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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
10
08
BU
Internal Fault Basic Unit
Pressure switch valve proving
10
09
BU
Internal Fault Basic Unit
Safety valve oil feedback
10
0A
BU
Internal Fault Basic Unit
Fuel valve 1 oil feedback
10
0B
BU
Internal Fault Basic Unit
Fuel valve 2 oil feedback
10
0C
BU
Internal Fault Basic Unit
Fuel valve 3 oil feedback
10
0D
BU
Internal Fault Basic Unit
Safety valve gas feedback
10
0E
BU
Internal Fault Basic Unit
Fuel valve 1 gas feedback
10
0F
BU
Internal Fault Basic Unit
Fuel valve 2 gas feedback
10
10
BU
Internal Fault Basic Unit
Fuel valve 3 gas feedback
10
11
BU
Internal Fault Basic Unit
Safety chain burner flange
10
12
BU
Internal Fault Basic Unit
Safety relay feedback
10
13
BU
Internal Fault Basic Unit
Pressure switch gas minimum
10
14
BU
Internal Fault Basic Unit
Pressure switch gas maximum
10
15
BU
Internal Fault Basic Unit
Ignition transformer feedback
10
16
BU
Internal Fault Basic Unit
Fan pressure switch
10
17
BU
Internal Fault Basic Unit
Start release oil
10
18
BU
Internal Fault Basic Unit
Heavy oil direct start
10
19
BU
Internal Fault Basic Unit
Load controller open
10
1A
BU
Internal Fault Basic Unit
Load controller closed
10
1B
BU
Internal Fault Basic Unit
Start release gas
11
01
BU
Internal Fault Basic Unit
Basic unit has detected a short-circuit in
the contact feedback network
*1)
15
#
SA
VSD module
Fault Positioning Actuator
or
Fan Speed not reached
Basic unit has detected a positioning er-
ror on 1 / several actuators (incl. the VSD
module)
Check if actuator is overloaded.
If fault occurs sporadically: Improve EMC.
If fault occurs constantly: Replace the relevant actuators (re-
fer to diagnostic code).
15
01..3F
SA
Fault Positioning Actuator
The diagnostic value is made up of the
following faults or their combinations (the
individual diagnostic codes are added up
in hexadecimal format)