Error Code List - Siemens LMV37.4 Series Basic Documentation

28 Error code list

Error
Diagnostic code
code
no
Comm
2 #
1
2
3 #
0
1
4
4 #
0
1
2
7 #
0
3
3...255
12 #
0
1
14 #
0
1
64
194/213
Building Technologies
HVAC Products
Meaning for LMV37.4... system
No communication between LMV37.4... basic unit
and AZL2...
No flame at the end of the safety time (TSA)
No flame at the end of safety time 1 (TSA1)
No flame at the end of safety time 2 (TSA2)
Air pressure failure
Air pressure off
Air pressure on
Air pressure on – start prevention
Extraneous light
Extraneous light during startup
Extraneous light during shutdown
Extraneous light during startup – start prevention
Loss of flame
Loss of flame
≤
Loss of flame (software version V02.00)
Loss of flame during TÜV test
Valve proving
Fuel valve 1 (V1) leaking
Fuel valve 2 (V2) leaking
POC
POC open
POC closed
POC open – prevention of startup
Basic documentation LMV37.4...
28 Error code list
Recommended measures
Check wiring for open-circuit / loose contact
Diagnostics covers the period of time from shutdown of the fuel valves to the point in time loss of
flame is detected (resolution 0.2 s → value 5 = 1 s)
Check to see if valve on the gas side is leaking
Check to see if there is an open-circuit
Check to see if valve on the burner side is leaking
Check to see if pressure switch for the valve proving is closed when gas pressure is present
Check wiring to see if there is a short-circuit
Check to see if the valve's closing contact is closed
Check wiring
Check to see if the valve's closing contact opens when valve is controlled
Check wiring to see if there is an open-circuit.
Check to see if the valve's closing contact is closed
CC1P7546en
01.12.2009