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Building Technologies Basic documentation LMV37.4... CC1P7546en
HVAC Products 18 Error history 01.12.2009
18 Error history
The LMV37.4... system provides an error history in which the last 25 errors are stored.
The first entry represents the current error state and can also be «error-free», refer to
Error code list.
Error
code
Diagnostic
code
Meaning for the LMV37.4... system
200 OFF # System error-free
18.1 Error classes
The errors are subdivided into error classes, depending on the severity of the switch-off
response. The current error shows all classes. Only the errors of the most important
classes are included in the history.
Error class Priority Meaning History
0 Highest Lockout X
1 Safety shutdown with software reset X
2 Undervoltage
3 Safety shutdown: Safety phase X
4 Safety shutdown: Start prevention
5 Safety shutdown: Shutdown X
6 Lowest Message without shutdown response
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