, secure 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, determine why
the controller does not have power and make the necessary
repairs.
2. Check the wiring between the sensor and the controller. 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 controller 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 repair wiring as
required.
REMOTE TEST/RESET STATION’S TROUBLE LED DOES
NOT FLASH WHEN PERFORMING A DIRTY TEST, BUT
THE CONTROLLER’S TROUBLE LED DOES
1. Verify that the remote test/station is wired as shown in
Fig. 47. Repair or replace loose or missing wiring.
2. Configure the sensor dirty test to activate the controller’s
supervision relay. See “Changing Sensor Dirty Test
Operation.”
SENSOR’S TROUBLE LED IS ON, BUT THE CONTROL
-
LER’S TROUBLE LED IS OFF
Remove JP1 on the controller.
PremierLink™ Control
For details on operating units equipped with the factory-installed
PremierLink controller option, refer to the
PremierLink Retrofit
Rooftop Controller Version 3.x Installation, Start-Up, and Config
-
uration Instructions
manual.
RTU Open Control System
For details on operating units equipped with the factory-installed
RTU Open controller, refer to the
“Factory-Installed RTU Open
Multi-Protocol Controller Control, Start-Up, Operation and Trou
-
bleshooting”
manual.
ECONOMI$ER SYSTEMS
The 50TCQ units may be equipped with a factory-installed or ac
-
cessory (field-installed) EconoMi$er system. Three types are
available: with a logic control system (EconoMi$er IV and
EconoMi$er X) and without a control system (EconoMi$er2). See
Fig. 50-52 for component locations on each type. The W7212
Table 12 —
Detector Indicators
CONTROL OR INDICATOR
DESCRIPTION
Magnetic test/reset switch
Resets the sensor when it is in the alarm or trouble state. Activates or tests the sensor when it is in the normal state.
Alarm LED
Indicates the sensor is in the alarm state.
Trouble LED
Indicates the sensor is in the trouble state.
Dirty LED
Indicates the amount of environmental compensation used by the sensor (flashing continuously = 100%)
Power LED
Indicates the sensor is energized.
ALARM
POWER
TEST/RESET
SWITCH
TROUBLE
RESET
ALARM
TROUBLE
POWER
IMPORTANT: Any economizer that meets the economizer re
-
quirements as laid out in California’s Title 24 mandatory sec
-
tion 120.2 (fault detection and diagnostics) and/or prescriptive
section 140.4 (life-cycle tests, damper leakage, 5 year warranty,
sensor accuracy, etc), will have a label on the economizer. Any
economizer without this label does not meet California’s
Title 24. The five-year limited parts warranty referred to in sec
-
tion 140.4 only applies to factory installed economizers. Please
refer to the economizer on the unit.
Summary of Contents for WeatherMaker 50TCQ 17-24 Series
Page 35: ...35 Fig 53 RTU Open Overlay for Economizer Wiring ...
Page 36: ...36 Fig 54 VFD Overlay for W2770 Controller Wiring ...
Page 68: ...68 Fig B 50TCQD17 24 Control Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Page 69: ...69 Fig C 50TCQD17 24 Power Wiring Diagram 208 230 3 60 Units APPENDIX D WIRING DIAGRAMS ...
Page 70: ...70 Fig D 50TCQD17 24 Power Wiring Diagram 460 3 60 575 3 60 Units APPENDIX D WIRING DIAGRAMS ...
Page 71: ...71 Fig E RTU Open Overlay APPENDIX D WIRING DIAGRAMS ...
Page 72: ...72 Fig F PremierLink Overlay APPENDIX D WIRING DIAGRAMS ...