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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
1C
01..3F
BU
Ignition Pos not defined
The diagnostic value is made up of the fol-
lowing faults or their combinations (the in-
dividual diagnostic codes are added up in
hexadecimal format)
1C
01
BU
Ignition Pos not defined
Ignition position of the air actuator
1C
02
BU
Ignition Pos not defined
Ignition position of the active fuel actuator
has not been parameterized
1C
04
BU
Ignition Pos not defined
Ignition position of auxiliary actuator 1 has
not been parameterized
1C
08
BU
Ignition Pos not defined
Ignition position of auxiliary actuator 2 has
not been parameterized
1C
10
BU
Ignition Pos not defined
Ignition position of VSD has not been pa-
rameterized
1C
20
BU
Ignition Pos not defined
Ignition position of auxiliary actuator 3 has
not been parameterized
1D
#
BU
Running time fault of actuators / VSD.
Check the relevant actuators to see if they are mechanically
overloaded. Check power supply to the actuators and their
fuses.
The actuator’s ramp must be smaller to or equal to the
ramp parameterized in the basic unit.
The parameterized ramp of the VSD must be smaller than
the ramp parameterized in the basic unit (recommendation:
20 %)
1D
01..3F
BU
Fault Running Time
The diagnostic value is made up of the fol-
lowing faults or their combinations (the in-
dividual diagnostic codes are added up in
hexadecimal format)
1D
01
BU
Fault Running Time Air Actuator
Running time fault of air actuator
1D
04
BU
Fault Running Time Aux Actuator Running time fault of auxiliary actuator 1
1D
08
BU
Fault Running Time Aux Actuator Running time fault of auxiliary actuator 2