Siemens LMV51.100B2 - Page 248

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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
C5 04 ABE Version Conflict Software of the AZL5... too old Replace AZL5... or update its software
C5 08 SA Version Conflict Software of 1 or several actuators too old Replace actuator
C5 10 VSD module Version Conflict Software of VSD module too old Replace basic unit
C5 20 O2 Version Conflict Software of O2 module too old Replace O2 module
D1 # VSD module Fault Feedback VSD Module Basic unit has detected a wrong state of
the VSD module. Corresponds to the "8x"-
faults with the other CAN users
If fault occurs sporadically: Improve EMC.
If fault occurs constantly: Replace defective module
D1 01 VSD module Fault Feedback VSD Module CRC error
D1 02 VSD module Fault Feedback VSD Module Key error main loop counter
D1 03 VSD module Fault Feedback VSD Module No feedback for max. number
D3 # O2 Fault Feedback O2 Module Basic unit has detected a wrong stage of
the O2 module
Check CAN cabling and terminators as specified
If fault occurs sporadically: Improve EMC
If fault occurs constantly: Replace defective module
D3 01 O2 Fault Feedback O2 Module CRC error
D3 02 O2 Fault Feedback O2 Module Key error main loop counter
D3 03 O2 Fault Feedback O2 Module No feedback for max. number
E1 --- VSD module Fault Feedback VSD Module Basic unit has detected a ROM-CRC fault
in the VSD module when checking its
feedback signal
If fault occurs sporadically: Improve EMC
If fault occurs constantly: Replace defective module