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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
1D 10 BU Fault Running Time VSD Running time fault of VSD
1D 20 BU Fault Running Time Aux Actuator Running time fault of auxiliary actuator 3
1E # SA
VSD module
Special Pos not reached Basic unit has detected that 1 / several ac-
tuators (incl. VSD module) has / have not
reached the special position pertaining to
the Phase
Check the relevant actuators to see if they are mechanically
overloaded
1E 01..3F SA Special Pos not reached 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)
Check characteristics of VSD for linearity. Remove filters,
damping and delay members.
1E 01 SA Special Pos not reached Positioning fault of air actuator
1E 02 SA Special Pos not reached Positioning fault of fuel actuator
1E 04 SA Special Pos not reached Positioning fault of auxiliary actuator 1
1E 08 SA Special Pos not reached Positioning fault of auxiliary actuator 2
1E 10 VSD module
Special Pos not reached VSD has not reached the speed
1E 20 SA Special Pos not reached Positioning fault of auxiliary actuator 3
1F # VSD module Code for VSD Module Fault Basic unit has detected a fault in connec-
tion with the VSD module
If fault occurs sporadically: Check CAN bus wiring.
Improve EMC.
If fault occurs constantly: Replace the defective basic unit
1F 01 VSD module
Speed Acquisition faulty Internal VSD module test was not success-
ful
1F 02 VSD module
Wrong Direction of Rotation Fan rotates in the wrong direction Check to see if the motor’s direction of rotation is correct.
Check to see if the sensor disk on the motor is mounted the
correct way.
Change live conductor on the fan motor or check param-
eterized direction of rotation on the VSD and correct, if nec-
essary
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