Troubleshooting Prosonic T
36 Endress+Hauser
7Troubleshooting
7.1 System error messages
7.1.1 Current error
Errors which the instrument detects during commissioning or operation are displayed:
•In the "measured value" (000) function
•In the "diagnostics" (0A) function group in the "present error" (0A0) function
Only the highest priority error is displayed; in the case of multiple errors, you can scroll between
the different error messages by pressing + or -.
7.1.2 Last error
The last error is displayed in the "diagnostics" (0A) function group in the "previous error"
(0A1) function. This display can be deleted in the "clear last error" (0A2) function.
7.1.3 Types of error
7.1.4 Error codes
Type of error Symbol Meaning
Alarm (A)
continuous
The output signal assumes a value which can be set using the "output
on alarm" (010) function:
• MAX: 110%, 22mA
• MIN: -10%, 3.8mA
• Hold: last value is on hold
• User-specific value
Warning (W)
flashing
The device continues measurement. An error message is displayed.
Alarm/Warning (E) You can define whether the error should behave as an alarm or as a warning.
Code Error description Action
A102
A110
A152
A160
checksum error Reset;
If alarm still present after reset, replace electronics
A106 downloading Wait; Message disappears after load sequence
A111
A113
A114
A115
A121
A125
A155
A164
A171
electronics defect Reset;
Check system for EMC, improve as necessary
If alarm still present after reset, replace electronics
A116 download error Check connection; Restart download
A231 sensor defect Check connection, if necessary replace HF module or electronics
A281 interruption temperature
sensor
Exchange sensor
A502 Sensor type not detected Exchange sensor and/or electronics
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