Siemens LMV51 Series Basic Documentation page 243

Error Diagnostic Device
code code
A9 1B VSD module Internal Fault VSD Module
A9 1E VSD module Internal Fault VSD Module
A9 1F VSD module Internal Fault VSD Module
AB # O2M
AB 01 O2M
AB 02 O2M
AB 04 O2M
AB 05 O2M
AB 07 O2M
AB 08 O2M
AB 09 O2M
AB 0A O2M
AB 10 O2M
AB 12 O2M
Siemens Building Technologies Basic Documentation LMV5...
HVAC Products 16 Addendum 1: List of fault status messages of LMV5... system
Display
Fault when copying a parameter page
External plausibility fault. This type of fault
covers possible faults occurring due to in-
valid presettings in the drive commands.
In response, the presettings will be ig-
nored
Internal plausibility fault. This type of fault
detects faults that cannot practically oc-
cur...
Fault O2 Module The O2 module has detected own fault
and reported it to the basic unit
Internal Fault O2 Module CRC fault during ROM test
Internal Fault O2 Module CRC fault during RAM test
Internal Fault O2 Module Fault during key value check
Internal Fault O2 Module Error code for time block overflow
Internal Fault O2 Module Sync fault or CRC fault
Internal Fault O2 Module Error code for main loop counter
Internal Fault O2 Module Fault during stack test
Internal Fault O2 Module Feedback values invalid
Unplaus Value Nernst Voltage Nernst voltage outside the valid range
O2 Module
Unplaus Value Thermocouple Thermocouple voltage outside the valid
O2 Module range
Meaning for the LMV5x system Troubleshooting
Reset the unit.
! Caution ! If fault occurred during parameterization: Check
the parameters changed last.
If fault cannot be rectified by the reset: Restore AZL... pa-
rameters.
Otherwise, replace defective basic unit
Check the special positions for valid value range (0-100 %)
*1)
*2)
*2)
*2)
*2)
*2)
*2)
*2)
*2)
Check the connection (correct polarity, short-circuit)
Check connections (polarity, short-circuit, open-circuit).
Check power supply to the O2 module.
Check fuse F2 on the O2 module.
Check heating control on the QGO.
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CC1P7550en
13.08.2004