Troubleshooting; Error Messages And Warning Messages - Endress+Hauser Flowphant T DTT31 Operating Instructions Manual

Troubleshooting

8 Troubleshooting

8. 1 Error messages and warning messages

If an error occurs in the device, the color of the status LED changes from green to red and the
illumination of the digital display changes from white to red. A status LED flashing red and green
signals a warning. The display shows:
• E-code for errors
In the event of an error message, the measured value is uncertain.
• W-code for warnings
In the event of a warning, the measured value is reliable.
Code
E011
E012
E013
E019
E015
E020
E021
E022
E042
28
Explanation
Device configuration faulty
Error in measurement or medium temperature
outside specification
Sensor heating defective
Power supply outside specification
Memory error
Power is only supplied to the device via the
communication interface (measurement is deac-
tivated)
Output current can no longer be generated
(only for 4 to 20 mA output, e.g. load at analog
output too high or open analog output)
DTT31, DTT35
Remedy
Reset device (→ Chap. 5.1.8)
Check medium temperature, return
device to E+H where necessary
Return device to E+H
Check operating voltage
Return device to E+H
Check operating voltage
Check load; switch off analog output
Endress+Hauser