Carrier WeatherMaster Puron 48HC D17 Service And Maintenance Instructions page 31

• If 100% dirty, the sensor's Dirty LED turns on and the
controller's Trouble LED flashes continuously.
• If there is a wiring fault between a sensor and the control-
ler, the controller's Trouble LED turns on but not the sen-
sor's LED.
CONTROL OR INDICATOR
Magnetic test/reset switch
Alarm LED
Trouble LED
Dirty LED
Power LED
Table 7 — Detector Indicators
Resets the sensor when it is in the alarm or trouble state. Activates or tests the sensor when it is in the
normal state.
Indicates the sensor is in the alarm state.
Indicates the sensor is in the trouble state.
Indicates the amount of environmental compensation used by the sensor (flashing continuously = 100%)
Indicates the sensor is energized.
31
ALARM
Fig. 38 — Controller Assembly
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.
DESCRIPTION
TROUBLE
POWER
POWER
TROUBLE
ALARM
RESET
TEST/RESET
SWITCH