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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
46 02 BU Programstop active Program stop "STOP_PREP2" in Phase
32 active
46 03 BU Programstop active Program stop "STOP_DR_IGN" in Phase
36 active
46 04 BU Programstop active Program stop "STOP_INTERV1" in
Phase 44 active
46 05 BU Programstop active Program stop "STOP_INTERV2" in
Phase 52 active
46 06 BU Programstop active Program stop "STOP_DR_POSTP" in
Phase 72 active
46 07 BU Programstop active Program stop "STOP_PREP2" in Phase
76 active
47
--- BU No Start Release for Gas Start release gas = off
48 --- BU 2 Flame Signals with 1 Detector
Operation
System parameterized for 1-detector op-
eration but 2 flame signals present
50
# BU Internal Fault Basic Unit Fault during key value check *1)
50 00..07 BU Internal Fault Basic Unit Number of time block in which the fault
was detected
51
# BU Internal Fault Basic Unit Time block overflow *1)
51 00..07 BU Internal Fault Basic Unit Number of time block in which the fault
was detected
52
# BU Internal Fault Basic Unit Stack error *1)
52 01 BU Internal Fault Basic Unit Stack overflow
52 02 BU Internal Fault Basic Unit Value dropped below preset minimum
limit
52 03 BU Internal Fault Basic Unit Test values in stack range exceeded
53 01 BU Internal Fault Basic Unit Faulty reset state has occurred *1)
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