7.6.1 Module Displays “Starting” for more than 1 Hour
1. Make sure the sensor is placed in an ambient room temperature environment.
2. Power cycle the sensor.
3. Ensure that the sensor is not exposed to gas of interest during warm-up.
7.6.2 Module Does Not Display the Correct %PPM
1. Power cycle the unit.
2. Recalibrate the sensor.
7.6.3 Display Shows ‘F’ – Sensor Missing or Bad Sensor
1. Power down the unit.
2. Open the enclosure and unplug the sensor assembly from the transmitter board.
3. Plug the sensor back into the transmitter board carefully and ensure a secure fit.
4. Check all other connections.
5. Power up the unit.
7.6.4 Module Shows “***Calibration Required***”
Calibrate the module.
7.6.5 Display Shows “H” or “L”
This means the local high or low alarm is active.
7.6.6 Display Shows “M” – Not Calibrated
Calibrate the module.
7.6.7 Display Shows “C” – Calibration Mode
Complete calibration and exit to operating mode.
7.6.8 Display Shows “S” – Sentry Connection
Check connections with Sentry Controller
7.6.9 Diagnostic LEDs
1 = 1 Hz Heartbeat normal, 2 Hz Panic Error
2 = Computation process
3 = 1 Hz Heartbeat normal
4 = HART or Sentry comms activity
38 SMC 5100-XX-IT Toxic Gas Detector Module
7 Service US
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