Siemens LMV3 series Technical Instructions page 148

Error Diag.
Code Code
Note: Diagnostic codes are additive. If a diagnostic code appears that is not on this list, it is a combination of multiple diagnostic codes.
Any # Curve slope actuators
1 VSD: Curve too steep in terms of ramp speed
84
2 Fuel actuator: Curve too steep in terms of ramp rate
4 Air actuator: Curve too steep in terms of ramp rate
Any # Referencing error on actuators
0 Referencing error of fuel actuator
85
1 Referencing error of air actuator
128 Referencing error due to parameter change
Any # Error fuel actuator
0 Position error
86
1 Line interruption
8 Curve too steep in terms of ramp rate
Section 6
Meaning for the LMV3 System
The difference in position between two adjacent curve points is too large.
See diagnostic code for which actuator / VSD has positions that are too far
apart. For actuators, either increase the setting of parameter 544, or
decrease the distance between curve points. For VSD, either increase the
setting of parameter 544, decrease the setting of parameters 522 and 523,
decrease the distance between curve points, or decrease parameter 647.
All SQM33... actuators must travel outside of their 0-90° operating range
before starting up the burner in order to "reference" their position. This
fault means that the referencing was unsuccessful.
1) Check the setting of parameter 601 (fuel 0) and 608 (fuel 1). Index 00
sets the fuel actuator reference direction and index 01 sets the air actuator
reference direction.
2) Check to make sure the actuators are not binding when trying to
reference (ensure that overstroking below 0° or above 90° is possible).
3) Check the setting of parameter 613 (fuel 0) and 614 (fuel 1) to ensure
the actuator type is set correctly.
4) Make sure that the actuator's are plugged into the correct terminal on
the LMV3.
An error occurred pertaining to the fuel actuator. See diagnostic codes for
more information.
Verify that the valve connected to the fuel actuator is not bound. Ensure
that the torque requirements of the valve are less than the output of the
fuel actuator. If everything checks out okay, replace the SQM33 actuator.
Check the wiring between the fuel actuator and LMV3 terminal X54. Fix
the wiring error and reset the fault. If no fuel actuator exists, choose a fuel
train option (parameter 201/301) that does not require a fuel actuator.
See error code 84.
Page 14
Corrective Action
SCC Inc.