Common Problems Chart - Siemens SITRANS LUT400 Operating Instructions Manual

General Fault Codes
Code / LUI
Icon
131
132
133
11.4

Common Problems Chart

Symptom
Display blank, transduc-
er not pulsing
Display blank, transduc-
er is pulsing
Display active, trans-
ducer not pulsing
Reading fluctuates while
material level is still
SITRANS LUT400
Operating Instructions, 07/2019, A5E33329501-AC
Code / Meaning
PDM Icon
131 Parameter backup did not suc-
ceed.
Communication or file system
problems.
132 User input required.
Serial numbers mismatch.
133 Simulation Enabled.
Possible Cause
No power, incorrect power Check mains voltage at terminals;
Loose or disconnected
display cable
Incorrect transducer con-
nections or wiring;
Incorrect transducer se-
lection (or set to NO
Transducer);
Transducer has been
disabled through the soft-
ware
Material level is changing
Strong false echoes
Incorrect damping
Improper echo Algorithm
selection
High noise levels
Corrective Action
Repair required. Contact your
local Siemens representative.
Manually force recovery. (Set
parameter Backup Control
(3.3.2.) (Page 246).)
Simulation is active.
Enable or disable simulation via
LUI (Level Simulation Enable
(3.4.1.1.) (Page 258),Discrete
Input 1 (3.4.2.1.) (Page 259),
Discrete Input 2 (3.4.2.2.)
(Page 259)).
Action
Check fuse;
Check wiring connections;
Check wiring.
Reconnect display cable.
Verify terminal connections;
Check transducer field wiring;
Check any junction box connections;
Check that transducer is enabled (see Trans-
ducer Enable (3.3.1.) (Page 245))
Visually verify, if possible.
Determine source of false echoes; Relocate
transducer to avoid source.
Adjust damping. See Damping Filter (2.3.3.)
(Page 174).
Set algorithm to default. If no improvement,
try a different algorithm. See Algorithm
(2.12.2.1.) (Page 220).
Verify source and minimize. See Noise Prob-
lems (Page 276).
273