Siemens LMV5 Series Basic Documentation page 224

Error Diagnostic Device
code code
A7 18 AZL
A7 1A AZL
A7 1B AZL
A7 1C AZL
A7 20 AZL
A7 22 AZL
A7 24 AZL
A7 28 AZL
A7 30 AZL
A7 38 AZL
A7 40 AZL
A7 88 AZL
A7 89 AZL
A7 8A AZL
A9 # FuM
A9 01 FuM
A9 02 FuM
A9 04 FuM
A9 05 FuM
A9 07 FuM
A9 08 FuM
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Siemens Building Technologies Basic Documentation LMV51...
HVAC Products 15 Addendum 1: List of fault status messages of LMV51... system
Display
Internal Fault AZL CAN warning level
Internal Fault AZL EEPROM fault
No valid Parameter Backup Fault during copying of a parameter page Reset the unit, repeat backup restore if necessary
Internal Fault AZL Page in EEPROM was disrupted, has
been restored
Internal Fault AZL Display fault
Internal Fault AZL RTC is locked, permanently busy
Internal Fault AZL Buffer for page copies too small
Internal Fault AZL Time stamp could not be sent
Fault Communication eBUS Fault in connection with eBUS
communication
Internal Fault AZL Interface mode could not be terminated
Communication AZL with PC tool Parameterization fault PC tool. Disclosed
by key value check in AZL
Internal Fault AZL RAM fault with redundant inverse
variables
Internal Fault AZL Program run fault, execution of program
code that will probably never be executed
Internal Fault AZL Unintentional watchdog reset
Fault VSD Module VSD module has detected own fault and
reported it to the basic unit.
Type of fault: See diagnostic code
Internal Fault VSD Module CRC fault during ROM test
Internal Fault VSD Module CRC fault during RAM test
Internal Fault VSD Module Fault during key value check
Internal Fault VSD Module Error code for time block overflow
Internal Fault VSD Module Sync fault or CRC fault
Internal Fault VSD Module Error code for main loop counter
Meaning for the LMV5x system Troubleshooting
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CC1P7550en
01.10.2003