Siemens LMV37.4 Series - 29 Error Code List (All LMV2 Types; LMV3 Types)

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Building Technologies Basic documentation LMV37.4... CC1P7546en
29 Error code list (all LMV2 types / LMV3 types) 17.12.2018
29 Error code list (all LMV2 types / LMV3 types)
Error
code
Diagnostic code Meaning for the LMV37.4 Recommended measures or causes
no Comm No communication between LMV37.4 and AZL2 Check wiring for line interruption/loose contact
2 # No flame at the end of first safety time
1 No flame at the end of first safety time
2 No flame at the end of second safety time
4
No flame at the end of first safety time (software version

V02.00)
3 # Air pressure failure
0 Air pressure off
1 Air pressure on
2 Evaluation of air pressure
Correct the setting of parameter 235 or 335
(Deactivation of the air pressure check in operation only allowed in pneumatic operation!)
4 Air pressure on – prevention of startup
20 Air pressure, combustion pressure – start prevention
68 Air pressure, POC – start prevention
84 Air pressure, combustion pressure, POC – start prevention
4 # Extraneous light
0 Extraneous light during startup
1 Extraneous light during shutdown
2 Extraneous light during startup – prevention of startup
6 Extraneous light during startup, air pressure – start prevention
18
Extraneous light during startup, combustion pressure – start
prevention
24
Extraneous light during startup, air pressure, combustion
pressure – start prevention
66 Extraneous light during startup, POC – start prevention
70
Extraneous light during startup, air pressure, POC – start
prevention
82
Extraneous light during startup, combustion pressure, POC –
start prevention
86
Extraneous light during startup, air pressure, combustion
pressure, POC – start prevention
7 # Loss of flame
0 Loss of flame
3 Loss of flame (software version  V02.00)