Siemens LMV5 Series Basic Documentation page 197

Error Diagnostic Device
code code
17 - BU
17 3F BU
17 01 BU
17 02 BU
17 03 BU
18 - BU
19 # SA
19 01..2F SA
19 01 SA
19 02 SA
Siemens Building Technologies Basic Documentation LMV51...
HVAC Products 15 Addendum 1: List of fault status messages of LMV51... system
Display
Internal Fault Basic Unit (Internal) communication error of ELV
Internal Fault Basic Unit Detection of different data when making
the data comparison
Internal Fault Basic Unit Timeout with program synchronization
prior to data transmission
Internal Fault Basic Unit Timeout with data transmission
Internal Fault Basic Unit CRC fault during data transmission
Invalid Curve Data Invalid curve data
Internal Fault 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
Internal Fault Actuator The diagnostic value is made up of the
following faults or their combinations (the
individual diagnostic codes are added up
in hexadecimal format)
Internal Fault Actuator Fault occurred on the air actuator when
comparing potentiometer channels A and
B
Internal Fault Actuator Fault occurred on the active fuel actuator
when comparing potentiometer channels A
and B
Meaning for the LMV5x system Troubleshooting
*1)
Checking the curve data for invalid entries:
Valid load range: 0.0 % - 100.0 %
Valid positioning range: 0.0° - 90.0°
Valid speed range: 0.0 % - 100 %
In the case of a deviation from the valid range when
commissioning the unit: Readjustment to the valid value
range.
If fault occurs after the unit has previously worked correctly:
Replace defective basic unit
If fault occurs sporadically: Improve EMC.
If fault occurs constantly: Replace actuator (see diagnostic
code)
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CC1P7550en
01.10.2003