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Siemens Building Technologies Basic Documentation LMV5... CC1P7550en
HVAC Products 16 Addendum 1: List of fault status messages of LMV5... system 13.08.2004
Error
code
Diagnostic
code
Device Display Meaning for the LMV5x system Troubleshooting
A7 0D AZL Menu for Oil. Current Fuel is Gas
Fuel changeover from oil to gas Change to menu "GasSettings"
A7 0E AZL Menu for Gas. Current Fuel is Oil
Fuel changeover from gas to oil Change to menu "OilSettings"
A7 15 AZL Internal Fault AZL CAN queue fault
A7 16 AZL Internal Fault AZL CAN overflow fault
A7 17 AZL Internal Fault AZL CAN busoff
A7 18 AZL Internal Fault AZL CAN warning level
A7 1A AZL Internal Fault AZL EEPROM fault
A7 1B AZL No valid Parameter Backup Fault during copying of a parameter page Reset the unit, repeat backup restore if necessary
A7 1C AZL Internal Fault AZL Page in EEPROM was disrupted, has
been restored
A7 20 AZL Internal Fault AZL Display fault
A7 22 AZL Internal Fault AZL RTC is locked, permanently busy
A7 24 AZL Internal Fault AZL Buffer for page copies too small
A7 28 AZL Internal Fault AZL Time stamp could not be sent
A7 30 AZL Fault Communication eBUS Fault in connection with eBUS communi-
cation
A7 38 AZL Internal Fault AZL Interface mode could not be terminated
A7 40 AZL Communication AZL with PC tool
Parameterization fault PC tool. Disclosed
by key value check in AZL
A7 88 AZL Internal Fault AZL RAM fault with redundant inverse vari-
ables
A7 89 AZL Internal Fault AZL Program run fault, execution of program
code that will probably never be executed
A7 8A AZL Internal Fault AZL Unintentional watchdog reset
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