Technical data

TTR31, TTR35 Trouble-shooting
Endress+Hauser 29
8 Trouble-shooting
8. 1 Errors and warnings
If an error in the device occurs, the colour of the status LED changes from green to red and the
digital display illumination 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 Explanation Remedy
E011 Device configuration faulty Reset device (→ Chap. 5.1.7)
E012 Error in measurement or medium
temperature outside specification
Check medium temperature, return
device to E+H where necessary
E019 Power supply outside specification Check operating voltage
E015
Memory error Return device to E+HE020
E021
E022 Power is only supplied to the device via
the communication interface
(measurement is deactivated)
Check operating voltage
E025 Switching contact 1 is not open although
it should be
Switching contact defective,
return device to E+H
E026 Switching contact 2 is not open although
it should be
Switching contact defective,
return device to E+H
E040 VCC (Controller voltage) is out of
working area
Return device to E+H
E042 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)
Check load.
Switch off analog output via
configuration, if it isn’t required,
→ Chap. 5.1.6.