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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
71 --- BU Manual Lockout Lockout was made manually via contact Lockout via the external reset / lockout contact is negated
by new actuation
72 # BU Internal Fault Basic Unit Plausibility fault in connection with fault
entry
*1)
72
01 BU Internal Fault Basic Unit Fault in "seterr()"
72
02 BU Internal Fault Basic Unit Fault in "seterr()"
72
03 BU Internal Fault Basic Unit Fault in "error_manager()"
72
04 BU Internal Fault Basic Unit Fault in "storeerr()"
80 # SA Fault Feedback Aux Actuator 3 Basic unit has detected wrong state of
the air actuator
Check CAN cabling and terminators as specified
If fault occurs sporadically: Improve EMC
If fault occurs constantly: Replace defective actuator
80
01 SA Fault Feedback Aux Actuator 3 CRC error
80
02 SA Fault Feedback Aux Actuator 3 Key error main loop counter
80
03 SA Fault Feedback Aux Actuator 3 No feedback for max. number
81 # SA Fault Feedback Air Actuator Basic unit has detected wrong state of
the air actuator
Check CAN cabling and terminators as specified
If fault occurs sporadically: Improve EMC
If fault occurs constantly: Replace defective actuator
81
01 SA Fault Feedback Air Actuator CRC error
81
02 SA Fault Feedback Air Actuator Key error main loop counter
81
03 SA Fault Feedback Air Actuator No feedback for max. number
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