IV-6
Status Indication
Possible Cause
Low Voltage
Power supply.
Detector power wiring.
COM 1
LON wiring on COM 1 side of detector.
Detector communication circuitry problem.
COM 2
LON wiring on COM 2 side of detector.
Detector communication circuitry problem.
IR Alarm
IR radiation source within view of detector.
UV Alarm
UV radiation source within view of detector.
Not communicating
Power supply or power wiring problem.
LON wiring problem.
Detector communication circuitry problem.
Wrong DIP switch address setting.
Inhibit active
Inhibit activated at OIS.
Unable to configure
Configuration problem. Repeat configuration.
Invalid Configuration
Configuration problem. Repeat configuration.
UV fault
Defect in UV module. (See extended status.)
IR fault
Defect in IR module. (See extended status.)
Power-up
Detector in power-up time delay.
Solution: Wait for detector to exit delay. Replace detector.
Auto configuration fault
Configuration problem. Repeat configuration.
General fault
Power supply failure.
Power or LON wiring problem.
Electronic failure in detector.
Fire alarm
UV and IR radiation detected.
UV
oi
fault
UV viewing window or
oi
ring dirty.
UV
oi
ring missing.
UV tube missing
Module missing. Install module.
Dirty or broken contacts on module.
UV 290 volt fault
Internal power problem. Replace detector terminal board.
IR
oi
fault
IR viewing window or
oi
ring dirty.
IR
oi
ring missing.
IR missing module
Module missing. Install module.
Dirty or broken contacts on module.
T0031B
Table IV–5—Status Conditions of UV/IR Detector
