
248/301
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