6.4 Light-emitting diode (LED) constantly red, alarm
relay energized, 0-20 mA indicates alarm
Potential cause
Existing alarm condition.
Recommended action
Check cause of alarm.
Potential cause
Alarm latched.
Recommended action
Ensure the alarm latch is not enabled in the detector settings.
Potential cause
Faulty detector.
Recommended action
Re-power the detector.
6.5 No HART
®
communication, 0-20 mA shows 0 mA
Potential cause
No HART is available at 0 mA level.
Recommended action
For Fault mode, the default indication is 1 mA. Configure this to 0 mA.
Emerson does not recommend this when using a HART connection in order to
preserve the HART communication.
Troubleshooting Manual
September2023 00809-1400-4975
32 Emerson.com
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