Siemens LMV5 Series Basic Documentation page 231

Error Diagnostic Device
code code
C5 # #
C5 01..2F #
C5 01 BU
C5 02 LC
C5 04 ABE
C5 08 SA
C5 10 FuM
C5 20 O2
D1 # FuM
D1 01 FuM
D1 02 FuM
D1 03 FuM
Siemens Building Technologies Basic Documentation LMV51...
HVAC Products 15 Addendum 1: List of fault status messages of LMV51... system
Display
Version Conflict When comparing the versions of the
individual units, the AZL5... has detected
old versions
Version Conflict The diagnostic value is made up of the
following faults or their combinations (the
individual diagnostic codes are added up
in hexadecimal format)
Version Conflict Software of the basic unit too old
Version Conflict Software of the load controller too old
Version Conflict Software of the AZL5... too old
Version Conflict Software of 1 or several actuators too old Replace actuator
Version Conflict Software of VSD module too old
Version Conflict Software of O2 module too old
Fault Feedback VSD Module Basic unit has detected a wrong state of
the VSD module. Corresponds to the "8x"-
faults with the other CAN users
Fault Feedback VSD Module
CRC error
Fault Feedback VSD Module
Key error main loop counter
Fault Feedback VSD Module
No feedback for max. number
Meaning for the LMV5x system Troubleshooting
Before replacing any units, start the system and wait about
1 minute (until, after entering the parameter level, the
display "Parameters will be updated" disappears).
Then, make a reset. Replace the unit only if the fault
message does not disappear.
Replace the relevant units by new versions
Replace basic unit
Replace basic unit
Replace AZL5... or update its software
Replace basic unit
Replace O2 module
If fault occurs sporadically: Improve EMC.
If fault occurs constantly: Replace defective module
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CC1P7550en
01.10.2003