Siemens LMV5 Series Technical Instructions page 235

Error Diag.
Device Display
Code Code
Any #
3F
Internal Fault
17 01
Basic Unit
02
LMV5
03
Invalid Curve
18 Any #
Data
Any #
Actuator
01..2F
Air
01
Actuator
Internal Fault
19
Active Actuator
02 Fuel
Actuator
Aux 1
04
Actuator
Aux 2
08
Actuator
Aux 3
20
Actuator
Section 7
Meaning for the LMV5x System
Fault with Base Unit (LMV5)
(Internal) communication error of ELV
Detection of different data when making the data comparison
Timeout with program synchronization prior to data
transmission
Timeout with data transmission
CRC fault during data transmission
Corruption in the combustion curve data
Fault with Actuator
Basic unit (ratio control system) has detected a fault
when comparing potentiometer channels A and B. Diagnostic
code shows on which actuator the fault occurred. See
diagnostic code.
The diagnostic value is made up of the following faults or their
combinations (the individual diagnostic codes are added up in
hexadecimal format)
Fault occurred on the individual actuator (see diagnostic code)
when comparing potentiometer channels A and B
Page 27
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Corrective Action
If fault occurs sporadically, reduce electrical noise.
If fault occurs continuously, replace LMV5.
Values on curve should be within 0.0% - 100.0% for
load and VSD, 0.0° - 90.0° for actuators. If possible,
adjust curve values back into the valid range. If this
fault occurs on a unit that was functioning correctly after
commissioning, replace LMV5.
1) If fault occurs constantly: Replace actuator according
to diagnostic code. If a solid coupling was being used
on the defective actuator, replace with a flexible
coupling. After actuator(s) are replaced, make sure that
the actuators do not "hunt" during operation. This can
be done by adjusting parameter MinActuatorStep and
the PID loop.
SCC Inc.