Operating Instructions

Table Of Contents
Code/
Icon
Meaning Corrective Action
S: 18 Calibration interval as defined in Maintenance
Demanded Limit has expired.
Perform calibration.
S: 28 * Internal device failure caused by a RAM memo‐
ry error.
Repair required: contact your local Siemens representative.
S: 29 * EEPROM damaged. Repair required: contact your local Siemens representative
S: 31 * Flash error. Repair required: contact your local Siemens representative
S: 33 * Factory calibration for the internal temperature
sensor has been lost.
Repair required: contact your local Siemens representative
S: 34 * Factory calibration for the device has been lost. Repair required: contact your local Siemens representative
S: 35 * Factory calibration for the device has been lost. Repair required: contact your local Siemens representative
S: 36 * Unable to start microwave module. Repair required: contact your local Siemens representative
S: 37 * Measurement hardware problem. Repair required: contact your local Siemens representative
S: 38 * Failure in the device electronics. Repair required: contact your local Siemens representative
S: 43 * Factory calibration for the radar receiver has
been lost.
Repair required: contact your local Siemens representative.
S: 45 * No valid boot program detected: firmware cor‐
rupt
Repair required: contact your local Siemens representative.
S: 48 * User configuration is invalid. One or more of pa‐
rameters: Low Calibration Point, High Calibra‐
tion Point, Volume breakpoints, and/or Auto
False-Echo Suppression, are set to invalid val‐
ues.
Reconfigure the unit.
Ensure the difference between High Calibration Point
and Low Calibration Point is not less than or equal to
zero; do a Master Reset.
Diagnosing and troubleshooting
10.3 General fault codes
SITRANS LR250 with mA/HART
162 Operating Instructions, 10/2019, A5E32220602-AG