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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
15 01 SA Fault Positioning Actuator Positioning fault air actuator
15 02 SA Fault Positioning Actuator Positioning fault fuel actuator
15 04 SA Fault Positioning Actuator Positioning fault auxiliary actuator 1
15 08 SA Fault Positioning Actuator Positioning fault auxiliary actuator 2
15 10 VSD module
Fan Speed not reached The fan in combination with the VSD has
not reached the required speed
Check characteristics of VSD for linearity. Remove filters,
damping and delay members
15 20 SA Fault Positioning Actuator Positioning fault auxiliary actuator 3
16 # BU Internal Fault Basic Unit Basic unit has detected a plausibility fault
in the ratio control system.
The diagnostic code describes the cause
of the fault.
16 00 BU Internal Fault Basic Unit Ratio curve of the air actuator is not fully
defined
Check the curve to see if correct values have been entered
for the air actuator. Readjust the ratio curve, if required
16 01 BU Internal Fault Basic Unit Ratio curve of the fuel actuator is not fully
defined
Check the curve to see if correct values have been entered
for the fuel actuator. Readjust the ratio curve, if required
16 02 BU Internal Fault Basic Unit Ratio curve of auxiliary actuator 1 is not
fully defined
Check the curve to see if correct values have been entered
for auxiliary actuator 1. Readjust the ratio curve, if required
16 03 BU Internal Fault Basic Unit Ratio curve of auxiliary actuator 2 is not
fully defined
Check the curve to see if correct values have been entered
for auxiliary actuator 2. Readjust the ratio curve, if required
16 04 BU Internal Fault Basic Unit Ratio curve of auxiliary actuator 3 is not
fullydefined
Check the curve to see if correct values have been entered
for auxiliary actuator 3. Readjust the ratio curve, if required
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