Siemens LMV3 series User Manual

Error
Code
Diag.
Code
Meaning for the LMV3 System Corrective Action
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 # Gas pressure switch-min (Pmin) / heavy oil direct start
A low gas pressure or heavy oil direct start fault occurred. See diagnostic
codes for more information.
0 No minimum gas pressure
The low gas pressure switch (input X5-01.2) opened, causing a fault. Check
gas supply and open any manual shutoff valves. Check the setpoint and
wiring of the low gas pressure switch. Check the setting of parameter
285/385.
1 Gas shortage - start prevention
The low gas pressure switch was not made by the end of phase 38,
preventing the startup of the LMV3. See diagnostic code 0 for more
corrective actions.
2 Heavy oil direct start
When firing heavy oil, the heavy oil direct start input (X9-04.2) was de-
energized, causing the fault. Check the setting of parameter 286, and
verify the wiring of the heavy oil direct start is correct.
50 Any # Internal error
51 Any # Internal error
55 Any # Internal error
56 Any # Internal error
57 Any # Internal error
58 Any # Internal error
Any # Internal error: No valid load controller source
No valid 4-20 mA signal is present on terminal X64. This could be done on
purpose to create a low fire hold. Otherwise, check wiring of 4-20 mA
signal and ensure 4-20 mA source is valid. See diagnostic codes for more
information.
0 Internal error: No valid load controller source Reset the fault. If the fault occurs continuously, replace the LMV3.
1 Analog output preset valid - prevention of startup
No valid 4-20 mA signal is present on terminal X64 and parameter 204 is
set to 1, causing the lockout. Re-establish a valid 4-20 mA signal and reset
the fault.
2 Analog output preset valid - default output low-fire
No fault: No valid 4-20 mA signal is present on terminal X64 and
parameter 204 is set to 0, so the LMV3 is operating at low fire. The fault
message appears to alert the user that a low fire hold is enabled. To
enable modulation, re-establish a valid 4-20 mA signal.
23
60
If the fault occurs continuously, replace the LMV3.
Section 6 Page 7 SCC Inc.

Siemens LMV3 series Specifications

General

Brand	Siemens
Model	LMV3 series
Category	Control Unit
Language	English