Siemens SITRANS T Series - Diagnostic Messages

11.2 Diagnostic messages
The following table shows the IDs of diagnostic messages and possible causes and instructions
for corrective actions.
ID Symbols Message Cause/Remedy
8A Input 1 error A sensor error (broken/shorted sensor) is detected at Input 1.
Unplug and reconnect the sensor cable.
If the problem persists, replace the sensor.
8B Input 2 error A sensor error (broken/shorted sensor) is detected at Input 2.
Unplug and reconnect the sensor cable.
If the problem persists, replace the sensor.
8C Input 1 CJC error A sensor error (broken/shorted sensor) is detected at the cold junction
compensation measurement used for Input 1.
Unplug and reconnect the sensor cable.
If the problem persists, replace the sensor.
8D Input 2 CJC A sensor error (broken/shorted sensor) is detected at the cold junction
compensation measurement used for Input 2.
Unplug and reconnect the sensor cable.
If the problem persists, replace the sensor.
8E Drift detected The di󹪜erence of the measured results between Input 1 and Input 2
lies above the con󹪝gured maximum limit.
Unplug and reconnect the sensor cable.
If the problem persists, replace the sensor.
8F Backup enabled A sensor error is detected, the backup sensor is in use.
Unplug and reconnect the sensor cable.
Check if the sensor is operated out of speci󹪝ed limits.
If the problem persists, replace the sensor.
8G Backup error A sensor error is detected at the backup sensor, no backup is available.
Unplug and reconnect the sensor cable.
Check if the sensor is operated out of speci󹪝ed limits.
If the problem persists, replace the sensor.
8H Drift detected, reference volt‐
age FVR
A critical measurement error was detected at the internal voltage
reference.
Reconnect or repair the sensor.
If the problem persists, contact Technical Support.
Diagnostics and troubleshooting
11.2 Diagnostic messages
SITRANS TH100/TH320/TH420/TR320/TR420/TF320/TF420 with 4 to 20 mA/HART
188 Operating Instructions, 05/2020, A5E41864807-AB