Diagnosing and troubleshooting
10.3 Operation troubleshooting
SITRANS LR250 with FOUNDATION FIELDBUS
176
Operating Instructions, 09/2021, A5E32221411-AH
Code/
Icon
Meaning
Corrective Action
S: 114
Addr Bus
Hardware problem. If fault persists contact your local Sie-
mens representative.
S: 115
Spur SW
Hardware problem. If fault persists contact your local Sie-
mens representative.
S: 116
Spur HW
Hardware problem. If fault persists contact your local Sie-
mens representative.
S: 117
SV High
Verify TB not in simulation mode. If fault persists contact
your local Siemens representative.
S: 118
SV Low
Verify TB not in simulation mode. If fault persists contact
your local Siemens representative.
10.3
Operation troubleshooting
Operating symptoms, probable causes, and resolutions.
Symptom
Cause
Action
Display shows
level or target is out of range
•
check specifications
•
check
Low Calibration Pt. (2.3.7.1.)
•
increase
Confidence (2.5.9.1.)
Display shows
material build-up on antenna
•
clean the antenna
•
re-locate SITRANS LR250
Display shows
location or aiming:
•
poor installation
•
flange not level
•
Auto False Echo Suppression
may be incorrectly applied
•
check to ensure nozzle is vertical
•
ensure end of antenna protrudes from end of nozzle
•
review Auto False Echo Suppression (Page 238)
•
ensure Auto False Echo Suppression Range is set correctly
Display shows
antenna malfunction:
•
temperature too high
•
physical damage
•
excessive foam
•
multiple echoes
•
check temperature in
Maximum Value (3.3.2.)
•
use foam deflector or stillpipe
•
relocate
•
use a defoamer
•
set
Algorithm (2.5.7.1.)
to t
F
(trueFirst echo)