Siemens LMV37.4 Series Basic Documentation page 223

Error
Diagnostic code
code
85 #
0
1
Bit 7

Valency 128
86 #
0
Bit 0
Valency 1
Bit 3

Valency 8
Bit 4

Valency 16
87 #
0
Bit 0
Building Technologies Division
Industry Sector
Meaning for the LMV37.4... system
Referencing error ones actuators
Referencing error of fuel actuator
Referencing error of air actuator
Referencing error due to parameter change
Error fuel actuator
Position error
Line interruption
Curve too steep in terms of ramp rate
Step deviation in comparison with last referencing
Error air actuator
Position error
Line interruption
Basic documentation LMV37.4...
29 Error code list
Remedy
SQM33.7) between 2 curve points in modulating mode.
2. Modulating operating ramp 64 seconds
The slope of the curve may be a maximum position change of 62° (30° for SQM33.6 and 18° for
SQM33.7) between 2 curve points in modulating mode.
Referencing of fuel actuator not successful.
Reference point could not be reached.
1. Check the setting of the actuator type (parameter 613.0 or 614)
2. Check to see if actuators have been mixed up
3. Check to see if actuator is locked or overloaded
Referencing of fuel actuator not successful
Reference point could not be reached.
1. Check the setting of the actuator type (parameter 613.1)
2. Check to see if actuators have been mixed up
3. Check to see if actuator is locked or overloaded
Parameterization of an actuator (e.g. the reference position) has been changed.
To trigger new referencing, this error is set
Target position could not be reached within the required tolerance band
 check to see if actuator is locked or overloaded
Line interruption detected at actuator's terminals
 check wiring (voltage X54 across pin 5 or 6 and pin 2 >0.5 V)
Check position differential between the curvepoints and the modulating operating ramp setting
(parameter 544).
1. Modulating operating ramp 32 seconds
The slope of the curve may be a maximum position change of 31° (15° for SQM33.6 and 9° for
SQM33.7) between 2 curve points in modulating mode.
2. Modulating operating ramp 64 seconds
The slope of the curve may be a maximum position change of 62° (30° for SQM33.6 and 18° for
SQM33.7) between 2 curve points in modulating mode.
Actuator was overloaded or mechanically twisted.
1. Check the setting of the actuator type (parameter 613.0 or 614)
2. Check to see if the actuator is blocked somewhere along its working range.
3. Check to see if the torque is sufficient for the application.
Target position could not be reached within the required tolerance band
 check to see if actuator is locked or overloaded
Line interruption detected at actuator's terminals
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CC1P7546en
20.09.2013