Siemens LMV5 Quick Start Manual page 140

Error Diag.
Device Display
code code
Internal Fault
01 01 LMV5
Basic Unit
Any #
01
02
02
03
04
05
06
07
Any #
01 Internal Fault
LMV5
Basic Unit
02
03
05
10
03
11
12
40
41
42
43
44
04
LMV5 QSG Rev 4
Meaning for the LMV5x system
Fault with Base Unit (LMV5)
ROM error
RAM error
RAM error in register bank 0 (LMV51...)
RAM error in IDATA area (LMV51...)
RAM error in XDATA area (LMV51...)
RAM error of variables used
RAM error variable consistency
RAM error reading back test pattern
Error RAM test code run
Error in connection with data comparison (internal
communication) between µC1 and µC2
TimeOut during program run synchronization prior to data
transmission
TimeOut during data transmission
CRC error during data transmission
TimeOut during program run synchronization with initialization
Error counter "Flame intensity outside tolerance" has elapsed
Error counter "Target phase unequal" has elapsed
Error counter "Reset-lockout input unequal" has elapsed
Fuel train unequal
Relay control word unequal
ROM-CRC signature unequal
Phase unequal
(Key + main loop counter) unequal
Unsuccessful synchronization of the 2 µCs
Sec 5 Pg 14
Corrective action
Electromagnetic compatibility (EMC)
Improving EMC is avoiding electrical interference effects
Typically this means:
1) Check grounding (most often the cause)
2) Check shielding
3) Check for loose connections
4) Check for wiring that is too close to high voltage
If fault occurs sporadically improve EMC.
If fault occurs continously, replace LMV5
Check flame detector signal. If ok, and fault re-occurs,
replace LMV5
If fault occurs continously, replace LMV5
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