Siemens LMV5 Series Basic Documentation page 225

Error Diagnostic Device
code code
A9 09 FuM
A9 0A FuM
A9 0C FuM
A9 0D FuM
A9 0E FuM
A9 15 FuM
A9 16 FuM
Siemens Building Technologies Basic Documentation LMV51...
HVAC Products 15 Addendum 1: List of fault status messages of LMV51... system
Display
Internal Fault VSD Module Fault during stack test
Internal Fault VSD Module Max IRQ speed reached
Alarm from VSD VSD reports a fault to the VSD module
Control Range Limitation VSD VSD module could not offset speed
Module differential within its control limits
Internal Fault VSD Module Fault during the speed calculation test
Internal Fault VSD Module CAN bus fault, disturbed CAN bus
transmissions
Internal Fault VSD Module CRC fault of a parameter page
Meaning for the LMV5x system Troubleshooting
*1)
Possibly interference on the line to the speed sensor, check
cable routing, use shielding
*1)
Fault has been triggered by the VSD.
Read VSDs error code.
Check VSD settings (ramps, motor settings), increase ramp
time on VSD and basic unit, if necessary.
Check combination VSD / motor size
Check to see if the current interfaces of VSD and VSD
module use the same setting (0/4...20 mA).
Standardize the speed.
!! Note !!
After standardizing the speed -> check setting of
combustion mixture !
*1)
If fault occurs sporadically: Check CAN bus wiring.
Improve EMC.
Check terminating resistors and correct, if necessary
Reset the unit.
! Caution ! If fault occurred during parameterization: Check
the parameters changed last.
If fault cannot be rectified by the reset: Restore AZL...
parameters.
Otherwise, replace defective basic unit
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CC1P7550en
01.10.2003