Siemens 7ML5431 - Page 170

Diagnosing and troubleshooting
10.3 General fault codes
SITRANS LR250 with mA/HART
170 Operating Instructions, 10/2019, A5E32220602-AG
Code/
Icon
Meaning
Corrective Action
S: 11
Internal temperature sensor failure. Repair required: contact your local Siemens representa-
tive.
S: 12
Internal temperature of device has exceeded
specifications: it is operating outside its tem-
perature range.
• Relocate device and/or lower process temperature
enough to cool device.
• Inspect for heat-related damage and contact your
local Siemens representative if repair is required.
• Fault code will persist until a manual reset is per-
formed using SIMATIC PDM or the LCD interface.
S: 17
Calibration interval as defined in Maintenance
Required Limit has expired.
Perform calibration.
S: 18
Calibration interval as defined in Maintenance
Demanded Limit has expired.
Perform calibration.
S: 28
* Internal device failure caused by a RAM
memory error.
Repair required: contact your local Siemens representa-
tive.
S: 29
* EEPROM damaged. Repair required: contact your local Siemens representa-
tive
S: 31
* Flash error. Repair required: contact your local Siemens representa-
tive
S: 33
* Factory calibration for the internal temperature
sensor has been lost.
Repair required: contact your local Siemens representa-
tive
S: 34
* Factory calibration for the device has been lost. Repair required: contact your local Siemens representa-
tive
S: 35
* Factory calibration for the device has been lost. Repair required: contact your local Siemens representa-
tive
S: 36
* Unable to start microwave module. Repair required: contact your local Siemens representa-
tive