Siemens LMV27.100x2 Basic Documentation page 195

Error
Diagnostic code
code
21 #
0
1
64
22 OFF
#
S
0
1
3
5
17
19
21
23
65
67
69
71
81
83
85
87
23 #
0
1
2
Building Technologies
Meaning for the LMV27
Pressure switch-max / POC
Pressure switch-max : Max. gas / oil pressure exceeded

POC: POC open (software version V02.00)

POC close (software version V02.00)
POC open - start prevention (software version
Safety loop / burner flange
Safety loop / burner flange open
Safety loop / burner flange open - start prevention
Safety loop/burner flange, extraneous light – start prevention
Safety loop/burner flange, air pressure – start prevention
Safety loop/burner flange, combustion pressure – start
prevention
Safety loop/burner flange, extraneous light, combustion
pressure – start prevention
Safety loop/burner flange, air pressure, combustion pressure –
start prevention
Safety loop/burner flange, extraneous light, air pressure,
combustion pressure – start prevention
Safety loop/burner flange, POC – start prevention
Safety loop/burner flange, extraneous light, POC – start
prevention
Safety loop/burner flange, air pressure, POC – start prevention
Safety loop/burner flange, extraneous light, air pressure, POC
– start prevention
Safety loop/burner flange, combustion pressure, POC – start
prevention
Safety loop/burner flange, extraneous light, combustion
pressure, POC – start prevention
Safety loop/burner flange, air pressure, combustion pressure,
POC – start prevention
Safety loop/burner flange, extraneous light, air pressure,
combustion pressure, POC – start prevention
Gas pressure switch-min / heavy oil direct start
No minimum gas pressure
Gas shortage – start prevention
Heavy oil direct start
Basic Documentation LMV27...
28 Error code list (of all LMV2 / LMV3 types)
Recommended measures or causes
Check wiring to see if there is a line interruption.
POC: Check to see if the valve's closing contact is closed.
Check wiring
Check to see if the valve's closing contact opens when the valve is controlled
Check wiring

V02.00)
Check to see if the valve's closing contact opens when the valve is controlled
Check wiring to see if there is an open-circuit (X5-01)
Check wiring to see if there is an open-circuit (X5-01)
Check wiring to see if there is an open-circuit (X9-04)
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CC1P7541en
17.12.2018