
223/301
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
61
#
BU
Internal Fault Basic Unit
Fault in connection with EEPROM ini-
tialization
Reset the unit.
! Caution ! If fault occurred during parameterization: Check
the parameters changed last.
If fault cannot be rectified by the reset: Restore AZL… pa-
rameters.
Otherwise, replace defective basic unit
61
01
BU
Internal Fault Basic Unit
Fault during initialization of EEPROM
61
02
BU
Internal Fault Basic Unit
Number of write attempts exceeded
61
10
BU
Internal Fault Basic Unit
EEPROM was busy when accessed
61
11
BU
Internal Fault Basic Unit
Comparison of EEPROM and RAM area
revealed dissimilarity
61
12
BU
Internal Fault Basic Unit
Page area of EEPROM exceeded during
write process
61
13
BU
Internal Fault Basic Unit
Access conflict µC1 <> µC2 (aritation)
61
20
BU
Internal Fault Basic Unit
Fault when calling the "ParAccess()"
function
61
21
BU
Internal Fault Basic Unit
Written EEPROM block unequal RAM
block
61
22
BU
Internal Fault Basic Unit
CRC of page is faulty
61
23
BU
Internal Fault Basic Unit
Matching fault µC1, µC2 when saving the
error page
70
#
BU
Internal Fault Basic Unit
Fault during restoring of lockout informa-
tion
*1)
70
01
BU
Internal Fault Basic Unit
When reading from EEPROM (initializa-
tion)
70
02
BU
Internal Fault Basic Unit
When test writing in the initialization
70
03
BU
Internal Fault Basic Unit
No write access to error page in init.
70
04
BU
Internal Fault Basic Unit
Rep. counter "Internal fault" has elapsed