Siemens LMV51.100B2 - Page 230

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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
A1 0E SA Ramp time too short Air Actuator Actuator operates with too short a ramp
time, or with an angular rotation that is too
long for the ramp time
Recommendation:
1. Match ramp time to the slowest actuator in the system
(SQM48.4/6), OR
2. Reduce the actuator’s angular rotation between special
positions (load stages with multistage operation) based on
angular rotation
= 90° * ramp time / (90° running time of SA)
A1 10 SA Internal Fault Air Actuator Timeout during A/D conversion
A1 11 SA Internal Fault Air Actuator Fault during ADC test
A1 12 SA Internal Fault Air Actuator Fault during A/D conversion
A1 13 SA Position Fault Air Actuator Actuator is outside the valid angular rota-
tion (0-90°) or linearization data are faulty
Check to see if actuator is within the valid positioning range
(0-90°)
A1 15 SA Internal Fault Air Actuator CAN fault Check CAN wiring
A1 16 SA Internal Fault Air Actuator CRC fault of a parameter page Check CAN wiring
A1 17 SA Internal Fault Air Actuator Page too long open Reset the unit.
! Caution ! If fault occurred during parameterization: Check
the parameters changed last.
If fault cannot be rectified by the reset: Restore AZL… pa-
rameters.
Otherwise, replace defective basic unit
A1 18 SA Internal Fault Air Actuator Page disrupted Reset the unit.
! Caution ! If fault occurred during parameterization: Check
the parameters changed last.
If fault cannot be rectified by the reset: Restore AZL… pa-
rameters.
Otherwise, replace defective basic unit