Siemens LMV51.100B2 - Page 229

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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
99 --- All Internal Fault Basic Unit CAN is in bus off Check CAN cabling
*1)
9A --- All Internal Fault Basic Unit CAN warning level.
Fault probably occurred when connecting
or disconnecting a CAN bus user
Check CAN cabling
*1)
9B # All Internal Fault Basic Unit CAN queue overrun Check CAN cabling
*1)
9B 01 All Internal Fault Basic Unit Overrun of RX queue
9B 02 All Internal Fault Basic Unit Overrun of TX queue
A0 # SA Auxiliary actuator 3 has detected a fault
and reported it to the basic unit.
Type of fault: See diagnostic code
Check CAN cabling and terminators as specified
If fault occurs sporadically: Improve EMC
If fault occurs constantly: Replace defective actuator
A0 See A1 See A1 See A1 See A1 See A1
A1 # SA Air actuator has detected own fault and
reported it to the basic unit.
Type of fault: See diagnostic code
Check CAN cabling and terminators as specified
If fault occurs sporadically: Improve EMC
If fault occurs constantly: Replace defective actuator
A1 01 SA Internal Fault Air Actuator CRC fault during ROM test
A1 02 SA Internal Fault Air Actuator CRC fault during RAM test
A1 04 SA Internal Fault Air Actuator Fault during key value check
A1 05 SA Internal Fault Air Actuator Error code for time block overflow
A1 07 SA Internal Fault Air Actuator Sync fault or CRC fault
A1 08 SA Internal Fault Air Actuator Error code for main loop counter
A1 09 SA Internal Fault Air Actuator Fault during stack test
A1 0C SA Overtemperature Air Actuator Temperature warning and shutdown Check housing temperature (max. 60 °C)
A1 0D SA Internal Fault Air Actuator Actuator turns in the wrong direction